From: sleeper75se (sleeper75se_at_yahoo.se)
Date: 2002-01-18 07:38:04
--- In buildcheapeeg_at_yahoogroups.com, Moritz von Buttlar <info_at_baltic-microsolutions.de> wrote:
Hi Moritz,
> Also, your design is quite expensive in comparison and more
> difficult to build for the electronics novice.
Yes, I know. Since nobody but me (and a perhaps a few others) will
build this very first version, I can just as well put the design on a
performance and cost level that suits me. And I don't particularily
like drilling some 300+ holes either, that's why it is surface-
mount. :-) Don't worry, I will return to the cheaper options, based
on through hole parts (and TinyAVR perhaps), in due time but I need
to get into it a bit first.
> But I like the small size very much :)
Me too.
>
> Maybe we could make a 3-Stage-modular-design consisting of the
> following stages:
>
> - analog amplifier
>
> - adc and uC
>
> - communication/power supply/isolation
That's basically what it's going to look like. The amplifier is done,
the ADC/uC is in the works and if you look closely at that schematic
you'll find a LED. It is used for data transmission. The receiver is
on another board, not designed yet.
The power bit is very simple (at least in theory, before practical
tests). A couple of batteries and low-dropout linear regulators is
all that there is to it. Also, the batteries can be replaced with the
output from a DC/DC-converter and possibly a voltage inverter.
Taking these pieces apart and combining them with other people's
designs should be fairly simple.
I Hope this answers your questions. :-)
Regards,
Andreas
This archive was generated by hypermail 2.1.4 : 2002-07-27 12:28:36 BST