Hacking the HP45

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dragonator
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Re: Hacking the HP45

Post by dragonator »

I have no experience with Teensy LC. I think it lacks the more advanced features to print like I am doing now like DMA, but I see no reason why it should be impossible to print with at all. It might just be slow and RAM constrained to do much.

What end goal do you hope to reach with you project and why do you prefer the usage of the Teensy LC?
abdurrahman
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Re: Hacking the HP45

Post by abdurrahman »

hi friend again
V var: variable printhead voltage. Usually between 9 and 12V;
12V: address side 12V input;

can you tell me please?
we have 2 input voltage on version 1.01 .
what is the best stabil way to supply header?

for example:
only one same adaptor 12 volt- 5A
or
2 adaptor : adaptor 1:V var=9V - 5A and adaptor 2:12V=12V - 3A
or
7809 voltage regulator to Vvar to to make stabile voltage to V var
some other idea.
I need yor experiencess about this.
thanks.
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dragonator
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Re: Hacking the HP45

Post by dragonator »

A single power supply of 12V with at least 4A should work fine. Vvar and 12V both being 12V is fine. I have had only one example where the 12V for Vvar was too much. 7809 can only provide 1A, this is too little.
exalted coding
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Re: Hacking the HP45

Post by exalted coding »

does anyone has hacked HP-45 through c8855m?
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dragonator
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Re: Hacking the HP45

Post by dragonator »

There is now a proper guide on how to refill the HP45 printhead. It can be found here: https://ytec3d.com/refilling-hp45-printheads/

If there are any pointers or questions let me know and I will add them.
exalted coding
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Re: Hacking the HP45

Post by exalted coding »

does anyone know?
how has been wroking on the C8855m print head cartridge driver?
abdurrahman
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Re: Hacking the HP45

Post by abdurrahman »

aux2: attached to an broken out pin on the PCB
aux1: attached to an broken out pin on the PCB

i couldnt understand these 2 pins? anybode can explain these pins?

thanks
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dragonator
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Re: Hacking the HP45

Post by dragonator »

Aux pins are used to control external hardware. On V4 there are for instance 9 pins broken out for trigger signals, encoders and such. To do anything with these pins the firmware does need to be made to handle them. I do not know how much earlier versions of the firmware did with them.
abdurrahman
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Re: Hacking the HP45

Post by abdurrahman »

Thanks to dragonator.
And i also i need your another help about hp45 nozzle array. Cardridge has 2 column with 150 point each. i want to learn sequence from 1 to 150 each. i mean left top to bottom each hole equals to primitive x address.
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Re: Hacking the HP45

Post by dragonator »

abdurrahman wrote: Sat May 14, 2022 10:45 am And i also i need your another help about hp45 nozzle array. Cardridge has 2 column with 150 point each. i want to learn sequence from 1 to 150 each. i mean left top to bottom each hole equals to primitive x address.
That is actually quite simple. The odd primitives are on one side, and the even primitives are on the other. If you look at the pin mapping of the 52 contacts you will see that odd is on one side, and even on the other. If you only want to print with one side, all you need to do is drive only one side of the primitives.
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