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The shield is fully assembled, tested and ready to go. No wiring, no soldering! Simply plug it in and load up our library - you'll have it running in under 10 minutes! Works best with any classic  (UNO/Duemilanove/Diecimila). This shield does NOT work with the Mega but its going to be half the speed of the Uno-type boards because of the way the Mega rearranges all the pins (there is no way to get around this!) This shield is not Leonardo-compatible
Description:
Spice up your project with a beautiful large touchscreen display shield with built in microSD card connection. This TFT display is big (2.4" diagonal) bright (4 white-LED backlight) and colorful (18-bit 262,000 different shades)! 240x320 pixels with individual pixel control. It has way more resolution than a black and white 128x64 display. As a bonus, this display has a resistive touchscreen attached to it already, so you can detect finger presses anywhere on the screen.
 
Technical Details:
2.4" diagonal LCD TFT display
240x320 resolution, 18-bit (262,000) color
spfd5408 controller with built in video RAM buffer
8 bit digital interface, plus 4 control lines
Uses digital pins 5-13 and analog 0-3. That means you can use digital pins 2, 3 and analog 4 and 5. Pin 12 is available if not using the microSD
Works with any '328 or Mega (Leonardo not supported yet)
5V compatible! Use with 3.3V or 5V logic
Onboard 3.3V 300mA LDO regulator
4 white LED backlight. On by default but you can connect the transistor to a digital pin for backlight control
4-wire resistive touch screen
   

Product Description Hardware Specifications Chipset ESPRESSIF-ESP32 240MHz Xtensa® single-/dual-core 32-bit LX6 microprocessor FLASH QSPI flash 4MB / PSRAM 8MB SRAM 520 kB SRAM Button Reset USB to TTL CP2104 Modular interface UART.SPI.SDIO.I2C.LED PWM.TV PWM.I2S.IRGPIO.capacitor touch sensor.ADC.DACLNA pre-amplifier On-board clock 40MHz crystal oscillator Working voltage 2.7V-3.6V Working current About 70mA Sleep current About 300uA SIM card Only supports Nano SIM card Working temperature range -40° ~ 85° Size&Weight 78.83mm*28.92mm*8.06mm(11.77g) Power Supply Specifications Power Supply USB 5V/1A Charging current 500mA Battery 3.7V lithium battery JST Connector 2Pin 1.25mm USB Type-C Wi-Fi Standard FCC/CE-RED/IC/TELEC/KCC/SRRC/NCC(esp32 chip) Protocol 802.11 b/g/n(802.11n,speed up to150Mbps)A-MPDU and A-MSDU polymerization,support 0.4μS Protection interval Frequency range 2.4GHz~2.5GHz(2400M~2483.5M) Transmit Power 22dBm Communication distance 300m Bluetooth Protocol meet bluetooth v4.2BR/EDR and BLE standard Radio frequency with -97dBm sensitivity NZIF receiver Class-1,Class-2&Class-3 emitter AFH Audio frequency CVSD&SBC audio frequency Software specification Wi-Fi Mode Station/SoftAP/SoftAP Station/P2P Security mechanism WPA/WPA2/WPA2-Enterprise/WPS Encryption Type AES/RSA/ECC/SHA Firmware upgrade UART download/OTA(Through network/host to download and write firmware) Software Development Support cloud server development /SDK for user firmware development Networking protocol IPv4.IPv6.SSL.TCP/UDP/HTTP/FTP/MQTT User Configuration AT Instruction set, cloud server, android/iOSapp OS FreeRTOS More Information:https://github.com/Xinyuan-LilyGO/TTGO-T-Call

What's new with D1 mini Pro
4M bytes Flash
External antenna connector
Built-in ceramic antenna
New CP2104 USB-TO-UART IC
Same size as D1 mini, but more light
 
 

 
XH-M603 Charging Control Module 12-24V Storage Lithium Battery Charger Control Switch Protection Board
Product Introduction:
1.Model:XH-M603
2.Input Voltage:DC 10-30V 
3.Display Precision:0.1V 
4.Control Precision:0.1V 
5.Output Type:direct output 
6.Voltage Tolerance: /-0.1V 
7.Application Fields:12-24V storage battery 
8.Size;82*58*18mm
 
 
Using Method:
 
