@▷ Solar Panel controller by 12F675 | Diagram for Schematic

Solar Panel controller by 12F675

The purpose of this project is to realize a Solar panel controller. Initially developed for a sailing boat, the target to reach was to control the level of charge and discharge and to protect a 12 volts lead battery connected to a 32 watts solar panel.

The project is based on a 12F675 and uses HEXFETs to switch the load and the solar panel. The programs were developed with PROTON+ and around 10 of those small devices are today doing their job without any problems. The use of a PIC processor gives a large access to the way the load is used (with or without over voltage protection) or how the controller reacts when the full charge level is reached. This gives a lot of improvement possibilities.

This project has absolutely not the intention to show the best and most effective way to program. After all, I am a hobbyist too. It is a example of how to solve quickly a problem with a small and robust realization.

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