This project aims to create an open source, non-invasive sleep debugger. There are a lot of sleep monitoring tools out there, but often they require you to wear wrist-bands, head gear or other stupid things. Even then most don't work well and in all the cases I've seen, they are closed and you do not get to manage your own data.
The goals of this project include:
- Use open source software to build a sleep monitoring system that is actually useful.
- Build a non-invasive system. This means that it should not alter your sleeping environment in order to gather data. No electrodes on your body, lights or other things that could influence your sleep. Afterall, sleep is supposed to get better with this device!
- Put the data collected into your hands, not some corporation that is going to sell your data.
Most of these sensors are ones I already had at home, so I used them. I really recommend the HTU21D-F temperature/humitidy sensor since it is very good, albeit expensive. The accelerometers and light sensors matter less, but I recommend digital i2c interfaces for whichever break out boards you choose.
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Triple-axis Accelerometer+Magnetometer
buy: https://www.adafruit.com/product/1120 lib: https://github.com/adafruit/Adafruit_Python_LSM303
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Adafruit HTU21D-F Temperature & Humidity Sensor Breakout Board
buy: https://www.adafruit.com/product/1899 lib: needs: https://github.com/bbx10/htu21dflib.git
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VCNL4010 Proximity/Light sensor
buy: https://www.adafruit.com/product/466 notes: I didn't like this one -- between I2C bus problems and fragility of the sensors, I've stopped using this one. See the TMT6000
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TMT6000 via attiny "ADC"
Current target audience: Geeks who love Raspberry Pis and have tools to solder wires to sensors to build their own setup. If you do not really fit this description, then please wait until this project reaches some more maturity and becomes more accessible for non-geeks.
If you're interested in helping, get a Raspberry Pi (any should work, but a 3 or Zero W are best) an accelerometer, temperature/humidity and light sensor. Wire them to your Raspberry Pi. Place the accelerometer onto your bed (I 3D printed a light plastic case for mine) so it can measure your movements as you sleep.
Next steps include:
- Writing data analysis to figure out when a user starts/stops sleeping.
- Write a morning sleep report that gives the user an idea of how they slept the night before.
- Create a more friendly sleep graphing system than Grafana. Grafana is really nice, but suited for geeks -- we'd need to do better.
I doubt this setup will collect good data if you sleep with a partner. Currently the setup is geared towards one person sleeping by themselves. If you're having trouble sleeping with a partner in bed, your first step should be to sleep by yourself!