 
1.Set Starting Voltage:in normal display voltage state,press the button will display start charging voltage;long press for 3s the digital tube will flash;you can start or stop button to set starting up charge voltage value 
 
2.Set Stop Voltage:in normal display voltage state,press the button will display stoping charge voltage;long press the button for 3s the digital tube will flash;you can start or stop button to set stoping charge voltage value
 
3.Factory Reset:in power on state press the start/stop button at the same time,digital tube will display 888;that represents factory reset settings

Description
Module name :250W boost constant current module
Module properties: non-isolated step-up module (BOOST)
Input voltage: DC8.5V-48V
Input current: 10A (MAX) exceeds 8A please enhance heat dissipation
Quiescent current: 10mA (12V liter 20V, the output voltage, the higher
the current will increase too quiet)
Output voltage: 10-50V continuously adjustable
Constant] range: 0.2-8A
Temperature: -40 to 85 degrees (ambient temperature is too high, please enhance heat dissipation)
Operating frequency: 150KHz
Conversion efficiency: up to 96%
Overcurrent protection: There
Input reverse polarity protection: Yes,
Installation: 4 3mm screw holes
Connection method: Connection Output
Module size: Length 70mm width 36mm height 13mm
Single module: 50 g
Applications:
1, DIY a power supply, 12V can input and output can 12-50V adjustable.
2, the power supply for your electronic device, according to your
system can set the output voltage value.
3, as the car power supply for your laptop, PDA or a variety of digital
products supply.
4, DIY a mobile notebook power supply: 12V coupled with high-capacity
lithium battery pack, so you can go where light where books.
5, solar panel regulator.
6, to the battery, rechargeable lithium batteries.
7, driving high-power LED lights.

 
 Product Description
LED bulb Power: 10W Luminance: 900-1000LM
Current: 800-900mA Voltage: DC 9-12V(if use DC 12,Recommended Series a about 1.50 ohm resistor to use)
Integrated approach: Series 3 and 3
Color: Daylight white /warm white /red /blue /green /yellow
Size (L x W): Approx. 1.15 x 0.8 inch / 2.9 x 2 cm
Light-emitting part of the size: 11mm * 11mm
LifeSpan Time : > 50,000 hours
Application: Landscape scene / spot lighting Architectural lighting Display scene Artwork lighting general lighting Amusement park scene Aquarium lighting 10x LED bulb

 
 Product Description
LED bulb Power: 10W Luminance: 900-1000LM
Current: 800-900mA Voltage: DC 9-12V(if use DC 12,Recommended Series a about 1.50 ohm resistor to use)
Integrated approach: Series 3 and 3
Color: Daylight white /warm white /red /blue /green /yellow
Size (L x W): Approx. 1.15 x 0.8 inch / 2.9 x 2 cm
Light-emitting part of the size: 11mm * 11mm
LifeSpan Time : > 50,000 hours
Application: Landscape scene / spot lighting Architectural lighting Display scene Artwork lighting general lighting Amusement park scene Aquarium lighting 10x LED bulb

 
 Product Description
LED bulb Power: 10W Luminance: 900-1000LM
Current: 800-900mA Voltage: DC 9-12V(if use DC 12,Recommended Series a about 1.50 ohm resistor to use)
Integrated approach: Series 3 and 3
Color: Daylight white /warm white /red /blue /green /yellow
Size (L x W): Approx. 1.15 x 0.8 inch / 2.9 x 2 cm
Light-emitting part of the size: 11mm * 11mm
LifeSpan Time : > 50,000 hours
Application: Landscape scene / spot lighting Architectural lighting Display scene Artwork lighting general lighting Amusement park scene Aquarium lighting 10x LED bulb

 
 Product Description
LED bulb Power: 10W Luminance: 900-1000LM
Current: 800-900mA Voltage: DC 9-12V(if use DC 12,Recommended Series a about 1.50 ohm resistor to use)
Integrated approach: Series 3 and 3
Color: Daylight white /warm white /red /blue /green /yellow
Size (L x W): Approx. 1.15 x 0.8 inch / 2.9 x 2 cm
Light-emitting part of the size: 11mm * 11mm
LifeSpan Time : > 50,000 hours
Application: Landscape scene / spot lighting Architectural lighting Display scene Artwork lighting general lighting Amusement park scene Aquarium lighting 10x LED bulb

