Search found 96 matches

by Wonko
Thu May 26, 2016 1:46 pm
Forum: 3DP printing
Topic: Hacking the Xaar 128 printhead
Replies: 320
Views: 191681

Re: Hacking the Xaar 128 printhead

Hi Philipp, The head has only a single waveform that it generates internally. It needs well regulated 35V via two separate lines. The droplet size is fixed, but at 40pl or 80pl quite small. I can fire at 4kHz, so a decent rasterisation should be possible. I am currently adding the head to my printer...
by Wonko
Wed May 25, 2016 8:26 pm
Forum: 3DP printing
Topic: Oasis 3DP printer
Replies: 41
Views: 54724

Re: Oasis 3DP printer

Oh, wow! That does look very sturdy. Looking great!
by Wonko
Mon May 23, 2016 8:44 pm
Forum: 3DP printing
Topic: Hacking the HP45
Replies: 609
Views: 410393

Re: Hacking the HP45

Looking great! You managed to squeeze things close together very nicely. I hope it'll work.

It's a longer drive (Düsseldorf), but I can offer you to use my pick'n'place and my oven if you plan to make more than one PCB.
by Wonko
Mon May 23, 2016 8:49 am
Forum: 3DP printing
Topic: Oasis 3DP printer
Replies: 41
Views: 54724

Re: Oasis 3DP printer

This looks really fantastic! I like the Y axis vertical design as it allows for an arbitrary number and size of ink cartridges. A horizontal design would be more limiting, you have plenty of height available, and the horizontal design could get in the way of the spreader. I also like the design of t...
by Wonko
Thu May 19, 2016 8:18 pm
Forum: 3DP printing
Topic: Hacking the HP45
Replies: 609
Views: 410393

Re: Hacking the HP45

If you want to get the pin count down, you could use a CPLD chip like the Altera 3000 to create an SPI interface to control all the pins. SPI can be connected to many CPUs via hardware SPI interfaces or with the Arduino Due even via DMA, reaching 1Mbits per seconds easily, and 8Mbits with some preca...
by Wonko
Wed May 18, 2016 7:49 pm
Forum: 3DP printing
Topic: Hacking the HP45
Replies: 609
Views: 410393

Re: Hacking the HP45

You can save yourself at least four chips. There are source drivers out there with serial input. Simply clock in the first bit, then shift, latch, shift, latch, etc. . This one is 8 bits with also 500mA, but i recall that there are 10, 14 and even 64 bits available. http://ww1.microchip.com/download...
by Wonko
Sun May 15, 2016 8:26 pm
Forum: 3DP printing
Topic: Hacking the Xaar 128 printhead
Replies: 320
Views: 191681

Re: Hacking the Xaar 128 printhead

The nozzles were clogged from the solvent ink that I was using. I bought an ultrasonic cleaner yesterday which works miracles. I also ordered some UV curing ink from China to try exactly that. Next week's goal will be to mount the head in an XYZ-axis machine so I can print layers. UV ink s perfect f...
by Wonko
Sun May 15, 2016 2:21 pm
Forum: 3DP printing
Topic: Hacking the Xaar 128 printhead
Replies: 320
Views: 191681

Re: Hacking the Xaar 128 printhead

Funny to see how similar our progress is recently. I managed to get patterns printed and also to test all nozzles. Here is a little video:



https://youtu.be/dnBx0aCWNms
by Wonko
Sun May 15, 2016 2:16 pm
Forum: 3DP printing
Topic: Hacking the HP45
Replies: 609
Views: 410393

Re: Hacking the HP45

Amazing work. Great fun to follow. Keeping fingers crossed for all further findings.
by Wonko
Tue May 10, 2016 9:54 pm
Forum: 3DP printing
Topic: Hacking the HP45
Replies: 609
Views: 410393

Re: Hacking the HP45

That looks absolutely fantastic!