4WD robot rebuild

thingiverse

Few months ago my path crossed with this 4WD robot from Keyestudio ( there are literally tons of clones available on internet) I am not satisfied with look of this funny thing an there is also some features missing so I decided to give him a little ( rather big) rebuild. So this is work in progress. TLDR: 1. Rear bumper / cover - done. 2. Holder for 10000mAh powerbank - done. Next step : Front bumper with integrated ultrasonic sensors. - in progress Last step: power motors directly with step-up converter/booster for better performance. Last last :-) step: wireless charging with auto-homing. ------------------------------------------------------------ Step 1 rear bumper: there is no need for explanation - pretty simple design and printing. Step 2 powerbank bracket: it is not some beautiful piece but for prototyping sufficient. For simplicity reason and convenient charging I decided to use some common noname powerbank that is used to charging 5V appliances. There was some hick-ups on the way so be carefull. Motor driver used in this particular robot (L298N) is not, what you call, efficient so there is big voltage drop-out on output. With 5V power you can expect 3.3V on motor. So one of future todos - powering motor through step-up converter may be up to (9V used motors should take 6V input)