ESP8266 ESP01 ESP-01S USB Serial Programmer Module Adapter Board UART

It is conveniently fitted with a 2x4P 2.54mm female header the module is based on the USB-UART Bridge CH340 from WCH which is compatible with all platforms. You'll need to jumper GPIO 0 to GND when you plug into to your host to put the Board in programming mode (Remove jumper after you get the LED blue flash confirming programming mode has been enabled.).

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