This armband continuously monitors body temperature while you sleep. You can monitor temperature hands-free from another device, even if you're in a different room.
You can monitor temperature for up to 8 hours on a full charge (tested on a 3.3V 400mAh lipoly battery, data sent to Adafruit IO once every minute). Data is sent to your Adafruit IO account for long-term storage and visualization. Use Adafruit IO Triggers to be notified by email when the temperature increases past a set threshold.
Bluetooth Low Energy (BLE) Temperature Armband
Monitor your (or someone else's) temperature, hands-free, from anywhere with the Adafruit Feather nRF52840.
Temperature readings are sent from the Feather nRF52840's Bluetooth-Low-Energy (BLE) radio to the Adafruit BLE Connect App.
Adafruit IO is the easiest way to stream, log, and interact with your data. This project uses Adafruit IO to log and display temperature data on an interactive dashboard. You can check the current thermometer reading and monitor the temperature over time.
Fever Email Alerts
If a temperature threshold is reached, your armband sends an email to your phone.
Hands-Free and Rechargeable
We've designed this wearable armband to hold a rechargeable 3.7V 400mAh lipo battery. The Feather NRF52840 has an on-board lipo charger - plug it into micro-USB to charge between uses.
We won't share your account information with anyone without your permission and everything you store on Adafruit IO is private by default, whether you're a paying customer or not.
We believe Internet of Things devices should come with a well established expectation of what they will and will not do with consumer’s data.
- Read our Internet of Things Bill of Rights
- This project is not a medical device.
- This project is not waterproof or water-resistant
- This project is not designed for use with children.
The parts below were used in this project. You don't have to use the exact same parts but the enclosure was designed to specially fit these parts - so if you want to use different components, you can but just know it may not fit in the provided enclosure. You can of course tweak the CAD files.
Having the right tools makes this build easier and more fun. Most of these are available in the shop but use whatever tools you have on hand.
- 3D Printer and Filament (or a 3D Printing Service)
Wires, screws, magnets, filament - The supplies listed below are both helpful and necessary for completing this project.