Homebrew PCBs

I have had great success with my home made light developer box, I used
facial tanning tubes complete units can be bought off ebay complete with the
timer circuit

See this link for a range   of units, I used the Philips one 

http://www.ebay.co.uk/sch/i.html?_trksid=p2047675.m570.l1313.TR2.TRC0.A0.Xfa
cial+tanner.TRS0&_nkw=facial+tanner&_sacat=0&_from=R40

 

I then searched ebay for a cheap but deep scanner box took all the parts out
of the scanner unit and adapted it

 

http://www.ebay.co.uk/sch/i.html?_trksid=p5197.m570.l1313.TR3.TRC0.A0.Xusb+s
canner.TRS0
<http://www.ebay.co.uk/sch/i.html?_trksid=p5197.m570.l1313.TR3.TRC0.A0.Xusb+
scanner.TRS0&_nkw=usb+scanner&_sacat=0&_from=R40>
&_nkw=usb+scanner&_sacat=0&_from=R40

 

look for an old scanner even a parallel port 

cheap  and with reasonable depth

my own website has a photo of the finished unit

I did take several pictures during the making of the developer box, for me
it was key to have a timing unit and the facial tanners such as the Philips
have them .

 

http://www.qsl.net/g4xcp/Projects.html

 

a pcb I developed using the scanner  can be seen here

 

http://www.qsl.net/g4xcp/Interface.html

 

for me the timer, which is mechanical was important

you then produce little test wedges of circuit board with different timer
settings

make a note on the back of the pcb but also write notes such as whom you
bought the pcb board from

keep the timing figures, where you bought the board from in a dust free
folder.

Regards

gail



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