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homemade DVM

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jab2508

New Member
I have to build a homemade DVM using plyboard, & light bulbs to make 2 seven seg. displays separated by a decimal point. Then it has to be interfaced with a PLC so that when the leads are placed across some source, it lights up. Just don't know how to begin. Any info would be greatly appreciated!:confused:
 

Sceadwian

Banned
Sounds like an episode of McGuyver =\
 

Sceadwian

Banned
Oh I'm not making fun of him, but neither can I help. Something like this the first thing I would do is throw a micro controller at it and I don't see that on his list of materials =)
 

Andy1845c

Active Member
I don't understand the request either. DVM = Digital Voltmeter I assume?

Do you have to make your own seven segment displays with lightbulbs? I don't quite understand that part. Can you use a micro controller to make the DVM?

Does the PLC come in after the voltmeter circuit is working?
 

Hero999

Banned
I think he wants to use the A/D port on a PLC to monitor voltage and program is to control an array of light bulbs arranged as a seven segment display.
 
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