Module Wifi arduino
Module pin description (pinout)
Pins are arranged in two rows, having 4 on each row. Some models have pin description on the PCB, which make it simple. On the top row you can find following pins from the left to the right:
- GND (Ground from power supply)
- GPIO2 (Digital I/O programmable)
- GPIO0 (Digital I/O programmable, also used for BOOT modes)
- RX – UART Receiving channel
On the bottom (second row) you can find:
- TX – UART Transmitting channel
- CH_PD (enable/power down, must be pulled to 3.3v directly or via resistor)
- REST – reset, must be pulled to 3.3v)
- VCC -3.3v power supply