Hacking the HP45

Powder and inkjet printing
Miltea
Posts: 3
Joined: Mon Jul 25, 2022 10:52 am

Re: Hacking the HP45

Post by Miltea »

dragonator wrote: Tue Jul 05, 2022 4:12 pmSent via mail
I want to start with C8855 manuel, is it possible to share the C8855 manuel?
rp7@aclas.com,thanks
Berndi
Posts: 1
Joined: Mon Mar 27, 2023 12:54 pm

Re: Hacking the HP45

Post by Berndi »

Dear dragonator,

I want to start with C8855 board, too.
Is it possible to share the C8855 manual to me also.

Many thanks in advance.
Berndi
BerserkerBilly
Posts: 1
Joined: Thu May 04, 2023 5:37 pm

Re: Hacking the HP45

Post by BerserkerBilly »

Dragonator, We have a coded cartridge that will only read in certain printers, and those printers require this particular coded cartridge, and will not read non-coded carts. Apparently certain pins have been "burned out" to accomplish this coding. How would you go about finding which pins have been "burned out"?

Would it be the Address pins that are burned out to code it, or possibly the grounds?
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dragonator
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Re: Hacking the HP45

Post by dragonator »

I have heard hints of stuff like this happening before, but I have never seen it personally. My quess would be to measure resistance in the "wrong" direction, ie positive lead on ground, and negative leads on addresses and primitives. I have noticed that resistance is based on polarity.

Hope this helps.
UKrieger
Posts: 2
Joined: Fri Jul 28, 2023 10:28 am

Re: Hacking the HP45

Post by UKrieger »

Hi,

can somebody help with finding a Connection diagram and Software or command reference for using the C8855M Print head driver board? I got one board and empty cartridges which I plan to use for printing droplets for a microscopic aerosol study.

Any help is much appreciated,

Uli
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dragonator
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Re: Hacking the HP45

Post by dragonator »

The best I can do is a manual for the C8855 driver, which I can send by mail. It has no software, and I don't think a wiring diagram of the C8855 itself, but it does explain how to roughly use the C8855.
xonaru
Posts: 1
Joined: Mon Jul 24, 2023 7:38 am

Re: Hacking the HP45

Post by xonaru »

dragonator wrote: Fri Jul 28, 2023 7:18 pm The best I can do is a manual for the C8855 driver, which I can send by mail. It has no software, and I don't think a wiring diagram of the C8855 itself, but it does explain how to roughly use the C8855.
Hi dragonator,
Now trying to deal with board on which 1825-0057 STM chip is placed , and I think manual for the C8855 driver will help me a lot.
Please, send it to my mail.
Thanks.
xonaru@ya.ru
Last edited by xonaru on Sat Jul 29, 2023 4:55 pm, edited 1 time in total.
UKrieger
Posts: 2
Joined: Fri Jul 28, 2023 10:28 am

Re: Hacking the HP45

Post by UKrieger »

Thanks dragonator for sending the C8855 manual!

I intend trying out controlling the C8855 driver board using a Raspberry Pi. But before I start: Has anybody tried out this before and is willing to share her/his experiences?

Uli


dragonator wrote: Fri Jul 28, 2023 7:18 pm The best I can do is a manual for the C8855 driver, which I can send by mail. It has no software, and I don't think a wiring diagram of the C8855 itself, but it does explain how to roughly use the C8855.
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