@kis904

I forgot to post devlog after my previous session, so yesterday I was searching for how to build a custom DIY ESC for my BLDC (brushless dc just to write it once) motor.
That needs about 50-70A at peak and I will power it with my 4S LiPo I already have. I did find pretty cutting-edge ICs. The problem was that I didn’t know how I’ll be able to control this with my ESP32 or if I have to get an Arduino.
After about an hour of research I found SimpleFOC a library for Arduino/ESP32 that does exactly that.

Today I continued it with looking at the supported hardware section and found an older but still good enough I hope IC, DRV8305 from TI (Texas Instruments). Unfortunately it has 48 pins so it’ll take a while to make a schematic from it… It’s just so complex I don’t even understand some pins function or why I need them….
In addition I also continued to search for an appropriate BLDC that not too big to draw my battery fully in 3 mins, however still strong enough to make my car go with about 30-50km/h, that’s what I imagined that’d be good to reach.
Also saw videos on youtube that high kv vs low kv BLDC motors it turned out that doesn’t really matter so I will pair with my relatively high nominal voltage battery with a lower kv motor that doesn’t have that huge current need. Still hesitating whether I need sensored motor or sensorless.
That’s all I think. I’ll definitely continue in the upcoming days

Started designing the main frame, it’s roughly complete, but I want to polish it like rounding corners, and making it symmetric. Unfortunately I lost like 30 mins when I started making the frame, cause I stopped the record and forgot to resume it. That’s the skip at 18s on Lapse. Also wanted to check in 3D whether there’s enough space for the front tyres to rotate. Don’t know whether it’s robust enough, to endure the forces and don’t get broken. Also attached the image of a BMW E30 that I will try to build as a 1/10 scale rc car. The scale is not good yet in the sketch I just wanted to get the ratios.