Homebrew PCBs

--- badgers <badgers@...> wrote:

> hello, I use Linux and I am interested in building a
> PCB for a circuit 
> that I did not design.
> It is a 7106 A/D with LCD driver to be used as a
> thermostat with a diode 
> and a 9 volt LM7809 volt regulator.
> 
> The circuit is based on Fig 18 on Page 13 of the
> following PDF>
>
http://www.cpdee.ufmg.br/~aguirre/datasheets/FN3082.PDF
> 
> there are a lot of little traces to connect between
> the 7106 and the 3.5 
> digit LCD panel.
> 
> This will be run off of a car electrical system so
> the 12-14 volt input 
> is being regulated by the 9 volt linear chip. 
> I want to use the methods pointed out at this page
> for physical 
> construction of the board>
> http://www.fullnet.com/u/tomg/gooteepc.htm
> 
> PS if anyone has used this chip I am open to
> suggestions, I already have 
> the chip, LCD and regulator.
> I have a ton of resistors.
> 
> Thank you for your help and have a good day.
> 

Try the opensource KiCad, there's a Yahoo user group
for it, or look for it on sourceforge. There are
Windows versions too.

As someone else mentioned, the 7106 is for display
only, you'll have to use a separate control circuit,
using the same temperature signal. Not really hard to
do unless you're an absolute beginner.

- YD.



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