This is a simple tool to reflash/upload new binary software to the ESP8266 micro-controller over-the-air.
Often it can be cumbersome to compile code with lots of dependencies just to use it. Therefore, some projects (including my WiFi-LED solution WLED) provide ready to flash binaries. You just need to compile and flash this sketch in the Arduino IDE, the only dependency is the ESP8266 Arduino Core.
Usage:
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Manually compile and upload the updater.ino sketch to your ESP board via the Arduino IDE. Wait until sketch is fully flashed.
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Disconnect your ESP8266 from power, wait a second and reconnect it. This is neccessary due to a reset issue after uploading via the IDE.
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Use a WiFi-enabled device to connect to the board's WiFi Access Point "UpdateMe". The passwort is "updater1".
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In your browser, type "192.168.4.1" in the address bar. This is the module's IP.
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You should now see a welcome screen and be able to upload your binary file.