Damn this cruel world

Started by Lez August 4, 2005


Ha just when I thought the day was going to go so well........

Post arrives, lots of junk, lots of bills, and a few new pics to play with.

Off I went and got the old programmer, still had a 16f84 in it so I
thought right thats good for a few tests.

Plugged it in, found all my old software would not run in xp-dos or xp.

hunted down newer free programmer software, wont read the chip.

Spent an hour trying different software

Spent another hour trying to find what type of programmer mine was, all
I know its serial.

Then decided to check plug/db9 cable etc. no problem with that, and
after all the red led comes on when I try to read/write.

Started to trace tracks on board, no breaks.

Still not reading / writing / erasing

Grabbed multi-meter one more time decided to check if programming
voltage was being switched on, 3 volts. odd I thought.

Checked voltage across zener diode (5v6), about 5.5 volts.

Hit read, voltage drops to about 3 volts ??????

So I was on to something!

Then I saw my mistake, after 5 hours of trying to get it to work I went
back downstairs and got the right power supply for it instead of the
identicle looking one for trickle charging my 6 volt torch.....

Works fine now.


--- In piclist@picl..., Lez <lez.briddon@n...> wrote:
>
>
> Ha just when I thought the day was going to go so well........
>
> Post arrives, lots of junk, lots of bills, and a few new pics to
play with.
>
> Off I went and got the old programmer, still had a 16f84 in it so
I
> thought right thats good for a few tests.
>
> Plugged it in, found all my old software would not run in xp-dos
or xp.
>
> hunted down newer free programmer software, wont read the chip.
>
> Spent an hour trying different software
>
> Spent another hour trying to find what type of programmer mine
was, all
> I know its serial.
>
> Then decided to check plug/db9 cable etc. no problem with that,
and
> after all the red led comes on when I try to read/write.
>
> Started to trace tracks on board, no breaks.
>
> Still not reading / writing / erasing
>
> Grabbed multi-meter one more time decided to check if programming
> voltage was being switched on, 3 volts. odd I thought.
>
> Checked voltage across zener diode (5v6), about 5.5 volts.
>
> Hit read, voltage drops to about 3 volts ??????
>
> So I was on to something!
>
> Then I saw my mistake, after 5 hours of trying to get it to work I
went
> back downstairs and got the right power supply for it instead of
the
> identicle looking one for trickle charging my 6 volt torch.....
>
> Works fine now.

I must have 20 or 30 wall warts hanging around in all kinds of
voltages and outputs. I have marked on the wart with a Brother
label maker the device each one is intended to supply. I have gone
so far as to buy a second copy of a wart just so I can label it for
a different device.

Then, when I put the device away (not that that ever happens), the
wall wart goes with it.



Well at least I know the programmer works still and now its up to me to
get a move on with project number 1, ye old serial controlled relay
project....

(yes done to death a thousand times before, but I need to re-learn all I
forgot and thought I knew...)