Re: HackEEG: 8 - 32 channel (and beyond) EEG shield for Arduino Due and Mega

How do you handle using the same reference on multiple boards?  Or do you?

Are you using a 6 layer PCB or 4?  I'm trying to keep it nice with 4, but I
have an urge to just go the easy way.  I can get 4 layer boards
manufactured by US vendors that I trust affordablly.  6 layer, not so
much...

Your board sounds very nice.

Grant


On Wed, Jan 22, 2014 at 8:42 PM, Adam Feuer <[email protected]> wrote:

> Folks,
>
> I'm also building an Open Source ADS1299-based EEG (and ECG, EMG, EOG,
> etc.) biosignals shield for the Arduino Due and Mega.
>
> The HackEEG board is also based on the TI ADS1299, bit it takes a slightly
> different approach from the (awesome!) OpenBCI device - it's a shield,
> rather than an independent board. Up to 4 can be stacked on one Arduino Due
> or Mega. On the Arduino Due it can use the USB 2.0 High Speed interface to
> communicate, and has a sync cable to enable using multiple stacks - so you
> can get 64, 128, or more channels if needed.
>
> The Arduino Due driver uses DMA, so it can read data at the maximum rate
> of the ADS1299, up to 16k samples per second, with no data loss, while
> still leaving time for other tasks.
>
>  Since it's a shield, you can use it alongside Wifi or Bluetooth shields,
> as well as whatever other hardware you want.
>
> Though it uses a different driver, it's otherwise software compatible with
> the OpenBCI tools. (That is possible since the tools are open source -
> thank you, OpenBCI team!)
>
> I'm on my second board revision; I plan to do a Kickstarter for it in
> February. I can post more info on the board if there's interest-
>
> cheers
> adam
> --
> Adam Feuer <[email protected]>
> Seattle, WA, USA
>
>
>
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