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darkchick-sadchick

Light sensor to detec circadian rythm failures

This system is composed of: Hardware 1 - raspberry pi zero 2 - TSL2591 Adafruit sensor - has a range of 88000 lux

software: 1 - circuit Python running on the Pi 2 - Blinky for an mobile app

The idea of this project is pretty straight forward. Light sensor detects lux and python on the RPI counts time. this logs data every 10 min or so and sends it to a mobile app. If the light is off or on for longer than it is supposed to, it sends an "alarm" to the mobile app.

this system is currently before alpha, so proceed with care.

Documentation (links with tutorials used to put this together)

Adatfruit sensor and how to wire it to the Pi GPIO https://learn.adafruit.com/adafruit-tsl2591/python-circuitpython

Getting SSH on the RPi without having to have a monitor and keyboard (information "injected" directly on SD card before first boot) https://www.raspberrypi.org/documentation/remote-access/ssh/unix.md

Getting the RPI connected without keyboard, mouse and monitor (information injected directly on SD card) https://www.raspberrypi.org/documentation/configuration/wireless/wireless-cli.md

Install Circuit Python on the RPi https://learn.adafruit.com/circuitpython-on-raspberrypi-linux/installing-circuitpython-on-raspberry-pi

Install the library for the lux sensor https://github.com/adafruit/Adafruit_CircuitPython_TSL2591

Install the library for the DHT11 temperature/humidity sensor https://github.com/adafruit/Adafruit_CircuitPython_DHT

Once you have setup everything on the Pi, and made sure the example code from Adafruit works, we need to move to the Blynk.io side of things https://blynk.io/

This is the platform that will allow data from the Pi to be transmitted over the web and to the users mobile phone app. This is only free for up to 5 projects, but since we need something quick and easy, this will do.

Check their get-started page to start https://blynk.io/en/getting-started

installations:

Chick room in Animal unit:

  • Due to the lack of internet access in that room and most of the Animal unit, we needed to use an aditional Raspberry Pi connected to an ethernet port in an adjacent room, which then creates a WiFi access point. This access point is used by the RPi connected to the sensors to send data over the internet.
    • since we are inside the university network, we needed to connect to Eduroam. However Raspian (RPi operating system), does not play well with it using stock software. The solution was to install network manager using the steps here
    • Then we needed to turn the RPi into an access point using the steps here