---
title: "Instrument Basics: Logic Probe | Workbench Wednesdays #27"
description: "Logic probes are great for debugging 7400 series logic chips and digital circuits. In this video, James makes a counter circuit and debugs each stage as he builds, with a Logic…"
canonical: "https://www.baldengineer.com/instrument-basics-logic-probe-workbench-wednesdays-27.html"
author: "James Lewis"
date: "2020-08-13T21:36:00Z"
lastmod: "2022-04-01T21:40:25Z"
categories: ["blog","element14","test-equipment","workbench-wednesdays","videos"]
tags: ["555","7400-series","digital","logic"]
---

# Instrument Basics: Logic Probe | Workbench Wednesdays #27


Logic probes are great for debugging 7400 series logic chips and digital circuits. In this video, James makes a counter circuit and debugs each stage as he builds, with a Logic Probe. If you are wondering, "do I need a logic probe" this video shows how one can be used and even answers when you should consider buying one.