Ytec3D Forum

Hi, I finally managed to fire this cartridge with my L6452 driver that I wrote above. The missing horizontal lines aren't clogged nozzles but a short on address 21/22 that I'll repair later. If I will redesign the PCB, I will rearrange primitive outputs. Since odd and even ones are on different rows...

Of course. This is a 50-50% hobby-professional project and I don't have much time, otherwise it would have been finished. But I can share it here so I'll let you know about my conclusions.

Hi math,

I posted a few posts ago the schematic. The only mistake is the 19V output of LT1930 should go to VStepUp and Vr to 12V. If you read the schematic you'll understand. I made a simple firmware to test the pins output, no real test with a cartridge yet.

Hi,

I started testing my design using ST L6452 with the schematic I show few post ago. Good news, the LT1930 outputs 19V for Vboost and all voltages are correct. The air is clear, no smoke released . So I can start coding the ATMEGA64.

Thank you, David, for your posts here. You determined us to research into using this ST chip and I appreciate this. Your advices are very appreciated.

Regarding L6452, I will tie ADCK and ONENABLE to 5V and CONVSTART, CRDATA, CRLOCK and CRLATCH to GND. ADCK should be tied to VCC because it's active on falling edge. I don't think it's important but I don't need the ADC control logic to be in any kind of initialising anything. Still, we would apprec...

Thanks. You're right, inputs should ALWAYS be tied to a certain level.
Did you use its internal ADC?

Hi all, I've attached my driver design. I still have some work to do on the schematic but i'm close to my final design though. Since I don't know how to use the internal stepup part of the L6452, I used LT1930 for VstepUP. It's enough for the low current input of the L6452. I found it difficult to m...

After playing with Xaar128-80, I reached some conclusions. There are several advantages and disadvantages compared to thermal printheads. Despite the myth that piezo printhead runs on a very wide range of fluind compared with a TIJ head, it won't run on water. I received an answer from the Xaar (man...

David, how do you address 22 addr lines? You use both channels A and B and switch between channels to drive all nozzles? The switch is fast enough?
We'd all appreciate if you show how you connected the IC to the printhead.