Gustavo Reynaga shows us how to you can flash your ESP-01 and esp-201 with Arduino IDE and upload any other firmware with ESP flash tools.
Hi folks, now I’ll teach you how to make your programmer to the ESP-01 and ESP-201, (perhaps serve with other models) using an Arduino UNO, a few cables and optionally a button and a slide switch, in my case I use them because I had available, with this programmer able to upload the Arduino sketches and any other firmware (AT, LUA, Espruino, etc).
The cheapest ESP8266 programmer! – [Link]
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