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Breadboard and Schematic Wiring help

November 9, 2017, 12:40 pm
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Hi

I just had a look at the .fzz sketch:

  • In the schematic view there are in many places several lines on top of each other, re-doing some connections a few times (e.g. between C1 and Q1), making connections where one wouldn't expect ones (e.g. the base of Q2 is connected to pin1 of C2, and pin 2 of R2 is connected to pin 2 of R3), and not making other connections that should be there (pin 2 of C2 is not actually connected to Q2).
  • In the breadboard view the right pins of the capacitors don't actually have contact to the hole in the breadboard. I don't know how that happened, if I move them up one hole and down again then they do have contact.
  • Not all of the wiring on the breadboard really makes sense. (What is the purpose of the wire between the lower pins of R2 and R3?)

My suggestion is to remove all the wires in the schematic view, clean up the breadboard view (also make sure that no component has legs marked in red), and then re-do the schematic view.

Please ask again if you have further questions.

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WaveShare 1.3 inch OLED with SH1106

November 9, 2017, 1:27 pm
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The BB view doesn't have to be perfect size wise, just if it fits into a BB the pins have to be 0.100".

It might be and idea if you are making parts off samples is to buy a vernier caliper.

If you want holes without any copper, you put a circle with zero stroke in the copper group. Also put a duplicate circle in silkscreen so you can actually see it.

I think the copper0 is because you used path instead of circle. I duplicate the path circle I have drawn and it usually becomes a circle, then I delete the original drawn one.

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WaveShare 1.3 inch OLED with SH1106

November 9, 2017, 3:15 pm
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I used the pins from the part that I used as template, so they should be fine. In the BB view the pins do match up with the breadboard, and the PCB pins also look fine. (If not then you'll hear from me when my PCBs arrive.)

Do I understand you correct, that I can add mounting holes into the PCB description by having circles with zero stroke in the copper group? Will they be marked as "plated though hole" in the Gerber files?
But then if I would want to have display but no mounting holes in the PCB, then I'd have to have different PCB descriptions, correct?

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Mysterious Gerber line

November 9, 2017, 3:17 pm
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Can anyone see why this part has a mysterious Gerber line running down one side. I pulled the silk part out of a vector PDF, so I don't know if that did something.

TE - 6437288-2 - 4 Row 34 Way.fzpz (20.9 KB)

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WaveShare 1.3 inch OLED with SH1106

November 9, 2017, 3:24 pm
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Yeah I noticed it fit the BB.

I don't think they are plated, just plain holes. You can dissect other parts in the bins with plain holes, which is how I found out, and it might tell you more.

Yeah it would have to be 2 parts, which is not hard because you just delete some holes in the svg.

Always Gerber view it before production or print it out, because it stops mistakes. It saved me a mistake when I realised I didn't have actual mounting holes, even thought there was circles in the picture. I use free Gerbv.

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WaveShare 1.3 inch OLED with SH1106

November 9, 2017, 5:11 pm
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Yes. If you make a circle of the diameter you desire but with stroke-width 0 and name it nonconn (I use nonconn1 nonconn2, etc as Inkscape doesn't like duplicate names and Fritzing may not either) in the copper layer with the pads then it will show up in the gerber drill file but not on any of the copper layers and you will get a non plated through hole. If you make a typo and call it noconn1 (speaking from experience :slight_smile: ) you will get copper pads as well so the nonconn is important.

edit: I expect your holes are too small. The gerber says they are .030in, IC pins are .035in and .1 pins (which I expect is what you want) are .038in. There is also an existing part (although it is much the same as yours) found via a google search on "fritzing part waveshare 1.3 oled" (which is the place to start before making a new part usually). A search on "waveshare 1.3 oled mechanical drawing" turns up a site which has a mechanical drawing (although not a very good one) that may be your device with dimensions for both the pin positions and mounting holes.

Peter

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Mysterious Gerber line

November 9, 2017, 5:44 pm
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Repeat after me: "transforms are evil and I won't allow them in my parts" :slight_smile: . You have been bit by a transform it looks like. I manually (because deep ungroup did not remove the transforms!) ungrouped your pcb to get rid of all the transforms and then regrouped it and now the stray line appears to be gone.

