Kereskedelmi, irodai és ipari

Module parameters:
Size: 65mm*32.5mm ultra-thin four-corner hole diameter 3mm
Output interface: USBA USBA TYPE-C supports fast charge output (see the specification for the fast charge protocol)
Input interface: MICRO TYPE-C supports fast charging input (see the specification for the fast charging protocol)
Battery type: 3.7V battery (aggregate or 18650 lithium battery) in parallel with single cells, the capacity is not limited, the larger the capacity, the longer the charging and discharging time. For safety, please add a protective board to the battery. The main board has positive and negative poles, and the battery is not allowed. If you connect it backwards, you will burn the motherboard at your own risk! ! !
Fast charge indicator: input and output high voltage fast charge indicator
Conversion efficiency: 95% efficiency (different voltage and power efficiency vary) For details, please refer to the specification.
Press the key: The key duration is longer than 60ms but less than 2s, which is a short press action. A short press will turn on the battery indicator and boost output. A long press for 10s can reset the entire system. A key action of less than 30ms will not have any response.
Automatic detection of mobile phone insertion:
IP5328P automatically detects the phone is plugged in, immediately wakes up from standby mode, turns on the boost 5V to charge the phone, eliminating the need for key operations, and supports no key solutions.
Function description:
Low battery lock and activate
When the IP5328P is connected to the battery for the first time, no matter what the battery voltage is, the chip is in the locked state, and the lowest position of the battery light will flash 4
Prompt again; in the non-charging state, if the battery voltage is too low to trigger a low-power shutdown, the IP5328P will also enter the locked state.
In the locked state, in order to reduce static power consumption, the IP5328P does not have a mobile phone insertion detection function, and it cannot be activated by pressing the button. this
When the button is pressed, the boost output cannot be activated, but the lowest position of the battery indicator will flash 4 times to indicate.
In the locked state, you must enter the charging state to activate the chip function.
Recharge
IP5328P has a constant current and constant voltage lithium battery charging management system that supports a synchronous switch structure. Can automatically match different charging power
Pressure specifications.
When the battery voltage is less than 3V, 250mA trickle charge is used; when the battery voltage is greater than 3V, it enters the input constant current charging, and the battery terminal is charged at the maximum
Electric current 5.0A; when the battery voltage is close to the set battery voltage, it enters constant voltage charging; when the battery terminal charging current is less than about 300mA and the battery
When the cell voltage is close to the constant voltage voltage, stop charging. After the charging is completed, if the battery voltage is lower than 4.1V, restart the battery charging.
IP5328P adopts switching charging technology with a switching frequency of 500kHz. When charging with ordinary 5V input, the maximum input power is 10W; fast charging input
When charging, the maximum input power is 18W. The maximum charging current of the battery can reach 5.0A, and the charging efficiency can reach 94% , which can shorten the charging time by 3/4.
IP5328P will automatically adjust the charging current to adapt to adapters with different load capacities.
IP5328P does not support simultaneous charging and discharging, and the output discharge port will be closed in the charging state to prevent the input high voltage from damaging the charged device.
Boost
IP5328P integrates a synchronous switching converter system that supports high voltage output, supports 5V~12V wide voltage range output, negative
The load capacity is 5V-3.1A, 7V-2.4A, 9V-2.0A, 12V-1.5A. The switching frequency is 375KHz. Built-in soft start
Function to prevent malfunctions caused by excessive inrush current at startup, integrated output overcurrent, short circuit, overvoltage, overtemperature and other protection functions,
Ensure the stable and reliable operation of the system.
The output current of the boost system can be automatically adjusted with the temperature to ensure that the IC temperature is below the set temperature.

MAX7219 is an integrated serial input/output common-cathode display driver. It connects a microprocessor and an 8-digit 7-segment digital LED display. It can also be connected to a bar graph display or 64 independent LEDs. It includes an on-chip B-type BCD encoder, multiple scan loops, segment word drivers, and an 8*8 static RAM to store each data. There is only one external register used to set the segment current of each LED.
A convenient four-wire serial interface can be connected to all general-purpose microprocessors. Each data can be addressed without rewriting all the displays when updating. MAX7219 also allows users to select encoding or not encoding for each data.
The entire device includes a 150μA low-power shutdown mode, analog, and digital brightness control, a scan limit register allowing users to display 1-8 bits of data, and a detection mode that allows all LEDs to emit light.
Only 3 IO ports can drive 1 dot matrix! No flicker during dot matrix display! Support cascading!
Module parameters:
1. A single module can drive an 8*8 common cathode matrix
2. Module working voltage: 5V
3. Module size: length 12.8 cm X width 3.2 cm X height 1.3 cm
4. With 64 fixing screw holes, the hole diameter is 3mm
5. Module with input and output interface, support multiple module cascade
Wiring instructions:
1. The left side of the module is the input port, and the right side is the output port.
2. When controlling a single module, you only need to connect the input port to the CPU
3. When multiple modules are cascaded, the input terminal of the first module is connected to the CPU, the output terminal is connected to the input terminal of the second module, the output terminal of the second module is connected to the input terminal of the third module, and so on. ..
Take 51 single-chip microcomputers as an example:
VCC → 5V
GND → GND
DIN → P2.2
CS → P2.1
CLK → P2.0
Shipping list:
1. MAX7219 dot matrix module four in one (finished product, with dot matrix, tested)
2.20CM Dupont Line 5P

Name: GY-25 module
Use chip: MCU MPU6050
Model: GY-25
Power supply: 3-5v (internal low dropout voltage regulator)
Communication method: serial communication (baud rate 9600, 115200), IIC communication (only read raw data)
Module size: 15.5mm*11.5mm
Pin pitch 2.54mm
Direct data: YAW ROLL PITCH
Heading angle (YAW) ±180°
Roll angle (ROLL) ±180°
Pitch angle (PITCH) ±180°
Angular resolution 0.01°
Arduino serial port wiring diagram:

SIM800L GPRS ModuleBombSlot AutomaticMicroSIM Card 
Operating voltage: 3.7 ~ 4.2V (peak current 2A, please be prepared to handle)
Module size: 2.2cmx1.8cm
TTL serial port can be used with a direct link to the microcontroller. No need MAX232
Power on the module automatically boot automatically search network
Onboard signal lights (with signal flash slowly, no signal flash quickly)
The world\'s smallest size, absolutely no smaller than this GSM module.

SIM800L GPRS ModuleBombSlot AutomaticMicroSIM Card 
Operating voltage: 3.7 ~ 4.2V (peak current 2A, please be prepared to handle)
Module size: 2.2cmx1.8cm
TTL serial port can be used with a direct link to the microcontroller. No need MAX232
Power on the module automatically boot automatically search network
Onboard signal lights (with signal flash slowly, no signal flash quickly)
The world\'s smallest size, absolutely no smaller than this GSM module.

SIM800L GPRS ModuleBombSlot AutomaticMicroSIM Card 
Operating voltage: 3.7 ~ 4.2V (peak current 2A, please be prepared to handle)
Module size: 2.2cmx1.8cm
TTL serial port can be used with a direct link to the microcontroller. No need MAX232
Power on the module automatically boot automatically search network
Onboard signal lights (with signal flash slowly, no signal flash quickly)
The world\'s smallest size, absolutely no smaller than this GSM module.

