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Hi,

I wonder if there is a thing such as a "12 volt shield" which converts all outputs/inputs of Arduino Mega to 12 volts? I need to connect several 12 volt sensors to an Arduino Mega. 12 volt output (low current) is also needed. I would preffer to buy a readymade shield.
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have you checked - http://shieldlist.org/ - many shields there smiley
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Rob Tillaart

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I checked http://shieldlist.org/ and also Googled for a 12 volt shield. I haven't found a good match.
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for (digital) input you could make simple voltage dividers  - http://www.bowdenshobbycircuits.info/r2.htm

for output you can use a relay shield? or is that too slow? - http://shieldlist.org/seeedstudio/relay

maybe this helps more smiley
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Rob Tillaart

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I know of no such ready built shield for this sort of thing. I doubt if you will find one, it is rather an odd request.
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Thanks. The relay shield only has four outputs. 

This shield does not adress the input problem. A resistor on the input pins would probably do (optocouplers would be better), but as I mentioned, I would like to purchase a readymade board which plugs into the Arduino Mega.

It would be perfect if there was a board which converted all Arduino Mega pins to 10, 12 or 24 volts (depending on the voltage of the external source).





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Thinking out loud,

Cars use 12Volt for all kind of things, and they sometimes use the CAN-bus  (Car Area Network). So an Arduino shield with CANbus and some CAR-electronics?

- http://shieldlist.org/sparkfun/can-bus 
- http://www.squarell.com/Products/Components/component/27
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Rob Tillaart

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some recent canbus activity...
- http://arduino.cc/forum/index.php/topic,52052.0.html
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Rob Tillaart

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Thanks,

Decided to build my own board using voltage dividers at the input and transistors for the output. 12/24 volt output/input is quite common, so eventually somebody will manufacture a board...

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