If you have a stock ESP-01 that you're not using because you're tired of shorting the pins to program it, then try again if your sketch doesn't work, this module is for you ! It couldn't be easier. You connect the ESP01 to the module and upload your sketch. There is no reset button. No unplugging and plugging in the USB cable again. I even used it to reprogram an ESP01 controlling a dual relay module.
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