Ozipic'er p16pro40 problem

[Sahbin]

Hello, I have recently built the ozipic'er parallel programmer but unfortunately it doesn't work. I checked the circuit several times but my computer still doesn't detect it (I have also tried with 2 other pc's). I use it with 2 9volt batteries the green, the jellow and the red leds are on but winpicprog doesn't detect it. Please help me I am lost :s
I attached 2 pictures of the programmer below.
Thanks

 

[Nigel Goodwin]

What OS are you running, and what type of computer - presumably it's an old one if it has a parallel port?.

 

[Wp100]

Hi,

The typical problems with that type of programmer are fitting the transistors incorrectly.

The pin outs can be different depending on the makers, so check the ones you have bought.

Also the type of parallel cable can be important, use a proper screened cable and keep the length to not more than 1 meter.


The P16PRO programmer is very similar and works well but only uses 3 transistors.

 

[Sahbin]

I have tried with a windows xp and windows 98 (from 1999) without luck. I will check the date sheets again.

 

[Nigel Goodwin]

WinPicProg has manual toggle buttons for fault finding, manually select the correct port address and then try toggling the output pins, you should be able to turn the LED's ON and OFF.

 

[Sahbin]

LED's stay ON no mather what (I didn't use the cable I plugged it directly to the parralel port). I also looked at transistors but they seem to be fitted correctly.

 

[Nigel Goodwin]

LED's stay ON no mather what (I didn't use the cable I plugged it directly to the parralel port). I also looked at transistors but they seem to be fitted correctly.

What address is your parallel port?.

 

[Sahbin]

$378 (checked at BIOS) by the way it happens to be that my pnp transistors were fitted backwards . Now when I power up the board without the pic, only the green LED turns ON, when a place the pic the jellow LED turns also ON. As soon as I connect the parallel port the jellow turns OFF and only the green one stays ON

 

[Sahbin]

Hi, today I tried again but it doesn't work, I even changed the parallel port modes to compatible, EPP, ECP and bi-directionnal but non of them worked. I am lost :s

 

[Nigel Goodwin]

Set the port address to $378 manually in WinPicProg, and then try pressing the toggle buttons, do the LEDs change state or not?. If not, check the voltages on the actual pins of your parallel port.

 

[Sahbin]

I checked the voltage on all pins (programmer not connected to pc and without pic):
View attachment 67761

 

[Nigel Goodwin]

Have you tried the manual toggle buttons?.

 

[Sahbin]

yes I switched between D0 to D7 but nothing happended. I even restarted the program after each try.View attachment 67769 View attachment 67770

 

[Nigel Goodwin]

yes I switched between D0 to D7 but nothing happended. I even restarted the program after each try.View attachment 67769 View attachment 67770

You don't need to switch between the different port pins, leave them set correctly for the Ozipicer, ensure the port is set to the correct address, and manually toggle the Vdd and Vpp (and Vpp40) pins using the onscreen buttons - the relevant LED's should go ON and OFF as you do. If they don't, then check if the voltages on the port pins themselves change as you toggle - the pin numbers, and WinPicProg settings are clearly marked on the schematic.

 

[Sahbin]

well when I plug the programmer in, the red LED's light up. When I switch vdd On they become brighter (they are both ON the entire time even when vpp40 and vpp is OFF). This is the voltges of the parralel port:

(D4=Vdd, D5=Vpp, D6=Vpp40, D10=ACK)

Vdd ON:

D4 = 3.33V
D5 = 3.34V
D6 = 3.34V
D10 = 4.46V

Vpp ON

D4 = 0.079V
D5 = 0.079V
D6 = 3.34V
D10 = 4.46V

Vpp40 ON

D4 = 0.079V
D5 = 3.33V
D6 = 0.079V
D10 = 4.46V

It seems that D5 and D6 are reversed on Vpp and Vpp40 ?

 

[Sahbin]

here is what happens when I switch it on

 

[Nigel Goodwin]

Again, use the manual toggle buttons and a voltmeter to trace exactly what's happening as you toggle the various pins high and low/on and off.

 

[Sahbin]

View attachment 67796

 

[Nigel Goodwin]

OK, now check the voltages on the other side of the buffer IC, pins 2, 4, 5, 8, 10, 12.

 

[Sahbin]

74HC14:

Pin 2 = 5.33V
Pin 4 = 5.30V
Pin 5 = 0.74V
Pin 8 = 5.27V
Pin 10 = 0.76V
Pin 12 0.74V