I designed a simple 1-stage charge controller circuit schematic and PCB. This was then manufactured in China using JLC PCB and then the circuit soldered and tested by myself. The circuit uses a relay to disconnect the solar panel from the circuit, when the battery voltage reaches a set voltage level. The voltage level is set by the potentiometer, using resistance to increase the trigger point of the relay.

This project involved the following skills and techniques;

• Multisim Simulation Software
• KiCad Software
• Circuit Analysis
• Soldering