Search found 77 matches
- Tue Nov 28, 2017 5:19 am
- Forum: 3DP printing
- Topic: Hacking the HP45
- Replies: 757
- Views: 2907120
Re: Hacking the HP45
Thanks, BuddyButterfly! It's not a kicad project, I made it with Orcad. I can't sell boards because I ordered only 5 pieces. Meanwhile I changed the project, I use Arduino due to control the firing chip. Atmega64 was way too slow, it looses so much time for bit swaping and arranging data for address...
- Mon Oct 02, 2017 11:50 am
- Forum: 3DP printing
- Topic: Hacking the HP45
- Replies: 757
- Views: 2907120
Re: Hacking the HP45
The code is C, ATMega64. Regarding address select, I voted for direct demultiplexing, not UP/Down counter. That's because I thought this is more straightforward and, in the future, I could decide the address order for myself. You're right about the pin count and the availability. Still, you can redu...
- Mon Oct 02, 2017 8:41 am
- Forum: 3DP printing
- Topic: Hacking the HP45
- Replies: 757
- Views: 2907120
Re: Hacking the HP45
Hi, This is my code for firing L6452. Please look how simple is to use this chip: void jet(unsigned char address, unsigned int pdata,unsigned char pwr) //pwr = 0...10 ejecting power { unsigned char tmp; tmp=pdata%256; //-- set SPI primitive data, 16 bits SPDR=tmp; while(!(SPSR&(1<<7))) {;} //SPI...
- Fri Sep 29, 2017 7:54 pm
- Forum: 3DP printing
- Topic: Hacking the HP45
- Replies: 757
- Views: 2907120
Re: Hacking the HP45
Hi Mahsa, I produce a 1-bit bitmap with ImagePrinterPro or some Photoshop. I made a C program that takes 16 bytes from the first bitmap row then 16 bytes from the second row and so on to build a vertical slice for print. Please check bitmap format for reference. Then I send the array ( less than 327...
- Thu Sep 28, 2017 4:11 am
- Forum: 3DP printing
- Topic: Hacking the HP45
- Replies: 757
- Views: 2907120
Re: Hacking the HP45
Looks very nice with all components added! Teensy is a powerful device. Though I think it would have been much easier to use L6452 and Teensy.
I corrected my small mistakes into my schematic and I'll show it to you soon.I hardly can wait to see your module drawing with ink!
I corrected my small mistakes into my schematic and I'll show it to you soon.I hardly can wait to see your module drawing with ink!
- Thu Sep 14, 2017 3:26 pm
- Forum: 3DP printing
- Topic: Hacking the HP45
- Replies: 757
- Views: 2907120
Re: Hacking the HP45
Hi, I made it work, now I can print graphics with HP45. Here is a sample printed on glass and another on paper. However, the output is a bit faint, althoug all nozzles are firing. I tried with 2.0us primitive time @12.0V, I'm afraid to go further. Should I fire the same pattern more than once for de...
- Fri Sep 08, 2017 8:06 pm
- Forum: 3DP printing
- Topic: Hacking the Xaar 128 printhead
- Replies: 365
- Views: 1329671
Re: Hacking the Xaar 128 printhead
I was also glad because I read piezo heads can handle almost any fluid -which is not the case with this xaar. I had a head that I destroyed after a short test with water. I read the documentation again and they say it runs on aqueous inks. By the way, there's no direct reference about supported inks...
- Wed Aug 30, 2017 8:21 pm
- Forum: 3DP printing
- Topic: Hacking the Xaar 128 printhead
- Replies: 365
- Views: 1329671
Re: Hacking the Xaar 128 printhead
Where can I find a proper capping for this head? And not too expensive...
- Mon Aug 21, 2017 5:40 pm
- Forum: 3DP printing
- Topic: Hacking the HP45
- Replies: 757
- Views: 2907120
Re: Hacking the HP45
What's the maximum fire rate you can achieve?
- Sat Aug 19, 2017 5:12 am
- Forum: 3DP printing
- Topic: Hacking the HP45
- Replies: 757
- Views: 2907120
Re: Hacking the HP45
Hi, Please look back in my previous posts for the schematic and my observations. Another thing, I bought an old HP printer and I took the printhead connector and the rubber capping system to seal the printhead. The microcontroller is slow, because I loose so many time rearranging bits for firing cyc...