I ordered 3pi couple of months ago and played with it, programmed with PID algorithm for line following and was able to tune it so that it can drive track very stable with max speed to 255. I like it alot! This weekend I took it to our local robo competition and while it was it was in top part of pack, there where about 3 faster, custom built robots. So, I’m wondering if there is anything I could do to improove speed while reusing your nice and easy to work with platform/robot, or I need to build custom one?
I had ideas along those lines:
- I tried to measure actual speed of stock 3pi going max speed (255) and it came down to aprx. 1m/s. That coresponds to aprx 600rpm with original 30mm wheels.
- I would like to get it more or less twice as fast (2m/s), so would need 1200rpm at weels
one option would be to try to go with 1:10 ratio instead of original 1:30, but keep the same motor (pololu.com/catalog/product/1099). But would it have enough torque? Have you tried similar experiments? 3pi is so small that I’m thinking it might actually work.
somwhat related to this 2 years old discussion
Extreme line following
would it be possible to run more stronger motors like this one pololu.com/catalog/product/1093? Maybe any news since discussion above? As I see from previous discussion one of concerns where that current requirement for this more powerfull motor will be too high for either motor driver or voltage regulator. If so, would there be some more or less easy way to fix this by replacing on-board comonent with some other?
- if both of above are impossible/impractical, can you suggest anything else? (what new “platform”, motors? etc)
Thanks in advance,