4 layers144.1 × 93.3 mm MaD Edge, the printed circuit board in 3D

MaD Edge

Q: How big is the MaD Edge PCB?

It measures 144.1 × 93.3 mm and has 4 copper layers, 4.69 mm thick.

Q: What parts does the MaD Edge use?

289 parts, built around the UCC12040DVER, AM26LS31CD, SN74LVC1G14DBV and AM26C32IDRE4. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.

Q: Where can I download the MaD Edge KiCad files?

From the RileyMcCarthy/MaD repository on GitHub, at the commit this page was made from: the board is Hardware/EdgeBoard/KiCad/MaD_Edge.kicad_pcb and its schematic Hardware/DS2Addon/KICAD/DS2_Addon.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Q: Can I use the MaD Edge design in my own project?

Its repository states no licence, so its author keeps all rights: ask RileyMcCarthy before reusing the design.

RileyMcCarthy/MaD3

Tensile testing machine

Full screen GitHub .kicad_pcb

Size: 144.1 × 93.3 mm
Copper layers: 4
Thickness: 4.69 mm
Parts: 289
Nets: 246
Pads: 785
Tracks, vias: 1,731, 423
Pours: 51
Routed: Yes
KiCad: KiCad 9.0 (file 20241229)
Created: 2 Apr 2021
Updated: 7 Nov 2026

Overview

MaD Edge is an open-source printed circuit board by RileyMcCarthy, from the RileyMcCarthy/MaD repository on GitHub. It is a 4-layer board of 144.1 × 93.3 mm with 289 parts on 246 nets, routed with 1,731 tracks and 423 vias.

It is built around the UCC12040DVER, AM26LS31CD and SN74LVC1G14DBV, with the AM26C32IDRE4, APM4953 and SS36 among its other parts. Its parts include 41 ICs, 38 resistors, 31 capacitors, 23 diodes and 12 connectors.

Main components

README

README.md

MaD — Low-Cost Open-Source Tensile Testing Machine

A relatively low-cost (< $4,000), portable, spray-resistant, user-modifiable, open-source uniaxial tensile testing machine designed for low-modulus elastomeric and biologic materials.

📖 Documentation: https://rileymccarthy.github.io/MaD/ · 🚀 Run the control app: https://rileymccarthy.github.io/MaD/app/ (Chrome/Edge)

The full guides — first-time setup, every UI screen with screenshots, the architecture, and developer/reference material — live on the documentation site. This README is the quick map.

Specifications

Parameter	Range
Strain Rate	0 – 2 m/s
Force Measurement	1 – 10 N
Gauge Length	10 – 150 mm
Strain Length	0 – 500 mm
Data Rate	1000 samples/sec

The control app runs in your browser

The control app — Control — is a frontend-only Progressive Web App. There is nothing to install: the browser talks straight to the Propeller 2 over the Web Serial API, and the protocol logic runs as WebAssembly compiled from the same Rust core used by the firmware tooling and the test rig.

Open https://rileymccarthy.github.io/MaD/app/ in Chrome or Edge, connect over USB, and run a test. See the operator quick-start.

Chromium-only: Web Serial and the File System Access API are available only in Chrome/Edge on desktop.

Repository structure

text

MaD/
├── Firmware/MaDCore/        Embedded C for the Propeller 2 (APP/DEV/IO/Library/HAL/HW)
├── Software/
│   └── Control/      Browser control app (Web Serial + WASM) — the app you ship
├── Protocol/                Schema + toolchain + Rust codec crate
│   ├── MaDProtocol.yaml     Single source-of-truth schema
│   ├── rust/                The `protocol` crate — generated Rust codec (SIL workspace member)
│   └── ProtoEmb/            ⎘ submodule → github.com/RileyMcCarthy/protoemb (YAML→C/TS/Rust codegen + runtime)
├── SIL/                     Software-in-the-loop test rig (Rust workspace)
│   ├── embsim/              ⎘ submodule → github.com/RileyMcCarthy/embsim (reusable SIL framework)
│   ├── models/              MaD physics models (gantry, sample, strain gauge)
│   ├── mad-catalog/         MaD's embsim kinds (carrier, add-on, ISS, machine); mad*.toml are the machine's projects
│   └── MaDSim/              The mad-emulator binary; no target runs it, and it retires (MaD #298)
├── Hardware/                KiCad PCB designs (EdgeBoard, DS2Addon)
└── docs/  +  mkdocs.yml     The documentation site

Two components are git submodules (they are standalone open-source libraries): Protocol/ProtoEmb and SIL/embsim. Clone with git clone --recurse-submodules, or run git submodule update --init --recursive in an existing checkout.

