0-10v To 0-20v Converter
Hello,I am using an Arduino Uno along with a datalogger shield. The device that I have to connect it to has two outputs: +10V and -10V and I guess the difference in that is what I need to record.At first I was told that it was only going to be a single output of 0-10V so I made a simple voltage divider to get a single-ended output of 0 to 5V so that the ADC could read those values safely. But now that I know that that's not the case, I'm a little confused as to how to move forward with this.Please advise on how I can tackle this situation. I know the arduino doesn't deal with negative voltages. My knowledge is very limited electronically/electrically so I'd appreciate any help I can get! Still not sure what the device's specifications are.If the outputs are isolated (floating), then the -out could be connected to Arduino GND.
0-10v To 0-5v Converter
Then the +out would become 0-20V. So as in polymorph has suggested, could connect the +out to a 4:1 divider. The divider out would then be 0-5V.If the device has a GND (0V) and the outputs are not isolated, then the -out would have 0V to -10V range and the +out would have 0V to +10V range. Difference being -10V to +10V max.More information needed on the mystery device.