Some adapters can be switched between 3.3V and 5V for the data pins, but still provide 5V on the power pin which will irreparably destroy your device. NodeMCU You can also use a NodeMCU (or similar) as a reliable serial programmer if you disable the onboard ESP by bridging GND to the RST or EN pin, and connect TX and RX straight to another ESP82xx instead of crossed.CP2102 or PL2303 - works with certain devices, but using an external 3.3V supply might be necessary.RECOMMENDED VoltLink - USB to serial adapter board based on the popular CP2102N chip with built-in ESP auto-reset circuitry and a 500mA voltage regulator.
RECOMMENDED CH340G is the most reliable and the cheapest one to boot ( CH340G, Sparkfun, Soldered Connect, CH340N with AMS1117).
You must ensure that the device receives sufficient power (current AND appropriate voltage level) to properly flash the firmware on the device. The power supplied to the device is one of the most important elements for both flashing the device and for stable operation. Getting Started Prerequisites ~ Needed Hardware ~Įvery Espressif ESP8266, ESP8285, ESP32, ESP32-S or ESP32-C3 chipset based device can be flashed with Tasmota.
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