Search found 8 matches

by ravng
Thu Aug 13, 2015 12:40 am
Forum: Using the LitePlacer
Topic: Problem with vacuum
Replies: 3
Views: 3362

Re: Problem with vacuum

I didn't have any suitable replacement here, but I had some 12V relays. So I put together a small circuit to drive the relay from the tinyg and control the solenoid that way, it worked out great.

I did a test assembly of a card now and it works pretty good, still needs some tuning.
by ravng
Sun Aug 02, 2015 10:32 pm
Forum: Building the LitePlacer
Topic: My building Experiance.
Replies: 16
Views: 13018

Re: My building Experiance.

The FET for the vacuum pump is stuck close. It's not fully closed so the pump just idles away then "rev's" up when the fet gets powered. I will replace it soon but for now it still works as needed. I have the same issue with both the vacuum pump and the solenoid. When I measure the voltag...
by ravng
Sun Aug 02, 2015 8:29 pm
Forum: Using the LitePlacer
Topic: Problem with vacuum
Replies: 3
Views: 3362

Problem with vacuum

Hi. So I have a problem after building the machine. When I run pickup the vacum is turned on part picked up, but it never deactivates the solenoid. When measuring the voltage across the solenoid pins it's 24 volt when activated but when deactivated it measures 8 volt??? Any suggestions, I guess it's...
by ravng
Sat Aug 01, 2015 12:04 pm
Forum: Building the LitePlacer
Topic: I did it
Replies: 2
Views: 3131

I did it

The kit was brilliant! Everything fitted and instructions where good. It seems like I had a temporary case of color blindness, since I manage to swith around n.o and n.c wires on the needle pickup limit switch. This produced very strange results when trying to home the Z axis (would home first time,...
by ravng
Thu Jul 30, 2015 9:12 am
Forum: Ideas and Feature Requests
Topic: Trays and Jiggs
Replies: 2
Views: 3495

Re: Trays and Jiggs

Im kind of new to 3d printing, and you were correct, it was impossible to get the interlocking feature tight enough. So I ended up printing a holder with the different parts I needed. I also use different atmegas on my cards, and they come on trays. So I made a track for single ic's with correct spa...
by ravng
Thu Jul 23, 2015 3:04 pm
Forum: Ideas and Feature Requests
Topic: Trays and Jiggs
Replies: 2
Views: 3495

Trays and Jiggs

So I have just recently ordered the Liteplacer, but I think I have the correct understanding of it's operation. I have been using a manual low cost pick&place machine for a long time and I 3d printed some trays that holds the smd tape in place for easier picking up with the needle. There is noth...
by ravng
Wed Jul 22, 2015 8:37 am
Forum: Ideas and Feature Requests
Topic: Re-initialisation
Replies: 5
Views: 5488

Re: Re-initialisation

The workflow danmcb is visualising is exactly what I am looking for. We make very small batches of compact pcbs on-demand for use in internal systems (a few different designs, and always some time between each build so that I can't make it "from memory"). Today workflow is that pcbs are de...
by ravng
Sat Jul 18, 2015 1:59 pm
Forum: Pre-Sales Questions
Topic: Placement of integrated circuits
Replies: 39
Views: 46828

Re: Placement of integrated circuits

Just order a kit for myself, and see support for this cheap trays as a great advantage.
Most of the IC's I get is delivered on this kind of trays anyways.