TE - 6437288-2 - 4 Row 34 Way_fixed.fzpz (22.9 KB)

Peter

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Share your custom made parts here

November 9, 2017, 7:31 pm
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@Steelgoose By chance, do you have a couple of 10 pin picoblade connectors in your bucket?

I'm not sure it is a picoblade connector, but is is 10 pin connector at a right angle. The is attached to a ribbon.

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Share your custom made parts here

November 9, 2017, 7:46 pm
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While I'm not SteelGoose there are picoblade connectors in core (not 10 pin that I can see though) so making one shouldn't be a big deal. What is the pin spacing and what does it connect to (if its for an lcd it may be a ffc connector). I'm assuming smd because most of the fine pitch ones are.

Peter

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Share your custom made parts here

November 9, 2017, 8:06 pm
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Thanks Peter, It is for a 5 button board for an LCD. It connects to a HDMI driver board via a ribbon cable. I can attach a photo if you'd like?

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Share your custom made parts here

November 9, 2017, 8:12 pm
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Have you got a part number for the board? That would probably tell us what the connector is as there are several types of ribbon cable around from standard .1in spacing, 2mm, I think 1.27in and ffc at .5mm and probably others I don't know. We would need to know which one it is to get it accurate on pcb.

Peter

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Share your custom made parts here

November 9, 2017, 8:17 pm
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The board number is PCB800023. The pdf I have shows two of the connectors, but this board only has one.

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Share your custom made parts here

November 9, 2017, 8:34 pm
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The keyboard attached to one of these?

If so I suspect you are correct it may be a picoblade connector with cables rather than ribbon cable and looks to be on .1 centers. They specify the lcd ribbon cable connector but not (that I can see) the keyboard one. If you measure the connector across the 10 pins is in 1 inch (which would indicate .1 spacing)?

Peter

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Share your custom made parts here

November 9, 2017, 8:43 pm
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yes, the one on page 13, #2109. 5" Touch. Has the grey looking ribbon cable.

I will have a better look at it tomorrow, with some magnification.

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Share your custom made parts here

November 9, 2017, 8:46 pm
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If you have a .1 header you could compare it to the connector and see if they match up.
What I'm looking for is the spacing between pins (although really I'd like to know what the actual connector is so we get the correct footprint).

edit: Actually assuming you want to make more of these, you will in fact have to figure out what the connector part number is so you know what connector to order to mate with the ones on the board. So look for a part number or a manufacturer's logo on the connector is probably your best bet. I can't see anything that says what the connector part number is anywhere.

Peter

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Mysterious Gerber line

November 9, 2017, 8:50 pm
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Yay. I don't really know how I'm adding the transforms, so I don't really know how to prevent it.

Did you go to all the trouble of naming all the connectors. I can't get it to auto assign pads when I put the svg in FZ, and since it will assign to any node at a high level I stopped naming them and just assign select them in FZ.

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Mysterious Gerber line

November 9, 2017, 9:15 pm
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Nope all I did was load the pcb svg in Inkscape, ungroup everything to get rid of all the translates then regroup the connectors in to copper1/copper0 and then silkscreen. Translates seem to occur when you move things that are part of a group. In theory extensions->arrange->deep Ungroup does the same thing, but, at least in this case, it ungrouped fine but didn't remove the translates and manually doing it with shift-cntrl-g did remove the translates which is annoying :slight_smile: . Connector names where left as is. I think the problem is that Fritzing didn't understand one of the translates in silkscreen and rendered one of the lines much larger and in a different place than it should have.

Peter

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Mysterious Gerber line

November 9, 2017, 9:23 pm
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I forgot how to do your Deep Ungroup hint and just node selected them individually off the PDF.

That's weird. I checked my original svg and the they are plain circles, yet in the one you posted they are connector0pin. Must be FZ auto after you assign the pins in FZ Edit

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Mysterious Gerber line

November 9, 2017, 9:33 pm
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I'd guess so, because the fzpz you posted has the correct connector names in it when unzipped with 7zip and I didn't export it from Fritzing, just modifed the svg, then used 7zip to rezip the fzpz file and loaded the new part in to Frtizing to check it was correct.

Peter

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Mysterious Gerber line

November 10, 2017, 2:54 am
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Well now I know how to name the pads without all that tedious copy and paste.:relaxed:

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