I started this as a separate thread to the poll because I think it’s just going to be me asking silly questions. @mliberty What’s the reason for copper on the corner holes? I presume it can’t be relied upon for an electrical connection between the chassis, fastener and panel because it has solder…

Hi @simonmerrett : Happy to help. You are one of the first people (other than me) to design a front panel. Your questions will help us improve the documentation and process for everyone! [image] simonmerrett: What’s the reason for copper on the corner holes? I presume it can’t be relied upon f…

Very helpful, thanks. I admit I have found the dimensions harder to generate layout from. Kicad bases footprints on a 0,0 coordinate and so the centre of the panel would be the easiest datum to work from. I’m fine with the calculator though!

The irony is that I did most of the mechanical design from the centerlines. The math is hopefully not too bad!

I think I have made some progress (had to pause for a barbecue!). I have made a JS110 symbol:[image] Pins 2 and 4 are not visible and are automatically connected to pins 1 and 5 respectively. I have also made the front panel as a single footprint, incorporating: PCB edge/outline in the Edge.Cuts…

[image] simonmerrett: On the back face of the banana jack front panel (Rev 6) that I have, you have put a silkscreen pair of solid lines on the edge of your lateral keepout. Do you want this replicated in the baseline Kicad footprint? A Kicad user is free to add or remove this locally, on each b…

[image] mliberty: my time is limited in checking until then Cool, I’m not trying to rush you - more like catch up on something I’ve been meaning to do for a while. I’ll be away next week too! Thanks for all your answers. Of course Gerbers are the answer! :roll_eyes: Simon

I have now added: The trace and via to the front side from Pin 3 The ground pours on front and back, respectively connected to the relevant pins I can’t seem to stop the ratsnest from thinking the via and Pin 3 smd pad aren’t connected - but I think they are (one to check on the Gerbers during QA…

Looking good! To support the full Joulescope current range (3A with 10A bursts) with minimal voltage drop, you will likely need to remove the thermals on pins 1, 2, 4, and 5. Thermals on the pin 3 via are fine since it is very high impedance. Thermals on the IN and OUT connectors are usually not …

Cool. Once we’re happy that things line up, I will remove the thermals (including the pin 3 via - there’s no need for one there!).

I just checked using Gerbv. The outline, corner hole, and light pipe all look good. I noticed a small difference with the soldermask for the 5x1 connector. I checked the Eagle design files, and the component centroid is 32.45 x 20.615 mm. The drawing says 32.45 x 20.61 (close enough). [image] …

Front panel dimensions

Technical Discussion

mliberty August 13, 2019, 9:38pm 17

Done: KiCad Joulescope front panel baseline design now available

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Front panel dimensions

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