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RV Hardware / Re: camera does not initialise properly on first boot
« Last post by trev on November 09, 2021, 10:38:59 AM »
Thanks, will try your sequence and see if that solves it.
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RV Hardware / Re: camera does not initialise properly on first boot
« Last post by Mike on November 06, 2021, 10:31:00 AM »
May be the same issue I've observed, where you get fine horizontal stripe offsets, i.e. each alternate line has a fixed offset. I'm pretty sure this is to do with interlacing on the camera, the image grabber picking the wrong pair of fields to make a frame.
I've found that being consistent in the way you power up fixes it 100% - PC power on, then RV power on a few secs later.

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RV Hardware / camera does not initialise properly on first boot
« Last post by trev on November 02, 2021, 03:42:37 PM »
Hi, most of the time when I load up RV Place the camera has some weird offset. A black band appears at the bottom. I believe this is related to the PC and wondering if it is a hardware or software issue. Maybe I installed the wrong camera driver? Has anyone experienced this issue?

I have attached an image showing the black band at the bottom. It does affect the position of placement.

Trev
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For Sale/Wanted, Suppliers / Re: Feeder clearout and other bits
« Last post by tonyt on October 04, 2021, 06:17:25 PM »
Hi Cubik
I ve only just seen your comment so I suppose I m too late but spare size 2 pick up nozzles would be useful to us and ideally a spare vac pump
Thanks
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RV Hardware / Re: Feeder controller board redesign
« Last post by Mike on September 23, 2021, 10:57:56 PM »
I am not sure why they felt the need to move the tape so quickly though.
For multiple feeds perhaps.
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RV Hardware / Re: Feeder controller board redesign
« Last post by trev on September 23, 2021, 10:29:18 PM »
I did a run of a few boards today and compared using a feeder with an old control board in it with one with my new design. I have to say, the old feeder is so fast. I am not sure why they felt the need to move the tape so quickly though. They have so much time between placements! Maybe when using merge moves or something and the feeder is right next to the camera, it needs to be. The speed can not help when winding the tape back though. I much prefer my new design.

I am going to build a few more boards up and convert some more feeders. I then have a big job to get done and this should really put the board through final testing.

Trev


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RV Hardware / Re: Feeder controller board redesign
« Last post by trev on September 22, 2021, 01:53:03 PM »
I have now done around 2000 placements with a feeder installed with the new controller design. It has not missed a beat and appears to be performing very very nicely. Lovely smooth movement means the components are always in the same position and I think this helps placement be that little bit more repeatable. Also being so quiet is fantastic.

I was not using lots of plastic tape due to the job I had to get done. It was mainly paper but there were 2 plastic tapes on the bank. They were quite thick, the one held a SOT23-5 and the other a 1210 inductor. The SOT23-5 moved very smoothly with not shaking in the tape. Position again was very repeatable.

What I did find out though is the reduced voltage for solenoid operation is because I did not fit the extra springs on the grey feeder. This style feeder has 2 sets of springs to help stop the pins sticking and I did experience a bit of pin sticking. When I checked a different feeder I found the solenoid voltage needed to be up at around 24V to work reliably due to the extra force of the springs. Still seems that 37-39V is quite high.

The other thing is that with higher voltage the solenoid does not like to be energised for long. With the original design moving the tape quickly, the solenoid was on for less time and this may have helped keep heat down. We this design design if the voltage is less this might balance out.

I have another mod to try to stop the pin hitting the plate that does not require any machining of the pins. If this works then I think I will have a final solution.

Finally I have attached a pic of the first hand soldered controller board built from PCBs I got made. Everything appears to be working as expected.


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RV Hardware / Re: Feeder controller board redesign
« Last post by Mike on September 13, 2021, 10:29:25 PM »
From memory ISTR the transformer has 2 windings in series - could it be as simple as just using one winding to reduce the voltage? I would think the stepper would be OK with the reduced voltage with speed ramping and the smoother control the Trinamic driver gives.
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RV Hardware / Re: Feeder controller board redesign
« Last post by trev on September 13, 2021, 11:51:22 AM »
This panel mount one looks interesting. It could be installed inside the RV power enclosure and then feed the cable so no external cable alterations would be required. Then you can adjust the voltage from the panel. Nice and tidy.

https://www.amazon.co.uk/Voltage-Regulator-Programmable-Adjustable-Converter/dp/B08P7PG7R5/ref=sr_1_37?dchild=1&keywords=adjustable+power+supply&qid=1631530107&s=electronics&sr=1-37

Anyone know if these blow up a lot?
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