HardLabs

AxleTap — Automotive Ethernet Tap

jayis1·hacker-devices·axle-tap/kicad/axle-tap.kicad_pcb

AxleTap — Automotive Ethernet Tap PCB layout, top view — open source STM32 board by jayis1

About the AxleTap — Automotive Ethernet Tap PCB

AxleTap — Automotive Ethernet Tap is an open source STM32 PCB design by jayis1, published on GitHub. It is a 4-layer board measuring 120 × 125 mm, with 8 components from 7 distinct parts.

Its main chip is the STM32H723ZGT6, from the STM32 family. Other key parts include the 88Q2112 and nRF52820. By type, the board carries 4 ICs, 3 diodes and 1 connector.

From the project

Full-cycle hardware designs for security research devices — each device is a subfolder with its own README, schematics, PCB layout, and software stack

Author / Creator: jayis1 License: Hardware: CERN-OHL-S v2 · Firmware: GPL-2.0 · App: MIT Status: Design complete — ready for fabrication

The AxleTap is a portable, pocket-sized Automotive Ethernet interception, manipulation, and time-attack platform. It targets the 100BASE-T1 / 1000BASE-T1 single-twisted-pair full-duplex Ethernet links (IEEE 802.3bw / 802.3bp) that have become the high-bandwidth backbone of modern vehicles — connecting ADAS sensor fusion ECUs, central compute / zonal controllers, infotainment SoCs, and increasingly the autonomous driving stack. It also targets the…

Main components on the AxleTap — Automotive Ethernet Tap

STM32H723ZGT688Q2112nRF52820

AxleTap — Automotive Ethernet Tap bill of materials (BOM)

8 components, 7 distinct parts.

QtyPartRefs
1
STM32H723ZGT6
U1
2
88Q2112
U2, U3
1
nRF52820
U4
1
USB_C_Receptacle
J1
1
LED_LINKA
D1
1
LED_LINKB
D2
1
LED_ARM
D3

AxleTap — Automotive Ethernet Tap design files

The KiCad project lives in the jayis1/hacker-devices repository on GitHub; these links point at the commit this page was built from.

AxleTap — Automotive Ethernet Tap: common questions

What microcontroller does the AxleTap — Automotive Ethernet Tap use?

The AxleTap — Automotive Ethernet Tap is built around the STM32H723ZGT6, from the STM32 family.

How big is the AxleTap — Automotive Ethernet Tap PCB?

The AxleTap — Automotive Ethernet Tap measures 120 × 125 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the AxleTap — Automotive Ethernet Tap?

8 components, from 7 distinct parts. The full bill of materials is listed on this page.

Where can I download the AxleTap — Automotive Ethernet Tap design files?

From the jayis1/hacker-devices repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the AxleTap — Automotive Ethernet Tap design in my own project?

The repository has no license, so all rights stay with jayis1. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the AxleTap — Automotive Ethernet Tap without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.

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