Thank you for your reply. Yes, I did stumble upon the bin2code.py script you mention. The issue is that it doesn't convert the image to raw pixel data (usable by M5EPD_Driver::WriteFullGram4bpp).

After a bit more research, I found a preliminary command using ImageMagik to convert an image to raw pixel data for the M5EPD: convert input.png -depth 4 -negate output.gray

Then convert the raw data to C with bin2code.py : ./bin2code.py output.gray

The result can then be appended to ImageResource.h

Hi,

I've forked the Factory Test and I'm trying to add new image resources. What source image format and tool (Linux compatible) should I use to generate C arrays like in ImageResource.h?

Thanks

I used an antenna analyzer and this is what I got:

There are 3 spikes around the following frequencies:

• 610 MHz
• 820 MHz
• 2300 MHz

Hi,

Does anyone know what is the resonating frequency of the internal PCB antenna of the LoRaWan module?

Thanks.