8650 battery holder V3 development board compatible Raspberry pie Raspberry Pi 3 overcharge protection 5V
The 18650 battery shield has now been updated to V3. You can use this battery to shield power from many products like Raspberry Pi or esp8266 in this version of the 18650 shield that has a protection. The output current can reach 2A, which I believe will be a useful item.
What makes it special?
Battery protection (overcharge or overdischarge)
Micro USB port input
A type USB output
0.5A current charging
1 switch control USB output? 5 ~ 8v input voltage
3 volt and 1A output
 and 5V voltage 2A output
 LED indication (green, red indicates charging)
 3v output port X3
 5V output port X3 with caution " " and "-", you should follow the direction " " "-" on the PCB.
Note:If you put the wrong direction, the charging chip will be destroyed. This product does not include battery 18650

8650 battery holder V3 development board compatible Raspberry pie Raspberry Pi 3 overcharge protection 5V
The 18650 battery shield has now been updated to V3. You can use this battery to shield power from many products like Raspberry Pi or esp8266 in this version of the 18650 shield that has a protection. The output current can reach 2A, which I believe will be a useful item.
What makes it special?
Battery protection (overcharge or overdischarge)
Micro USB port input
A type USB output
0.5A current charging
1 switch control USB output? 5 ~ 8v input voltage
3 volt and 1A output
 and 5V voltage 2A output
 LED indication (green, red indicates charging)
 3v output port X3
 5V output port X3 with caution " " and "-", you should follow the direction " " "-" on the PCB.
Note:If you put the wrong direction, the charging chip will be destroyed. This product does not include battery 18650

8650 battery holder V3 development board compatible Raspberry pie Raspberry Pi 3 overcharge protection 5V
The 18650 battery shield has now been updated to V3. You can use this battery to shield power from many products like Raspberry Pi or esp8266 in this version of the 18650 shield that has a protection. The output current can reach 2A, which I believe will be a useful item.
What makes it special?
Battery protection (overcharge or overdischarge)
Micro USB port input
A type USB output
0.5A current charging
1 switch control USB output? 5 ~ 8v input voltage
3 volt and 1A output
 and 5V voltage 2A output
 LED indication (green, red indicates charging)
 3v output port X3
 5V output port X3 with caution " " and "-", you should follow the direction " " "-" on the PCB.
Note:If you put the wrong direction, the charging chip will be destroyed. This product does not include battery 18650

Features
The PCM5102 integrates a stereo analog-to-digital converter (DAC) that provides excellent dynamic performance and improved clock jitter tolerance. Leveraging DirectPathTM charge pump technology, the PCM510xA devices provide a 2.1 VRMS centrally grounded output (designers do not need to connect DC blocking capacitors at the output) and external mute circuitry traditionally associated with a single power line driver. Integrated soft mute also enables 120dB mute signal-to-noise ratio (SNR) with hardware mute. The integrated line driver supports loads as low as 1k per pin, outperforming all other charge pump based line drivers in performance. A high-performance integrated audio phase-locked loop (PLL) with a BCK reference inside the device generates SCK, enabling a 3-wire I2S connection and reducing system electromagnetic interference (EMI) without the need for a system clock (commonly referred to as a master clock). Smart clock error and PowerSense undervoltage protection feature a two-layer system that eliminates clicks and pops. Out-of-band noise can be controlled to as low as 20dB compared to many traditional switched capacitor DAC architectures, reducing EMI and aliasing in downstream amplifiers/ADCs. When the clock and power system fail, the device automatically attenuates data and activates an analog mute circuit.
Product parameters
Module supply voltage: DC3.3V
Signal-to-noise ratio SNR: 112dB
Dynamic range: 112dB
Full-scale single-ended output: 2.1VRMS
Sampling frequency: 8KHz～384KHz
Main clock frequency: 50MHz
Number of audio data: 16, 24, 32
Working environment temperature: -40℃～85℃
Audio data format: IIS, left justified
Total Harmonic Distortion (THD N at -1dBFS): -93dB
Module size: 31.8mm*23.7mm*6.35mm, with 3.5mm headphone holder

VGA adapter board 666 for Raspberry Pi 3B 2B B A
Description:
This is a neat and very useful solution for using a VGA display/monitor with your Raspberry Pi and a lot cheaper than an HDMI to VGA adapter or something similar. VGA connections are driven natively in hardware via the GPIO pins (using a parallel interface) and use the same CPU load as the HDMI connections on the board. It is capable of displaying 1080p60 VGA video without a CPU load. It is also possible to push this interface at the same time as an HDMI connection, so dual screen setups are also possible.
Please note. This add board uses all but 6 GPIO pins so it may not be possible to use another add board at the same time as the VGA adapter.
Note: Raspberry Pi motherboard is not included.
Feature:
Support for Raspberry Pi 3B/2B/B /A
VGA output supports resolutions: From 640x480 to 1920x1024 at 60fps.
With 6 bits per channel you have a maximum of 262144 colors.
Easy to set up.
Easy to configure.
Dimensions: 64.00mm x 32.3mm
Weight: 16.5g
Package includes:
1 x VGA 666 Adapter Board FOR Raspberry Pi 3B/2B/B /A
How to use it
Edit the /boot/curig.txt file with vim. Small or any other editor. And modify as follows:
Framebuffer_width = 800
Framefolfer_height = 600
Dpi_group = 2
Device_tree = bcm2710-rpi-3-b.dtb
Dpi_mode = 86
Dtparam = i2c_arm = off
Dtparam = spi = Discount
Dtparam = uart0 = Discount
Dtparam = uart1 = Discount

RCWL-0516 microwave induction module
Overview:
RCWL-0516 is a microwave sensor module that uses Doppler radar technology to detect the movement of objects. The module has the characteristics of high sensitivity, long sensing distance, strong reliability, large sensing angle, and wide power supply voltage range. It is widely used in various situations such as human body induction lighting and anti-theft alarm.
Feature:
●Using dedicated signal processing control chip CWL-9196
●Wide working voltage range 4.0~28.0V
●Compared with traditional infrared induction PIR, it has penetration detection capability
●Blocking time, adjustable distance
●Can output 3.3V power
Application:
The sensing face in front of the gold without any shelter.
Front and rear sensing surface space to set aside more than 1CM
The module carrier plane and install as a flatline
A certain application of effective detection area
The component side of the module is a positive sensing face, the opposite is a negative sensing surface. Negative sensing surface sensing less effective
Microwave modules can not be large-scale applications in the same area, otherwise, there will be mutual interference. Between single individuals over a distance greater than 1M

