[sudo-discuss] Sudouino Microcontroller

[Matthew Senate]

+1!


On Fri, Nov 15, 2013 at 1:51 PM, Hol Gaskill <hol at gaskill.com> wrote:

> Here's the schematic of what I have so far, with some capacitor values
> needing to be changed and headers need to be properly modeled, and the FTDI
> chip will not be onboard, just have it shown attached for now.  The ULN2003
> unit cost is low - it is good for running 2 separate strips of RGB LEDs or
> turning on pumps and solenoids and whatnot with up to 500mA per channel.
>  Do you know of power mosfet arrays that come together in one IC?  If
> there's interest in choosing an H bridge instead of an array of NPN
> transistors, we could do that first, or do both at the same time and give
> people the option.  Attached are 2 pics of a utility power-output board
> I've been using with great success for general purpose power output that
> gives a little design heritage of the ULN2003 case.
>
> One question is - do we make it breadboard friendly or arduino shield
> friendly?  That will definitely drive PCB layout.  Also, should we do it
> all through-hole or should we shop around for SMD fabrication services?  My
> inclination is to do through hole and sell as a kit, or assembled.  Makes
> it a bit more accessible at a small space and weight expense.
>
> Thoughts?  Also soliciting ideas for logos :)
>
> Cheers,
> Hol
>
>
> Nov 15, 2013 01:24:58 PM, steveberl at gmail.com wrote:
> Hol,
> >Consider putting an H-bridge on the board also. Nice for bi-directional
> applications.
> >Also think about MOSFETS instead of traditional power transistors as they
> have lower forward resistance and dissipate less power
>
> >Steve.
> >
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