Hacking the HP45

[evomotors]

@dragonator -I'm not a C programmer so I'm converting the code and found this line in the Printhead_commands.ino:

Code: Select all

printhead_print_array_repeat[printhead_array_write];

I assume I can delete it as it does not do anything? Am I correct?

[dragonator]

@Evo It does not do anything yet. I want to use that to optimize simple shapes. Why stuff a segment of a straight line into the buffer 100 times when you can just say 'that piece of the buffer, 100 times'. It is not crucial right now.

@Boooster. Thank you for the amazing images of the printhead. I really enjoy seeing it up close.

I see that the array is not just 3 from your images. I cannot confirm this right now but I will take your word for it. It is not crucial to know to operate the head and the schematic overview is to give a feeling of how the head is laid out, not a schematic. If I do ever revise it I will add your information.

I have never seen the HP45si. Now that I have seen it I also know why I haven't seen it before. It is nowhere to be found on the internet. It is an interesting head though, if anyone knows where to find it in the real world I would much like to know.

[evomotors]

By the way, I got email about that refillable transparent body HP45 from the distributor and he is saying that It can used with solvent ink, pigment ink or dye ink. I don't know if it is true statement or not.

[evomotors]

Installed 0.2 nozzle and now I can easily print template for pogo pins. Only issue that I don't know exact positions of the pins so it may take some time as I will have to print multiple times and readjust.

[dragonator]

That looks better than I thought was possible. As soon as I have a 0.25mm nozzle again I will try myself too. If you have until the weekend I can design a template that should fit at home. I already have the hole pattern in Solidworks.

[evomotors]

@dragonator - sure I'll wait for your template design. I don't have all the components yet anyway. thanks!

I'm sure it can be printed more accurately. I don't have auto alignment enabled and didn't re-align printer after nozzle replacements. I didn't event adjust the z-height (I simply forgot).

[dragonator]

I did not have the file I hope I had, but I have tried to make it as good as I can right now. It is 7.2mm thick. I would appreciate it if someone could test it for me. I currently have neither the nozzle nor the printing capacity to test it.

HP45 V1.01 template.JPG (41.65 KiB) Viewed 15353 times

HP45 controller V1.01 template.STL.zip

(69.71 KiB) Downloaded 676 times

[evomotors]

I Have to go out with my family tonight I'll print it after that. I'll test it tomorrow or later today.
What is the diameter of the holes? I had to make a lot larger than 0.8 for it to print normally.

[dragonator]

It is currently 0.8mm, but if you have a certain diameter you need to make it printable I can convert it in a minute.

[evomotors]

The holes have to be +0.2 to diameter in order for pins to fit in the holes.