Prototype: Openbench Logic Sniffer logic analyzer @ Dangerous Prototypes – nicely done Ian, and Jack Gassett at the Gadget Factory as well as all involved!

Openbench Logic Sniffer is an open source logic analyzer. It’s designed to support the SUMP logic analyzer software at the lowest possible cost. Download the source and design files from the Gadget Factory project page.

This project started in the comments on a post. Initial circuit design, PCB layout, development, and testing continued in the forum under the code name Project SUMP PUMP. Many, many people contributed ideas and advice, the Gadget Factory and Dangerous Prototypes coordinated circuit development and routed the PCB. We borrowed heavily from the Gadget Factory’s Butterfly Platform.

The Open Logic Sniffer is a purpose-built logic analyzer board designed to be low cost but high speed. It sacrifices a lot of the features you’d look for in a full-scale development board to achieve our primary goals:

* 70MHz+ sample speeds
* 32 channels
* 16 buffered, 5volt tolerant channels
* USB interface, USB powered
* USB upgradable everything
* Make it as DIY as possible
* Make it as open source as possible
* $30-$40 price range

We didn’t quite hit our initial price range, but we got really close.

You can get your own assembled Open Logic Sniffer at Seeed Studio for $45, including worldwide shipping. Continue reading about the design and collaboration below.