 
 Product Description
LED bulb Power: 10W Luminance: 900-1000LM
Current: 800-900mA Voltage: DC 9-12V(if use DC 12,Recommended Series a about 1.50 ohm resistor to use)
Integrated approach: Series 3 and 3
Color: Daylight white /warm white /red /blue /green /yellow
Size (L x W): Approx. 1.15 x 0.8 inch / 2.9 x 2 cm
Light-emitting part of the size: 11mm * 11mm
LifeSpan Time : > 50,000 hours
Application: Landscape scene / spot lighting Architectural lighting Display scene Artwork lighting general lighting Amusement park scene Aquarium lighting 10x LED bulb

 
 Product Description
LED bulb Power: 10W Luminance: 900-1000LM
Current: 800-900mA Voltage: DC 9-12V(if use DC 12,Recommended Series a about 1.50 ohm resistor to use)
Integrated approach: Series 3 and 3
Color: Daylight white /warm white /red /blue /green /yellow
Size (L x W): Approx. 1.15 x 0.8 inch / 2.9 x 2 cm
Light-emitting part of the size: 11mm * 11mm
LifeSpan Time : > 50,000 hours
Application: Landscape scene / spot lighting Architectural lighting Display scene Artwork lighting general lighting Amusement park scene Aquarium lighting 10x LED bulb

 
MAX9814
The MAX9814 is a low-cost, high-performance microphone amplifier with automatic gain control (AGC) and low-noise microphone bias. Device features a low-noise front-end amplifier, variable gain amplifier (VGA), output amplifier, microphone bias voltage generator and AGC control circuit
 
Specifications:
 
Supply Voltage: 2.7v-5.5v @ 3mA current
Output: 2Vpp on 1.25V bias
Frequency Response: 20Hz - 20 KHz
Programmable Attack and Release Ratio
Automatic gain, selectable max from 40dB, 50dB or 60dB
Low Input-Referred Noise Density of 30nV /
Low THD: 0.04% (typ)
 
Automatic Gain Control (AGC)
3 gain setting (40dB, 50dB, 60dB)
Programmable operation time
Programmable operation and release time than
2.7V to 5.5V supply voltage range
Low input noise density 30nV /
Low THD: 0.04% (typ)
Low-Power Shutdown Mode
Built-2V low-noise microphone bias
Space-saving 14-pin TDFN (3mm x 3mm) Package
 
-40 ° C to 85 ° C extended temperature range

Product parameters:
Product size: 45 * 28mm
Operating voltage: DC5V
Communication: WIFI (ESP8266 module)
Serial communication parameters: 9600,8,1,0,0
Transmission distance: the maximum transmission distance of 400m (open environment, mobile phone equipped with WIFI module)
Load: 10A/250VAC 10A/30VDC, the relay pull 100,000 times
 
Way of working:
Mobile phone equipped with WiFi module;
Mobile phone and WiFI module equipped with the same router, through the mobile phone APP to control the relay; this mode, the transmission distance depends on the signal router.
 
 
Tips:
ESP8266 module has a timeout mechanism, when the phone for some time (the default 180S) did not give instructions to the module, the module will kick off the phone, the computer can send AT CIPSTO = to modify this time (Time range 0-7200), such as: AT CIPSTO = 3600.
When the module on the WIFI module is unplugged, USB to TTL module RX, TX, GND pins were connected to the module RX, TX, GND pin, IN , IN- 5V power supply, then the module can be used as a USB Relays to use, scalability.

Product parameters:
Product size: 45 * 28mm
Operating voltage: DC5V
Communication: WIFI (ESP8266 module)
Serial communication parameters: 9600,8,1,0,0
Transmission distance: the maximum transmission distance of 400m (open environment, mobile phone equipped with WIFI module)
Load: 10A/250VAC 10A/30VDC, the relay pull 100,000 times
 
Way of working:
Mobile phone equipped with WiFi module;
Mobile phone and WiFI module equipped with the same router, through the mobile phone APP to control the relay; this mode, the transmission distance depends on the signal router.
 
 
Tips:
ESP8266 module has a timeout mechanism, when the phone for some time (the default 180S) did not give instructions to the module, the module will kick off the phone, the computer can send AT CIPSTO = to modify this time (Time range 0-7200), such as: AT CIPSTO = 3600.
When the module on the WIFI module is unplugged, USB to TTL module RX, TX, GND pins were connected to the module RX, TX, GND pin, IN , IN- 5V power supply, then the module can be used as a USB Relays to use, scalability.

