This is a working RS232.... ICD2 !!!!

simce · Aug 30, 2004

what is fds4435

I've bypassed HC126 buffers, and problem is solved.

Testu · Aug 30, 2004

icd2 connect to rs232

simce said:
I've bypassed HC126 buffers, and problem is solved.

Also you can try mount 33R - 82R resistors after buffers as partial series termination.

simce · Aug 30, 2004

icd2 failed to read all of requested bytes

Also you can try mount 33R - 82R resistors after buffers as partial series termination.

A think it is not needed since i have still using 330 ohm from MCU to target connector
8)

ColdFire · Sep 13, 2004

explore 16 unable to connect with mplab icd 2

Hi All,

Have anyone used the ICD2 from this link h**p://icd2clone.narod.ru. Can I use it with a 3.3v target and 5v target with MPLAB 6.6. Please advice. Thank you.

Regards

Testu · Sep 13, 2004

18f1320 bootloader

ColdFire said:
Hi All,

Have anyone used the ICD2 from this link https://icd2clone.narod.ru. Can I use it with a 3.3v target and 5v target with MPLAB 6.6. Please advice. Thank you.

Regards

You can use ICD2clone 3 3 for from 2.0V to 5.5V targets with any released MPLAB 6.x.

nightmare3ihut · Sep 14, 2004

icd2 18f877

i loaded this file from mcu.cz but don't know if its correct.

mabbri · Sep 16, 2004

pic16f877a icd2

In original ICD2 **broken link removed** from microchip when the resistance of MCP41010 is at its highest value Vprog is at its lowest value and viceversa, but in CD´s design when the resistance of MCP41010 is at its highest value Vprog is also at its highest value and viceversa.
Can anyone explain that?

Testu · Sep 18, 2004

icd2 serial command

mabbri said:
In original ICD2 **broken link removed** from microchip when the resistance of MCP41010 is at its highest value Vprog is at its lowest value and viceversa, but in CD´s design when the resistance of MCP41010 is at its highest value Vprog is also at its highest value and viceversa.
Can anyone explain that?

The schematic in 0430_004.pdf is NOT original ICD2 from microchip.

mabbri · Sep 18, 2004

zaphod42 bootloader

Ok, but the same difference exists between Jenda´s scheme and CD´s scheme

magic_book_man · Sep 22, 2004

read file schdoc

Hi, I'm from Colombia and I'm a new member at this forum.

I'm new on this, so I'm lost :roll: .

I wonder if someone can tell me which is the url where the schematic and some info of the ICD2 clone is avaliable.

Does the clone work properly with the dsPIC30F4011/4012??? :?:

Regards.

Magic Book Man (from Barranquilla,Colombia).

nightmare3ihut · Oct 15, 2004

icd2 serial

Testu,thi ICD2 from //.narod.ru use PIC16F876,is it work? what about the bootloader for it?is the file ICD661.hex?

tellhun · Oct 27, 2004

pic16f628a unable to enter debug mode

Helló Joe123!

What the Q1,Q2,Q3,Q4,Q5,Q6 and diode the ICD2.schdoc

tellhun

joe123 said:
Hello All... Now I hope I dont get shot for asking this question....

Ive decided to build an ICD2. I have read and read this forum up and down and gotten a fairly good understanding of what I need to do..

1. I will be using a 16F877A thus I must program with BootLoader.hex (also known as BootLoader16F877A.hex). WRT set to enabled and HS as the oscillator configuration. I can then automatically update with new frimware from MPLAB.

2. I have a set of about 10 different schematics downloaded from this and other threads. Unfortunetally, I cannot make sence of which one is the most curent and functional (I now many of the early versions had minor errors which were copied into other members versions). I am not interested in USB since it is too hard to get a hold of the Cypress USB IC.. Can someboody PLEASE direct me to the most current shematic..

Below are some of the schematics I'v found.

Regards: Joe

Sobakava · Nov 5, 2004

rs232 use mosfet

I assembled the board with exactly same components.
But I see +7.5 / -7.5 at MAX232's pin2 and pin6.
I corrected the C12 also, nothing changed...

PC can connect to ICD and download firmware. But when I try to program a part at target, it fails. I read 0x1ff part number even there is no target chip installed.

Charge pumps are running.
I see ~10V at the input of LM317. And When I try to program a part, I see Vpp is ~6V. What's wrong?

crazyduck · Nov 5, 2004

18f877 with 18f877a

Hi,
Which board did you used ???
You must have ~15V at the LM317 entry. Look at your LM317 connections, be sure the diodes from the charge pump are correctly mounted.

CD:°

Sobakava · Nov 5, 2004

...programming goto 0x00 command

I've icd2_dip.pcb board of crazyduck.

I checked diodes, seems ok...

is there anyone could make this board work?

Testu · Nov 5, 2004

failed to read all of requested bytes icd2

nightmare3ihut said:
Testu,thi ICD2 from //.narod.ru use PIC16F876,is it work? what about the bootloader for it?is the file ICD661.hex?

It's working with PIC16F876A and ICD661.hex (firmware).

crazyduck · Nov 5, 2004

icd2 reverse engineering

Hi,
I've realized two ICD2 boards and the both work fine. I've test some voltage points and I found this:

~10V at the input of LM317 and 12,7V at the output.

You must have to program your 16F877A with the correct firmware (look on this topic)

CD:°

sysop104 · Nov 17, 2004

ccs for pic 877a rs232c

crazyduck said:
Hi,
I've realized two ICD2 boards and the both work fine. I've test some voltage points and I found this:

~10V at the input of LM317 and 12,7V at the output.

You must have to program your 16F877A with the correct firmware (look on this topic)

CD:°

Hi,

@Crazyduck
Can you please clear up (regarding your schematics), what is the correct polarity for the capacitor C12 (pins 4,5 of MAX232) and also the capacitor C10 (pin 2 of MAX232 to GND?). Kindly please explain us what is correct as you have uploaded several schematics (pdf,protel etc etc) and in all of them pin 4 of MAX232 has the minus (-) of 10uf. However in this same thread (above), others have said that this is wrong!
Also regarding the capacitor C10 from pin2 of MAX232 (10uf), in your schematics always plus (+) is at pin2 and minus (-) is connected to GND. Is this correct ? Incidentaly mcu.cz has same polarity in their schematics for cpacitors C10 and C12! Can you please clear this small issue?

B.R.

crazyduck · Nov 18, 2004

74hct126 74hc126

Hi sysop104 and everybody,

Ooops I've not see this problem. I just look on the max232 datasheet, and C12 is inverting !!!
But not C10.
I'll take a look at my boards, and change C12's polarity if it's wrong.
I'll said my results.

CD :?

crazyduck · Nov 18, 2004

icd2 16f876

Hi,
I'm very confused, I've make a mistake on my ICD2 schematic. The C12 must be invert.

Sorry......

CD :?

This is a working RS232.... ICD2 !!!!

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