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 Robotics / RCX / 1816
1815  |  1817
Subject: 
monitor and control external voltage
Newsgroups: 
lugnet.robotics.rcx
Date: 
Fri, 11 Oct 2002 19:42:52 GMT
Viewed: 
2826 times
  
Could you build a voltage controlled switch out of the RCX?  Do this:
Monitor a voltage, when the monitored voltage does something, switch a motor
output.

1) What would you have to do to monitor a voltage (safely)?  Connect an
input sensor to your source with a resistor in series.  What size resistor?

2) How do you safely electronically switch the external circuit?  A motor
output plus a mosfet?  Motor output and some optically coupled device?

I would like to monitor the charging of a battery pack and stop the process
when the voltage declines.

If you have any resources for 1 and 2, please point me there.

Thanks,
Bill



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