Cable Tracer

Summary

This project was designed to trace multiple unmarked TV aerial cables by simultaneously outputting 1-12 tone pulses on pins D13,D2-D12 of an Arduino Nano.

• Pulses are approx 250ms long with 250ms gap and 261Hz (Middle C)
• A missing pulse identifies each pulse sequence
• Pulses may be observed with an LED and / or speaker
• Use 220R resistors to connect Port pins and 0V to cables under test

For your own safety ensure that wires under investigation are safe before connecting this device.

Scope display

Outputs D3 and D4.