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QC3.0 QC2.0 USB DC-DC Buck Converter Charging Step Down Module 6-32V 9V 12V 24V to Fast Quick Charger Circuit Board 3V 5V 12V
 Input voltage range: 6V-32V
 
· Output voltage: default 5V, automatically adjust between 3-12V after triggering fast charge
· Output power: up to 24W (5V/3.4A, 9V/2.5A, 12V/2A, etc.)
· Output voltage cable compensation function
· Conversion efficiency: 90% -97%
· Support multiple fast charging protocols
· Input overvoltage and undervoltage protection
· Input overcurrent protection
· Output overcurrent, short circuit protection
· Machine over temperature protection
Support fast charge agreement
 
· Support DCP protocol, BC1.2, Apple, Samsung protocol
· Support Huawei Fast Charge Protocol FCP/SCP
· Support Huawei Fast Charge Protocol AFC
· Support Spreadtrum Fast Charge Protocol SFCP
· Support Qualcomm QC2.0 and 3.0
· Support MTK PE1.1/PE2.0
 
 

QC3.0 QC2.0 USB DC-DC Buck Converter Charging Step Down Module 6-32V 9V 12V 24V to Fast Quick Charger Circuit Board 3V 5V 12V
 Input voltage range: 6V-32V
 
· Output voltage: default 5V, automatically adjust between 3-12V after triggering fast charge
· Output power: up to 24W (5V/3.4A, 9V/2.5A, 12V/2A, etc.)
· Output voltage cable compensation function
· Conversion efficiency: 90% -97%
· Support multiple fast charging protocols
· Input overvoltage and undervoltage protection
· Input overcurrent protection
· Output overcurrent, short circuit protection
· Machine over temperature protection
Support fast charge agreement
 
· Support DCP protocol, BC1.2, Apple, Samsung protocol
· Support Huawei Fast Charge Protocol FCP/SCP
· Support Huawei Fast Charge Protocol AFC
· Support Spreadtrum Fast Charge Protocol SFCP
· Support Qualcomm QC2.0 and 3.0
· Support MTK PE1.1/PE2.0
 
 

QC3.0 QC2.0 USB DC-DC Buck Converter Charging Step Down Module 6-32V 9V 12V 24V to Fast Quick Charger Circuit Board 3V 5V 12V
 Input voltage range: 6V-32V
 
· Output voltage: default 5V, automatically adjust between 3-12V after triggering fast charge
· Output power: up to 24W (5V/3.4A, 9V/2.5A, 12V/2A, etc.)
· Output voltage cable compensation function
· Conversion efficiency: 90% -97%
· Support multiple fast charging protocols
· Input overvoltage and undervoltage protection
· Input overcurrent protection
· Output overcurrent, short circuit protection
· Machine over temperature protection
Support fast charge agreement
 
· Support DCP protocol, BC1.2, Apple, Samsung protocol
· Support Huawei Fast Charge Protocol FCP/SCP
· Support Huawei Fast Charge Protocol AFC
· Support Spreadtrum Fast Charge Protocol SFCP
· Support Qualcomm QC2.0 and 3.0
· Support MTK PE1.1/PE2.0
 
 

 
 

 
 

 
 

 
 

module size :36*15*7
 
voltage :3.3-12VDC
 
current: working <20ma
            output <30ma
 
connect port : -  DO AO
 
                     DO :digital  output 
                     AO :analog output  (voltage   )
 
when soil humidity less than seting humidity ,DO output low level 
 
:power
-  :  power -
 
when connect power ,the power LED will ligthing ,the module start to work.
 
 
Package : 1PCS sensor probe 1pcs module
 
 

module size :36*15*7
 
voltage :3.3-12VDC
 
current: working <20ma
            output <30ma
 
connect port : -  DO AO
 
                     DO :digital  output 
                     AO :analog output  (voltage   )
 
when soil humidity less than seting humidity ,DO output low level 
 
:power
-  :  power -
 
when connect power ,the power LED will ligthing ,the module start to work.
 
 
Package : 1PCS sensor probe 1pcs module
 
 

module size :36*15*7
 
voltage :3.3-12VDC
 
current: working <20ma
            output <30ma
 
connect port : -  DO AO
 
                     DO :digital  output 
                     AO :analog output  (voltage   )
 
when soil humidity less than seting humidity ,DO output low level 
 
:power
-  :  power -
 
when connect power ,the power LED will ligthing ,the module start to work.
 