CP2104 has a high level of integration, built-in USB2.0 full-speed function controller, USB transceiver, crystal oscillator, EEPROM and asynchronous serial data bus (UART), supports modem full-function signals, and does not require any external USB devices. The working principle of CP2104 is similar to that of other USB-UART switching circuits. The USB port of the PC is virtualized as a COM port through the driver to achieve the purpose of expansion.
Characteristic
1. Built-in USB transceiver, no external circuit device is needed
2. Contains a clock circuit, no external circuit device is required
3. Built-in power-on reset circuit
4. On-chip voltage regulation can output 3.3V voltage
5. Meet the requirements of USB2.0 specification
6. The SUSPEND pin supports USB status suspend
7. Asynchronous serial data bus is compatible with all handshake and modulation regulator interface signals
8. The supported data format is data bit 8, stop bit 1, 2 and check bit
9. Connotation of 512-byte receive buffer and 512-byte transmit buffer
10. Support hardware or X-ON/X-OFF handshake
Module parameters:
1.PCB size: 30.5mm*17mm
2. PCB color: blue
3. Weight: 4g
4. Using the new chip CP2104
5. With self-recovery fuse. In the event of an accidental short circuit, it can effectively protect your downloader and computer USB port
6. With indicator light: the working status is clear at a glance
7. Two power output with 3.3V and 5V voltage
8. Lead out all useful pins
9. With reset signal output, you can download programs directly to Promini and other Arduino motherboards!
10. Supported operating systems:
-Windows 98/Me/2000/XP/7/8/10
-MAC OS-9
-MAC OS
-X-Windows CE
-Linux 2.40 or higher
Shipping list:
1.CP2104 module*1
2. Dupont line 5pin*1
(Packed in a single anti-static bag)

This board is a STM32F030F4P6 Minimum System Board(Cortex-M0). The target MCU is STM32F030F4P6 that is provided by ST. It is a ARM 32-bit Cortex?-M0 CPU, frequency up to 48 MHz, high-speed embedded memories . As a minimal ready-to-run system, this board integrates micor USB power supply interface, ISP/SWD programming/debugging interface, boot mode selection and so on to take you into the ARM Cortex world easily.
Package Included:
1  x  Mini System Development Board ARM STM32 F030F4P6 CORTEX-M0 Core 32bit 48 MHz

This module uses ESP8266-01/ESP-01S as the main control, and DHT22/AM2302 is a single-bus temperature and humidity sensor. Compared with DHT11, it has higher accuracy and larger range. It can be used with ESP-01/ESP-01S WIFI module, ESP8266 collects the temperature and humidity in the environment and uploads it to the server. Support 3.7v-12V DC power supply (3.7V lithium battery). It can be used as a temperature and humidity collection node for smart home or IOT projects.
Module parameters
measure temperature:
Resolution: 0.1°C
Accuracy: ±0.5℃
Detection range: -40°C — 80°C
Measuring humidity:
Resolution: 0.1% RH
Accuracy: ±2% RH (25°C)
Detection range: 0% RH ~ 99.9% RH
Working voltage: 3.3V ~ 12 V
Recommended storage environment:
Temperature: 10°C ~40°C
Humidity: below 60% RH
Application: weather station, humidity regulator and testing and inspection equipment, etc.

This module uses ESP8266-01/ESP-01S as the main control, and DHT22/AM2302 is a single-bus temperature and humidity sensor. Compared with DHT11, it has higher accuracy and larger range. It can be used with ESP-01/ESP-01S WIFI module, ESP8266 collects the temperature and humidity in the environment and uploads it to the server. Support 3.7v-12V DC power supply (3.7V lithium battery). It can be used as a temperature and humidity collection node for smart home or IOT projects.
Module parameters
measure temperature:
Resolution: 0.1°C
Accuracy: ±0.5℃
Detection range: -40°C — 80°C
Measuring humidity:
Resolution: 0.1% RH
Accuracy: ±2% RH (25°C)
Detection range: 0% RH ~ 99.9% RH
Working voltage: 3.3V ~ 12 V
Recommended storage environment:
Temperature: 10°C ~40°C
Humidity: below 60% RH
Application: weather station, humidity regulator and testing and inspection equipment, etc.

MAX7219 is an integrated serial input/output common-cathode display driver. It connects a microprocessor and an 8-digit 7-segment digital LED display. It can also be connected to a bar graph display or 64 independent LEDs. It includes an on-chip B-type BCD encoder, multiple scan loops, segment word drivers, and an 8*8 static RAM to store each data. There is only one external register used to set the segment current of each LED.
A convenient four-wire serial interface can be connected to all general-purpose microprocessors. Each data can be addressed without rewriting all the displays when updating. MAX7219 also allows users to select encoding or not encoding for each data.
The entire device includes a 150μA low-power shutdown mode, analog, and digital brightness control, a scan limit register allowing users to display 1-8 bits of data, and a detection mode that allows all LEDs to emit light.
Only 3 IO ports can drive 1 dot matrix! No flicker during dot matrix display! Support cascading!
Module parameters:
1. A single module can drive an 8*8 common cathode matrix
2. Module working voltage: 5V
3. Module size: length 6.5 cm X width 6.4 cm X height 1.3 cm
4. With 32 fixing screw holes, the hole diameter is 3mm
5. Module with input and output interface, support multiple module cascade
Wiring instructions:
1. The left side of the module is the input port, and the right side is the output port.
2. When controlling a single module, you only need to connect the input port to the CPU
3. When multiple modules are cascaded, the input terminal of the first module is connected to the CPU, the output terminal is connected to the input terminal of the second module, the output terminal of the second module is connected to the input terminal of the third module, and so on. ..
Take 51 single-chip microcomputers as an example:
VCC → 5V
GND → GND
DIN → P2.2
CS → P2.1
CLK → P2.0
Shipping list:
1.MAX7219 2*2 dot matrix module
2.20CM Dupont Line 5P
3. Pin header 2.54-5P

NODEMCU-32S/ESP32 development board
WiFi IoT Development Board Serial WiFi Module Based on ESP32
Product introduction
NodeMCU is an open source IoT platform, it uses Lua scripting language programming, the platform is based on the eLua open source project, the platform uses many open source projects, such as lua-cjson, spiffs. "NodeMCU-32S" includes firmware that can run on the ESP32 Wi-Fi SoC chip, and hardware based on the ESP-32S module. Node MCU-32S This development board continues the classic design of NodeMCU 1.0, and leads most of the I/O to the pin headers on both sides. Developers can connect peripherals according to their own needs. When developing and debugging with a breadboard, the standard pin headers on both sides make the operation easier and more convenient.
Product Details
1. Include USB serial port, plug and play
2. 36 GPIOs, each of which can be configured as PWM, I2C
3. FCC & CE certified WiFi module with built-in antenna

NODEMCU-32S/ESP32 development board
WiFi IoT Development Board Serial WiFi Module Based on ESP32
Product introduction
NodeMCU is an open source IoT platform, it uses Lua scripting language programming, the platform is based on the eLua open source project, the platform uses many open source projects, such as lua-cjson, spiffs. "NodeMCU-32S" includes firmware that can run on the ESP32 Wi-Fi SoC chip, and hardware based on the ESP-32S module. Node MCU-32S This development board continues the classic design of NodeMCU 1.0, and leads most of the I/O to the pin headers on both sides. Developers can connect peripherals according to their own needs. When developing and debugging with a breadboard, the standard pin headers on both sides make the operation easier and more convenient.
Product Details
1. Include USB serial port, plug and play
2. 36 GPIOs, each of which can be configured as PWM, I2C
3. FCC & CE certified WiFi module with built-in antenna

