Ytec3D Forum

That is amazing to see. Are the few missing nozzles broken or is something different happening. Both printheads are great for different reasons. With a working Xaar head you can do different things than with a working HP45. HP45 is cheaper, more accurate and has more nozzles but only deals with vola...

And a very quick followup. The capacitor is now 1uF or 10x as small. I also patched some small things in the firmware. 99 now means a counter reaching it's limit. The results are interesting to say the least. All nozzles that were broken as 0 before are still broke, but some are more broken than oth...

Testing nozzles was as difficult as I imagined, but after a few hours of messing around I got it to work. The basics of it works like this: I have an N-channel Mosfet (30N06L) that connects the ground of the printhead to the ground. This way I can divert the flow to a single 10uF capacitor. Attached...

And now for the last task of today. Schematics and firmware. I doubt that it will help anyone before I make it obsolete again, but I have the stuff anyway. The current schematic looks as follows. It is basically 5 TLC59213 drivers and an Arduino Mega 2560. The pins that connect to the drivers have b...

There is now a line buffer in the Firmware. This means that I can store more complicated shapes in the tiny memory of the Arduino Mega. I then went on to write a shape generator because I am not going to fill a 176-bit wide 150 bit long buffer by hand. I started of with a square generator. This is a...

This will be the first of several posts this weekend. I will post things when I have them, to keep sort of an experiment log. I have not got anything other than the HP45 on the list for this weekend, so I will be able to do quite much. If anyone want something specific tested, now is the time to ask...

Hello and welcome. You did indeed find this site on the right moment. I do have more inkjet (and by extension 3DP) related projects in the future with the HP45. I have seen about half a dozen functional 3DP printer designs. Some are bodges inkjet printers, some are full DIY 3DP printers the C6602A. ...

Time for a video. GWE-4okKDbk I rewrote the firmware so it is no longer triggering ALL nozzles, but it triggers nozzles from 1-300 in quick succession. I thought for a while that some nozzles were broken, but running the ALL nozzles code for a while properly started all nozzles. Almost all nozzles s...

Even more success. After the success of yesterday, I dug up an Arduino Mega to get the pin count. Connected all addresses and primitives to the Mega, wrote a piece of firmware that triggers all nozzles in the cascade, and tried it. It worked the first time. All nozzles (or at least all nozzles that ...

That would be really appreciated. I have talked with someone who also did some work on inkjet (someone working for Ultimaker) and I remember something about piezo not being able to print conductive fluids. I hope that distilled water and Isopropyl do not conduct so this can still work on binder jett...