The box of electronic parts that was given to me had a awesome surprise. A XR-2206 function generator chip. I’ve been needing a function generator for a while now and so now I get to build one. Back when I was trying to build one I kept finding schematics for the XR-2206 but they’re hard to find unless you want to buy one from eBay. Now I need to find that schematic I had found that lets me do all four types of waves Sine, Triangle, Sawtooth and Square.