 | | RCX motor voltage —Wes Matchett
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| | | I've completed a syncro drive model to be RCX controlled and have encountered an unexpected barrier. The model's drivetrain was tested using a battery box (6 AAs) and works fine. But when I try to drive it with the RCX it doesn't have enough power (...) (25 years ago, 5-Nov-99, to lugnet.robotics.rcx)
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| | | | | Re: RCX motor voltage —Terry King
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| | | | | WEs, I'm unclear about your problem. Are you using the MIndstorms type motors?? Others? What current do your motors draw, at what voltage? (25 years ago, 7-Nov-99, to lugnet.robotics.rcx)
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| | | | | Re: RCX motor voltage —Mario Ferrari
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| | | | (...) encountered an (...) (6 (...) have (...) them (...) did. (...) Yes, using a direct connection to a battery box your motors get more power. I don't know if this idea is applicable to your model, but you could use one motor attached to the RCX (...) (25 years ago, 8-Nov-99, to lugnet.robotics.rcx)
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| | | | | | Re: RCX motor voltage —Wes Matchett
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| | | | (...) These solutions bring up problems of their own: using a motor to operate a switch (battery box or Lego switch) requires monitoring the switch state to determine on/off status. Also, there will be a time delay while the motor moves from one (...) (25 years ago, 8-Nov-99, to lugnet.robotics.rcx)
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| | | | | | Re: RCX motor voltage —Chris Phillips
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| | | | | (...) I can think of two other possibilities: The best approach is probably to add more gears so that the motors don't have to work as hard to move the platform. The platform will move more slowly, but at least it will move at all. (Hmm... That (...) (25 years ago, 8-Nov-99, to lugnet.robotics.rcx)
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| | | | | | Re: RCX motor voltage —Terry King
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| | | | Wes, relays would work pretty well. (Still, how much current do your motors draw???) The LEGO motors draw about .35 Amps (350 Milliamperes) You could connect two 5V coil relays , each with a diode in series with the coil, connected oppositely to (...) (25 years ago, 9-Nov-99, to lugnet.robotics.rcx)
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| | | | | | Re: RCX motor voltage —Wes Matchett
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| | | | (...) I am using the motors that came with the RCX. (...) Hmmm - do you propose to ensure the delay in the relay circuit or programmatically? If in the circuit, how? (...) (25 years ago, 9-Nov-99, to lugnet.robotics.rcx)
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| | | | | | Re: RCX motor voltage —Terry King
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| | | | The simple thing would be to do the short delay in the software. Identical relays usually 'make' faster than they 'break' due to energy stored in the magnetic circuit. It's hard to do this without active components. If you use a typical small (...) (25 years ago, 9-Nov-99, to lugnet.robotics.rcx)
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| | | | | | Re: RCX motor voltage —Wes Matchett
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| | | | (...) That sounds like a good approach. (...) As I stated before - I'm using the motors that came with the RCX. -Wes (25 years ago, 9-Nov-99, to lugnet.robotics.rcx)
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| | | | | | Re: RCX motor voltage —Terry King
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| | | | Wes, I'm sorry; I missed the Rcx Motor info... If the Rcx Motors start/run with 6V but don't work with the Rcx Outputs, something is 'Funny'. The Rcx, with decent batteries, puts out about 7 volts to a running Rcx motor (full power setting). I'm not (...) (25 years ago, 10-Nov-99, to lugnet.robotics.rcx)
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