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title: "Thread: sky130's mpw_precheck has an oeb check"
slug: wsd-sky130s-mpwprecheck-has-an-oeb-check-2213439c
route: /evidence/i-information/general/threads/sky130s-mpwprecheck-has-an-oeb-check
section: reference
access: public
summary: 5 Discord messages from ℹ️ - Information/general/threads/sky130s-mpwprecheck-has-an-oeb-check.md.
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---
# Thread: sky130's mpw_precheck has an oeb check
Category: **ℹ️ - Information**
Parent channel: **#general**
Thread ID: `1436186116788326441`
Messages: **5**
## message-1436251823811067935
**2025-11-07T07:11:59.065+00:00 — Leo Moser (mole99) (@mole99)**
- Message ID: `1436251823811067935`
- Author ID: `323371864074485771`
- Nickname: Leo Moser (mole99)
- User name: mole99
- Type: `21`
- Discord message: https://discord.com/channels/1361349522684510449/1436186116788326441/1436251823811067935
- Archive source: https://discord.wafer.space/wafer-space/%E2%84%B9%EF%B8%8F%20-%20Information/general/sky130s-mpwprecheck-has-an-oeb-check/2025-11/2025-11.json
- Archive source: https://discord.wafer.space/wafer-space/Voice%20Channels/general/sky130s-mpwprecheck-has-an-oeb-check/2025-11/2025-11.json
**Reply/reference**
- https://discord.com/channels/1361349522684510449/1361349523724570941/1436186116788326441
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```
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---
## message-1436251828525465610
**2025-11-07T07:12:00.189+00:00 — Leo Moser (mole99) (@mole99)**
- Message ID: `1436251828525465610`
- Author ID: `323371864074485771`
- Nickname: Leo Moser (mole99)
- User name: mole99
- Type: `Default`
- Discord message: https://discord.com/channels/1361349522684510449/1436186116788326441/1436251828525465610
- Archive source: https://discord.wafer.space/wafer-space/%E2%84%B9%EF%B8%8F%20-%20Information/general/sky130s-mpwprecheck-has-an-oeb-check/2025-11/2025-11.json
- Archive source: https://discord.wafer.space/wafer-space/Voice%20Channels/general/sky130s-mpwprecheck-has-an-oeb-check/2025-11/2025-11.json
**Content**
```text
Hi @bailey!
Thanks for asking, but I don't think this is necessary for wafer.space.
Since the users can swap out the pad types in the pad ring, they can simply use an input-only pad when they need one.
Also, as we don't have the complexity of Caravel, the final behaviour can be directly observed in the top-level GL simulation, which includes the pad cells.
```
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---
## message-1436259011644362752
**2025-11-07T07:40:32.778+00:00 — bailey (@bailey8889)**
- Message ID: `1436259011644362752`
- Author ID: `738396032295108721`
- Nickname: bailey
- User name: bailey8889
- Type: `Default`
- Discord message: https://discord.com/channels/1361349522684510449/1436186116788326441/1436259011644362752
- Archive source: https://discord.wafer.space/wafer-space/%E2%84%B9%EF%B8%8F%20-%20Information/general/sky130s-mpwprecheck-has-an-oeb-check/2025-11/2025-11.json
- Archive source: https://discord.wafer.space/wafer-space/Voice%20Channels/general/sky130s-mpwprecheck-has-an-oeb-check/2025-11/2025-11.json
**Content**
```text
Thanks @Leo Moser (mole99) . I'm a little late to the game here. Could you direct me to the documentation on how to create the pad ring?
```
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---
## message-1436261120322179083
**2025-11-07T07:48:55.526+00:00 — Leo Moser (mole99) (@mole99)**
- Message ID: `1436261120322179083`
- Author ID: `323371864074485771`
- Nickname: Leo Moser (mole99)
- User name: mole99
- Type: `Default`
- Discord message: https://discord.com/channels/1361349522684510449/1436186116788326441/1436261120322179083
- Archive source: https://discord.wafer.space/wafer-space/%E2%84%B9%EF%B8%8F%20-%20Information/general/sky130s-mpwprecheck-has-an-oeb-check/2025-11/2025-11.json
- Archive source: https://discord.wafer.space/wafer-space/Voice%20Channels/general/sky130s-mpwprecheck-has-an-oeb-check/2025-11/2025-11.json
**Content**
```text
Sure! It's this template here: https://github.com/wafer-space/gf180mcu-project-template
```
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---
## message-1436261304804442208
**2025-11-07T07:49:39.51+00:00 — Leo Moser (mole99) (@mole99)**
- Message ID: `1436261304804442208`
- Author ID: `323371864074485771`
- Nickname: Leo Moser (mole99)
- User name: mole99
- Type: `Default`
- Discord message: https://discord.com/channels/1361349522684510449/1436186116788326441/1436261304804442208
- Archive source: https://discord.wafer.space/wafer-space/%E2%84%B9%EF%B8%8F%20-%20Information/general/sky130s-mpwprecheck-has-an-oeb-check/2025-11/2025-11.json
- Archive source: https://discord.wafer.space/wafer-space/Voice%20Channels/general/sky130s-mpwprecheck-has-an-oeb-check/2025-11/2025-11.json
**Content**
```text
You install Nix, run `nix-shell` to enable the environment, clone the PDK `make clone-pdk` and run LibreLane `make librelane`.
```
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