[chbot] USB silly-scope

[Hanno Sander]

Hi,
The chip I'm using is the TLC 5540.
It samples at 40Mhz which gives a usable bandwidth of 8Mhz- fine for Video-
which is my main application.  I just terminate my 2Volt video signal with a
resistor and get great results.  For larger voltages you could try a
resistor network.  For other uses, like a dc offset, things get more
advanced- check this out: http://alternatezone.com/electronics/dsoamk3.htm

I'm looking to have some pcb's made up to go with my propeller protoboard.
Functionality would include:
- 2 h-bridges
- 3 Axis digital Accelerometer
- 40Mhz ADC with input from BW camera
These would be for beta kits of the dancebots, but could be used to built
pretty cool robots or just be used for Video/Analog input into the
Propeller.

Anyone interested?  Where should I have them made?  I've heard good things
about  goldphoenixpcb.biz...
Hanno


On Sat, Mar 1, 2008 at 4:08 PM, Chris Hellyar <chris at trash.co.nz> wrote:

> Just thinking about this a bit more, and what I use my CRO for.
>
> How would you go for an analog front end on this if you were to DIY a
> scope?  Or were you just thinking about using it for low voltage stuff
> where isolation & input range isn't so much an issue?
>
> I'm thinking large DC offsets, like 80 vdc offset, looking for a 5 volt
> signal..
>
>
>
> On Thu, 2008-02-21 at 09:17 +1300, Hanno Sander wrote:
> > Hi,
> > My program "ViewPort" lets you use the Propeller as a 40Mhz Oscilloscope
> when used
> > with a $5US Analog Digital Converter.  If more
>
>
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