Prototype: Openbench Logic Sniffer logic analyzer

Posted on Feb 5, 2014

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 t

Prototype: Openbench Logic Sniffer logic analyzer
Click here to download the full size of the above Circuit.

he 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: 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. SUMP is an open source Java logic analyzer client by Michael Poppitz. It consists of two parts, a VHDL logic capture engine for FPGAs, and a Java logic analyzer client. The latest development version of the SUMP client is available from SourceForge. net. SUMP is a sampling logic analyzer. It reads the state of the input pins and stores the samples in internal ram. It then dumps the samples back to the computer client for analysis. The number of samples possible is limited by the RAM in the FPGA. We like SUMP because it`s the best developed open source logic analyzer toolchain currently available. It has lots of professional features like multi-stage triggers, configurable pre-roll, external trigger and clock sync, and a few protocol analyzers (I2C, UART). It`s open source, so the potential to add...

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