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The Wemos D1 mini PRO is an improved version of the popular ESP8266 development plateforme that can be programmed with Arduino IDE, NodeMCU (lua script) for ESP8266. Notice that MicroPython is not supported by Wemos.cc for this plateform!
This is the lastest version of D1 Mini PRO (v2.0.0) offering the latests features:
The Key advantage of the Wemos Plateform is to offers a lot of shield and add-ons and it also support the famous NeoPixel (smart RGB Led) for create smart display and animation.
The plateforme offers 11 digital I/O and 1 analog output. The Wemos is the only plateform supporting a 3.3V input voltage the analog input (thank to the voltage resistor divider placed on the 1V max analog input of the ESP8266).
This ESP8266 plateform brings 16 Mbytes Flash and a brand new CP2104 USB to serial converter (as used by many manufacturer on their product). As the USB-to-Serial converter handles the DTR and RTS signal, there is no need for extra button to handle the bootloading activation on GPIO0 :-)
The power supply 5v to 3.3v is handled by the RT9013 ultra-low drop out regulator and low noise offering an output current of 500mA max which leave a room of ~200 to 250mA for your own project as the ESP8266 use from 40mA-80mA to 250mA while communicating over the WiFi.
This product is only made available for learning and discovery purpose.
The Wemos D1 Mini PRO + normal header set + femalle header set + stacking header set.
|TX||Serial data, Emitter pin TXD||TXD|
|RX||Serial data, Receiver pin RXD||RXD|
|A0||Analog input, max 3.3V (via voltage divider)||A0|
|5||IO, SCL - I2C bus clock signal||GPIO5|
|4||IO, SDA - I2C bus data signal||GPIO4|
|0||IO, 10k pull up-resistor||GPIO0|
|2||IO, 10k pull up-resistor,
BUILTIN_LED (set LOW to light).
|14||IO, SPI SCK||GPIO14|
|12||IO, SPI MISO||GPIO12|
|13||IO, SPI MOSI||GPIO13|
|15||IO, 10k pull up-resistor, SPI SS||GPIO15|
|5V||5V power, wired to the 3.3V regultator||(aucun)|
|3V3||3.3V regulator output||3.3V|
|RST||Reset. Set to LOW to reset.||RST|