How it fits together

A single YAML schema (Protocol/MaDProtocol.yaml) generates the encode/decode code for the firmware (C), the app (TypeScript + WASM), and the test rig (Rust), so every layer agrees on the wire format byte-for-byte. The app and firmware speak this ProtoEmb binary protocol over serial; motion profiles compile to G-code that the firmware plays back from its SD card.

See How it works for the architecture with diagrams.

Quick start

Use the app

Open https://rileymccarthy.github.io/MaD/app/ in Chrome/Edge — no install.

Run the app from source

bash

cd Software/Control
npm install
npm run build:wasm        # compile the Rust protocol core → src/wasm/
npm run generate:proto    # generate the TS codec from the YAML schema
npm run app               # opens your browser; connect via Web Serial

Build the firmware

bash

cd Firmware/MaDCore
pio run -e P2Eval              # build for hardware
pio run -e P2Eval -t upload   # flash a connected board
pio run -e MaDEdge      # image the SIL emulator executes
pio test -e native_test           # unit tests
pio check -e P2Eval --fail-on-defect=medium --fail-on-defect=high  # MISRA (medium+high)

Run the full simulation (no hardware)

bash

cd SIL
make test         # build both P2 images + the workspace, run the Rust test suite
make playground   # the machine's project + the app in a Chrome window on the board's clock
make e2e          # the e2e suite on the machine's project, mad-cosim.toml (SCENARIOS=… for a subset)

Regenerate the protocol

After editing Protocol/MaDProtocol.yaml, regenerate all three targets so they stay in lock-step (the firmware also regenerates its C target on every build):

bash

# from repo root
python3 ./Protocol/ProtoEmb/core/generate.py --schema ./Protocol/MaDProtocol.yaml --target c  --output ./Firmware/MaDCore/src/Generated         --templates ./Protocol/ProtoEmb/core/templates
python3 ./Protocol/ProtoEmb/core/generate.py --schema ./Protocol/MaDProtocol.yaml --target ts --output ./Software/Control/src/protocol/generated --templates ./Protocol/ProtoEmb/core/templates
python3 ./Protocol/ProtoEmb/core/generate.py --schema ./Protocol/MaDProtocol.yaml --target rs --output ./Protocol/rust/src/generated          --templates ./Protocol/ProtoEmb/core/templates

Documentation

If you want to…	Go to
Run your first test	Getting started
Learn every screen	User guide
Understand the design	How it works
Build & contribute	Developer guide
Look up the protocol / G-code / formats	Reference

To work on the docs locally:

bash

pip install -r docs/requirements.txt
mkdocs serve     # http://127.0.0.1:8000

CI/CD & releases

GitHub Actions builds and tests on every push/PR (.github/workflows/ci.yml) and deploys the docs + app to GitHub Pages (.github/workflows/pages.yml). Releases are cut with version tags:

bash

Software/Control/scripts/release.sh patch --no-tag   # bump package.json, then PR
Software/Control/scripts/release.sh --publish        # tag origin/main as madcontrol-vX.Y.Z
git tag firmware-v1.0.0 && git push origin firmware-v1.0.0   # firmware binaries
git tag hardware-v1.0.0 && git push origin hardware-v1.0.0   # hardware manufacturing files

License

MIT

Project files

Show this board on your page

https://pcbkit.io/boards/RileyMcCarthy/MaD

The board's own page, for a message or a post.

Source

Repository: RileyMcCarthy/MaD
Board file: Hardware/EdgeBoard/KiCad/MaD_Edge.kicad_pcb
Commit: 4bf3926
Licence: Not stated
Copies: 2 copies in 2 repositories

