The ESPboy FMradio extension module uses Si4703 chip and turning your ESPboy into portable FM radio.
- 3.3v >> VCC
- GND >> GND
- SDIO >> D2, GPIO4, SDA
- SCLK >> D1, GPIO5, SCL
- SEN >> FREE
- RST >> D8, GPIO15, CS, SS
- GPIO1 >> FREE
- GPIO2 >> FREE
NOTE: Before compilation, set Arduino IDE settings
- Board: ESP8266 WeMos D1 mini
- CPU frequency: 160Mhz