LitePlacer.com forums

Can I ask you one more favor? Could you post two pictures of the Juki nozzle (connector side) - one with nozzle pushed in (spring compressed) and one in "normal" state? I am curious how these babies work. In case Knas never got around to this... my nozzles and holder arrived today. Here a...

I do a lot of height-probing, using the z-max limit switch to detect the heights of various things. I'm sure this sounds obvious to people who aren't as stupid as me, but there is quite a bit of difference between the "z-position" where the needle tip touches the object and the "z-pos...

The same circuit also controls the pump in such a way that the pressure in the reservoirs is almost constant - within a small hysteresis window. ... But to be honest: It was much effort for little gain. If I build the pneumatic system again, I would limit myself to the vacuum reservoir only. I woul...

Very professional-looking, as usual :) reduction_piece.png Malte Curious, what's the "pressure" bottle for? Is this so that when the pickup solenoid cuts off the vacuum, it (or some other secondary solenoid) also cuts in a slight positive pressure? I considered doing this a while back to g...

FWIW, I have confirmed that you can daisy-chain the limit switches, thereby freeing up an additional five GPIO pins (although they have a weak pull-up, so they have to be either outputs or else inputs that are always strongly driven). Leave one limit switch (z-max in my case) wired as before. On eac...

For a stronger vacuum pump i was looking at: I just installed a new vacuum pump which I believe is the same thing ($15 including two-day shipping in the US: http://www.amazon.com/gp/product/B00DYA21PU). It is REALLY powerful. At least four times as strong as the liteplacer's default vacuum, as meas...

the coupler looks like a cheap version of Misumi part RTCN6-M5: http://us.misumi-ec.com/pdf/fa/2012/p2_1309.pdf Cosidering shipping cost from China, Misumi part (or similar distributor) might still be the cheaper option for many of us. Well I was already getting the hollow-shaft stepper from robotd...

Does that need to be metal or is a normal coca cola bottle strong enough ? I think plastic bottles might collapse under vacuum. I used a metal bottle - similar to the swissmade bottles by "Sigg". These happen to have a R3/4" thread for the cap - so you can easily fit a reduction piec...

WayOutWest: How fast do you think you could reliably run this process? Lets say I have 40 drawers each with 100 components in. Hrm, speed is not really a major goal for me, so I am not trying to push it. But I think you should expect it to be slow. Feeders are really really really fast which is why...

mpbrock wrote:i'm not sure why you wouldn't keep the components in the tape

To eliminate the complicated mechanism ("feeder") to peel back the film on the tape.... which the Liteplacer doesn't have anyways.