If you do not have an ESP-01, and another module and the GPIO15 is displayed on it, then you will also need to connect GPIO15 to the ground. To check the ESP8266 ESP-01, it is enough to connect three pins: VCC and CH_PD (CHIP Enable) to power 3.3 volts, and GND to the ground. The supply of high supply voltage to the module is guaranteed to leave the ESP8266 output. ![]() To check the ESP8266, which you just purchased will need.Īttention! The permissible power supply range of the ESP8266 module from 3.0 to 3.6 volts.
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