However, the community quickly realized that the ESP8266 was far more powerful than a simple peripheral. It contained a 32-bit Tensilica L106 processor running at 80 MHz (overclockable to 160 MHz) and ample GPIO pins. The ESP-01 was one of the first breakout boards to bring this chip to the masses.
Safe because internal pull-ups exist.
Inadequate power.
This guide covers hardware, pinouts, programming, power, and common pitfalls.
and its successor, the , are compact Wi-Fi modules based on the chip. While they look nearly identical, the
