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RV Hardware / Re: Samsung feeder interface
« Last post by Mike on February 26, 2021, 12:50:17 AM »
I've only once ever had this issue, like you it was with 0603 LEDs. The problem was that they came on very thin tape. This was on a crazy-urgent job where I had to place about 10K LEDs in a day or so.
I tried a few things, but the most effective was to use a piece cut from an old stainless stencil which had a roughly LED-shaped aperture to form a window, keeping the tape between the peel-off point and pick position covered, so the LED only became uncovered when it moved to the pick position. It also helped keep the tape held down. Wasn't perfect but got the job done.
I have also considered looking at alternate feeders but never quite got round to it.
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RV Hardware / Re: Samsung feeder interface
« Last post by sheaton on February 25, 2021, 11:54:21 PM »
Feeder comms info is here in case you have not seen it:

http://electricstuff.co.uk/forum/index.php?topic=237.0

I've done some simple tests with my old pnp machine (Mechatronika M10) fitted with one lane using a Dima Optimat feeder, using a optical sensor (RPR-220) to detect the pick head and then advance the tape by 1, 2 or 3 steps for 4, 8, or 12mm taps.  A stepper motor presses down on the top lever which advances the tape and operates the take up spool simultaneously.

If you plan on decoding the incoming RS232 I would think you could fairly easily operate any stepper motors, solenoids, etc required for any type of feeder you can get hold of.  The height and physical envelope is likely to be the limiting factor.

Steve.
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RV Hardware / Re: Samsung feeder interface
« Last post by Gopher on February 25, 2021, 05:10:16 PM »
Pretty sure the control interface for the feeders has already been reverse engineered unless the new driver boards used cloned software...

On low end machines, clone Yamaha pneumatic feeders seem the most popular and cheapest, pretty sure they work using electronically activated valves in the mounting rack (which can be found on Ali). The height of any alternative feeder might mean you need to tweak other aspects of the machine or put it in a new enclosure, the standard ones are quite diminutive in that regard. Another option might be feeders for TWS Qwadras (also banks) if you can find them or Dima (I've seen them on eBay) which are a tiny little thing because they don't include any reel holder in the feeder. The NoedenS1/Tronstol A1 from China also has small electronic feeders which I think cost about the same as a Samsung clone. What you certainly don't want is Essemtec CLM, you could buy the machine for the cost of a refurbished 10 lane magazine.

From memory (its been almost 10 years) there are 2 problems with plastic tape - its thin so not exactly clamped down by the top plate or gripped well by those dastardly rubber drive bands & the single pin drives from quite far back.
 It is probably possible with a 3d printer or other ingenuity to make a top plate that can in some way push the tape down to the bottom of the groove but the feeders a re fiddly enough to load already and that probably won't help. I don't know how feasible it would be to add more pins to the tape drive mechanism...
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RV Hardware / Samsung feeder interface
« Last post by trev on February 25, 2021, 01:46:25 PM »
Hi, just thinking out loud. The biggest issue I have with the RV is the feeder handling plastic tape. With 0603 leds the feeder vibrates and the parts literally filp upside down. Sometimes the tape lifts and the pin misses the holes. This is with a grey feeder.

I was wondering how difficult it might be to interface samsung/clone electronic feeders with the RV. It almost acts as a win win situation. Better feeder support and then if the time comes to upgrade the machine the feeders most likely will work with a new machine or can be sold on. 

One thought was to take the electronics board out of a feeder and use the signal from the solenoid output as a trigger to the electronic feeders? I was thinking the RS485 protocol probably is trivial though to back engineer.

Anyone got any thoughts on this or maybe there are ways to sort out the support of plastic tape with the current feeders. I find them a pain really.

Trev
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RV Software / Re: Custom software for RV1S/RV4S
« Last post by sheaton on February 23, 2021, 09:26:26 PM »
Perhaps an email to CSsupport@cyberoptics.com ?

Steve.
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RV Hardware / Re: Problem Homing
« Last post by phonoplug on February 22, 2021, 05:25:40 PM »
This is what it looks like on my machine. Excuse the dust.... it does actually get used quite a lot!
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RV Hardware / Re: Power supply issues
« Last post by trev on February 22, 2021, 04:33:26 PM »
yeah, but I thought they were cheaper than that before. Someone gave me a couple and I have not used them yet but I thought they were half the price. Maybe I am mistaken. At that price they are close to the price of a new supply from Meanwell.

Trev
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RV Hardware / Re: Power supply issues
« Last post by alanambrose on February 22, 2021, 01:55:45 PM »
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RV Hardware / Re: Problem Homing
« Last post by alanambrose on February 22, 2021, 01:53:06 PM »
Thanks for properly documenting that Steve. Every bit increases the value of the archive to us RV-people :)

Alan
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