Hi all
I want to make a small balance wheel (desktop) I already have:
Arduino Mega
Adafruit Motor/Stepper/Servo Shield for Arduino v2
and I have a gyro and accelerometer
though I think I will get
Adafruit 9-DOF Absolute Orientation IMU Fusion Breakout - BNO055
to help make things simple.
What I cant get my head round is the motors to buy? I think I need brushless? do I need speed controllers or is this done on the motor shield
Thanks all
BBC_Basic:
I want to make a small balance wheel (desktop)...
What is that?
just trying to make a desk sized Segway or balance board.
board balances on two wheels aided by gyroscope
Yes, brushless is the best type of motor for this. A brushed DC motor could also work.
The speed controller is likely to be too slow and you don't really want speed control but position control. This is usually done with discrete transistors driven directly from the Arduino but there are probably 3-phase H-bridges available to do most of this in one package for you.
You need to understand servo loops to do this - a PID controller is the minimum requirement
for balancing. The most important thing mechanically is low backlash, backlash will prevent
the PID loop working fast enough to keep control. The motor also has to be powerful enough
and its gearing appropriate to the load.