Product introduction:
This is an ARM system core board based on STM32F030C8T6 as the main chip, with the power supply circuit, crystal oscillator circuit, reset circuit and program programming circuit. Reasonable circuit design ensures that the MCU can work, which can make it more convenient for users to build on this foundation. Expand your own peripheral circuits. The program can be developed using keil or IAR programming software, and the compiled program can be downloaded through SWD or ISP. The materials and technologies we provide can be used to learn ARM microcontrollers and develop products.
F0 obtains the value of nBOOT1 through the select bit in the user option byte at memory address 0X1FFFF800, instead of using two pins to set it. Together with BOOT0 pin, select boot mode to FLASH storage, SRAM or system memory
①. Main chip (Model: STM32F030C8T6)
1.1. Package type: LQFP;
1.2. Number of pins: 48;
1.3. Kernel: ARM 32-bit CortexⓇ-MO CPU;
1.4. Working frequency: 48MHz;
1.5. Storage resources: 64K Byte Flash/8K Byte RAM;
1.6. Interface resources: 2x SPI, 2x USART, 2x 12C, 39x I/O port
1.7. Analog-to-digital conversion: 1x ADC (12 bits/10 channels)
1.8. Timer: 5x general purpose timer
                   1x Advanced Timer
                   1x base timer
1.9. Debug download: Only support SWD debug download.
1.10. Working voltage: 2.4～3.6V
②. Mirco USB interface: power supply and USB communication function, (does not support program download)
③. Start jumping to choose the programming method: (1, user flash memory 2, SRAM 3, system memory).
④. Reset button: used to reset the chip program by the user.
⑤.8M crystal oscillator: The main frequency of the system can be set to 48MHz through frequency multiplication setting.
⑥.32.768KHz crystal oscillator: available for built-in RTC, or for calibration.
⑦. Power LED (PWR): Power indicator status, can judge whether the power supply is stable,
⑧. User LED (PC13): It is convenient for I/O output testing or indicating program running status.
⑨. SWD interface: support simulation, download and debugging.
⑩. RT9193-33: 3. 3V voltage regulator chip, the maximum output is 300mA.
I. Reserved EEPROM interface
Additional instructions:
1. This product has led out the necessary I/O port pins to facilitate connection with peripherals.
2. In addition to downloading through the SWD interface, the program can also be downloaded through USART1 (PA9 and PA10).
3. About the screen printing of the core board:
5V>>Core board system 5V power supply interface, at this time 3.3 (3.3V) is equivalent to output
G>>Power Ground,
VB >> VBAT pin on MCU
A/B/C (0～15)—> the pin number of the GPIO port of A/B/C on the MCU
DIO>>SWDIO (data signal line)
DCLK>>SWCLK (clock signal line)

Features: each of the four channels supports the QC 3.0 fast charge protocol, and can support fast charging at the same time, and can output 5V 9V 12V (requires mobile phone protocol support) voltage, output current adaptive, single channel power consumption 24W, 4-channel module maximum power Consumption 96W, PCB adopts FR-4 1.6 mm board thickness design, optimized layout and wiring, tight design, open window on the back for heat dissipation, low full load working temperature, standby current 0.013A, module has output voltage compensation function.
Note: This module is a 4-way pressure drop fast charging module, please use 12V-30V DC power supply, and the positive and negative poles cannot be reversed.
Module characteristics
1. Built-in synchronous switch step-down converter chip
2. Input voltage range: 4.5V to 32V (The input voltage must be higher than the output voltage because it is a voltage drop module)
3. Output voltage range: 3V to 12V, automatically adjusted according to the fast charge protocol
4. Output power: maximum 24W (4V@3.6A, 5V@3.4A, 9V@2.5A, 12V@2A, etc.)
5. Wired output voltage compensation
6. The output has CV/CC characteristics (output current is less than the set value, output CV mode; output current is greater than the set value, output CC mode)
7. The conversion efficiency is up to 97%
8. Soft start function
9. 220Khz switching frequency
Output fast charge
1. Support BC1.2, Apple, Samsung agreement
2. Support Qualcomm QC2.0 and QC3.0
3. Support MTK PE1.1/PE2.0
4. Support Huawei Fast Charge Protocol FCP
5. Support Samsung Quick Charge Agreement AFC
6. Support Spreadtrum fast charge protocol SFCP
Multiple protection, high reliability
1. Output overcurrent, input overvoltage, input undervoltage, output short circuit protection
2. The over-temperature protection of the whole machine
3. ESD 4KV, DC withstand voltage 48V
Use
Car chargers, fast charging adapters, smart power strips, solar chargers, and other four USBs all support the fast charging protocol and can output 5V 9V 12V voltage.
The USB output voltage depends on your device. The output voltage of different devices is different. The conventional USB output voltage is 5V. It can output different fast charging voltages according to the QC protocol. The general fast charging voltage of mobile phones is 9V 12V, and some devices support 5V high current fast charging. Small current charging for devices that do not support fast charging.

This module is fully upgraded, with 2 ounces of immersion gold technology, a lot of heat dissipation vias are added, the PCB bottom plate is enlarged, and the charging temperature of the mobile device is basically low.
Features: each of the four channels supports the QC 3.0 fast charge protocol, and can support fast charging at the same time, and can output 5V 9V 12V (requires mobile phone protocol support) voltage, output current adaptive, single channel power consumption 24W, 4-channel module maximum power Consumption 96W, PCB adopts FR-4 1.6mm board thickness design, optimized layout and wiring, tight design, open window on the back for heat dissipation, low full load working temperature, standby current 0.013A, module has output voltage compensation function.
Note: This module is a 4-way pressure drop fast charging module, please use 12V-30V DC power supply, and the positive and negative poles cannot be reversed.
Module characteristics
1. Built-in synchronous switch step-down converter chip
2. Input voltage range: 4.5V to 32V (The input voltage must be higher than the output voltage because it is a voltage drop module)
3. Output voltage range: 3V to 12V, automatically adjusted according to the fast charge protocol
4. Output power: maximum 24W (4V@3.6A, 5V@3.4A, 9V@2.5A, 12V@2A, etc.)
5. Wired output voltage compensation
6. The output has CV/CC characteristics (output current is less than the set value, output CV mode; output current is greater than the set value, output CC mode)
7. The conversion efficiency reaches 97%
8. Soft start function
9. 220Khz switching frequency
Output fast charge
1. Support BC1.2, Apple, Samsung agreement
2. Support Qualcomm QC2.0 and QC3.0
3. Support MTK PE1.1/PE2.0
4. Support Huawei Fast Charge Protocol FCP
5. Support Samsung Quick Charge Agreement AFC
6. Support Spreadtrum fast charge protocol SFCP
Multiple protection, high reliability
1. Output overcurrent, input overvoltage, input undervoltage, output short circuit protection
2. The over-temperature protection of the whole machine
3. ESD 4KV, DC withstand voltage 48V
Use
Car chargers, fast charging adapters, smart power strips, solar chargers, etc.
All four USBs support fast charging protocol, and can output 5V 9V 12V voltage.

