Search found 34 matches

by Philipp
Mon Feb 26, 2018 2:52 pm
Forum: 3DP printing
Topic: Hacking the Xaar 128 printhead
Replies: 287
Views: 131401

Re: Hacking the Xaar 128 printhead

Hello, guys, I managed to reduce the CLK signal to 1MHz by increasing "OCR1A = 11; //7;" from 7 to 11. When I look at SCK, the frequency is much higher than 1.4 MHz. Is that admissible? TCCR1A = _BV (COM1A0); // toggle OC1A on compare match OCR1A = 11; //7; // top value for counter OCR1A = Pin11 // ...
by Philipp
Sun Feb 25, 2018 7:00 pm
Forum: 3DP printing
Topic: Hacking the Xaar 128 printhead
Replies: 287
Views: 131401

Re: Hacking the Xaar 128 printhead

Hello, guys,
My print head is still doing the same nonsense.
Today I finally had the opportunity to attach an oscilloscope to the CLK signal.
The signal has 1.4MHz, I guess this is a source of error.
Tomorrow I'd like to start a new experiment with a different frequency.
regards
Philipp
by Philipp
Wed Jan 24, 2018 12:22 pm
Forum: 3DP printing
Topic: Hacking the Xaar 128 printhead
Replies: 287
Views: 131401

Re: Hacking the Xaar 128 printhead

Hello, I have now observed my error many program cycles. Sometimes the upper half of the nozzles work, sometimes all nozzles work and then again only the lower half of the nozzles. And sometimes no nozzles work. I can hear well whether the piezzos are working or not. I have the impression as if the ...
by Philipp
Fri Jan 19, 2018 5:22 pm
Forum: 3DP printing
Topic: Hacking the Xaar 128 printhead
Replies: 287
Views: 131401

Re: Hacking the Xaar 128 printhead

About the adapter: You can find this one on eBay and other online sources to convert the Xaar 128 header to 16p IDS cable. http://i.ebayimg.com/images/g/PmUAAOSwBLlVE7hL/s-l1600.jpg Hello everybody, I also have such an adapter. When measuring the pinout I noticed that the signals MISO and READY are...
by Philipp
Tue Mar 28, 2017 11:46 am
Forum: 3DP printing
Topic: Hacking the Xaar 128 printhead
Replies: 287
Views: 131401

Re: Hacking the Xaar 128 printhead

Hi Guys,
Is there more experience with water?
The data sheets of XAAR are unfortunately contradictory.
Many Thanks
Philipp
by Philipp
Sat Jan 28, 2017 7:25 pm
Forum: 3DP printing
Topic: Hacking the HP45
Replies: 523
Views: 300245

Re: Hacking the HP45

Hello dragonator, I got today the first drops from the printhead, thanks to the support of my friend. We have built an adapter board, with which we can put the teensy directly on to the printhead controller. The board also has a voltage regulator for the power supply of the Teensys. So it is very co...
by Philipp
Sun Jan 08, 2017 11:35 am
Forum: 3DP printing
Topic: Hacking the HP45
Replies: 523
Views: 300245

Re: Hacking the HP45

Hello Dragonator, I am just stuck at put the system into operation. I'm still waiting for the production of an adapter board that connects the teensy to the controller board. The orientation of the pogopins to the print head is very difficult. I also designed a template for the pogo contacts. Howeve...
by Philipp
Fri Jan 06, 2017 4:19 pm
Forum: 3DP printing
Topic: Hacking the HP45
Replies: 523
Views: 300245

Re: Hacking the HP45

Hallo,
I would also like to order 4 pieces
Philipp
by Philipp
Thu Jan 05, 2017 9:55 am
Forum: 3DP printing
Topic: Hacking the HP45
Replies: 523
Views: 300245

Re: Hacking the HP45

Hello,
After what they wrote to me was to realize that they had no idea of the electronics, the figure in the alibaba display seems to be only an example for Pogopins.
Best wishes
Philipp
by Philipp
Tue Jan 03, 2017 10:50 am
Forum: 3DP printing
Topic: Hacking the HP45
Replies: 523
Views: 300245

Re: Hacking the HP45

Happy New Year to all of you, I tried to contact the chinese provider, which unfortunately failed. They did not understand my questions regarding the function of the components or the connections. Communication was near impossible. Therefore, I have removed from this solution. It is easier to get in...