Hacking a Video Walkie Talkie’s TXW818 MCU and Running DOOM

Recently cheapo video walkie-talkies popped up on everyone’s favorite online retailers, which naturally lured in the usual gaggle of reverse-engineering enthusiasts of cheap tat to see what’s inside these devices, as well as what more they can be made to do. Cue [Aaron Christophel] doing just that , with the typical DOOM demo as proof of concept. Inside these cheerful little devices is a TXW818 MCU, made by TaiXin Semiconductor.