Features:
1. Based on ESP-8266EX
2. Arduino compatible, use Arduino IDE for programming
3.11 XI/O pins
4.1XADC pin (input 0-3.3V)
5. Support OTA online
6. Onboard 5V 1A switching power supply(large input 24V)

Features:
1. Based on ESP-8266EX
2. Arduino compatible, use Arduino IDE for programming
3.11 XI/O pins
4.1XADC pin (input 0-3.3V)
5. Support OTA online
6. Onboard 5V 1A switching power supply(large input 24V)

Features:
1. Based on ESP-8266EX
2. Arduino compatible, use Arduino IDE for programming
3.11 XI/O pins
4.1XADC pin (input 0-3.3V)
5. Support OTA online
6. Onboard 5V 1A switching power supply(large input 24V)

Features:
1. Based on ESP-8266EX
2. Arduino compatible, use Arduino IDE for programming
3.11 XI/O pins
4.1XADC pin (input 0-3.3V)
5. Support OTA online
6. Onboard 5V 1A switching power supply(large input 24V)

Description:
Power input: DC5V or received by a lithium battery input VBAT and GND.
Supports MCU level: 5V / 3.3V for TTL logic
(Such as the common 51 and the for arduino is 5v, STM32 is the 3.3v)
Antenna use: IPEX antenna interfaces, you can use the version PCB antenna or antenna IPEX-SMA- peppers
Pin Description:
5V: power supply pin, the only input DC5V, used to power the board.
V_TTL: access control board microcontroller core target voltage of 5V / 3.3V (according to its own microcontroller is much to distinguish kernel v), this pin is used to convert the GSM module board TXD and RXD for the corresponding TTL logic.GND: power supply ground
TXD: send pin serial port module, TTL level (not directly connected to RS232 level)
RXD: receive pin serial port module, TTL level (not directly connected to RS232 level)
DTR: Data Terminal Ready
SPKP: Core Audio output pin
SPKN: Core Audio output pin
MICN: Core Audio input
MICP: Core Audio input
RI: Ring core pin tips
VRTC: RTC pin external battery
GND: power supply ground
PWR: This pin can turn down or turn off the module
GND: power supply ground
VBAT: lithium battery input pin, 3.3v-4.4v
Pacakage Included:
1PC*SIM800C GSM GPRS Module 5V/3.3V TTL STM32 C51 with Bluetooth and TTS for Arduino

ESP8266 CH340 V3/ESP8266 CP2102
2.Interactive
3.Programmable
4.Low cost
5.Simple
6.Smart
WI-FI enabled
Ard--uino-like hardware IO
Advanced API for hardware IO, which can dramatically reduce the redundant work for configuring and manipulating hardware.
Code like ard--uino, but interactively in Lua script.
Nodejs style network API
Event-driven API for network applicaitons, which faciliates developers writing code running on a 5mm*5mm sized MCU in Nodejs style.
Greatly speed up your IOT application developing process.
Introduction:
ESP32 is already integrated antenna and RF balun, power amplifier, low-noise amplifiers, filters,
and power management module. The entire solution takes up the least amount of printed circuit board area.
This board is used with 2.4 GHz dual-mode Wi-Fi and Bluetooth chips by TSMC 40nm low power technology,
power and RF properties best, which is safe, reliable, and scalable to a variety of applications.
Features:
High performance-price ratio
Small volume, easily embeded to other products
Strong function with support LWIP protocol, Freertos
Supporting three modes: AP, STA, and AP STA
Supporting Lua program, easily to develop

ESP8266 CH340 V3/ESP8266 CP2102
2.Interactive
3.Programmable
4.Low cost
5.Simple
6.Smart
WI-FI enabled
Ard--uino-like hardware IO
Advanced API for hardware IO, which can dramatically reduce the redundant work for configuring and manipulating hardware.
Code like ard--uino, but interactively in Lua script.
Nodejs style network API
Event-driven API for network applicaitons, which faciliates developers writing code running on a 5mm*5mm sized MCU in Nodejs style.
Greatly speed up your IOT application developing process.
Introduction:
ESP32 is already integrated antenna and RF balun, power amplifier, low-noise amplifiers, filters,
and power management module. The entire solution takes up the least amount of printed circuit board area.
This board is used with 2.4 GHz dual-mode Wi-Fi and Bluetooth chips by TSMC 40nm low power technology,
power and RF properties best, which is safe, reliable, and scalable to a variety of applications.
Features:
High performance-price ratio
Small volume, easily embeded to other products
Strong function with support LWIP protocol, Freertos
Supporting three modes: AP, STA, and AP STA
Supporting Lua program, easily to develop

Features
1. Length: 28mm X width 12mm X height 10mm
2. Main chip: Aosong DHT22 temperature and humidity sensor
3. Working voltage: DC 3.3-5.5V
4. Humidity measurement range: 0---100% RH
5. Humidity measurement accuracy: ±2% RH
6. Temperature measurement range: -40---80℃
7. Temperature measurement accuracy: ±0.5℃
8. Working voltage: DC5V commonly used
9. Single bus digital signal output, serial data bidirectional port;

AM2302 temperature and humidity sensor
AM2302B Humidity Capacitor Digital Temperature and Humidity Module is a temperature and humidity composite sensor with calibrated digital signal output. It uses dedicated digital module acquisition technology and temperature and humidity sensing technology to ensure that the product has extremely high reliability and excellent long-term stability. The sensor includes a capacitive humidity sensing element and a high-precision temperature measuring element, and is connected with a high-performance 8-bit single-chip microcomputer. Therefore, the product has the advantages of excellent quality, ultra-fast response, strong anti-interference ability, and high cost performance. Each sensor is calibrated in an extremely accurate humidity calibration room. The calibration coefficients are stored in the single-chip microcomputer in the form of a program, and these calibration coefficients are called in the sensor's internal detection signal processing. Standard single bus interface makes system integration easy and quick. Ultra-small size, extremely low power consumption, and signal transmission distance of up to 20 meters or more, making it the choice for various applications and demanding applications. The product is 3-lead (single bus interface) for easy connection.
Product parameters:
Product model: AM2302B temperature and humidity sensor
Working voltage: DC 3.3-5.5V
Output signal: single bus digital signal
Display resolution: 0.1℃ or 0.1% RH
Humidity measurement range: 0~99.9% RH
Temperature measurement range: -40~ 80℃
Accuracy: ±2% RH ±0.5℃
Collection cycle: 1/e(63% )<5s
Storage temperature range: 0~ 80%
Storage humidity range: below 95% RH (non-condensing)
Product shell material: ABS
Dimensions
Wiring instructions
Pin

Colour

Name

Describe
1

Red

VDD

Power supply (3.3-5.5V)
2

Yellow

SDA

Serial data, bidirectional port
3


NC

Empty feet
4

Black

GND

Land

Product Information: 
Product Name: Turbidity sensor module kit
Description:
Turbidity
sensors is the use of optics , through the liquid solution and
scattering rate of transmittance integrated to determine the turbidity
case , since the amount of haze value is gradual , usually detected in a
dynamic environment , the turbidity sensor acquisition value , the need
for external control for AD conversion , the conversion to obtain the
corresponding environment turbidity situation, so that the sensor can
also need to produce a peripheral circuit detected in the system , with a
waterproof probe , mainly used in washing machines, dishwashers and
other equipment turbidity testing can also be used on electronic design,
graduate design, electronic competition experiments and other
applications.
Technical parameters:
1, Working voltage: DC5V
2 , Operating Current : 30mA (MAX)
3 , Response time : <500ms
4 , Insulation Resistance : 100M [Min];
5, the output way: Analog output 0-4.5V
6, the output way: high / low signal(  High : 5V    Low : 0V)
7 , operating temperature : -30 oC -80 oC;
8 , Storage temperature : -10-80 oC.
9, Weight : 55g
10 , Size : 30mm * 20mm * 12mm
Applications:
Washing
machines, dishwashers , industrial control , environmental sewage
collection and so on turbidity measurement and control needs of the
occasion ;
Stay after purchase mailboxes sensor manual, as well as
provide technical guidance services , does not provide product
development and programming services .