Product Features
Low-power dual-core 32-bit CPU for application processors
Main frequency up to 240MHz, computing power up to 600 DMIPS
Built-in 520 KB SRAM, external 4M PSRAM
Supports interfaces such as UART/SPI/I2C/PWM/ADC/DAC
Support OV2640 and OV7670 cameras, built-in flash
Support image WiFi upload
Support TF card
Support multiple sleep modes
Embedded Lwip and FreeRTOS
Support STA/AP/STA AP working mode
Support Smart Config/AirKiss one-click distribution network
Support secondary development
 

Product Features
Low-power dual-core 32-bit CPU for application processors
Main frequency up to 240MHz, computing power up to 600 DMIPS
Built-in 520 KB SRAM, external 4M PSRAM
Supports interfaces such as UART/SPI/I2C/PWM/ADC/DAC
Support OV2640 and OV7670 cameras, built-in flash
Support image WiFi upload
Support TF card
Support multiple sleep modes
Embedded Lwip and FreeRTOS
Support STA/AP/STA AP working mode
Support Smart Config/AirKiss one-click distribution network
Support secondary development
 

Product Features
Low-power dual-core 32-bit CPU for application processors
Main frequency up to 240MHz, computing power up to 600 DMIPS
Built-in 520 KB SRAM, external 4M PSRAM
Supports interfaces such as UART/SPI/I2C/PWM/ADC/DAC
Support OV2640 and OV7670 cameras, built-in flash
Support image WiFi upload
Support TF card
Support multiple sleep modes
Embedded Lwip and FreeRTOS
Support STA/AP/STA AP working mode
Support Smart Config/AirKiss one-click distribution network
Support secondary development
 

Model: GY - 511
Size: 14.5 mm * 20.5 mm
Name: LSM303DLHC module (three axial magnetic field triaxial acceleration)
Chip built-in 12 bit AD converter, a 16-bit data output
Using high quality heavy gold PCB, machine welding process to ensure quality

Standard: USB2.0 standard, backward compatible, in line with RS485 standard
 
Direction control: automatic data flow control technology, automatic identification and control data transfer direction
 
Baud Rate :300-9216000bps, automatically detect the serial data rate signal
 
Load capacity: supports multipoint, each converter allows connecting 32 RS485 interface device
 
Interface protection: TVS tube protection, USB self-recovery protection
 
Support Windows98/ME/2000/XP/WIN7/Vista, Linux, Mac
 
Supports devices with RS485 interface: surveillance cameras, video capture device, fingerprint attendance machine, PBX, CNC machine, SCM, etc.
 
 
New products, industrial grade USB to 485 modules, 485 chips to facilitate the replacement for the 485 chip hardware debug easy to burn out the case easier to use.
 
USB to 485 programs on the market to analyze the
 
Option One: CH341 485; shortcomings unstable and prone to cause your computer to black;
 
Option Two: PL2303 RS232 RS485; This program is first converted into the serial port using the PL2303, then turn into a serial port 485; advantage of low cost, there may be unstable shortcomings industrial applications, high speed does not fit.
 
Option Three: FT232 485; advantages: industrial-grade applications, speed, anti-jamming capabilities are very good, very suitable for industrial areas, the individual's application. Disadvantages: high cost.

Feature :
1.Gilt PCB and Small dimension and easy to embed into your project
2.Support I2C.SPI and HSU (High Speed UART), Change between those modes
3.Support RFID reading and writing
SupportP2P communication with peers
Support NFC with Android phone
4.Typical Operating Distance have been updated to 5cm~7cm reading distance
5.Work in NFC Mode or RFID reader/writer Mode
6.RFID reader/writer supports:
1) 1k, 4k, Ultralight, and DesFire cards
2) ISO/IEC 14443-4 cards such as CD97BX, CD light, Desfire, P5CN072 (SMX)
3) Innovision Jewel cards such as IRT5001 card
4) FeliCa cards such as RCS_860 and RCS_854
7.Plug and play, for compatible
8.Built in PCB Antenna, with 4cm~6cm communication distance
9.On-board level shifter, Standard 5V TTL for I2C and UART, 3.3V TTL SPI
10.Work as RFID reader/writer
11.Work as 1443-A card or a virtual card
12.Exchange data with other NFC devices such as smartphone
 

