The trimpot on my IOIO just spins around with no stops and none of the IOIO sample programs work to turn on the LED. I've powered the IOIO with a 9v battery and with a dedicated power supply. I can get the charge indicator on the Galaxy Tab 7 I'm using to show if I play with the trimpot, but it very sensitive and doesn't remain on. If I use a BT USB, will I still need ot adjust the trimpot?
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It is 100 ohm I believe.
I don't know whether or not it will be easy for you. Look carefully and judge for yourself... I've soldered this component several times in the past but never with the rest of the components there so I don't know.
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There's no gnd. One leg is unconnected, one on vbus, one on 5v. If you don't need current limiting you might as well just short vbus to 5v. Otherwise you better desolder the existing pot and replace it.
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The intention was to set it to almost 0 voltage (fully charging) or almost 0 current (fully choked), so that in either case you get very little power dissipation on the actual pot. Indeed, on the OTG I have beefed it up using a FET, but then again, if you're burning real power on the choke circuit you're defeating the purpose for which it was created, which is reducing power draw from the battery.
Can you move this out of this thread, preferably to ioio-dev?