1. Product overview
AM2302 Humidity Capacitor Digital Temperature and Humidity Module is a temperature and humidity composite sensor with calibrated digital signal output. It uses dedicated digital module acquisition technology and temperature and humidity sensing technology to ensure that the product has extremely high reliability and excellent long-term stability. The sensor includes a capacitive humidity sensing element and a high-precision temperature measuring element, and is connected with a high-performance 8-bit single-chip microcomputer. Therefore, the product has the advantages of excellent quality, ultra-fast response, strong anti-interference ability, and high cost performance. Each sensor is calibrated in an extremely accurate humidity calibration room. The calibration coefficients are stored in the single-chip microcomputer in the form of a program, and these calibration coefficients must be called during the processing of the detection signal inside the sensor. Standard single bus interface makes system integration easy and quick. Ultra-small size, extremely low power consumption, and signal transmission distance of up to 20 meters or more, making it the best choice for various applications and even the most demanding applications. The product is 3-lead (single bus interface) for easy connection. Special packaging forms can be provided according to user needs.
Second, the scope of application
HVAC, dehumidifiers, testing and inspection equipment, consumer products, automobiles, automatic controls, data loggers, home appliances, humidity regulators, medical, weather stations, and other related humidity detection and control.
3. Product highlights
Ultra-low energy consumption, long transmission distance, full automatic calibration, use of capacitive humidity sensor, complete interchangeability, standard digital single bus output, excellent long-term stability, use of high-precision temperature measurement components.
Four, product parameters
1. Working voltage: 3V--5.5V
2. Sensor model: AM2302 temperature and humidity sensor
3. Signal output form: digital signal
4. Temperature measurement range: -40℃--80℃
5. Measurement accuracy: 0.5℃
6. Humidity measurement range: 0-100% RH
7. Measurement accuracy: 2% RH
8.Resolution: 16 bits
Five, wiring instructions
" ": Connect the positive pole of the power supply
"-": Connect to the negative pole of the power supply
"out": connect to MCU IO port

1. Product overview
AM2302 Humidity Capacitor Digital Temperature and Humidity Module is a temperature and humidity composite sensor with calibrated digital signal output. It uses dedicated digital module acquisition technology and temperature and humidity sensing technology to ensure that the product has extremely high reliability and excellent long-term stability. The sensor includes a capacitive humidity sensing element and a high-precision temperature measuring element, and is connected with a high-performance 8-bit single-chip microcomputer. Therefore, the product has the advantages of excellent quality, ultra-fast response, strong anti-interference ability, and high cost performance. Each sensor is calibrated in an extremely accurate humidity calibration room. The calibration coefficients are stored in the single-chip microcomputer in the form of a program, and these calibration coefficients must be called during the processing of the detection signal inside the sensor. Standard single bus interface makes system integration easy and quick. Ultra-small size, extremely low power consumption, and signal transmission distance of up to 20 meters or more, making it the best choice for various applications and even the most demanding applications. The product is 3-lead (single bus interface) for easy connection. Special packaging forms can be provided according to user needs.
Second, the scope of application
HVAC, dehumidifiers, testing and inspection equipment, consumer products, automobiles, automatic controls, data loggers, home appliances, humidity regulators, medical, weather stations, and other related humidity detection and control.
3. Product highlights
Ultra-low energy consumption, long transmission distance, full automatic calibration, use of capacitive humidity sensor, complete interchangeability, standard digital single bus output, excellent long-term stability, use of high-precision temperature measurement components.
Four, product parameters
1. Working voltage: 3V--5.5V
2. Sensor model: AM2302 temperature and humidity sensor
3. Signal output form: digital signal
4. Temperature measurement range: -40℃--80℃
5. Measurement accuracy: 0.5℃
6. Humidity measurement range: 0-100% RH
7. Measurement accuracy: 2% RH
8.Resolution: 16 bits
Five, wiring instructions
" ": Connect the positive pole of the power supply
"-": Connect to the negative pole of the power supply
"out": connect to MCU IO port

The TSL2584TSV is a very-high sensitivity light-to-digital
converter that transforms light intensity into a digital signal
output capable of direct I²C interface. The device combines one
broadband photodiode (visible plus infrared), one
infrared-responding photodiode, and a photopic
infrared-blocking filter on a single CMOS integrated circuit. Two
integrating ADCs convert the photodiode currents into a digital
output that represents the irradiance measured on each
channel. This digital output can be input to a microprocessor
where illuminance (ambient light level) in lux is derived using
an empirical formula to approximate the human eye response.
The TSL2584TSV supports a traditional level style interrupt that
remains asserted until the firmware clears it.
Key Benefits & Features
The benefits and features of TSL2584TSV, Light-to-Digital
Benefits Features
• Approximates Human Eye Response • Dual Diode with Photopic Filter
• Flexible Operation • Programmable Analog Gain and Integration Time
• Suited for Operation Behind Dark Glass • 1000000: 1 Dynamic Range
• Low Operating Overhead • Programmable Upper and Lower Thresholds
• Programmable Persistence Filter
• Low Power • 3.0 μA Sleep State
• Industry Standard Two-Wire Interface
• I2C Fast Mode Compatible Interface
• Data Rates up to 400 kbit/s
• Input Voltage Levels Compatible with1.8−V Bus
The TSL2584TSV applications include:
• Display Backlight Control
• Keyboard Illumination Control
• Printer Paper Detection
• Medical Diagnostics
【Interface Description】
VCC: positive power supply (3.3V/5V power input)
GND: power ground
SDA: I2C data pin
SCL: I2C clock pin
INT: Interrupt output pin, can not be connected

Laminated Acrylic Shell
Common to Raspberry Pi 1st B and 2nd B versions
Very suitable for hardware DIY and cluster use
Shipping list:
1: Two acrylic panels up and down
2: 4 M3*20 copper pillars
3: 4 M3*5 6 copper pillars
4: 4 M3 screws
5: 4 M2.5 screws
6: 4 M2.5 nuts
7: 4 transparent acrylic spacers
Install steps:
1: Tear off the protective layer
2: Fix the Raspberry Pi B circuit board on the bottom plate
3: Use M3*5 6 copper pillars and M3*20 copper pillars to install on the four corners
4: Fix the top cover with screws
This shell is simple and elegant, with strong practicability, suitable for hardware DIY and cluster application enthusiasts

