MK III 12VDC 3Amp Dual Axis Solar Panel Sun Tracking Analog Controller Board DIY

Proto Breadboard. Dual or Single Axis MK III Design Features. Resetting Self-Recover Fuse for electrical short/over current protection. In my design I added thick traces for the power lines, and SMD MOSFETs with multiple via holes between the two layers for better cooling.

eBay