Topic: Powering External Devices with Larger Chumby One Power Supply?
I'm working on a project that's going to add a bunch of smart RGB LED modules to the chumby one. I'm controlling them via chumby's i2c port, and it would be nice from both a convenience and an EMI standpoint to have my added connector provide not only SDA and SCL but also +5vdc and ground from the Chumby. My problem is that my peak load will be 750mA with nominal around 400mA. I'd like to use a larger power supply so the Chumby doesn't brown out if the battery is charging and music is playing etc.
From a Chumby hardware perspective, is it OK if I simply buy a 5V 2.5A power supply, splice in the connector from my current power supply since it is a pretty odd size, and use that? I'm then going to grab +5v from pin 18, and ground from pins 3, 4 or 12 of the chumbilical.
Just want to be sure there isn't some in-line fuse or power circuitry that won't like this. Thanks,
Dean