Diferent voltage GND - Raspberry Pi Forums

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hi, connect sensor has bipolar power supply requirements +12 , -12 v. take 24v power supply , split in half. +12 24v, gnd 12v , -12 0v. output analog , 3 v if use gnd 12v. problem rp2 gnd 0v.

question how can connect grounds together?

need because signal wich analog goes adc has common ground rp2.

hi,
kind of sensor?
type of power supply used operational amplifier.
3 power lines, -v, 0 , +v.
on situations, virtual 0v or ground used (as 1/2 vcc), if not need connect node other device/circuity.

-12v, 0 , +12v power supply, or isolated dc-dc converter.
conventional power supply can easy converted dual voltage.


raspberrypi



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