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#1
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Re: Average Current Draw
Daniel,
Are you asking about all electronics? I would guess that the Crio, Radio, camera, DSC, and several no load speed controllers will likely draw as much as 20 amps peak but typically much less. A typical ham power supply ought to do the trick. If you add the compressor or some motors, most power supplies will trip off on current overload. |
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#2
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Re: Average Current Draw
I measured current for an idle control system last year at under 1 amp. Later that same season I learned that the main circuit breaker has a resistance that is very close to providing 1mV per ampere of current going through it. I briefly considered making a small circuit that would allow the main program to monitor its own current use. The team wasn't interested, so I never pursued the legality of the simple wire connections. This wouldn't prevent you from making measures of a running machine while it is not in actual competition to find out what current is being drained. I may make a symbiotic NXT robot with data-logging to ride along just for curiosity's sake alone. If I knew more about arduinos I might be trying to use one of those to do it.
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#3
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Re: Average Current Draw
We won't have anything connected to the board that will be drawing a lot of power. (motors, pneumatics, etc.), it will be just the control components.
Thanks for the posts, that helped a lot! |
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#4
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Re: Average Current Draw
How much power does a CIM draw? At what voltage? Also if you know the weight of the motor and Jag/Spike/Talon that would be helpful for me to know.
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#5
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Re: Average Current Draw
Bill,
That is the current for just a barebones Crio, right? Slartibartfest, the stall current on a CIM is 131 amps at 12 volts. |
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#6
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Re: Average Current Draw
Yes. I think there were four jags, but no motors running. No compressor and I don't think the radio was powered either. The team was just leaving the board powered while they made programming changes and I wondered how long they could expect a battery to last. We develop a control board in parallel with mechanical fabrication. The current hungry parts are in the other room for most of the early fabrications.
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#7
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Re: Average Current Draw
A couple years ago we built an electrical board that hooks to a track on the ceiling I pull side to side. We put about 8 motors on speed controlers, 2 spikes 1 for compressor (not hooked up just for code visual) one for motor and a bunch of limit switches and the crio and PD and side car and a potentiometer. I hook up one battery and this usually will last me running motors and things for a week or more.
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