Laminated Acrylic Shell
Common to Raspberry Pi 1st B and 2nd B versions
Very suitable for hardware DIY and cluster use
Shipping list:
1: Two acrylic panels up and down
2: 4 M3*20 copper pillars
3: 4 M3*5 6 copper pillars
4: 4 M3 screws
5: 4 M2.5 screws
6: 4 M2.5 nuts
7: 4 transparent acrylic spacers
Install steps:
1: Tear off the protective layer
2: Fix the Raspberry Pi B circuit board on the bottom plate
3: Use M3*5 6 copper pillars and M3*20 copper pillars to install on the four corners
4: Fix the top cover with screws
This shell is simple and elegant, with strong practicability, suitable for hardware DIY and cluster application enthusiasts

Laminated Acrylic Shell
Common to Raspberry Pi 1st B and 2nd B versions
Very suitable for hardware DIY and cluster use
Shipping list:
1: Two acrylic panels up and down
2: 4 M3*20 copper pillars
3: 4 M3*5 6 copper pillars
4: 4 M3 screws
5: 4 M2.5 screws
6: 4 M2.5 nuts
7: 4 transparent acrylic spacers
Install steps:
1: Tear off the protective layer
2: Fix the Raspberry Pi B circuit board on the bottom plate
3: Use M3*5 6 copper pillars and M3*20 copper pillars to install on the four corners
4: Fix the top cover with screws
This shell is simple and elegant, with strong practicability, suitable for hardware DIY and cluster application enthusiasts

Laminated Acrylic Shell
Common to Raspberry Pi 1st B and 2nd B versions
Very suitable for hardware DIY and cluster use
Shipping list:
1: Two acrylic panels up and down
2: 4 M3*20 copper pillars
3: 4 M3*5 6 copper pillars
4: 4 M3 screws
5: 4 M2.5 screws
6: 4 M2.5 nuts
7: 4 transparent acrylic spacers
Install steps:
1: Tear off the protective layer
2: Fix the Raspberry Pi B circuit board on the bottom plate
3: Use M3*5 6 copper pillars and M3*20 copper pillars to install on the four corners
4: Fix the top cover with screws
This shell is simple and elegant, with strong practicability, suitable for hardware DIY and cluster application enthusiasts

This module is different from the LM2596 step-down module on the market. The chip design power they use is 15W and 50W respectively. This step-down module in our shop adopts the original genuine upgraded chip, which is superior in input and output voltage range, output power and efficiency. Similar products, the power can reach 75W, with a very high cost performance.
Module Highlights:
5A high-power, high-efficiency buck and low ripple!
With power indicator light!
On-board voltmeter, the voltmeter can be self-calibrated, there will never be the problem of inaccuracy of the voltmeter! !
With heatsinks!
Donate to the Bronze Pillar! ! !

A step-down module with independent output of dual USB ports, supporting QC3.0 and other fast charging protocols
Product Features
Input Voltage Range: 6V to 32V
Output voltage: default 5V, automatically adjust between 3~12V after triggering fast charge.
Output power: 18W (SCP maximum 22.5W) × 2
Two independent USB outputs, fast charging at the same time
Output voltage cable compensation function
Conversion efficiency: 93% ~97% (load current > 1A)
Support a variety of fast charging protocols
Input overvoltage and undervoltage protection
Output overcurrent and short circuit protection
Over-temperature protection of the whole machine
Supported fast charging protocols
BC1.2, Apple, Samsung protocol
Qualcomm QC2.0 and QC3.0
MTK PE1.1/PE2.0
Huawei Fast Charge Protocol FCP and SCP
Samsung Fast Charge Protocol AFC
Spreadtrum Fast Charge Protocol SFCP
Applications
Solar panel to mobile phone charging
On-board charging retrofit
Driving recorder power supply
Home Power Transformation
...
Product size: 5.1×4.1×1.6cm
Input interface: DC 5.5/2.1 (outer diameter 5.5mm, inner diameter 2.1mm)

A step-down module with independent output of dual USB ports, supporting QC3.0 and other fast charging protocols
Product Features
Input Voltage Range: 6V to 32V
Output voltage: default 5V, automatically adjust between 3~12V after triggering fast charge.
Output power: 18W (SCP maximum 22.5W) × 2
Two independent USB outputs, fast charging at the same time
Output voltage cable compensation function
Conversion efficiency: 93% ~97% (load current > 1A)
Support a variety of fast charging protocols
Input overvoltage and undervoltage protection
Output overcurrent and short circuit protection
Over-temperature protection of the whole machine
Supported fast charging protocols
BC1.2, Apple, Samsung protocol
Qualcomm QC2.0 and QC3.0
MTK PE1.1/PE2.0
Huawei Fast Charge Protocol FCP and SCP
Samsung Fast Charge Protocol AFC
Spreadtrum Fast Charge Protocol SFCP
Applications
Solar panel to mobile phone charging
On-board charging retrofit
Driving recorder power supply
Home Power Transformation
...
Product size: 5.1×4.1×1.6cm
Input interface: DC 5.5/2.1 (outer diameter 5.5mm, inner diameter 2.1mm)

Product Introduction
One Modbus RTU relay module is equipped with a mature and stable 8-bit MCU and RS485 level communication chip. Using standard Modbus RTU format RS485 communication protocol, it can realize 1 optical coupler input signal detection and 1 relay signal output, which can be used for digital quantity detection or power control occasions.
Product parameter
1. Onboard mature and stable 8 bit MCU and MAX485 level conversion chip
2. Communication protocol: support standard Modbus RTUt protocol
3. Communication interface: support RS485/ TTL UART interface
4. Communication baud rate: 4800/9600/19200, default 9600bps, support power-off save
5. Optocoupler input signal range: DC3.3-30V (this output cannot be used for relay control)
6. Output signal: relay switch signal, support manual, closed and flash mode, the delay base of flash close/flash is 0.1S, and the maximum flash/flash time can be set to 0 XFFFF＊0.1S=65535＊0.1 s=6553.5s
7. Device address: range 1-255, default 255, support power-off save
8. Board 1 way 5V, 10A/250VAC10A/30VD relay, which can be activated continuously for 100,000 times, has diode effusion protection, and has a short response time
9. On-board relay switch indicator
10. Power supply voltage: DC7-24V, with input anti-reverse protection

Digital temperature and humidity sensor
Note: DHT21 has been renamed AM2301
1. Relative humidity and temperature measurement
2. Full calibration, digital output
3. Excellent long-term stability
4. No extra parts required
5. Ultra-long signal transmission distance
6. Ultra-low energy consumption
7. 4-pin installation
8. Fully interchangeable
AM2301/DHT21 product overview
AM2301/DHT21 digital temperature and humidity sensor is a temperature and humidity composite sensor with calibrated digital signal output. It uses dedicated digital module acquisition technology and temperature and humidity sensing technology to ensure that the product has extremely high reliability and excellent long-term stability. The sensor includes a capacitive humidity sensing element and an NTC temperature measuring element, and is connected with a high-performance 8-bit single-chip microcomputer. Therefore, the product has the advantages of excellent quality, ultra-fast response, strong anti-interference ability, and high cost performance. Each AM2301/DHT21 sensor is calibrated in an extremely accurate humidity calibration room. The calibration coefficients are stored in the OTP memory in the form of a program, and these calibration coefficients are called during the processing of the detection signal inside the sensor. The single-wire serial interface makes system integration simple and fast. Ultra-small size, extremely low power consumption, and signal transmission distance of up to 20 meters or more, making it the best choice for various applications and even the most demanding applications. The product is a 4-pin single-row pin package. The connection is convenient, and the special packaging form can be provided according to user needs.
Application field
HVAC testing and inspection equipment
Car data logger
Consumer goods automatic control
Weather station
Humidity regulator medical
Dehumidifier

