amage the chip. Some boards like the NodeMCU have an on-board resistive voltage divider, to get an easier 0 - 3.3V range. You could also just use a trimpot as a voltage divider.</p>
   <p>The ADC (analog to digital converter) has a resolution of 10 bits.</p>
   <h3>Communication</h3>
   <h4>Serial</h4>
   <p>The ESP8266 has two hardware UARTS (Serial ports):<br>
    UART0 on pins 1 and 3 (TX0 and RX0 resp.), and UART1 on pins 2 and 8 (TX1 and RX1 resp.), however, GPIO8 is used to connect the flash chip. Thi