Soldering thin wire to chip pads gives more GPIOs. Now esp8266 can operate with GPIO0, GPIO2, GPIO4 (pin 16) and GPIO5 (pin 24). It can also read 0-1V level via ADC (pin 6 – TOUT). Next will be using GPIO12,13,14,15 (pins 10, 12, 9, 13).
Soldering thin wire to chip pads gives more GPIOs. Now esp8266 can operate with GPIO0, GPIO2, GPIO4 (pin 16) and GPIO5 (pin 24). It can also read 0-1V level via ADC (pin 6 – TOUT). Next will be using GPIO12,13,14,15 (pins 10, 12, 9, 13).