The WeMos D1 Mini is a great way to get started with ESP8266 development. The WeMos D1 Mini is perfect for prototyping and for building IoT applications. The board is very similar to the popular NodeMCU board but with a smaller form factor. The WeMos D1 Mini is available in two variants: the D1 Mini and the D1 Mini Pro.
Flash MicroPython firmware ¶. The boards were already flashed micropython firmware. If they lost firmware or you need lastest firmware, you can flash MicroPython firmware by yourself.
DetailnĂ popis produktu. Wemos D1 Mini je Wifi vĂ˝vojová breadboard kompatibilnĂ deska, zaloĹľená na ESP8266EX. ESP8266 datasheet je k dispozici v záloĹľce "SouvisejĂcĂ soubory". Deska je kompatibilnĂ s Arduino IDE a s NodeMCU. Všechny I/O piny majĂ pĹ™erušenĂ, PWM, I2C a 1-Wire , mimo pin D0. Deska je dodávána se tĹ™emi rĹŻznĂ˝mi
WeMos Mini D1 - Default I2C & SPI pins I2C I2C can be used to connect up to 127 nodes via a bus that only requires two data wires, known as SDA and SCL. SDA => D2. SCL => D1 SPI SPI is much simpler than I2C. Master and slave are linked by three data wires, usually called MISO, (Master in, Slave out), MOSI (Master out, Slave in) and M-CLK.
0. BearWithBeard 26 Jul 2020, 10:25 @Danielo RodrĂguez. @Danielo-RodrĂguez I used D0 (GPIO16), D3 (GPIO2) and D4 (GPIO4) on my NodeMCU-based GW for status LEDs. Since the pin definitions of the NodeMCU and D1 mini are the same, this should work on the D1 mini as well. Just make sure to connect them to VCC, not GND.
According to the first Google image for "Wemos D1 pinout" it says D1 = SCL, D2 = SDA. According to your photo, Slave = 0x78 (8-bit). Arduino uses 7-bit Slave addresses i.e. 0x3C. The device controller is either SSD1306 or SH1106. Try both constructors with the u8g2 library demo.
MRKZBS.
wemos d1 mini i2c example
