When working with MySat training satellites, you may have noticed the lack of a useful effect from the solar panels. When working indoors, even in bright artificial light, the panels do not charge the battery, do not supply current to the MH CD-42 power controller, etc.
This operating condition is normal and does not indicate a malfunction.
Why doesn’t the MySat educational satellite run on solar panels?
The solar energy flux density in Earth’s orbit is much higher than on its surface, due to the absence of losses in the atmosphere. Real space satellites are able to obtain much more power per unit area of solar panels than is possible in ground-based tests.

At the same time, the radiation from artificial light sources is much lower than solar radiation, including on a winter or gloomy day (even if it visually seems otherwise). The maximum electric current that the panels can give even under bright lamps is insufficient for the correct operation of the electronic modules of the kit.

MySat has just two solar panels, with a total area of 128 cm². This is not much – real cubesats usually have more (due to covering more faces with panels, or implementing complex systems for deploying folded panels).

The solar panels included in the kit are actually capable of powering MySat – in limited mode.
This is possible in the summer, on a clear day, under direct sunlight.
To conduct the tests:

1. Terminate the WiFi connection by disabling the use of the WiFi channel by sending the appropriate command (“SetWifi” → “No”). 
   WiFi communication is one of the most energy-intensive processes in MySat.
2. Place MySat in direct sunlight. Position the satellite so that the sun’s rays hit the solar panels at a right angle.
3. Observe changes in solar panel current by polling the INA3221 module, MySat voltmeter-ammeter.