Search found 110 matches

by Wonko
Mon Nov 06, 2023 10:43 pm
Forum: 3DP printing
Topic: Ricoh printheads
Replies: 13
Views: 40366

Re: Ricoh printheads

Oh, wow. That is a pretty good setup for, um, still 2.500 Euros, but better than sinking the cost of a car... . Looks like a very easy entry into these kind of heads!
by Wonko
Fri Sep 29, 2023 10:04 pm
Forum: 3DP printing
Topic: Hacking xaar 1002/1003
Replies: 9
Views: 32233

Re: Hacking xaar 1002/1003

I originally published the Xaar 128 PCBs and code here. It would be great if the OP could send me the data sheet and documentation. Maybe I can help a little. It would be even better if I could get my hands on one of those 1003 heads for a lot less tha 4k$. Any ideas?

Thanks, Wonko.
by Wonko
Mon Jul 24, 2023 11:06 am
Forum: 3DP printing
Topic: Hacking the Xaar 128 printhead
Replies: 365
Views: 1312780

Re: Hacking the Xaar 128 printhead

Pin 9 is marked as TEST 0, and the discs say "not required for operation, should not be connected".For pin 28 however, marked CLK, you must provide a 1 MHz clock signal to the print head. No PWM, just a 50:50 clock.
by Wonko
Sat Jul 01, 2023 7:14 pm
Forum: 3DP printing
Topic: Hacking the Xaar 128 printhead
Replies: 365
Views: 1312780

Re: Hacking the Xaar 128 printhead

Try to find the Saar 128 manual. It describes also the pressure of the ink at the head (it is actually supposed to be negative). You can test if your communication is working by fully connecting the serial bus and checking if the data that is pushed in on the MISO pin also comes out again on the MOS...
by Wonko
Wed Jun 21, 2023 12:19 pm
Forum: 3DP printing
Topic: Hacking the Xaar 128 printhead
Replies: 365
Views: 1312780

Re: Hacking the Xaar 128 printhead

Pin 24 of the printhead "READY" is an output from the printhead to the Arduino if you choose to connect it. If READY is high, you can check nFIRE. It is switched high a soon as two of the three firing cycles got triggered. I have no idea what "nReady" signal you are referring to....
by Wonko
Mon Dec 05, 2022 4:09 pm
Forum: 3DP printing
Topic: Hacking the Xaar 128 printhead
Replies: 365
Views: 1312780

Re: Hacking the Xaar 128 printhead

Yes. Water will destroy your head. I don't know how ink is different, but it seems to have to do with conductivity. Maybe Epson heads can do that?
by Wonko
Mon Nov 14, 2022 4:16 pm
Forum: 3DP printing
Topic: Hacking the Xaar 128 printhead
Replies: 365
Views: 1312780

Re: Hacking the Xaar 128 printhead

Angefrank wrote: Thu Nov 10, 2022 3:19 am It's possible for you to post the electric diagram of the setup? I'm interesting to try the xaar128.
No problem: https://github.com/MatthiasWM/Xaar128
by Wonko
Mon Oct 31, 2022 10:52 pm
Forum: 3DP printing
Topic: working on slicer in blender
Replies: 22
Views: 140119

Re: working on slicer in blender

I can just load in an image that I run through a dither process as a NumPy array and start to disassemble it then feed it to the Arduino Pretty much, yes. NumPy is not really needed. The Python Image Library PIL can load an image, dither (defaults to Dither.FLOYDSTEINBERG), and return pixel values ...
by Wonko
Sun Oct 30, 2022 9:58 pm
Forum: 3DP printing
Topic: working on slicer in blender
Replies: 22
Views: 140119

Re: working on slicer in blender

My board and my testing software are here: https://github.com/MatthiasWM/Xaar128 You basically send the dot data in 128 bits / 16 bytes in two block of 8 bytes to SPI device 1 and 2 and pull the FIRE pin low IRC. The C++ code is hopefully readable enough. Th get from a PNG image to 128 bits you can ...
by Wonko
Fri Sep 02, 2022 11:59 am
Forum: 3DP printing
Topic: working on slicer in blender
Replies: 22
Views: 140119

Re: working on slicer in blender

[/quote] hope you don't mind if I steal some of the code. [/quote] That's ok. It's why I put it as OpenSource on GitHub, so others can profit as well. If you do use some of my code, just mention where you got it in your README. I use mainly FreeCAD because I want numerical precision. It actually off...