AsyncElegantOTA VS cardclock

You might also just consider using one of the libraries that are available, such as this one: https://github.com/ayushsharma82/AsyncElegantOTA This also has the benefit of async operation - so you can update your screen (if you have one), or perform operations somewhat as normal in case the upload fails for some reason.

I'm working on an ESP8266 sketch that uses ESPAsync_WiFiManager along with AsyncElegantOTA. Both are working (mostly), however, the WifiManager is apparently not saving the wifi credentials. So, after a restart, I have to go through the OTA Portal to re-enter the Wifi credentials. To troubleshoot this problem, the Wifi Manager indicates that Debug output is enabled by default but also includes an option to set the Debug Level using: // Use from 0 to 4. Higher number, more debugging messages and memory usage. #define _ESPASYNC_WIFIMGR_LOGLEVEL_ 3

AsyncElegantOTA: https://github.com/ayushsharma82/AsyncElegantOTA

The Foxie CardClock uses an ESP-12F, WS2812B-2020 LEDs, an RTC and 4 buttons + reset and a light sensor into the analog input. Might be helpful.

If it helps for reference, here's my PCB (and schematic) for my CardClock, which uses an Ai-Thinker ESP-12F esp8266 module. I don't have a USB-Serial chip on my PCB, so I program the esp8266 module via a pin header with 5v/gnd/tx/rx pins using a generic cp2102 USB-Serial adapter, from macOS, at 921600 baud. My project uses PlatformIO instead of Arduino and I highly recommend checking out PlatformIO. It's worth the small learning curve above the basic Arduino IDE.

Take a look at my schematic and PCB here: https://github.com/foxieproducts/cardclock/tree/main/pcb

Github: https://github.com/foxieproducts/cardclock/