​1. Red, Green, Blue (RGB), and White Light Sensing with IR Blocking Filter 
2. Programmable Analog Gain and Integration Time 
3. 3,800,000:1 Dynamic Range 
4. Very High Sensitivity ? Ideally Suited for Operation Behind Dark Glass 
5. Maskable Interrupt 
6. Programmable Upper and Lower Thresholds with Persistence Filter 
7. Power Management 
8. Low Power ? 2.5-uA Sleep State 
9. 65-uA Wait State with Programmable Wait State Time from 2.4 ms to > 7 Seconds 
10. I2C Fast Mode Compatible Interface 
11. Data Rates up to 400 kbit/s 
12. Input Voltage Levels Compatible with VDD or 1.8 V Bus 
13. Register Set and Pin Compatible with the TCS3x71 Series 
14. Small 2 mm*2.4 mm Dual Flat No-Lead (FN) 
 
 
Applications 
1. RGB LED Backlight Control 
2. Light Color Temperature Measurement 
3. Ambient Light Sensing for Display Backlight Control 
4. Fluid and Gas Analysis 
5. Product Color Verification and Sorting

Description:
Want to make a hexapod walker? Maybe you're making a piece of art with tons of moving parts, or you need to drive a ton of LEDs with precise PWM output. Your microcontroller has a limited number of PWM outputs, and you find yourself running out! Not with the Adafruit 16-Channel 12-bit PWM/Servo Driver - I2C interface. With this pwm and servo driver breakout, you can control 16 free-running PWM outputs with just two pins! Need to run more than 16 PWM outputs? No problem. Chain together up to 62 of these beauties for up to an outstanding 992 PWM outputs.
Features:
Dimensions (no headers or terminal block) 2.5" x 1" x 0.1" (62.5mm x 25.4mm x 3mm)
Weight (no headers or terminal block): 5.5grams
Weight (with 3x4 headers & terminal block): 9grams
This board/chip uses I2C 7-bit address between 0x60-0x80, selectable with jumpers
Terminal block for power input (or you can use the 0.1" breakouts on the side)
Reverse polarity protection on the terminal block input
Green power-good LED
3 pin connectors in groups of 4 so you can plug in 16 servos at once (Servo plugs are slightly wider than 0.1" so you can only stack 4 next to each other on 0.1" header
"Chain-able" design
A spot to place a big capacitor on the V line (in case you need it)
220 ohm series resistors on all the output lines to protect them, and to make driving LEDs trivial
Solder jumpers for the 6 address select pins
i2c-controlled PWM driver with a built in clock. Unlike the TLC5940 family, you do not need to continuously send it signal tying up your microcontroller, its completely free running!
It is 5V compliant, which means you can control it from a 3.3V microcontroller and still safely drive up to 6V outputs (this is good for when you want to control white or blue LEDs with 3.4 forward voltages)
6 address select pins so you can wire up to 62 of these on a single i2c bus, a total of 992 outputs - that's a lot of servos or LEDs
Adjustable frequency PWM up to about 1.6 KHz
12-bit resolution for each output - for servos, that means about 4us resolution at 60Hz update rate
Configurable push-pull or open-drain output
Output enable pin to quickly disable all the outputs

Descriptions:
KCX_BT002 is a multi-purpose bluetooth audio module with bluetooth audio and BTcall. Support matching all kinds of smart phones on the market players to play music, and support telephone voice report, answering the telephone/end calls/redial recent calls, and other functions. Simply apply this decoding board into your product, it can be upgrade normal audio cable products to a wireless bluetooth audio.
 
Features:
1. Excellent durability and coexistence
2. Ensure the stability of the Bluetooth transmission through a variety of techniques 
3. Intuitive LED indicator
4. Voice prompt, telephone voice reporting
5. The external key is easy to use without the differential resistance
6. Wireless transmission distance ≥ 10 m
7. Typical applications: Home Bluetooth Speakers, Speaker Maintenance, Car player modified, Computer Speaker Upgrade, etc.
 
Specifications:
Power Supply: 3.3-5.0V
Working Current: 35mA
Channel: Stereo
Bluetooth Version: 4.2
Working Frequency: 2400-2485MHz
Receiving Sensitivity: -85dBm
Size: 3.1x1.4cm/1.22x0.55"
Quantity: 1 Pc
 
Note: 
Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid.
Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!
 