 
Package : 1PCS sensor probe 1pcs module
 
 

Product features:
1. The ultra-thin, subminiature
2. The full voltage input (90 ~ 264 vac)
3. Low ripple and low noise
4. Output overload short circuit protection function
5. High efficiency and power density
6. Product design to meet the EMC and safety testing requirements
7. Low power consumption, green environmental protection, no-load loss < 0.1 W
Aging and
8.100% load test
9. Meet the requirements of UL, CE,
The quality guarantee period of 10.1 years
2. Environmental conditions
The name of the project
Technical indicators:Single bit
Working temperature: - 20-60 degree
Storage temperature: 80-40 -degree
Relative humidity: 5-95.%
The cooling way: Natural cooling
The atmospheric pressure: 80-106Kpa
The altitude :2000M or less
vibration
Vibration coefficient of 10 ~ 500 hz, 2 g10min. / 1 cycle, 60 min. Each along the X, Y, Z axes
3. The electrical characteristics
 
1. The input features (test) at room temperature.
The name of the project
The technical requirements:Single bit
The rated input voltage:100-100.VAc
The input voltage range:90-90.VAc
Maximum input current:0.2 or less a.
Input surge current;10 or less a.
Maximum input voltage:270 or less VAc
Input soft start: 50 or less MS
Efficiency of low input voltage: Vin = 110 vac, output with 69 or more %
High input voltage: Vin = 220 vac, output with 70 or more %
Long-term reliability:MTBF 100000 or more H.
No load rated output voltage: 5 / - 0.1 VDc
Full rated output voltage: 5 / - 0.2 VDc A
short time maximum output current: P 1000 ma
The maximum output current for a long time: P 600 ma
Voltage regulation: / - 0.2 %
Load regulation: / - 0.5  %
The output ripple and noise: (mVp - p) 50 or less
The rated input voltage and output load.With 20 MHZ bandwidth oscilloscope,
Load and 10 uF and 0.1 uF capacitance test. The MV
Switch machine overshoot
(rated input voltage, output and 10% load) 5 or less % VO
Output over-current protection
Output the maximum load of 150-200%
a.
Output short circuit protection
Directly to the output of the normal short circuit, short circuit automatically resume normal work after removal
4. Safety features:
4.1 the product design as to meet the requirements of UL, CE safety certification.
4.2 safety and electromagnetic compatibility
The input design USES UL 0.5 A insurance;
PCB board made of double-sided copper-clad boards material is 94 - where V0 fire rating level;
Safety standards in accordance with UL1012 EN60950, UL60950
Insulation voltage I/P - O/P: 2500 vac
Insulation resistance I/P - O/P > 100 m Ohms / 500 VDC 25 degree 70% RH
Conduction and radiation in line with the EN55011, EN55022 (CISPR22)
Electrostatic discharge IEC/EN 61000-4-2 level 4 8 kv / 15 kv
Radiofrequency radiation immunity IEC/EN 61000-4-3 can be found in the application
4.3 safety design temperature
At normal temperature on our power capacitor, main converter so on surface temperature does not exceed 90 degree; the largest
The shell surface maximum temperature does not exceed 60 degree;

Probe DS18B20 temperature sensor chip using original
High quality stainless steel pipe anti- rust waterproof package
Stainless steel housing (6 * 50mm), lead length 100cm
After rigorous testing each probe individually wrapped
3.0V ~ 5.5V power supply
9 to 12 adjustable resolution
Temperature range -55 ° ~ 125 °
No external components , the unique single- bus interface
Output leads : Red (VCC), yellow (DATA), black (GND)

Temperature and humidity sensor SHT30 SHT31 SHT35 Circuit PCB Pinboard SHT20 SHT21 SHT25 Double-sided circuit switch board

Product Name: Two-channel Bluetooth 5.0 power amplifier board
Product model: XH-A158
Input voltage: DC5V
Output power: 5W*2 4
Audio input: Bluetooth 5.0 
Amplifier Chip:PAM8403 X2
Number of channels: two channels
Size: 45*42*25MM
Installation aperture: 3MM
Package Included:Bluetooth 5.0 HD Amplifier Board

Product Name : DC Power Cable;Connector Type : DC 5.5x2.1mm male
Main Material : Plastic, Metal;Color : Black
DC Female Connector Cable Length : 15cm
Package Content : 10pcs x male Connector

 

34725 TCS34725 Color Sensor Color Sensor Development Board Module
 
TCS3472 devices available in red, green and blue (RGB) and digital Mingguang induction return value. Color sensitive photodiode integrated sheet cutting and localized infrared light blocking filter, minimizing the infrared spectral components of the incident light, so that more accurate color management. High sensitivity, wide dynamic range and an infrared light blocking filter makes TCS3472 become ideal lighting conditions change and through color sensitive element attenuating materials under conditions of solution.
 
