DIY DTG - Build your own Digital T-Shirt Printer

Search found 45 matches

by MetalGuru
Thu Apr 20, 2017 12:40 pm
Forum: DIY Pretreat Machine
Topic: OpenDTG Pretreater Control Board
Replies: 61
Views: 4241

Re: OpenDTG Pretreater Control Board

I have been using my new pretreat machine in full production for past couple days.  WOW! My life just got better lol. Even pretreat and very consistant every spray. My machine will do fine for now, but after building one, I have some things that I might change. ⋅ I would use a 1/4 tube fro...
by MetalGuru
Thu Apr 13, 2017 8:54 pm
Forum: DIY Pretreat Machine
Topic: OpenDTG Pretreater Control Board
Replies: 61
Views: 4241

Re: OpenDTG Pretreater Control Board

I cut and pasted this part under the length part in case 5.  speedval = analogRead(speedpot);   speedval = map(speedval, 0, 1023, 1050, 50); // was 1250 and 450 The motor/nozzle now moves very fast! Thank you! I would probably recommend that as the best way to have the code. Dont think there is much...
by MetalGuru
Thu Apr 13, 2017 9:39 am
Forum: DIY Pretreat Machine
Topic: OpenDTG Pretreater Control Board
Replies: 61
Views: 4241

Re: OpenDTG Pretreater Control Board

Great!

I will try this tonight.

At current settings/max speed, I am getting about 20g of pretreat. I would like to get it to a minimum of 12-15g hopefully.
by MetalGuru
Wed Apr 12, 2017 10:15 pm
Forum: DIY Pretreat Machine
Topic: OpenDTG Pretreater Control Board
Replies: 61
Views: 4241

Re: OpenDTG Pretreater Control Board

Thank you for the info! So I set 50 to 10 and it did speed up the motor a little bit, however it is still not fast enough. I am running a nema 17 using 12v powersupply to the Pretreat board. I also experimented with changing the ejectspeed on the settings tab. I changed it from 200 to 80. The motor ...
by MetalGuru
Tue Apr 11, 2017 10:38 am
Forum: DIY Pretreat Machine
Topic: OpenDTG Pretreater Control Board
Replies: 61
Views: 4241

Re: OpenDTG Pretreater Control Board

What is the code I need to change to increase the max speed of the motor?

Thank you!
by MetalGuru
Sat Apr 08, 2017 4:18 pm
Forum: DIY Pretreat Machine
Topic: OpenDTG Pretreater Control Board
Replies: 61
Views: 4241

Re: OpenDTG Pretreater Control Board

My new nozzle came in, and I am now getting a great even spray! I am using the 95015evs now. It is even across the whole spray area @ 60PSI. The reason it was uneven on the edges previously was because  I was using the wrong type of nozzle tip. I am very happy now. I got the electronics box from Ama...
by MetalGuru
Tue Mar 28, 2017 3:59 pm
Forum: DIY Pretreat Machine
Topic: OpenDTG Pretreater Control Board
Replies: 61
Views: 4241

Re: OpenDTG Pretreater Control Board

The solenoid works well. Not sure how long it will last, but it does work.

The assembly does drip a little bit after shutoff sometimes. Not enough for me to worry about it tho.
by MetalGuru
Tue Mar 28, 2017 3:04 pm
Forum: DIY Pretreat Machine
Topic: OpenDTG Pretreater Control Board
Replies: 61
Views: 4241

Re: OpenDTG Pretreater Control Board

One recommendation I would add is to turn off the motor when it is resting at the front.

Similar to the DTG code.

Not sure if I could just copy that part from the dtg code, or if there would be a more specific way to do it.
by MetalGuru
Tue Mar 28, 2017 3:01 pm
Forum: DIY Pretreat Machine
Topic: OpenDTG Pretreater Control Board
Replies: 61
Views: 4241

Re: OpenDTG Pretreater Control Board

Here are some pictures of the pretreat machine so far. Still in prototype stage for looks, but it works well. Assembled it with openbuild parts I had lying around. May need to change the pump I have, not sure tho. I have a 60psi pump and the spray pattern is dense in the middle and lighter on the ed...
by MetalGuru
Mon Mar 27, 2017 7:20 pm
Forum: Arduino Open Source DIY DTG
Topic: OpenDtg DIY DTG with Motor Shield Question
Replies: 7
Views: 503

Re: OpenDtg DIY DTG with Motor Shield Question

Once you go over 32,767 that is the limit for the integer. You would need to change the code to an unsigned int so you can go up to 65,535 So maybe it's acting goofy because of that. Thank you! I changed all the integer labels to long-except one that is set to 0 int changed to long then added an L ...