hi all
im building a digital car clock, i'm cheating a bit, i'm using a clock kit based on the PIC18c54. i rather fancied a blue display.i can get blue in common anode, but not the common cathodes used in the original design.
there are only 7 anode lines (multiplexed)so would it be ok to use an inverter, or could the pic18c54 perhaps be set somehow to suit.?
i would like to enable the display only when ignition is on perhaps the inverter could do this as well?

any help much appreciated

dougal

 

ps i would like to use .56" 7 segments but cant find a uk stockist.

 

Hello,

Digi-key has .56" displays in CA and CC
http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=160-1517-5-ND
http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=160-1518-5-ND

Greetings,
Bertus

 

thanks bertus, i did check them out- no minimum order value, but shipping from the states.

 

Hello,

Perhaps you can use the type numbers to look at a closer supplier.

Greetings,
Bertus

 

look like i might have found some at farnell, will work out quite expensive, as i can get clock module and ca display together at rapid,
will have a think, in the meantime any thoughts on my inverter suggestion welcome.

regards
dougal

 

Why not look at the fuse box to see what you could tap into. There are lots of choise (but be careful), the clock shouldn't draw too much current.

Shouldn't you be able to invert the output with software?

 

ive just thought, if i invert the processor output, it will change the duty cycle drasticly.so thats probably no good.

 

thanks bill, i,m not too good on processors,