Built because it
needed to exist.
CYGM was born from a simple frustration: why does seeing your glucose data have to be expensive? Commercial CGM displays cost hundreds of dollars, require subscriptions, and lock you into ecosystems.
I'm Carl — a self-taught developer, a member of the diabetes community, and someone who believes technology should serve people, not profit margins. I started with a $20 ESP32 development board, a 2.8-inch touchscreen, and a lot of late nights learning embedded programming through trial and error.
CYGM is fully open source. No subscriptions, no accounts, no cloud dependency. Just a small device that does one thing really well — putting your glucose reading where you can see it. Every line of code, every schematic, every 3D-print file will be available for the community to use, improve, and share.