The D1 Mini is a development board based on the ESP8266 SoC. It has WiFi capability, which makes it perfect for small wireless sensor devices.
Specification
- WiFi 802.11 b/g/n support
- 11 digital input/output pins
- 1 analog input pin (max. 3.2V)
- Flash memory: 4 MB
- Price: from $2.85 USD
More information
- WEMOS D1 Mini: https://www.wemos.cc/product/d1-mini.html
- ESP8266: https://espressif.com/en/products/hardware/esp8266ex/overview