Quote:
Originally posted by Aonic
We need to run the robot on radio while away from the plug. I went out and bought an M-type connecter (the kind that the DC-In port on the OI uses) and soldered it to a 9 volt battery (cause the power adapter SAYS it outputs 9v)
but the problem is, that, when tested with a multimeter, it shows that the power adapter ACTUALLY outputs 12 volts.
will the OI run on 9 volts?
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The OI should run on 9 volts, however I'd be surprised if a 9v battery lasts more than about 10 minutes! You'd be much better off hooking it up to a spare robot battery (it'd be a good idea to put a fuse in the line if you do this though).
The reason the OI power supply seems to put out 12v (I actually measured ours at 14) is that it's an unregulated supply and will output a higher voltage when there's no load connected to it (credit this answer to Al S. as I just asked him the same question last week!).