Openbench Logic Sniffer is an open source logic analyzer. It’s designed to support the SUMP logic analyzer software at the lowest possible cost. This project is a collaboration between the Gadget Factory and Dangerous Prototypes.
The Logic Sniffer got a mention in a Nuts & Volts article titled Reading and Writing an EEPROM Using the Arduino. From the online viewer:
Without a logic analyzer, it would be extremely difficult to troubleshoot problems with a digital circuit like this. I use a Rigol DS1052D but there are many less expensive alternatives including an open source hardware/software logic analyzer that is around $45.
The author’s goal in the article is to copy an EEPROM. That would be even easier and cheaper with the Bus Pirate than an Arduino, but learning how to code it yourself is a ton of fun too.
The OLS is currently on back order, but the next batch should arrive soon. You can back order the OLS at Seeed Studio for $45, including worldwide shipping.
Thanks for the tip RoyalBlu!