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Thread: Chip-on-Board Module as Component

13 Discord messages from ℹ️ - Information/⁉️-questions/threads/chip-on-board-module-as-component.md.

Category: ℹ️ - Information Parent channel: #⁉️-questions Thread ID: 1470339351698477151

Messages: 13

message-1470339351698477151

2026-02-09T08:43:39.029+00:00 — Meinhard Kissich (@meinhard)

Content

Hi, I‘m about to start preparing a PCB 🙂 What is the recommended way to include your chip-on-board-wire-bonded-pcb in a KiCAD project to have the labeled symbol in the schematic and your designed footprint as a placeholder in the layout? While I can open/edit your project, I’m in question on how to include it properly.
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message-1470659993224220794

2026-02-10T05:57:45.926+00:00 — Tim 'mithro' Ansell (@mithro_)

Content

@Andrew Wingate - You seem to have ideas / opinions on this.
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message-1470660093766009019

2026-02-10T05:58:09.897+00:00 — Tim 'mithro' Ansell (@mithro_)

Content

@Meinhard Kissich - I believe you should probably ask in the #📦-cob channel and look at the information there.
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message-1470661939272093696

2026-02-10T06:05:29.9+00:00 — Andrew Wingate (@anfroholic)

Content

Thanks @Tim 'mithro' Ansell

Hey @Meinhard Kissich
Looking at this, theres a lot of work I need to do to make this more accessible.
In https://github.com/wafer-space/chip-on-board-wire-bonded-pcbs/tree/main/scratch/motherboards/motherboards you can see a couple simple examples.

See them in [kicanvas](https://kicanvas.org/?repo=https%3A%2F%2Fgithub.com%2Fwafer-space%2Fchip-on-board-wire-bonded-pcbs%2Ftree%2Fmain%2Fscratch%2Fmotherboards%2Fmotherboards)

Kicad's symbol sharing is beyond atrocious. I recommend just opening the file and saving the symbols to your library however you see fit. And if you don't care about adding to your library, you can just copy/paste or whatever else suits you.
The default pads just pass the pad number from the default template, and are also aliased to Tiny Tapeouts pin conventions as well.

Hope that helps

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message-1470662298250248435

2026-02-10T06:06:55.487+00:00 — Andrew Wingate (@anfroholic)

Content

@Tim 'mithro' Ansell It would be super cool if there was a way Kicanvas could post a view of the board in the preview like the other link above.
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message-1470662904805195776

2026-02-10T06:09:20.101+00:00 — Tim 'mithro' Ansell (@mithro_)

Content

@Andrew Wingate - Maybe ask an AI if it can make that happen? 😛

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message-1470663048607043624

2026-02-10T06:09:54.386+00:00 — Andrew Wingate (@anfroholic)

Reply/reference

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Content

I don't have enough tokens
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message-1470677237375176795

2026-02-10T07:06:17.252+00:00 — Meinhard Kissich (@meinhard)

Content

Great, thanks for the support 🙂
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message-1476262085682921676

2026-02-25T16:58:28.85+00:00 — Meinhard Kissich (@meinhard)

Content

@Andrew Wingate After some refinement I'm quite happy with my board now. The Chip-on-Board repo mentions _WiP_. Should I wait for sending the board to manufacturing or is the Mezzanine connector pinout (i.e., [1]) already settled?

[1] https://github.com/wafer-space/chip-on-board-wire-bonded-pcbs/tree/main/74pad-70pin-mezzanine
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message-1476330917793497089

2026-02-25T21:31:59.704+00:00 — Tim 'mithro' Ansell (@mithro_)

Content

@Meinhard Kissich - Depends on how much your board costs and how much you care about if you have to do a respin.

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message-1476479220309033043

2026-02-26T07:21:17.779+00:00 — Meinhard Kissich (@meinhard)

Content

Okay 🙂
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message-1476844540894908519

2026-02-27T07:32:56.994+00:00 — Leo Moser (mole99) (@mole99)

Content

@Andrew Wingate Could you comment on whether the pinout of the CoB board is stable?
I believe at least Hirosh's and Meinhard's PCBs already depend on it.
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message-1476845061374214215

2026-02-27T07:35:01.086+00:00 — Andrew Wingate (@anfroholic)

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Content

Yeah, I've already said this to @asic destroyer and others I believe.
@Meinhard Kissich we should not be having any changes to the COB for at least this run.
What we have should be considered stable and we will discuss further improvements possibly for run #2

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