The M5 Stack is an IoT (Internet of Things) experimenter development platform. Open source developer Martin Lukasek (mlukasek) has created Nightscout follower software for this tiny device, which he describes below:
M5Stack Nightscout Monitor
"M5Stack is small development kit based on ESP32. It is in a nice plastic box, equipped with color display, micro SD card slot, 3 buttons, speaker and internal battery. It is great to monitor and display something, so I used it to monitor my daughter's glycemia. It is nice, comfortable and cheap solution.[...]
[...]In short it displays information from Nightscout site and provides visual and sound alarms if needed."
You can find the software and instructions on Github here:
https://github.com/mlukasek/M5_NightscoutMon?tab=readme-ov-file
The M5Stack device can be purchased here:
https://shop.m5stack.com/products/m5stack-core2-esp32-iot-development-kit
You may want to get one, or more extended batteries here:
https://shop.m5stack.com/products/m5go-battery-bottom2-for-core2-only?variant=37525141815468
