Here is a small satellite sculpture based on brass tube and copper wire.
It is a "functional" micro satellite that captures every hour a photo and then sends it by wifi in FTP.
The circuit consists of an ESP32 Camera connected to a super capacitor by means of a DC-DC converter to maintain a 3.3V stability even if the capacitor voltage passes above or below 3.3V.
A voltage divider bridge checks the voltage of the super capacitor to avoid starting the ESP32 if the voltage is too low.
The super cap is charged by four 5V little solar panel.
After running the code the ESP32 goes to sleep for 15 minutes and restarts if the voltage is sufficient.
The ESP32 code then captures a photo, sends it by FTP to the website and then calls a php page to send telemetry and the website generates a GIF of the day.
The MicroSat has found its place, suspended, in my astronomy observatory.
Here is an example of a photo taken by the MicroSat camera:
Animation generated by the website of all photo taken by the MicroSat camera for the day :
Great project, I love it.
How many time did the capa give you ?