I2C power on Roboard RB-110

Based on DMP's Vortex processor / SoC this board is a full computer capable of running a standard Windows and Linux installation on the backpack of your robot.
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I2C power on Roboard RB-110

Post by 317070 » Fri Jul 12, 2013 12:52 pm

Post by 317070
Fri Jul 12, 2013 12:52 pm

I'm developing a IR-tracker extension board for the Roboard RB-110, and I couldn't find the power properties of the I2C-port. There are 2 powerlines, 3.3V and 5V, but how much power can they safely deliver (to power IR-leds)? Any way I can find out without burning a board?
I'm developing a IR-tracker extension board for the Roboard RB-110, and I couldn't find the power properties of the I2C-port. There are 2 powerlines, 3.3V and 5V, but how much power can they safely deliver (to power IR-leds)? Any way I can find out without burning a board?
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Post by PaulL » Sat Jul 13, 2013 8:08 am

Post by PaulL
Sat Jul 13, 2013 8:08 am

The 5v supply powers USB as well, so as long as the traces where you pick it off can hold it, 500 mA from 5v? I think 5v supply, 100 mA or less, is probably safe. I have no idea how much reserve is available on 3.3v...
The 5v supply powers USB as well, so as long as the traces where you pick it off can hold it, 500 mA from 5v? I think 5v supply, 100 mA or less, is probably safe. I have no idea how much reserve is available on 3.3v...
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