Macchina OBD-II 3-Way Breakout

The Macchina OBD-II 3-Way Breakout Board simplifies OBD2 device development by splitting a single OBD2 port into three accessible connectors with flexible signal routing. Junction blocks let you reroute individual OBD2 pins between connectors using jumper wires — useful for sniffing traffic, man-in-the-middle testing, or emulating an OBD2 port on the bench.

An external 12 V power input supports desktop development without a vehicle, or you can draw power from the vehicle via an OBD2 extension cable.

Key Features

• 3-Way OBD2 Breakout – 1× male input connector, 2× female output connectors
• Junction Blocks – Fully configurable signal routing between all connectors
• 12 V Power Input – External adapter for bench-top development
• Power Jumpers – Independent power control to each output connector
• CAN Termination – 2 sets of termination resistors included
• Power Indicator – Green LED shows when power is active

Specifications

• Input: 1× OBD2 connector (male pins)
• Outputs: 2× OBD2 connectors (female pins)
• Power: 12 V external or vehicle-supplied via OBD2
• CAN Termination: 2 sets of 120 Ω resistors

Ideal For

• OBD2 device prototyping and development
• CAN bus sniffing and analysis
• Man-in-the-middle signal testing
• Bench-top OBD2 emulation

Package Contents

• 1× Macchina OBD-II 3-Way Breakout Board

Resources

• Product Documentation (Macchina)
• Hardware Files (GitHub)