Fixing the WaveShare Jetbot (slowing down)
The Problem
The problem with a stock standard Waveshare Jetbot kit is that the motors are design to operate at 5-6V but the kit supplies 12V.
This makes the kit operate erratically, violently jerking the robot every time a motor is powered up.
This makes for jerky movements and means the AI has a hard time controlling the robot and keeping pace with the motor's movements. This frustrates line following for example.
The Solution
The solution is to solder a 5V (or 6V) DC-DC converter between the 12V line and the VM1, VM2 and VM3 pins on the TB6612FNG motor driver IC.
How I did this to my broad is shown below:
A full discussion about this approach is found at:
https://github.com/NVIDIA-AI-IOT/jetbot/discussions/377Here is an example of it operating without modification:
Here is an example of it operating with the 5V modification:
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