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Propeller chip using the H48C Tri-Axis Accelerometer to balance a Segway type d — Parallax Forums

Propeller chip using the H48C Tri-Axis Accelerometer to balance a Segway type d

donnpangydonnpangy Posts: 49
edited 2009-08-15 07:53 in Propeller 1
Has anyone used the H48C Tri-Axis Accelerometer to balance a device using a·2 modified servos?

Comments

  • donnpangydonnpangy Posts: 49
    edited 2009-08-13 06:05
    I am finding that the acceleromter is entirely to sensitive to small servo pops, and all I can get out of my servos is a back and forth occilation. Any ideas on a way to change the sensitivity·coming out of this accelerometer, would be apreciated ( hardware or software).
  • Mike GreenMike Green Posts: 23,101
    edited 2009-08-13 14:08
    Something like this? en.wikipedia.org/wiki/PID_controller
  • donnpangydonnpangy Posts: 49
    edited 2009-08-15 00:08
    Thanks for the tip Mike.
    ·· I realize that the oscillation from the overshooting is going to be a fun task to compensate for. I am finding that the servos that I am using are not as sensitive as I had hoped. I may need to find another gearbox and wheel assembly (x2) and a driver for it.
    ·· Any ideas where to find one?
    Thanks so much,·
  • TimmooreTimmoore Posts: 1,031
    edited 2009-08-15 01:01
    How big and heavy? I have used the mini-metal motors from pololu.com a lot for small bots, pololu also have drivers as well though I have used the L293D chip with those motors.
  • donnpangydonnpangy Posts: 49
    edited 2009-08-15 07:53
    The H48C Tri-Axis Accelerometer seems to have a static tilt component and a dynamic acceleration component. Is there a way to separate the 2 or is there a way to use the dynamic acceleration to my advantage?
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