Search found 595 matches

by dragonator
Tue Oct 18, 2016 4:13 pm
Forum: 3DP printing
Topic: Hacking the HP45
Replies: 749
Views: 2890028

Re: Hacking the HP45

Looks good. Do that with 4 colors and you have a full color image. What did you write the program with? A small announcement. I am quickly reaching the point where I don't want to move the printhead by hand anymore. I am currently pushing through the last changes in the housing, gantry and initial s...
by dragonator
Tue Oct 18, 2016 5:40 am
Forum: 3DP printing
Topic: Hacking the HP45
Replies: 749
Views: 2890028

Re: Hacking the HP45

You did not hear me say that. A lot of printheads (especially bubblejets) really cannot control the size of their droplets. It is just a set size that is dictated by the mechanics of the printhead. If you have enough resolution (the HP45 should already have enough) you can alternate on and off in ce...
by dragonator
Mon Oct 17, 2016 5:47 pm
Forum: 3DP printing
Topic: Hacking the HP45
Replies: 749
Views: 2890028

Re: Hacking the HP45

Yes, right now every pixel is just one trigger of a nozzle. On another side note. Does anyone here know how ridiculously difficult it is to find the pin mapping of the Teensy 3.6 to all output pins right now. I spent the best part of 1 hour. 1 HOUR!!! scouring on the internet, not finding it. In the...
by dragonator
Mon Oct 17, 2016 4:21 pm
Forum: 3DP printing
Topic: Hacking the HP45
Replies: 749
Views: 2890028

Re: Hacking the HP45

The HP45 is not really that great at greyscale. You could still do it by alternating on and off, but at 600DPI you will see it at close range.
by dragonator
Sun Oct 16, 2016 6:13 pm
Forum: Props in progress
Topic: 3rd person camera
Replies: 0
Views: 73377

3rd person camera

Again not a prop, I really should rename this section. What I have for show and tell today is something fun, though a bit useless. It is a 3rd person camera. It is a way to see yourself in the 3rd person (someone standing 2m behind you). It consists of an FPV camera mounted on a stick on a backpack,...
by dragonator
Sun Oct 16, 2016 11:57 am
Forum: 3DP printing
Topic: Hacking the HP45
Replies: 749
Views: 2890028

Re: Hacking the HP45

Got a bit of work done today. I wrote a bit of software in my least favorite used program, processing. This because it is the best environment that requires no extra skill for me. What the program does is it imports an image, scales it to 150 by 150 pixels and converts it to bilevel. After that it c...
by dragonator
Fri Oct 14, 2016 5:50 am
Forum: 3DP printing
Topic: Hacking the HP45
Replies: 749
Views: 2890028

Re: Hacking the HP45

Because I press a button and 2/10th of a second later a set of numbers appears on my screen. Not really oscar worthy material. Anyway. I want to post the steps I want to do with this controller here. If you have an addition to the list, let me know. Streamline all functions a bit. Especially test no...
by dragonator
Thu Oct 13, 2016 7:30 pm
Forum: 3DP printing
Topic: Hacking the HP45
Replies: 749
Views: 2890028

Re: Hacking the HP45

I suspect about half is due to poor contact. I had this issue before with the breakout. I cannot test at the moment though. 25 were broken after my first round of testing where I did not have all addresses and primitives that weren't used pulled down. Also I was messing a lot with timing and got up ...
by dragonator
Thu Oct 13, 2016 6:43 pm
Forum: 3DP printing
Topic: Hacking the HP45
Replies: 749
Views: 2890028

Re: Hacking the HP45

An update with a piece of code. The "Test nozzle" function appears to be working. Current state? Something between 45 and 55 nozzles are broken. This can be poor contact, but the nozzles that were broken on page 9 of this forum are broken now, so I know the function is working again. That ...
by dragonator
Thu Oct 13, 2016 5:46 am
Forum: 3DP printing
Topic: Hacking the HP45
Replies: 749
Views: 2890028

Re: Hacking the HP45

3.6 (and 3.5 for that matter) is massive overkill. The only reason I wanted to use it so badly is because there is finally a Teensy with enough I/O. That is also the answer. There are plenty of pins to connect a teensy 3.5 or 3.6 to a controller and have pins to spare for SPI. Teensy has in the 50 I...