Hacking the HP45

Powder and inkjet printing
Sean
Posts: 8
Joined: Thu Jan 05, 2017 6:05 am

Re: Hacking the HP45

Post by Sean » Wed Jul 10, 2019 3:36 pm

kokoroto wrote:
Wed Apr 10, 2019 6:08 am
Sean wrote:
Mon Feb 12, 2018 10:34 am
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.
Hi Sean,

Could you share information where to buy those things? I look for it to develop a printer using FPGA based hardware.

:)
Hi, sorry I didn't login in for a long time, just get your message right now, i have send you my email by PM.

Priyashree
Posts: 1
Joined: Wed Jul 17, 2019 8:40 am

Re: Hacking the HP45

Post by Priyashree » Wed Jul 17, 2019 8:46 am

Hie,

@dragonator.... I have tried to build HP45 driver circuit using Arduino Mega and TLC59213 it was working too. When i was shifted to HEF4017 4018 for addressing i am facing some issues. I am not getting the output as i have got with 5 TLC ics.
But my planning is to build the driver chip using xilinx fpga and 2n7002 mosfets. Can anybody guide me to do it. Thanks

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dragonator
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Re: Hacking the HP45

Post by dragonator » Thu Jul 18, 2019 4:48 pm

Hello and welcome Priyashree

Do you have any schematics or images of your circuit. The 4017 circuit has not really ever failed me, so I am curious how you are doing it.

aguskussrow
Posts: 0
Joined: Sat Apr 20, 2019 12:36 pm

Re: Hacking the HP45

Post by aguskussrow » Sat Jul 27, 2019 3:55 pm

Hey guys, how are you? First of all thank you very much for all the information you have given in this forum! I've been following it for a long time and we were talking to Yvo through hackaday a lot, we greatly appreciate the help you have given us.

I come with a couple of concerns that maybe a member has already resolved or has a way to go.

First topic to ask is the printing speed. The development that we are doing is punctually a machine to print books which legally cannot be disarmed (yes, it is something very third world within Argentina). taking into account Yvo designs for oasis and applying Dma in terms of firmware. What should we see more than anything? electronics? Simply optimize the firmware ?. The idea is to reach at least 200/300 mm / s print speed. Which we can mechanically achieve but not to print at those speeds with a quantity of readable ink.

The idea of ​​putting 2 TLC in parallel to obtain 400mA in the primitives I like, may be one of the solutions to be applied to obtain more ink ejection at those speeds.

We are currently running the head with a Teensy 3.5 at 120mhz which brought us some slight benefits in terms of ink.

I hope to open a debate on this topic and be able to generate new ideas regarding the speed of the system, all the information we obtain in our laboratory will be shared by this means, and as soon as you finish the oasis rewrite in C # we will pass it here.

Of course I am grateful for any help that is provided and I send you my regards.

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dragonator
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Re: Hacking the HP45

Post by dragonator » Mon Jul 29, 2019 5:52 pm

Hello and welcome to the forum.

It is a bit quiet at the moment, but most people do take a look occasionally. If they cannot help I am already set to start again somewhere around September.

Best of luck

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