[SOLVED] Project to replace CY7C64613 in the ICD2

[blueroomelectronics]

I'm out....
Can't take it any more....

How hard did you try? Have you at least built the simpler RS232 version? Did it work?

 

[csaba411]

Yes I do have 2 working RS232.....

Just now finished one more of the USB on the breadboard.
Just the 4550and the 877 and all their conection.
MPLAB find it conect to it and error out.
Conected my HP logic analiser to SPS0-7 and rd-wr-cs, not a single bit going thru.
4550 and the 877 now have their onw 20mhz crystal.
Repalced the 4550 with a fresh one, no change !
What I'm doing wrong ?

 

[lyxer]

Yes I do have 2 working RS232.....

Just now finished one more of the USB on the breadboard.
Just the 4550and the 877 and all their conection.
MPLAB find it conect to it and error out.
Conected my HP logic analiser to SPS0-7 and rd-wr-cs, not a single bit going thru.
4550 and the 877 now have their onw 20mhz crystal.
Repalced the 4550 with a fresh one, no change !
What I'm doing wrong ?

18f4550 must use 27pf or 30pf cystal capacitor?
I use 20pf cystal capacitor
I think the 18f4550 if not work

 

[csaba411]

No..

My clock is ok...
I got 20Mhz on both IC, just checked.
And when I plug it in to the USB port, windows give me the gling-gling sound.
Also I can see it under device manager as Microchip.......

Cant figure it out..

 

[lyxer]

No..

My clock is ok...
I got 20Mhz on both IC, just checked.
And when I plug it in to the USB port, windows give me the gling-gling sound.
Also I can see it under device manager as Microchip.......

Cant figure it out..

can you check my schematic?
thank you very much

I have replace the crystal capacitance to 30pf

 

[PiCS]

select pic for debug
and download new os from debugger

 

[myster_e]

Were Can I found The Rev C. Pics version of the icd2 clone?

What the difference with the previous version?


Thx in advance

 

[NickE]

Today I built my 2nd ICD2. It's a Potyo version clone with little modifications.
**broken link removed**

I'd like to know, is the source code of PIC18F4550 public? Yes, I know, the hex is public and can be disassembled, but I'd like to study a much more readable source.

Thanks,
NickE

 

[csaba411]

select pic for debug
and download new os from debugger

I hate you for this....
I have read it 20 times before I realised what I doing wrong.



Yes it works...

Thanks

 

[xavier38]

Hello !!!
Wath is the difference between Potyo and PicS ??

NickE: your design seems cool, what are your evolutions of the Potyo board ? is i t possible to get your design ???

Please help !

 

[NickE]

NickE: your design seems cool, what are your evolutions of the Potyo board ? is i t possible to get your design ???

I built the earlier version, which contains LT1172 and the programming lines are mirrored when we compare it with the original Microchip ICD2.
Potyo made the changes (LT1172->MC34063, programming lines mirroring, .... the only problem was the RJ-12 connector, because I did not found a really good one to Potyo's board, therefore I modified the PCB design a little.

**broken link removed**

I attached the gerber a drilling files.
I found 3 small problems:
-diameter of hole of shottky diode & pinhead is a little bit small,
-USB led must be connected to RC1 instead of RC2 (dont know, what is the function of this?)
-it is better to drill the hole RJ-12 connector's nail approx. 1mm closer to each other

These problems can be solved within 5 min...

 

[barral]

Potyo, I built your board and it works OK. Only one thing:I moved a track on the mounting hole of the USB connector, and I modified "by hand" RJ12 connections because I did not find connector for that footprint.

The ICD2 works fine (At the moment I have not test it for voltages lower than 5V). Congratulations for this thread.

 

[recursos]

Re: ICD2 Clone, X5 jumpers

Hi Potyo,
I have built one following you 2006-09-18 project (note: the PCB layout PDF prints a little shrunk - don't use it, instead print from Eagle).
I have a question: what for are the X5 jumpers OUT_EN, CMOS_EN, VPP?
Very good job!
Rec

 

[barral]

Anybody had built my version?

Here is my last schematic (the second assembled). The 74HC4066 and the X5 jumper is to place the PGD and PGC pins to high impedance during idle state. If you short connect X5's pin 1 and 2, then icd2's PGD and PGC pins will be in HiZ. This is useful, if you want to use the target's PGD and PGC to another purposes, and want to use icd2 as programmer only.
Short connecting X5's pin 2 and 3 will make the circuit to work as normal icd2.


Attachment removed. You can find the latest schematic and pcb here:

Recursos, here the answer to your question...

Regards

 

[recursos]

... here the answer to your question...
Regards

OK, understood :idea:, thanks.
Rec

 

[xavier38]

Please could you tell me about the differences beztween Potyo and PicS
Lot of thanks

 

[recursos]

Hi people,
Be aware that in potyo2.pdf, page 4 (component values) the values for R3 and R15 are OK, but in page 3 (component designators) the strings "R3" and "R15" are swaped, resulting in MPLAB ICD2 Settings\Status reading MODULE Vpp High.
Rec[/b]

 

[szlovak]

Does anybode had tested if USB led should be connected to RC1 or RC2 ?

 

[recursos]

Hi szlovak
?? Potyo2's schematics shows LED1 = LED USB connected to RC2 (thru R7=300R).
Rec

 

[NickE]

Does anybode had tested if USB led should be connected to RC1 or RC2 ?

When you connect to RC1, the led will be turned on. The hex does not include BCF PORTC,1 or any other instruction, which can turn it off.
So I think that, it must be connected to RC2. I don't know, what is it's function, because there is no usb led on the original ICD2. So its not clear to me...