Hacking the HP45

Powder and inkjet printing
User avatar
dragonator
Site Admin
Posts: 408
Joined: Fri Aug 14, 2015 4:48 pm
Location: The Nethelands
Contact:

Re: Hacking the HP45

Post by dragonator » Mon Dec 18, 2017 6:48 pm

Just a short update to let people know that I am not dead and still working on the HP45.

I got a package last Friday, containing a new batch of HP45 connectors. This bumps down the price for them from €45 per unit excluding shipping to 20-25'ish. Why is a bit complicated, but I am now committed to making a functional controller and selling it.
HP45 connector Batch 20171218.jpg
HP45 connector Batch 20171218.jpg (367.39 KiB) Viewed 4732 times
On the HP45 V2.01 controller: I have the encoder in the system working. There is a functional buffer. The link between the buffer, motion and inkjet is almost set, but still needs finishing. I am currently working on something that is causing the nozzles to be out of order. I have not found the exact cause, but I have a good indication.

Progress will still be slow for the coming few weeks. I have other projects that I want to finish first, but I am working on making the HP45 controller work on the background.

david
Posts: 55
Joined: Wed Sep 21, 2016 8:43 pm

Re: Hacking the HP45

Post by david » Sat Dec 23, 2017 3:05 pm

Hi, dragonator, if you need that connector. I can probably help. for 20ish EURO, I can get you the whole set, including the mounting kit, not just the contacts.

NealXu
Posts: 1
Joined: Fri Jan 26, 2018 1:40 pm

Re: Hacking the HP45

Post by NealXu » Fri Jan 26, 2018 1:55 pm

Hi...I will keep the 12V on the address line. I still have some trouble with the legal English and what the 10x does exactly. The 10x is used to determine the resistance of the pad, which in turn is used to determine the resistance of the printhead?

https://www.7pcb.ca/
Last edited by NealXu on Wed May 16, 2018 10:02 pm, edited 1 time in total.

User avatar
dragonator
Site Admin
Posts: 408
Joined: Fri Aug 14, 2015 4:48 pm
Location: The Nethelands
Contact:

Re: Hacking the HP45

Post by dragonator » Sat Jan 27, 2018 8:21 am

The 10x is also a bit unclear to me, but it seems that the printheads might not all have the same resistances due to the manufacturing. The 10x might be a way to mitigate this. I also use it to determine the temperature, because from what I have measured so far, the 10x and temperature sensing resistor have the same offset.

xzyang
Posts: 1
Joined: Mon Jan 23, 2017 2:42 am

Re: Hacking the HP45

Post by xzyang » Wed Feb 07, 2018 9:39 am

Can you make an HP C8855 datasheet for reference?
ST1825-0057 chip periphery is simple, do not know how to connect its MCU interface MCU

NecDET
Posts: 3
Joined: Sat Aug 27, 2016 12:55 pm

Re: Hacking the HP45

Post by NecDET » Thu Feb 08, 2018 8:36 pm

hello,

I would like to share a ready pcb board for HP45 (52pin printer cartridge connector)
http://www.cfconn.com/product-show_14712/

User avatar
dragonator
Site Admin
Posts: 408
Joined: Fri Aug 14, 2015 4:48 pm
Location: The Nethelands
Contact:

Re: Hacking the HP45

Post by dragonator » Fri Feb 09, 2018 7:59 am

They only sell the connector, not the PCB. The PCB is nothing more than a show piece in that picture. I know this because that is where I buy the HP45 connector. I currently have around 100 of them at home (They only sell in bulk).

NecDET
Posts: 3
Joined: Sat Aug 27, 2016 12:55 pm

Re: Hacking the HP45

Post by NecDET » Sun Feb 11, 2018 1:17 pm

dragonator wrote:They only sell the connector, not the PCB. The PCB is nothing more than a show piece in that picture. I know this because that is where I buy the HP45 connector. I currently have around 100 of them at home (They only sell in bulk).


Thanks for information,

I am stil looking for electronic control system for HP45 print head ?

Do you have possibility to send some information

Thank you

math
Posts: 21
Joined: Tue May 24, 2016 1:08 am

Re: Hacking the HP45

Post by math » Sun Feb 11, 2018 5:08 pm

I would like to share this document from HP that specifies cartridges that has and cartridges that don't have active electronics embedded.
http://h20195.www2.hp.com/v2/GetDocumen ... rica&lc=en

Sean
Posts: 7
Joined: Thu Jan 05, 2017 6:05 am

Re: Hacking the HP45

Post by Sean » Mon Feb 12, 2018 10:34 am

dragonator wrote:Just a short update to let people know that I am not dead and still working on the HP45.

I got a package last Friday, containing a new batch of HP45 connectors. This bumps down the price for them from €45 per unit excluding shipping to 20-25'ish. Why is a bit complicated, but I am now committed to making a functional controller and selling it.

HP45 connector Batch 20171218.jpg

On the HP45 V2.01 controller: I have the encoder in the system working. There is a functional buffer. The link between the buffer, motion and inkjet is almost set, but still needs finishing. I am currently working on something that is causing the nozzles to be out of order. I have not found the exact cause, but I have a good indication.

Progress will still be slow for the coming few weeks. I have other projects that I want to finish first, but I am working on making the HP45 controller work on the background.
it's too complicated, I have bought like this, it's much easier than your supplier, and it's much cheaper, I can help you to purchase these if you want.
Attachments
holder_for_hp45.jpg
holder_for_hp45.jpg (96.75 KiB) Viewed 4302 times

Post Reply