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Wemos D1 Mini (ESP8266, Arduino-compatible layout, wifi, 80/160Mhz, 4Mb flash)
The WeMos D1 mini is minimal ESP8266 wifi board. The D1 mini is a mini wifi board based on ESP-8266EX. more: http://www.wemos.cc
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A prototype AA battery case, it has on/off switch on the case, and it can be fully closed by cap and further screw it to close, so it’s very well protected.
Just like a relay, but spanning on 0-24V and very fast. Fast enough to use PWM actually. Useful to drive LED strips, motors, etc.
Transistor bipolaire 2N3906, PNP
With compact design, the board can integrate the real-time clock module DS1307, EEPROM memory AT24C32 and digital temperature sensor DS18B20 (not supplied on the board) which are connected via I2C bus together on a 27mm*28mm*8.4mm board.
The very popular 595 shift register chip of the 74 series is used a lot by hobbyis because of its wide availability, good speed and simplicity. Just plug it on an arduino like shown in the tutorials and youi have 8 more outputs, put two and you have 16 more outputs ! (up to a lot of them actually, with only three pins !)
This is a 90 degree angle male header, very useful for a lot of things, including to plug boards like the arduino on your protoboards.
A simple rotary encoder for all your projects. It's like a potentiometer, but without end. It sends pulse to your microcontroller to let you know in which direction it turned. This version also has a button.
LEDs & Lights
Small 1W White led providing 80 to 90 lumens.
BMP180 is a high precision , small size , ultra-low power pressure sensor can be used in mobile devices.