This computer will run forever

The PIJuice HAT on top of a Raspberry Zero.
The PiJuice Hat on top of a Raspberry Zero. The Solar panel is connected to the PiJuice via micro-USB. A USB Webcam is connected to the Raspberry. The Blue led indicates the LIPO is charging. The enclosure is a simple electricity junction box.
The operational system. On the left, the solar panel. On top of the enclosure, the USB Webcam, with a state of the art waterproof protection.
The web cam emerging from the snow
PI gallery provides a web interface to pictures stored in the web server
Blynk application on smartphone
  • A python application running on the PI.
  • A smartphone application, build without any code, just by assembling widgets.
  • A public or private Blynk server, which managed asynchronous communication between the python app and the smartphone app.
  • sends a time stamp every time it runs. N means is it ‘night’, and no picture is taken.
  • sends the LIPO SOC (state of charge, in %) and voltage. PiJuice library provides those values. On the blue graph, one can see the moment the sun hits the solar panel and the LIPO starts re-charging (a fully charged LIPO is 4.2V, a fully depleted one is ~3.1 V).
  • increments a counter at each boot to make sure the system is working properly.
  • configures the time interval between consecutive boot — here 59 minutes.
Screenshot of PushOver on a smartphone
see the little tip on the table’s left

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Get the Medium app

A button that says 'Download on the App Store', and if clicked it will lead you to the iOS App store
A button that says 'Get it on, Google Play', and if clicked it will lead you to the Google Play store
pascal boudalier

pascal boudalier

Tinkering with Raspberry PI, ESP32, Solar, LifePo4, mppt, IoT, Zwave, energy harvesting, Python, MicroPython, Keras, Tensorflow, tflite, TPU. Ex Intel and HP