Hacking the Xaar 128 printhead

Powder and inkjet printing
BlueTurtle
Posts: 19
Joined: Mon Feb 13, 2017 5:29 am

Re: Hacking the Xaar 128 printhead

Post by BlueTurtle »

mrino wrote: Wed Dec 09, 2020 12:45 pm Hi all,

I have been trying to print using the XAAR 128 for some time now, but I can't get all the nozzles to print. The data is being sent correctly and electrically everything seems fine. I have flushed the print head several times and the problem persists. I have attached pictures of the setup and the resulting print when all nozzles are activated. I have tried adjusting the ink level relative to the printhead, but there is not much difference regardless of the level. Do you think this is a pressure problem or something else ink related or are some of my nozzles just broken?

Note: The prints are wavy because I'm moving the substrate with my hand.

I would appreciate your help.
Thats ink pressure problem not electrical :)
aengel
Posts: 40
Joined: Fri Mar 16, 2018 2:05 pm

Re: Hacking the Xaar 128 printhead

Post by aengel »

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aengel
Posts: 40
Joined: Fri Mar 16, 2018 2:05 pm

Re: Hacking the Xaar 128 printhead

Post by aengel »

I am interested in paying you to optimize the code and the hardware to increase the speed of the system.

Typically roll to roll printers want to print at 40 meters per minute, while some machines print at 250 meters per minute. Payment for your engineering services by Payoneer, Dwolla, Skrill, Venmo, WU etc. are all available.

Besides code and hardware, would anyone want to write an article describing the system, an article to be submitted to the scientific journals for possible publication? This would be a paid gig likely through Upwork or Kolabtree.

I am very impressed by this forum, and am especially grateful to M. and K. for their great contributions to the project.

This project provides scientists and technicians an entry level cost deposition device for proof of concept projects.

Thank you for reading this posting and enabling innovation. A.Engel. Kansas City Missouri USA
BlueTurtle
Posts: 19
Joined: Mon Feb 13, 2017 5:29 am

Re: Hacking the Xaar 128 printhead

Post by BlueTurtle »

Hey everyone,
I have Non-Wetting 40 pL version of the printhead, never used for sale. Can ship anywhere after payment. Inbox me for more information. Thank you.
Oliver3D
Posts: 1
Joined: Sun Jun 27, 2021 8:40 am

Re: Hacking the Xaar 128 printhead

Post by Oliver3D »

Hello,
I'd like to design a Xaar 128 control board over the summer and sell a few pieces. I'd love to hear from you, what are you looking for in terms of specs? I only have experience in designing FFF and SLA machines, so this is something new to me. So far, I've came up with the following specs:
  • price lower than 200 USD
  • 32-bit CPU
  • Ethernet interface
  • MicroSD
  • 3x stepper motor drivers
  • 12 V input
  • 1x Xaar 128 head output
  • 4x Endstops input
  • 2x UV lamp power output (with changeable output voltage and current control)
  • 2x thermistor inputs
  • 2x fans output
What do you think? Is there anything else, you'd like to see on the board?
Thanks for feedback.

Best,
Adam
taotan
Posts: 1
Joined: Sat Oct 09, 2021 9:34 am

Re: Hacking the Xaar 128 printhead

Post by taotan »

Hi,
Can anyone help to build and supply a prototype controller board with the associated code for XAAR128 for a fee? There will be no complex printing but the nozzles to be fired must be presettable. There will be an external signal to initiate the firing of the preset nozzles continuously and stopping it. The frequency of firing the nozzles can preferably be also presettable from the minimum to the maximum of 4 or 5 KHz.

Best regards,
Tan
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