Parts

289

Qty	Value	Footprint	References
22	0.1uF	Capacitor_SMD:C_0603_1608Metric	C10, C11, C12, C13, C14, C15, C18, C19, C20, C21, C22, C23, C24, C25, C26, C27 +6
21	220R	Resistor_SMD:R_0603_1608Metric	R10, R11, R12, R13, R14, R15, R16, R17, R18, R19, R21, R22, R30, R31, R32, R33 +5
21	LED	LED_SMD:LED_0603_1608Metric	D3, D4, D10, D11, D12, D13, D15, D16, D18, D19, D20, D21, D22, D23, D24, D25 +5
21	SN74LVC1G14DBV	Package_TO_SOT_SMD:SOT-23-5	U10, U11, U12, U13, U14, U15, U16, U17, U18, U19, U21, U22, U27, U28, U29, U30 +5
9	1K	Resistor_SMD:R_0603_1608Metric	R1, R2, R3, R4, R5, R6, R7, R8, R25
8	G***	kibuzzard-64777688	kibuzzard-64777688, kibuzzard-64777688, kibuzzard-64777688, kibuzzard-64777688, kibuzzard-64777688, kibuzzard-64777688, kibuzzard-64777688, kibuzzard-64777688
8	G***	kibuzzard-64777654	kibuzzard-64777654, kibuzzard-64777654, kibuzzard-64777654, kibuzzard-64777654, kibuzzard-64777654, kibuzzard-64777654, kibuzzard-64777654, kibuzzard-64777654
8	G***	kibuzzard-64777629	kibuzzard-64777629, kibuzzard-64777629, kibuzzard-64777629, kibuzzard-64777629, kibuzzard-64777629, kibuzzard-64777629, kibuzzard-64777629, kibuzzard-64777629
8	NSI50010YT1G	NSI50010YT1G:SOD3716X135N	IC6, IC7, IC8, IC9, IC10, IC11, IC12, IC13
5	2.2K	Resistor_SMD:R_0603_1608Metric	R40, R41, R42, R43, R44
4	10uF	Capacitor_SMD:C_1206_3216Metric	C5, C6, C16, C17
4	G***	kibuzzard-647777A9	kibuzzard-647777A9, kibuzzard-647777A9, kibuzzard-647777A9, kibuzzard-647777A9
4	G***	kibuzzard-64777781	kibuzzard-64777781, kibuzzard-64777781, kibuzzard-64777781, kibuzzard-64777781
4	G***	kibuzzard-6477779F	kibuzzard-6477779F, kibuzzard-6477779F, kibuzzard-6477779F, kibuzzard-6477779F
4	G***	kibuzzard-647777B2	kibuzzard-647777B2, kibuzzard-647777B2, kibuzzard-647777B2, kibuzzard-647777B2
4	MountingHole_Pad	MountingHole:MountingHole_4mm_Pad	H5, H6, H7, H8
4	VO2631	Package_DIP:DIP-8_W7.62mm	U5, U6, U7, U8
2	470uF	Capacitor_SMD:C_Elec_10x10.2	C1, C2
2	G***	kibuzzard-64777339	kibuzzard-64777339, kibuzzard-64777339
2	G***	kibuzzard-647770C7	kibuzzard-647770C7, kibuzzard-647770C7
2	G***	kibuzzard-64777365	kibuzzard-64777365, kibuzzard-64777365
2	ISO6742DWR	ISO6742DWR:SOIC127P1030X265-16N	IC1, IC2
2	SS36	Diode_SMD:D_SMC	D1, D2
2	UCC12040DVER	UCC12040DVER:SOIC127P1030X265-16N	IC3, IC4
1	0.1uF	Capacitor_SMD:C_0402_1005Metric	C30
1	0.2A/30V	Fuse:Fuse_1206_3216Metric	F1
1	10K	Resistor_SMD:R_0603_1608Metric	R39
1	180uF	Capacitor_SMD:CP_Elec_8x6.9	C3
1	330uF	Capacitor_SMD:C_Elec_10x10.2	C4
1	390R	Resistor_SMD:R_0603_1608Metric	R38
1	4.7K	Resistor_SMD:R_0603_1608Metric	R24
1	436500321	Connector_Molex:Molex_Micro-Fit_3.0_43045-0618_2x03-1MP_P3.00mm_Vertical	J4
1	47uH/3A	Inductor_SMD:L_10.4x10.4_H4.8	L2
1	68uH/3A	Inductor_SMD:L_10.4x10.4_H4.8	L1
1	6N137	Package_DIP:DIP-8_W7.62mm	U4
1	AM26C32IDR	Package_SO:SOIC-16_3.9x9.9mm_P1.27mm	U25
1	AM26LS31CD	Package_SO:SOIC-16_3.9x9.9mm_P1.27mm	U24
1	APM4953	Package_SO:SOP-8_3.9x4.9mm_P1.27mm	U3
1	A_REF	Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical	JP2
1	B_REF	Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical	JP3
1	ChargePump	Connector_Molex:Molex_Micro-Fit_3.0_43650-0321_1x03_P3.00mm_Vertical	J10
1	Debug	Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical	J1
1	Door	Connector_Molex:Molex_Micro-Fit_3.0_43650-0321_1x03_P3.00mm_Vertical	J16
1	ENC_PWR	Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical	J25
1	ENDLower	Connector_Molex:Molex_Micro-Fit_3.0_43650-0321_1x03_P3.00mm_Vertical	J15
1	ENDUpper	Connector_Molex:Molex_Micro-Fit_3.0_43650-0321_1x03_P3.00mm_Vertical	J14
1	ESDActive	Connector_Molex:Molex_Micro-Fit_3.0_43650-0321_1x03_P3.00mm_Vertical	J13
1	ESDLower	Connector_Molex:Molex_Micro-Fit_3.0_43650-0321_1x03_P3.00mm_Vertical	J12
1	ESDUpper	Connector_Molex:Molex_Micro-Fit_3.0_43650-0321_1x03_P3.00mm_Vertical	J11
1	Encoder	Connector_Molex:Molex_Micro-Fit_3.0_43045-1015_2x05_P3.00mm_Vertical	J20
1	Force	Connector_Molex:Molex_Micro-Fit_3.0_43045-0615_2x03_P3.00mm_Vertical	J9
1	G***	kibuzzard-6477707F	kibuzzard-6477707F
1	G***	kibuzzard-64777285	kibuzzard-64777285
1	G***	kibuzzard-6474D10F	kibuzzard-6474D10F
1	G***	kibuzzard-647778EA	kibuzzard-647778EA
1	G***	kibuzzard-6474CF4E	kibuzzard-6474CF4E
1	G***	kibuzzard-647778DF	kibuzzard-647778DF
1	G***	kibuzzard-6477723E	kibuzzard-6477723E
1	G***	kibuzzard-64777922	kibuzzard-64777922
1	G***	kibuzzard-6474D2C7	kibuzzard-6474D2C7
1	G***	kibuzzard-6477743C	kibuzzard-6477743C
1	G***	kibuzzard-64777573	kibuzzard-64777573
1	G***	kibuzzard-6474CE56	kibuzzard-6474CE56
1	G***	kibuzzard-64777131	kibuzzard-64777131
1	G***	kibuzzard-6474D36B	kibuzzard-6474D36B
1	G***	kibuzzard-6474D298	kibuzzard-6474D298
1	G***	kibuzzard-64777136	kibuzzard-64777136
1	G***	kibuzzard-64777448	kibuzzard-64777448
1	G***	kibuzzard-64777814	kibuzzard-64777814
1	G***	kibuzzard-64777848	kibuzzard-64777848
1	G***	kibuzzard-6474D3A4	kibuzzard-6474D3A4
1	G***	kibuzzard-64777263	kibuzzard-64777263
1	G***	kibuzzard-64777463	kibuzzard-64777463
1	G***	kibuzzard-64777822	kibuzzard-64777822
1	G***	kibuzzard-64777588	kibuzzard-64777588
1	G***	kibuzzard-64777469	kibuzzard-64777469
1	G***	kibuzzard-64777566	kibuzzard-64777566
1	G***	kibuzzard-6474D2B0	kibuzzard-6474D2B0
1	G***	kibuzzard-6474D12A	kibuzzard-6474D12A
1	G***	kibuzzard-647772FA	kibuzzard-647772FA

