TI-58C Clone

[Marc van Lemmen]

Hi,
I've created an ICSP connection on my ET-58. I had to cut the trace to pin 1 on the pcb and put a one K resistor between pin 1 and +3.3v. Since there's not enough room for a normal ICSP connector I've used a flat inline female connector an made an adapter cable to connect it to the programmers flatcable. Now I'm able to save/load the program memory (eeprom) of the ET-58. ( and I have to make the adapter cable a bit nicer )

Kind regards,
Marc.

[Pierre]

(12-08-2024 04:25 PM)Marc van Lemmen Wrote:  I've created an ICSP connection on my ET-58. I had to cut the trace to pin 1 on the pcb and put a one K resistor between pin 1 and +3.3v. Since there's not enough room for a normal ICSP connector I've used a flat inline female connector an made an adapter cable to connect it to the programmers flatcable. Now I'm able to save/load the program memory (eeprom) of the ET-58. ( and I have to make the adapter cable a bit nicer )

I must say again and again...
Congratulations !
A nice job!
That I will not be able to reproduce at the risk of either burning my calculator or drowning it under liters of solder.

For the cable I had the same "aesthetic" problem (cable for updating PX calculator firmware) that I solved with a small adapter.

[Marc van Lemmen]

Hi Pierre,

Thank you ! Whenever you are visiting the Netherlands I can make the ICSP connection for you if you want
The only thing I still have to change is disabling the battery once the programmer is connected, now I remove the battery when I use the programmer.

( I can't see the image in your reply, it only shows '[Image: cable.jpg]')

Kind regards,
Marc.

[Pierre]

(12-11-2024 09:52 PM)Marc van Lemmen Wrote:  Thank you ! Whenever you are visiting the Netherlands I can make the ICSP connection for you if you want

Thanks for the offer but I don't travel much anymore...
But if one day you make a calculator clone I'll be interested!

(12-11-2024 09:52 PM)Marc van Lemmen Wrote:  ( I can't see the image in your reply, it only shows '[Image: cable.jpg]')

For the photo I don't understand...
the link is
http://www.phweb.me/clones/download/cable.jpg
or
http://clones.phweb.me/download/cable.jpg

hoping that with the link it works
!

[Marc van Lemmen]

(12-11-2024 10:35 PM)Pierre Wrote:  

(12-11-2024 09:52 PM)Marc van Lemmen Wrote:  Thank you ! Whenever you are visiting the Netherlands I can make the ICSP connection for you if you want

Thanks for the offer but I don't travel much anymore...
But if one day you make a calculator clone I'll be interested!

(12-11-2024 09:52 PM)Marc van Lemmen Wrote:  ( I can't see the image in your reply, it only shows '[Image: cable.jpg]')

For the photo I don't understand...
the link is
http://www.phweb.me/clones/download/cable.jpg
or
http://clones.phweb.me/download/cable.jpg

hoping that with the link it works
!

Hi Pierre,

Now I can see it, thanks ! Looks a lot better than my cable !.

Kind regrads,
Marc.