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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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