The ESP-01 (ESP-8266) is a compact, low-cost Wi-Fi module with up to 1 MiB flash memory, operating at 3.3V and featuring a full TCP/IP stack. It supports power-saving modes, making it ideal for IoT and battery-powered applications, and is programmable via the Arduino IDE for easy integration. Its versatility in adding Wi-Fi to projects or operating standalone has made it a staple in the maker community, suitable for a range of projects from smart home devices to educational prototypes.
| Nr. | Pin | Funktion |
|---|---|---|
| 1 | GND | Masse/Ground |
| 2 | GPIO2 | GPIO (mit internem Pullup-Widerstand) |
| 3 | GPIO0 | GPIO (mit internem Pullup-Widerstand) |
| 4 | RXD | UART0 (Dateneingang) |
| 5 | VCC | Spannungsversorgung mit 3,3V (VDD) |
| 6 | RST | Reset-Pin (active LOW) |
| 7 | CH_PD | CHIP ENABLE (active HIGH) |
| 8 | TXD | UART0 (Datenausgang) |