Comments

• It's a little weird, the whine does dampen a bit when the board is moved around but I can't see any sort of pattern (pressing down sometimes helps, sometimes doesn't). Also, when the sound is more noticeable when the bluetooth radio is on so perhaps…

  in Run OpenBCI on LiPo battery Comment by Gromit August 2015
• Oh right, I expected some ripple but was a little surprised by the amplitude. I checked the regulated supplies for the ADS1299 and the analog supply AVDD looks fine, while there's still a slight ripple on the digital supply DVDD. This is probably du…

  in Run OpenBCI on LiPo battery Comment by Gromit July 2015
• I tried my hand at using that powerboost board with a LiPo battery and I do see quite a lot of ripple on the 5V output, something like 50 mV amplitude sawtooth, ~830 hz. I made a clone board recently (just the ADC) and have been powering it up usi…

  in Run OpenBCI on LiPo battery Comment by Gromit July 2015
• Thanks for the reply @wjcroft. I actually don't have an OpenBCI kit so that's why I was looking for the touchproof adapters separately...I hope to order a kit at some point though. I'm interested in doing some EEG recordings + computations, and at…

  in Buying Dry / Active Electrodes Comment by Gromit June 2015
• Hi, Kind of a tangential question, but is there anyway to order an extra set of the touchproof to female header pin connectors that comes with the OpenBCI kit? I'm planning on getting the headband + dry/wet electrode kit from FRI mentioned a…

  in Buying Dry / Active Electrodes Comment by Gromit June 2015