Ian Foster

I'm still working on reverse-engineering the protocol. from what I've learned so far it seems to be command and response. I'd think that ideally the SPI library would be generic...

I think that your `IMAGE_URL` in `config.h` is incorrect. It should be a full URL to the png file, not just the domain of the screenshot tool. `config.h` example assuming...

I believe you are correct. If you want to verify that the issue is with the png url you can try using another png url from another website. I use...

If you view `https://hass-inkplate.example.com/1.png` in your browser do you get a valid png file? The error `[E][WiFiClient.cpp:320] setSocketOption(): fail on -1, errno: 9, "Bad file number"` is safe to ignore....

For what it's worth, I've always had the following in my logs, and its still always worked: ``` 21:12:42.524 > [ 4501][E][WiFiClient.cpp:313] setSocketOption(): fail on -1, errno: 9, "Bad file...

Closing this since its in the underlying library and is not the cause of an issue.

The use case I was specifically thinking of was for programming microcontrollers. Most use serial so WebSerial would work great. Some may use DFU or other methods that would require...

@echo-devnull unfortunately, webusb does not allow the use of security keys, for security measures. It would allow any site to impersonate other sites if so.

What does your battery voltage graph look like? The battery % is calculated based on the voltage, and every battery will be a little different. I calibrated this for the...

I know this may be difficult, but getting the device's serial logs while it tries to go into sleep would help. However this would need to be done while not...