View Full Version : vp20 schematics or pcb please
Joker_hk
08-09-2002, 03:45 PM
Can someone please post the circuit of this programer
or pcb, etc, ... (any info with be aprecciated)
Or an equivalent programmer...
thanks in advance
NokiaPhreak
08-09-2002, 06:33 PM
http://www.willem.org/vp2as
KnOeFz
08-09-2002, 09:08 PM
@Joker_hk
pls read old topics... all info needed to make it is there... Longbow has almost finished his vp20.
-=K=-
Joker_hk
09-09-2002, 08:25 PM
ok, thanks, I think I got it.
but what I was really trying to understant is if the hardware used to program the pic on the card is a simple i2c bus (SDA, SCK) along with a vpp (13v normally)...
if this is true, then its possible to use a JDM programmer to do what this interface does right?!!
but it doesn't....
it seems that vpp drops to ~8.5 v when it should be near 13..
I've connected an external source but still what I get is a bunch of 3fff on IcProg, has it got something to do with code protection of the chip?!!
Manipulator
10-09-2002, 11:45 AM
@Joker_hk
i don't understand what you talking about.but the JDM can use to program pic16f84,pic16f628,pic16f877,goldcard,silvercard but you need to know how to connect.
Joker_hk
10-09-2002, 04:10 PM
in a goldcard, the conections are like this...
http://www.maxking.com/images/mm2gold64.gif
so, if you connect a JDM to these pins like if it was DIL package, should work right?!!
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