1 - How do I get my Beagle Board to control the 4 DC motors in order
to make them turn?
So far I think I have to use the I2C pins but I'm not sure about that.
And if I can control the DC motors through a Beagle Board...
2 - Will the Beagle Board have enough power to handle the peripherals
and control the DC motors as well?
3 - The Beagle Board came with no pin headers, will I need them to
connect to the DC motors?
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http://www.hervanta.com/stuff/Beaglebot
This is the controller I use for my two motor robot.
http://www.roboticsconnection.com/c-5-robot-controllers.aspx
You need to know the running current and stall current of your
motors as well
as the voltage to plan your motor controller. The BB runs on regulated
5vDC
so you will need to plan for that.
Sounds like a great project..
Don Lewis
robotics.djlewis.us
-----------------------------------
Will something like this work?
http://mechomaniac.com/ArduinoMotorControlWithTheArdumotoShield
http://mechomaniac.com/ConnectingServosToTheArdumoto
> > beagleboard...@googlegroups.com<beagleboard%2Bunsu...@googlegroups.com>
The motors for the chassis have the following specs:
• 4WD Mobile platform Motors: 3-12V DC
• Speed: 90cm/s
Motor Specifications
Green Motor
• Gear Ratio 1:120
• No-load speed(3V):100RPM
• No-load speed(6V):200RPM
• No-load current(3V):60mA
• No-load current(6V):71mA
• Stall current(3V):260mA
• Stall current(6V):470mA
• Torgue (3V): 1.2Kgcm
• Torque (6V): 1.92Kgcm
• Size: 55mm x 48.3mm x 23mm
• Weight:45g
Yellow Motor:
• Motor Model: 130 Motor
• Output Mode: Two-way shaft output
• Gear ratio: 1:120
• No-load speed (3V): 90RPM
• No-load speed (6V): 180RPM
• No load current (3V): 120mA
• No load current (6V): 160mA
• Locked-rotor current (3V): 1.5A
• Locked-rotor current (6V): 2.8A
I consider myself a beginner robot enthusiast and don't know how
complicated it would be to do this now that this issue has come up.
Could you suggest what parts I should buy to get this done (using BB
to control chassis)?
Thanks
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I would strongly agree with this. You'll find that Sparkfun[1] has a variety of
excellent motor controller boards. This will save you a lot of time and will be
another layer of isolation between the high-draw/high-voltage motors and your
sensitive BeagleBoard.
- Ben
I have seen a setup that controlled a few dc-motors in a camera platform. And it
worked.
You may consider it a hobbyist toy which it is. But you get quick and working
things out of it.
Cheers,
Matti
On 28.3.2010 2:01, Ian wrote:
> So I cannot control the DC motors by just connecting a wire from the
> Beagle Board to them, I have to have a motor controller circuit?
>
> Will something like this work?
>
> http://mechomaniac.com/ArduinoMotorControlWithTheArdumotoShield
>
> http://mechomaniac.com/ConnectingServosToTheArdumoto
>
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Phone: +358 44 251 1191
I consider myself a newbie and would like to stay away from building a
circuit, buying one is my best option since I have a time constraint.
I've done a little research and found this Motor Shield (http://
www.ladyada.net/make/mshield/)
I think this is all I should need??
I'm thinking of interfacing this motor shield to the 4 DC motors, and
interface the motor shield to the Beagle Board. Is this the right
process to get what I want done (BB controlling 4 DC motors for
navigation)?
- Ian
Don
------------
Hi Ian,
Ans 1. H-Bridge, H- bridge takes PWM input and controls DC motor. So
Beagle GPIO -> Signal amplifier -> H-Bridge. I had used National
semiconductor 's H-bridge.
2. You will need separate power 9V/12 V with .5 to 3 A for motor & H-bridge.
3. Schematics of beagle will help you to locate GPIO.
(I am not sure, but omap3530 might have PWM output to on some pin.)
Regards, Viral
Here is where I'm at right now:
1 - Build an H-bridge to control the DC motors
2 - Get a 9V/12V battery to power the DC motors
3 - Use the Beagle Board's I2C for PWM for the H-bridge
Will this work? Will it take care of the fact that the Beagle Board
only has 1.8V?
- Ian
Here is where I'm at right now:
1 - Build an H-bridge to control the DC motors
2 - Get a 9V/12V battery to power the DC motors
3 - Use the Beagle Board's I2C for PWM for the H-bridge
Will this work? Will it take care of the fact that the Beagle Board
only has 1.8V?
- Ian
On Apr 1, 3:57 am, Viral Sachde <vi...@allaboutif.com> wrote:
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I think,
- Use GPIO as makeshift PWM instant of I2C
- H-Bridge should take care of reverse stuff.
- 7.2 might not be enough. Long back, i guess in 2003, I had used old
2 - wheeler battery which use to provide 12 V to high power DC motor
which could with stand even 1kg+ weight. But that will require proper
physical body, where battery, circuit and wheels can be mounted.
Regards, Viral
This sounds like the easiest and cheapest choice?
Jpiat, so you're saying that even if I use an H-bridge or Relays to
drive the motors, I'll still need to translate the voltage and the
only way to get around this is to use an Arduino board.
If I use an Arduino board, how would I get it to talk to the BB?
- Ian
Level Converter (1.8v to 5v)
http://www.sparkfun.com/commerce/product_info.php?products_id=8745
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Laurent
-----Message d'origine-----
De : beagl...@googlegroups.com [mailto:beagl...@googlegroups.com] De la part de Ian
Envoyé : samedi 10 avril 2010 01:12
À : Beagle Board
Objet : [beagleboard] Re: Beagle Board Robot (DC Motor power, Wireless, etc)