 

34725 TCS34725 Color Sensor Color Sensor Development Board Module
 
TCS3472 devices available in red, green and blue (RGB) and digital Mingguang induction return value. Color sensitive photodiode integrated sheet cutting and localized infrared light blocking filter, minimizing the infrared spectral components of the incident light, so that more accurate color management. High sensitivity, wide dynamic range and an infrared light blocking filter makes TCS3472 become ideal lighting conditions change and through color sensitive element attenuating materials under conditions of solution.
 
 

34725 TCS34725 Color Sensor Color Sensor Development Board Module
 
TCS3472 devices available in red, green and blue (RGB) and digital Mingguang induction return value. Color sensitive photodiode integrated sheet cutting and localized infrared light blocking filter, minimizing the infrared spectral components of the incident light, so that more accurate color management. High sensitivity, wide dynamic range and an infrared light blocking filter makes TCS3472 become ideal lighting conditions change and through color sensitive element attenuating materials under conditions of solution.
 
 

Official DOIT Mini Ultra-small size ESP-M2 from esp8285 Serial Wireless WiFi Transmission Module Fully Compatible with ESP8266

DS18B20 DS18B20 18B20 TO92 Quantity temperature sensor
 

 
Item Description
Features:
Antenna length : 5 cm
Frequency range: 824MHz to 960MHz 1710MHz to 1990MHz
Gain :3dBi
Polarization in the form: Vertical
VSWR V.S.W.R: ≤ 1.6 (SMA)
Connector Type : Standard SMA Right Angle
Output impedance: 50Ω
Package including:
 
10pcs Antenna L shape SMA Right Angle Male compatible for GSM GPRS SIM900 Module Board
 
 
 

WH148 B10K Linear Potentiometer 15mm Shaft

Hollow needles desoldering tool electronic components Stainless steel 8Pcs/lot
 

Include: 10 * Wheel (not include N20 motor)
Diameter: 34MM
Aperture: D-3mm
 

 
 
 
 
 
 
 
3D printer Stepper Motor Flexible Coupling Coupler /Shaft Couplings 5 mm*8mm**25 mm
 
 
Description:
3D printer Stepper Motor Flexible Coupling Coupler
Size: 5 mm*8mm**25 mm
 
 
Product Included:
Flexible Couplings
 
 
 
 
 
 
 
 
 
 
 

Super small size DC - DC synchronous rectification buck module
 
Areas of application:
Model aircraft dedicated DC - DC step-down module (2 s ~ 5 s polymer li-ion battery), DIY mobile power supply, car power supply, communication power supply equipment, a variety of occasions of volume and weight have strict requirements.
 
Technical parameters:
Model name
Mini - 360 (super small size DC - DC synchronous rectification buck module)
Nature of the module
The isolation step-down
Rectifying way
The synchronous rectifier
The input voltage
4.75 V - 23 V
The output voltage
1.0 V - 17 V
The output current
Peak 3 A and 1.8 A long time
Conversion efficiency
96% (highest)
Switching frequency
340 KHZ
The output ripple
30 mv (light)
Load regulation
Plus or minus 0.5%
Voltage regulation
Plus or minus 2.5%
Working temperature
- 40 to 85
The peripheral size
17 * 11 * 3.8 (length * width * height) (mm)
 
Features: use a body shaping power inductor and synchronous rectifier control chip, a smaller, more efficient.

HTU31D is a digital communication module. This relative humidity sensor is surface mounted and can also provide temperature output. The sensor provides fast response, high precision measurement and low hysteresis even in extreme temperature and humidity conditions. The sensor operates in the temperature range from -40°C to 125°C, with 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 operate in the voltage range of 3.3V to 5.5V, and can maintain A operating current of only 450 A, or as low as 0.05 A in sleep mode. The sensor complys with AEC Q100 Grade 1 in a compact 6-pin DFN package and is 2.5 mm by 2.5 mm by 0.9 mm in size. In addition to operating in harsh environments, the sensor is also suitable for HVAC, home appliances, respiratory equipment and environmental monitoring solutions.
Designed to meet the needs of the environment and end users, HTU31 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 realize linear response, so that the system performance can reach the optimal. The sensor maintains a strict linear response curve with a humidity measurement range of (0-100% ) and temperature measurement range of (-40° to 125°C);
2. Fast response time: HTU31 sensor has humidity mold structure, and the response time is very fast (T63% < 5 seconds). Even after condensation, the response time of the sensor can reach t63% < 10 seconds, allowing the system to maintain performance.
3, High performance: HTU31 sensor is provided with a specific mold and rated IP67 seal rating. It also has a filter for continuous performance, low hysteria and accurate measurement of the environment (temperature and humidity) even when exposed to high temperature, high humidity or condensation.

