Flora - noise when running on battery, not on USB

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Tunderslimer
 
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Joined: Wed Nov 18, 2015 10:51 pm

Flora - noise when running on battery, not on USB

Post by Tunderslimer »

Hello all, first post!

I've got a Flora running connected to a 16 Neopixel ring. It runs my sketches perfectly when connected to my computer with USB. When running on battery, however, I get random flickery noise.

The Flora is externally powered by a UBEC running at 5 volts. Actual voltages are 5.35 at battery connector and 5.15 at VBATT and GND.

I guess I'm curious as to what the operational difference between USB power and a UBEC would be?

Thanks in advance,
Chris

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