Gpio 26,Gpio 22, Gpio 21, Gpio16, Gpio17 Gpio 5 Gpio 2 could all be used, What are you trying to control with those pins? Could it be that you are drawing too much power? I tried to drive some heavy duty servo's before and the M5Stack would crash.
Hi @Thrasher, did you take a look at those libraries? you still didn't mention what it is that you want to do. There is also the framebuf library that may help, search framebuf.py on github