Raspberry Pi 4 model B official case Raspberry Pi 4B case

This is a breakout board for the very handy 16-Channel Analog/Digital Multiplexer/Demultiplexer CD74HC4067.
This chip is like a rotary switch - it internally routes the common pin
(COM in the schematic, SIG on the board)to one of 16 channel pins (CHANxx).
It works with both digital and analog signals (the voltage can't be higher than VCC),
and the connections function in either direction.
To control it, connect 4 digital outputs to the chip's address select pins (S0-S3),
and send it the binary address of the channel you want (see the datasheet for details).
This allows you to connect up to 16 sensors to your system using only 5 pins!
Since the mux/demux also works with digital signals,
you can use it to pipe TTL-level serial data to or from multiple devices.
For example, you could use it to connect the TX pins of 16 devices to one RX pin on your microcontroller.
You can then select any one of those 16 devices to listen to.
If you want two-way communications, you can add a second board to route
your microcontroller's TX line to 16 device's RX lines.
By using multiple boards, you can create similar arrangements for I2C, SPI, etc. 
The internal switches are bidirectional, support voltages between ground and VCC,
have low on resistance and low off leakage, and to prevent crosstalk, perform break-before-make switching.
The board also breaks out the chip's enable pin, which when driven high,
will completely disconnect the common pin (all switches off).
 
 

Features : 
100% Brand New   
Voltage: DC 6-36V 
Output current: 300mA 
3 Wire 
Polarity: NPN 
Dimention: M12x10x55mm 
Detection Distance: 4 mm 
Ouput Status: Normally Open 
Part number: LJ12A3-4-Z/BX 
Detection objects: Conductor 
Package Inclues:     
     
1 x Inductive Proximity Sensor Detection Switch NPN DC6-36V LJ12A3-4-Z/BX
 
 

SMT SMD Component Welding Practice Board Soldering DIY Kit Resitor Diode Transistor By start Learning Electronic
 
Package Included:
1 X Board
20 X 0805 SMD Resistor
20 X 0603 SMD Resistor
10 X 1206 SMD Resistor
10 X 1206 Diodes
1 X 0805 Diodes
6 X SOT-23 Transistor
1 X SOP16 Chip(pin distance is 0.127MM)
 
 

VL53L0X Time-of-Flight (ToF) Laser Ranging Sensor Breakout 940nm GY-VL53L0XV2 Laser Distance Module I2C IIC
 
 

VL53L0X Time-of-Flight (ToF) Laser Ranging Sensor Breakout 940nm GY-VL53L0XV2 Laser Distance Module I2C IIC
 
 

VL53L0X Time-of-Flight (ToF) Laser Ranging Sensor Breakout 940nm GY-VL53L0XV2 Laser Distance Module I2C IIC
 
 

VL53L0X Time-of-Flight (ToF) Laser Ranging Sensor Breakout 940nm GY-VL53L0XV2 Laser Distance Module I2C IIC
 
 

Description:
The VL53L1X is a state-of-the-art, Time-of-Flight (ToF), laser-ranging sensor, enhancing the ST FlightSense product family. It is the fastest miniature ToF sensor on the market with accurate ranging up to 4 m and fast ranging frequency up to 50 Hz
Unlike conventional IR sensors, the VL53L1X uses ST's latest generation ToF technology which allows absolute distance measurement whatever the target color and reflectance.
It is also possible to program the size of the ROI on the receiving array, allowing the sensor FoV to be reduced.
 
Features:
Fully integrated miniature module
Emitter: 940 nm invisible laser (Class1)
SPAD (single photon avalanche diode) receiving array with integrated lens
Low-power microcontroller running advanced digital firmware
Pin-to-pin compatible with the VL53L0X FlightSense ranging sensor
Fast and accurate long distance ranging
Up to 400 cm distance measurement
Up to 50 Hz ranging frequency
Typical full field-of-view (FoV): 27 °
Programmable region-of-interest (ROI) size on the receiving array, allowing the sensor FoV to be reduced
Programmable ROI position on the receiving array, providing multizone operation control from the host
Easy integration
Single reflowable component
Can be hidden behind many cover window materials
Software driver and code examples for turnkey ranging
Single power supply (2v8)
I2;C interface (up to 400 kHz)
Shutdown and interrupt pin

What's new about V3.0.0
 
Optimize the circuit
 
Add Deep-Sleep jumper.
Default firmware: lastest MicroPython ESP8266 firmware.
 
 
Features
 
11 digital input/output pins, all pins have interrupt/pwm/I2C/one-wire supported(except D0)
1 analog input(3.2V max input)
a Micro USB connection
Compatible with for MicroPython, for Arduino, for Nodemcu
lots of Shields
 
 
Package include:
 
 
Long femalepinsx2pcs 
Short female pins x2pcs
Normal pins x2pcs
for WEMOS D1 mini Boardx1pcs

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