A great way to diagnose a signals problem is using a logic analyzer. They can provide a graphical representation of data on several inputs. What we have here is a 4 input logic analyzer developed by Vassilis Serasidis. The circuit can support up to 4 inputs being sampled at 100Khz. On the website, he provides the schematics and breadboard layouts so you can make your own.

This logic analyzer makes me want to revisit the portable game console project. I could include the same functionality and add capture/playback type features.

This is a great debugging tool to have in your arsenal. If you’re in the market for a logic analyzer and don’t want to go the DIY route check out the Saleae Logic. You can pick one up for only $150.

Image from serasidis.gr

About The Author

J.P. Armstrong

I'm the chief blogger at Armtronics. I enjoy writing articles that focus on embedded systems, microcontrollers, and programming projects that interest young engineers. Being a recent graduate, I know how some topics can be dry. It's important to point out fun and practical applications of theories engineering students learn. jparmstrong.com

Tags: avr, lcd, logic analyzer, microcontroller

This entry was posted on Wednesday, February 15th, 2012 at 9:10 am and is filed under Electronics, Microcontrollers. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.