Lights dimming and brightening in 5V
My 2010 Blue Ridge has an issue with the 12V lights. While sitting inside RV, lights will suddenly get a lot brighter. Dimming of the lights is more subtil, seems the dimming of the light is very ...
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Removing the battery should cause it to stay in one mode. So that's a good test. If it's rhythmically going from bright to dim it's probably the converter.
It may also be that your PI is just going into another charge or desulfate mode. You should monitor the voltage to see what's it's doing. If it's switching between 14.4, 13.6 and 13.2V's, it's doing its job. When the converter drops the voltage to the next stage, the battery voltage itself slowly drops and so do the lights.
It also goes into the desulfate stage something like every 20 hours and acts kinda strange.
It may also be that your PI is just going into another charge or desulfate mode. You should monitor the voltage to see what's it's doing. If it's switching between 14.4, 13.6 and 13.2V's, it's doing its job. When the converter drops the voltage to the next stage, the battery voltage itself slowly drops and so do the lights.
It also goes into the desulfate stage something like every 20 hours and acts kinda strange.