No Retail Package
 

 
Description:
Material: Electrical components
Color: See pictures
ZB2L3 battery capacity tester discharge type 1.2-12    V external load capacity of the battery and other tests 18650
Tools, single-function, by controlling the load off and get real-time integrated discharge current capacity results
Maximum support 15V 3A discharged through the discharge voltage and current, itself does not discharge
Maximum capacity statistics support 9999Ah (9999000mAh)
Automatically identify and develop appropriate battery termination voltage can also be manually adjusted  
 
Specifications:
Power supply voltage: DC4.5-6V (micro USB connector)
Operating Current: less than 70mA
Discharge voltage: 1.00V-15.00V 0.01V resolution
Termination voltage range: 0.5-11.0V
Supported by current: 3.000A 0.001A resolution
Maximum voltage measurement error: 1% 0.02V
Maximum current measurement error: 1.5% - 0.008A
Maximum battery capacity range: 9999Ah (1Ah = 1000mAh) greater value by shifting the decimal point to switch, when the display is less than 10Ah X.XXX, as shown above to achieve 10Ah XX.XX, and so on.
Board size: 50mmX37mm
Finished Size: 50mmX37mmX17mm (length X width X height maximum position size, contains copper foot height)  
 
Instructions:
1. The first test should be fully charged battery.
2. Connect the battery to be tested positive to positive input, a negative input to the negative, can not be reversed (with load reversal may damage the circuit)! Load connected to the output of the positive and negative output, to work through the tester micro USB power supply (not available desktop or laptop USB powered), then the battery voltage.
3. Direct start test need only one press of the "OK" button, the tester can automatically develop an appropriate termination voltage of the battery full charge voltage, and will start flashing after the test three times. Need to develop artificial termination voltage only when the battery voltage display state by pressing " " or "-" buttons to modify the termination voltage display beginning with P, behind the representative voltage resolution 0.1V, set up after pressing the "OK "start testing.
4. After the start of the test the tester will control the load of the electronic switch is turned on, the test data shows that the process will release capacity (Ah), current discharge current (A) and battery voltage (V) between the wheel was. When the battery voltage reaches the set cut-off voltage, load control switches off the tester display data stays in capacity (Ah) and above and the corresponding indicator flashes quickly together, now displays the actual capacity of the battery is discharging capacity, about the press "OK" to terminate flashing allows stable data display, press again "OK" button to return to the power-on state can just replace the battery test the next section ......  
 
Error codes and their meanings:
Err1: battery voltage is above 15V
Err2: battery voltage is lower than the termination voltage
Err3: Battery can not afford to load or discharge current line too much resistance
Err4: overcurrent (current exceeds 3.1A)  
 
Note:    Use the resistance of the discharge process, resistive load will seriously heat, please pay attention to safety!
This circuit voltage in order to improve the measurement accuracy, specially designed DC bias, when the terminal displays nothing then a small voltage does not affect the actual measurement, if you are shorting the input terminals (absolute 0V) will show 0

Description:
1. Support the full range of STM32 SWD interface debugging, simple interface (including power supply), 4 line speed, stable work; Interface definition shell directly address! Don\'t need to read instructions!
2, support all series STM8 SWIM download debugging (common development environment such as IAR, STVD etc.) are supported. Support the software version is as follows:
ST - LINK Utility 2.0 and above
STVD 2 and above
STVP 3.2.3 and above
IAR EWARM V6.20 and above
IAR EWSTM8 V1.30 and above
KEIL RVMDK V4.21 and above
3. Support the firmware upgrade automatically, to ensure that the ST company product support. When they leave the firmware has been upgraded to the latest V2. The J17. S4.
4. Increase the 5 v power output, the output it can protect the I/O port, not afraid of error cause damage of ST - LINK V2!
5. Easy interface to use pure copper plating 2.54 spacing horn, with 20 cm dupont line, can deal with different target board line sequence, flexible connection;
6. Use U disk aluminum alloy shell to protect the mainboard, convenient to carry, not afraid of static electricity, not afraid of tumbling.

