Search found 434 matches

by dragonator
Thu Oct 03, 2019 6:14 pm
Forum: 3DP printing
Topic: Hacking cartridge HP 84/85
Replies: 148
Views: 37305

Re: Hacking cartridge HP 84/85

40 nanoseconds for a pin write is pretty fast. I can imagine it being too slow for you, but it is a good reference for me. For the port you will need to puzzle a little in the core.h: https://github.com/PaulStoffregen/cores/blob/master/teensy4/core_pins.h Teensy 4.0 is __IMXRT1062__. This is handy t...
by dragonator
Wed Oct 02, 2019 10:44 am
Forum: 3DP printing
Topic: Hacking cartridge HP 84/85
Replies: 148
Views: 37305

Re: Hacking cartridge HP 84/85

# define CORE_PIN0_BITMASK ( 1 << (CORE_PIN0_BIT)) This is not the command to set a pin. It is the programmer language that defines what bit is the teensy pin. Everything that has a #define in front of it is actually replaced by the compiler. In this case, if you type CORE_PIN0_BITMASK, the compile...
by dragonator
Sun Sep 29, 2019 9:17 am
Forum: 3DP printing
Topic: Generic powder machine controller
Replies: 19
Views: 2838

Re: Generic powder machine controller

That is one impressive looking board. I read that you have stepper motor drivers on there. Do you intend to use an existing motion driver or will you write one yourself. Does the motion run through the FPGA or the microcontroller.
by dragonator
Sun Sep 29, 2019 9:16 am
Forum: 3DP printing
Topic: Hacking cartridge HP 84/85
Replies: 148
Views: 37305

Re: Hacking cartridge HP 84/85

Sadly, I do not know how to write a whole port directly yet. I did dig a little on the forum and the pages, but came up empty. Teensy 4.0 is still rolling out, and not all libraries and functions are completed. I myself still miss the OctoWS2811 library for 4.0 that allows me to try it.
by dragonator
Tue Sep 24, 2019 4:58 pm
Forum: 3DP printing
Topic: Hacking the HP45
Replies: 538
Views: 315918

Re: Hacking the HP45

If you are manually triggering, you will need to open the mosfet. Testing it is somewhat complex, but what I usually do first to not have a printhead in and turning known pins high or low. I then measure the right pads to see if there is 12V compared to the ground pads. This is simpler without a con...
by dragonator
Fri Sep 06, 2019 11:53 am
Forum: 3DP printing
Topic: Hacking the HP45
Replies: 538
Views: 315918

Re: Hacking the HP45

I can provide the links to where I bought. Mouser is indeed American, but has no issue shipping to the Netherlands. The rest of Europe should also be fine I think: 4081: https://nl.mouser.com/ProductDetail/595-CD4081BM96 4017: https://nl.mouser.com/ProductDetail/Texas-Instruments/CD4017BM96?qs=sGAEp...
by dragonator
Tue Sep 03, 2019 10:58 am
Forum: 3DP printing
Topic: Hacking cartridge HP 84/85
Replies: 148
Views: 37305

Re: Hacking cartridge HP 84/85

dragonator wrote: ↑ Tue Sep 03, 2019 5:37 am In the Netherlands there are several resellers that carry them as well. I usually buy them there. have a page? https://www.antratek.nl/boards/arduino-compatible/teensy is one of the resellers where I buy that actually carries 4.0 already Hi, do you guys ...
by dragonator
Tue Sep 03, 2019 5:37 am
Forum: 3DP printing
Topic: Hacking cartridge HP 84/85
Replies: 148
Views: 37305

Re: Hacking cartridge HP 84/85

In the Netherlands there are several resellers that carry them as well. I usually buy them there.
by dragonator
Sun Sep 01, 2019 7:29 am
Forum: 3DP printing
Topic: Hacking cartridge HP 84/85
Replies: 148
Views: 37305

Re: Hacking cartridge HP 84/85

I'm wondering if the teensy 4.0, being so much faster, still makes DMA a requirement for faster printing with the HP45. Maybe the current firmware just becomes fast enough ? Not the right thread for a full discussion, but better, but probably not completely. The HP45 takes 1.8us to fire a single pu...
by dragonator
Fri Aug 30, 2019 7:25 am
Forum: 3DP printing
Topic: Hacking cartridge HP 84/85
Replies: 148
Views: 37305

Re: Hacking cartridge HP 84/85

I did see the 4.0, which made me very happy. However, for DMA it should indeed not make much of a difference, only the handling around DMA. I have a library to write a sequence to one or two ports over DMA for the Teensy 3.2. I hope to alter that to write to the HP84 in a few weeks. The library was ...