Heart Rate Trainer on Feather nRF52840 Bluefruit in CircuitPython

Adafruit Industries · Jan 30, 2020 · 1m

You can build a Heart Rate Trainer on Feather nRF52840 Bluefruit in CircuitPython that displays heart rate and max heart rate percentage training zones. John Park's Learn Guide coming soon. Visit the Adafruit shop online - http://www.adafruit.com ----------------------------------------- LIVE CHAT IS HERE! http://adafru.it/discord Adafruit on Instagram: https://www.instagram.com/adafruit Subscribe to Adafruit on YouTube: http://adafru.it/subscribe New tutorials on the Adafruit Learning System: http://learn.adafruit.com/ -----------------------------------------