Code

8. Code

8.1. ESP8266 (Arduino IDE)

The ADC cannot be used when the chip is transmitting. Otherwise the voltage may be inaccurate. (From Expressif datasheet CH 8.5) ref: http://www.esp8266.com/wiki/doku.php?id=esp8266_gpio_pin_allocations

ADC - rolling averages of at least 16 samples

8.2. Thinkspeak Dashboard

8.3. IFFT Notifications