The input voltage: 7-32 v
The Output voltage: 0.8-28 V continuous adjustable
The Output current: adjustable, maximum 9 a
The Output power: 250 w (high temperature to enhance heat dissipation)
Working temperature: - 40 - 85
Conversion efficiency: 88% - 95%
 
 

 
 
ESP32 is a complete,small form factor(SFF)802.11 b/g/n/e/i(2.4GHz)WLAN plus BT4.2combo solution optimized for low-power,mobile consumer electronics,wearable andInternet of Things(IOT) devices.ESP32 integrates all WLAN and BT functionalityin a single package to support a low cost,layout-friendly implementation whileallowing flexibility for platform specific customization.
   ESP32 is a highly integrated solution withless than 10 external components.
   ESp32 integrates the transmit /receive RFfunctionality including the antenna swiches,RF balun,power amplifier,low noisereceive amplifier,filters,power management,and advanced calibratiom ciacuitriesthat allow the solution to dynamically adjust itself to adapt to externalcircuit implefections.
   The entire solution reduces Printed CircuitBoard (PCB) area,time-to-market,and bill-of-material(BOM)costs while addingcapablities and processing power.the mass production of ESP32 does not requireexpensive and specialized Wi-Fi test equipment.
   ESP32's uitra low power consumption radioarchiteature and proprietary power save technologies extend batter life inreal-world applications,using the following features:
   Fine granularity clock-gating
   Multiple low-power modes,and
   Dynamic voltage scaling
   For instance,in a low-power IoT sensor hubapplication scenario,ESP32 is woken up periodically and only when a specifiedcondition is detected;low duty cycle is used to minimize the amount of energythat the chip expends.The output power of the power amplifier can also beadjusted,so that an optimal trade off between the communication range,data rateand power consumption is achieved.

Notice: The new tracking number for China Post Ordinary Small Packet Plus can be traced only befor it arrive the airport of your country,please choose China Post Air Mail if you want a full tracking info.
 
Tracking info of  China Post Ordinary Small Packet Plus can be check here: www.17track.net/en
Description:
 
External threads: 1/2"
temperature: -25~ 80 centigrade
Allowing pressure: pressure 1.75Mpa
Operating humidity range: 35% ~90% RH (no frost)
Use temperature: ≤ 80centigrade
Load capacity: ≤ 10 mA (DC 5V)
Working voltage range: DC 5~18 v
Maximum operating current: 15 mA (DC 5V)
The lowest rated working voltage: DC4.5 5V-24V
Quantity:1PC
Size : 5.7cmX4cm/2.24''X1.57''
Color : white
Lead way:
Red IN connect the anode
Yellow OUT signal output line
Black GND connect the cathode

Notice: The new tracking number for China Post Ordinary Small Packet Plus can be traced only befor it arrive the airport of your country,please choose China Post Air Mail if you want a full tracking info.
 
Tracking info of  China Post Ordinary Small Packet Plus can be check here: www.17track.net/en

ESP8266 10A 220V Network Relay WIFI Module
 
Specifications:
Model: ESP8266
Color: Green
Size(L*W*H):65 x 40 x 18 mm
ISM: 2.4 GHz
PA: 25 dBm
Relay voltage: 220 V
Relay Current: 10 A
Input voltage: DC 7 V~30 V
Input overvoltage protection: Yes
Input overcurrent protection: Yes
 
Features:
1.More safe with relays PCB pin anti-climb design.
2.With ESP8266 Wifi module,4-layers board design.
3.One output status indicator, one input status indicator.
4.220V 10A relay, one normally open, one normally closed.
5.One way optocoupler isolation input, TVS input protection.
6.Access control server via TCP CLIENT mode Via HTTP protocol control.High-current terminals.
7.Input overvoltage protection, input with TVS, when voltage exceeds 33V, automatic protection will operate.

The Specs:
1. Support for the Arduino IDE 1.0 (OSX/Windows/Linux).
2. Power via USB or External Source or 7-16 v to 5 v (automatic selection).
3. The On - board, 150 ma 5 v Regulator.
4. Built - in USB and serial was debugging).
5. 6 I/O Pins (2 are informs the for USB only if your program actively communicates over USB, otherwise you can use all 6 even if you are programming via USB).
6. 8 k Flash Memory (about 6 k after bootloader).
7. The I2C and SPI (vis USI).
8. PWM on 3 pins (more possible with Software PWM).
9. The ADC on 4 pins.
10. The Power LED and the Test/Status leds.