THE NUMBERS IMAGE THREAD!


lego-santa-set-1127-4.jpg

Pyra's for Christmas, maybe?
 
^^ that device right there could be very handy. Most analogue industrial controls use a 4-20mA control signal. That thing takes a 0-5V signal and outputs a proportional 4-20mA signal. If you ever want to hook something like an arduino to an industrial thing, that would be the quickest way to do so.
 
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