HTU31D is a digital communication module. This relative humidity sensor is surface-mounted and can also provide temperature output. The sensor can provide fast response, high precision measurement and low hysteresis even in extreme temperature and humidity environments. The sensor can work in a temperature range of -40°C to 125°C, with a typical temperature accuracy of ±0.2°C. In addition, it can measure relative humidity from 0 to 100% with a resolution of 0.01 and an accuracy of ±2% .
The HTU31 sensor can work in a voltage range of 3.3 V to 5.5 V and can maintain an operating current of only 450 µA, which is as low as 0.05 µA in sleep mode. This sensor complies with the AEC Q100 Grade 1 standard and adopts a compact 6-pin DFN package with a size of 2.5 mm × 2.5 mm × 0.9 mm. In addition to normal operation in harsh environments, this sensor is also suitable for applications such as HVAC, home appliances, respiratory equipment, and environmental monitoring solutions.
HTU31 is designed to meet the needs of the environment and end users. It is an ideal solution for home appliances, consumer, industrial, automotive and medical applications. The main features of this humidity and temperature sensor include:
1. Precision engineering: HTU31 adopts precision engineering design, which can achieve linear response and optimize system performance. The sensor maintains a strict linear response curve, the humidity measurement range is (0-100% ), and the temperature measurement range is (-40° to 125°C);
2. Fast response time: HTU31 sensor has a humidity mold structure, and the response time is very fast (t63% <5 seconds). Even after condensation, the response time of the sensor can still reach t63% <10 seconds, allowing the system to continue to maintain performance.
3. High performance: The HTU31 sensor provides a specific mold, rated IP67 sealing level, and also has a filter, which can maintain performance continuously, has low hysteresis, and can accurately measure the environment even when exposed to high temperature, high humidity or condensation (Temperature and humidity);
Technical Parameters:
1. Humidity measurement range: 0~100% RH
2. Humidity measurement accuracy: ±2% RH
3. Temperature measurement range: -40~125℃
4. Temperature measurement accuracy: ±0.2℃
5. Working voltage: 2.4~5.5VDC (wide voltage)
6. I2C interface output
7. Size: 12.8MM*12.9MM

FT232RL serial port module USB to TTL serial port small board 5V 3.3V 1.8V level Download the burn line
This module supports three level switching of 5V/3.3V/1.8V, VCC/TX/RX/RTS/CTS/DTR/DCD/RI/ can be switched
Module features
1. Original FT232RL main control chip, fast speed and good stability.
2. Support Windows XP/WIN7/WIN8/WIN10 32/64 bit system.
3. The stable speed can reach 3Mbps (3 times of 921600).
4. The power supply VCC and signal level (including flow control pins CTS/RTS/DTR/RI/DCD) can be freely switched between 5V/3.3V/1.8V, adapting to systems with different voltages.
5. Integrated power (blue), receiving (green), sending (red) three indicator lights.
6. The onboard 500mA self-recovery fuse will automatically disconnect when over-current/short-circuit, effectively protecting the safety of the computer.
7. Strong power supply capability, with a maximum output current of 500mA, which can drive most SCM system boards.
8. Integrated protection diode, the signal line will not damage the module if there is an abnormal voltage occasionally.
9. Lead out the CTS/RTS/DSR/RI/DCD signal pins, which can facilitate hardware flow control.
10. Small size and high integration. The PCB is only 20*50mm, which only occupies the width of a USB interface. Even if the distance between the USB ports is very tight, it will not affect the insertion of other devices on the computer.
Pin description
1.5V/3.3V/1.8V selection pin: switch the short-circuit cap to select the output voltage. (Must be connected)
2. TX/RX: Serial data pin (refers to the TX/RX of the module, corresponding to the RX/TX of the external device)
3. VCC/GND: power/ground (GND must be connected, VCC can be left floating) hardware flow control pins are reserved, because they are rarely used, so the headers are not soldered by default.
The TX/RX pin short-circuit cap is directly connected at the time of delivery for testing functions, and can be removed when using.
This module support 5 V / 3.3 V / 1.8 V three level switch, VCC/TX/RX/RTS/CTS/DTR/DCD/RI/switch
The module features
1. Original FT232RL main control chip, fast speed and good stability.
2. Support Windows XP/WIN7/WIN8/WIN10 32/64-bit system.
3. Stable speed up to 3Mbps (3 times 921600).
4. The power supply VCC and signal level (including CTS/RTS/DTR/RI/DCD) can be freely switched at 5V/ 3.3v / 1.8v to adapt to different voltage systems.
5. Integrated power supply (blue), receiving (green) and sending (red) three indicator lights.
6. 500mA self-recovery fuse on board, automatically disconnect in case of overcurrent/short circuit, effectively protect computer safety.
7. Strong power supply capacity, up to 500mA current output, can drive most of the single-chip microcomputer system board.
8. Integrated protection diode, signal line occasionally abnormal voltage will not damage the module.
9. Lead out CTS/RTS/DSR/RI/DCD signal pins, which can facilitate hardware flow control.
10. Small size and high integration, PCB is only 20*50mm and only occupies the width of one USB port. Even if the USB port is very close to the computer, it will not affect the insertion of other devices.
Pin description
1.5v / 3.3v / 1.8v select pin: switch short circuit cap to select output voltage. (must be connected)
2.TX/RX: serial data pin (refers to the TX/RX of the module, corresponding to the RX/TX of the external device)
3.VCC/GND: power/ground (GND must be connected, VCC can be suspended)
Hardware flow control pin reserved, because it is rarely used, so the default row pin is not welded
TX/RX pin short circuit cap shall be connected directly when shipping, for testing function, and it can be removed when using.

Product description
SHT30 digital temperature and humidity sensor uses SHT30 chip. The new SHT3x digital humidity sensor series takes sensor technology to a new level. As the successor to the SHT2x series, it has been determined to set the next industry standard for humidity sensing. SHT3x humidity sensor series includes low-cost version SHT30 humidity sensor, standard version SHT31 humidity sensor and high-end version SHT35 humidity sensor.
Features
SHT3x is based on a newly optimized CMOSens® chip, which can improve reliability and accuracy indicators. SHT3x provides a series of new features, such as enhanced signal processing, two unique and user-selectable I2C addresses, an alarm mode with programmable humidity and temperature limits, and a communication speed of up to 1MHz.
Product parameter
Product model: SHT30 temperature and humidity sensor
Working voltage: 2.15-5.5V
Output signal: 11C digital signal
Humidity measurement range: 0~100% RH
Temperature measurement range: -40~ 125℃ (Because the shell and wire are not resistant to high temperature, please use it in the environment of -40~ 80℃)
Accuracy: ±2% RH ±0.2℃
IIC address: 0X44
Product shell material: ABS
Dimensions
Wiring instructions
Pin

Colour

Name

Describe
1

Black

GND

Land
2

Red

VCCC

Power supply 
(2.15-5.5V)
3

White

SDA

Data line
4

Yellow

SCL

Clock line