The 229 most common of 289 parts.

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Questions

How big is the MaD Edge PCB?

It measures 144.1 × 93.3 mm and has 4 copper layers, 4.69 mm thick.

What parts does the MaD Edge use?

289 parts, built around the UCC12040DVER, AM26LS31CD, SN74LVC1G14DBV and AM26C32IDRE4. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.

Where can I download the MaD Edge KiCad files?

From the RileyMcCarthy/MaD repository on GitHub, at the commit this page was made from: the board is Hardware/EdgeBoard/KiCad/MaD_Edge.kicad_pcb and its schematic Hardware/DS2Addon/KICAD/DS2_Addon.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the MaD Edge design in my own project?

Its repository states no licence, so its author keeps all rights: ask RileyMcCarthy before reusing the design.

Overview

Main components

UCC12040DVER

AM26LS31CD

SN74LVC1G14DBV

AM26C32IDRE4

APM4953

SS36

README

MaD — Low-Cost Open-Source Tensile Testing Machine

Specifications

The control app runs in your browser

Repository structure

How it fits together

Quick start

Use the app

Run the app from source

Build the firmware

Run the full simulation (no hardware)

Regenerate the protocol

Documentation

CI/CD & releases

License

Parts

More from RileyMcCarthy/MaD

Similar boards

Questions

How big is the MaD Edge PCB?

What parts does the MaD Edge use?

Where can I download the MaD Edge KiCad files?

Can I use the MaD Edge design in my own project?