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Motor Mind B. Help me to make it work. — Parallax Forums

Motor Mind B. Help me to make it work.

Willsworld.orgWillsworld.org Posts: 23
edited 2007-08-18 03:01 in BASIC Stamp
Just entered the world of Basic Stamps.· Purchased the BS2, BOE Rev C, 2 Motor Mind B, 2 12v 7.5a batteries and 2 24v motors.· I want the Stamp to control the motors speed and direction, but since I'm new to this, I need some help setting everything up.· I am building a self replicating robotic colonization system to explore and colonize outer space, but I'm stuck at the beginning.· Any assistance would be apprieciated.

Comments

  • Mike GreenMike Green Posts: 23,101
    edited 2007-08-18 01:48
    Have you done your homework yet?

    The Solutions Cubed website has all kinds of information on using the Motor Mind B with Stamps. Have a look, download their examples and application notes.
  • Willsworld.orgWillsworld.org Posts: 23
    edited 2007-08-18 02:41
    Done all the homework, I think.· Copied the sample code from Parallax and the Motor Mind Website, ran the code, the red led blinked on the BOE, but the motor did not turn.· I believe it is because of the wiring.· Below is a listing of how its wired, based on the web-BSM-v2.2.pdf manual.·

    MMB pin 1 to VDD on the BOE.· (x3 vdd)
    MMB pin 2 to 24v battery - connector.· (duh, this might be it)
    MMB pin 3 to Pin 15 of BS2.· (x2 p15)
    MMB pin 4 to Pin 14 of BS2.· (x2 p14)
    MMB pin 7 to - side of motor.
    MMB pin 8 to + side of motor.
    MMB pin 9 to + side of 24v battery.

    The 24v battery source is 2-12v batteries in series.

    (descriptors in () are the BOE pins)

    ·
  • Mike GreenMike Green Posts: 23,101
    edited 2007-08-18 02:50
    Pin 2 is the common ground. The ground (-) terminal of the motor battery and the ground (-) terminal of the BoE have to connect at this point. Do not connect the motor battery at the BoE, connect it here. If you don't connect this point to the BoE board ground, it's just as if the BoE isn't there.
  • Willsworld.orgWillsworld.org Posts: 23
    edited 2007-08-18 02:57
    Based on my last reply, I also have to connect a jumper from MMB Pin 2 to the VSS on the BOE (x3 Vss).· Is that correct?
  • Willsworld.orgWillsworld.org Posts: 23
    edited 2007-08-18 03:01
    Thank you, Thank you, Thank you......· it is finally working.· Could you check out my web site and let me know if I could put you as a contributor?
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