Solar charge battery powered toys…

Jeff writes in with a quickie solar project…

I recently purchased two remote control cars for my nephews from a dollar store.  The cars came with three rechargeable AA batteries and also a cheap AC charger that connects to the car, but unfortunately grew hot when plugged in (a classic wall wart). So I’m giving them the cars with a solar panel and withholding the AC chargers. The best part is how easy it was to make it all work as I piggy-backed on the car’s built-in charging circuit.