At the heart of the ESP-01 module is the ESP8266 chip with at least two boot modes — the ... To automate this process, several “Auto Reset & Flash” circuit ideas are proposed, the most popular one ...

The ESP-01 launched the ESP8266 revolution back in 2014 ... which can be annoying if everything else in the circuit is running on 5 V. To get around this, the adapter includes an SPX3819 regulator ...