Description
Wemos D1 mini V3 is a mini WiFi microcontroller board based on the ESP-8266EX soc. It has besides WiFi, 11 digital pins. Except for the D0 pin all pins support interrupt, PWM, I2C and the one wire protocol. 1 analog input with 3.2V max input. A micro USB connection for power and programming. Works with the Arduino IDE or with NodeMCU. It fits on a breadboard and comes with headers. There are also many different shields available to add functionality. These simply click on. The pins are directly on the ESP-8266 and have a 3.3V logic.
Wemos D1 mini V3 Links:
Arduino IDE boards
Drivers
Wemos D1 mini V3 specifications:
– Microcontroller: ESP-8266EX
– Operating Voltage: 3.3V
– Digital I/O Pins: 11
– Analog Input Pins: 1(Max input: 3.2V)
– Clock Speed: 80MHz/160MHz
– Flash: 4M bytes
– Length: 34.2mm
– Width: 25.6mm
– Weight: 10g
Wemos D1 mini V3 pinout:
| Pin | Function | ESP-8266 Pin |
| TX | TXD | TXD |
| RX | RXD | RXD |
| A0 | Analog input, max 3.3V input | A0 |
| D0 | IO | GPIO16 |
| D1 | IO, SCL | GPIO5 |
| D2 | IO, SDA | GPIO4 |
| D3 | IO, 10k Pull-up | GPIO0 |
| D4 | IO, 10k Pull-up, BUILTIN_LED | GPIO2 |
| D5 | IO, SCK | GPIO14 |
| D6 | IO, MISO | GPIO12 |
| D7 | IO, MOSI | GPIO13 |
| D8 | IO, 10k Pull-down, SS | GPIO15 |
| G | Grounds | GND |
| 5V | 5V | |
| 3V3 | 3.3V | 3.3V |
| RST | Reset | RST |
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