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TOPIC: KiCad Schematics pedalSHIELD.

KiCad Schematics pedalSHIELD. 11 months 4 weeks ago #24

  • JR
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pedalSHIELD was developed using KiCAD.

KiCad is an EDA software tool for the creation of professional schematics and PCBs. KiCad runs on Windows, Linux and Apple OS X and is released under the open-source GNU GPL v2 free of charge.

The schematic files are public an open:

File Attachment:

File Name: PedalShield-rev.E-nativefiles.zip
File Size: 64 KB


Full size pedalSHIELD schematic image link

pedalshield-schematic.png
keep it simple
Last Edit: 1 month 1 week ago by JR.
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KiCad Schematics pedalSHIELD. 10 months 3 days ago #69

  • wose
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Hi,

thanks for the pedalSHIELD. I'm in the process of extending it. I noticed that the schematics differ from the screenshot and the BOM you made public.
In the KiCad files are 2 more caps (C16,C17 100n) between +5 and GND, -5 and GND. The values of C2, C5, C8, C9 and C12 are 47p, the screenshot and the BOM lists these as 270p.

Can you give me a hint which revision is newer and why you made these changes.
Under wich license did you release the schematics? Am I allowed to modify and republish them?

Thanks again.
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KiCad Schematics pedalSHIELD. 10 months 3 days ago #70

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In the KiCad files are 2 more caps (C16,C17 100n) between +5 and GND, -5 and GND.
Yes, these 2 caps were place for super-filtering in the power supply but after tests I did not find any difference between placing them or not. The power lines are clean. So the footprints are in the PCB (bottom left) but they are not included in the BOM.

The values of C2, C5, C8, C9 and C12 are 47p, the screenshot and the BOM lists these as 270p.
The right value is 270pF, thanks for spotting that. I have updated the KiCad native files. I did several tests for filtering harsh high-freqs, I started using 47pF that is why that value was there. 270pF is a nice value, however there is not a big audible difference if you place 47pF.

Under wich license did you release the schematics? Am I allowed to modify and republish them?
Everything published in electrosmash.com (including these schematics) are under Creative Commons Attribution 3.0, the less restrictive I have found. You're of course allowed to modify and republish them. I encourage you to do so :)
keep it simple
Last Edit: 10 months 3 days ago by JR.
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