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Posts Tagged ‘logic analyzer’

2.4 megasamples per second continuous AVR logic capture

Thursday, June 12th, 2014

From the comments on our earlier Turning the Freedom board into a Logic Analyzer post, Ralph Doncaster writes: For situations where the samples will fit in RAM, this is good. For long sampling periods I used a USBasp and a PL-2303HX to make a logic analyzer that can sample 2 lines...

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Posted in AVR, logic analyzer | No Comments »

Building a CPLD based logic analyzer

Tuesday, January 21st, 2014

Alex from InsideGadgets has been working on a Building a CPLD Based Logic Analyser. In Part I of his post he details his build of a logic analyzer which saves the sample to external SRAM. For this project Alex used the Altera MAXII EPM240 development board with an on board...

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Posted in builds, code, CPLD, how-to, logic analyzer | No Comments »

A new open source 200MHz logic analyer

Thursday, January 9th, 2014

Here's an interesting open source 200MHz logic analyzer project on Kickstarter, the DSLogic by DreamSourceLab: DSLogic consists of DSLogic-Core and extension modules. DSLogic-Core is a re-configurable circuit board based on FPGA technology with maximum 200MHz sampling rate and 64Mbit on-board memory. DSLogic-Core can work alone as a fully functional logic analyzer, along with...

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Posted in open source | 8 Comments »

Arduino Uno 3 million samples per second logic analyzer

Tuesday, June 25th, 2013

Bob Davis has built an Arduino powered three Million samples per second six channel logic analyzer: In the video below you can see what the live display looks like. He is using a 74 series decade counter to divide down a 10Mhz crystal so that he has some nice fast...

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Posted in Arduino | 2 Comments »

PIC32 8 channel version of the Logic Shrimp

Friday, November 30th, 2012

Marcus is designing an 8 channel version of our Logic Shrimp. It features a PIC32 microcontroller driving overclocked SRAM chips for more then 20 MSamples/s. It's designed to fit a 3cmx3cm PCB rendered above. Get a Logic Shrimp from Seeed for $35. Via the forum.    

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Posted in Logic Shrimp, project logs | 1 Comment »

MSP430 LaunchPad 4 channel logic analyzer update

Thursday, November 1st, 2012

OPossum already designed a MSP430 LaunchPad logic analyzer based on our Logic Shrimp. In the latest update he decided to follow our lead in changing the 4 23K256 SRAM ICs for a single 23LC1024 IC. Preliminary design of a 4 channel version using the new 23LC1024 SPI RAM. Hope to...

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Posted in Logic Shrimp, MSP430 | 1 Comment »

Inexpensive Sniffer reveals 802.15.4 packet details

Wednesday, April 11th, 2012

Jon used TI's SmartRF Protocol Packet Sniffer to reveal 802.15.4 wireless packet details: For the last several months my work with the XBee modules from Digi International involved using a logic analyzer to monitor the serial communications to and from the modules so I could measure the times between transmissions...

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Posted in logic analyzer | 5 Comments »

AVR based 4 channel mini logic analyzer

Friday, February 3rd, 2012

[embed]http://www.youtube.com/watch?v=oep_eB51JPw[/embed] This small 4 channel logic analyzer uses a ATmega microcontroller and a Nokia 5110 LCD. It's able to capture signals only up to about 100Khz, but there is probably some room for improvement. This mini Logic analyzer is a tool for you to watch on LCD the logic transitions...

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Posted in logic analyzer | No Comments »

7400 competition entry: 8-Channel, 6 -MSPS USB logic analyzer

Friday, October 21st, 2011

Helmy entered an 8-Channel 6MS/s USB logic analyzer into the Open 7400 Logic Competition. His device converts the 8 channel parallel inputs into a UART based serial signal. It outputs this serial signal to the input pin of a PL2303 USB-to-Serial chip which sends the data to the computer. Via...

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Posted in 7400 contest | 1 Comment »

Open bench logic sniffer tutorial

Thursday, June 9th, 2011

The longhorn Engineer I was so impressed by the Open Bench Logic Sniffer that I had to make a little mini review detailing its features. Get a Logic Sniffer for $50, with free worldwide shipping. Via the contact form

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Posted in how-to, logic analyzer | 1 Comment »

Maker Faire 2011: Dangerous DSO

Sunday, May 22nd, 2011

Dangerous DSO is a new logic analyzer/oscilloscope prototype we've been using in the lab. It combines a 16 channel logic analyzer with one 50MHz oscilloscope channel with +/-10volt DC range. The combined tool shows what your signal does between 0 and 1, which helps pinpoint noise and other electrical glitches.

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Posted in FPGA, oscilloscope | 5 Comments »

Free PCB Sunday: Logic Shrimp logic analyzer

Sunday, April 10th, 2011

We go through a lot of prototype PCBs, and end up with lots of extras that we’ll never use. Every Sunday we give away a few PCBs from one of our past or future projects, or a related prototype. Our PCBs are made through Seeed Studio’s Fusion board service. This...

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Posted in Free PCBs | 18 Comments »

NEW PROTOTYPE: Logic Shrimp logic analyzer

Wednesday, April 6th, 2011

The Logic Shrimp is a medium speed, low-cost logic analyzer with a USB interface. It can capture up to 256K samples at 20MHz, and is compatible with the open source SUMP logic analyzer client. The 23K256 serial SRAM from Microchip makes this project possible. Each chip stores up to 256K...

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Posted in logic analyzer, Logic Shrimp, Prototypes | 3 Comments »

Week in (p)review: January 30, 2011

Sunday, January 30th, 2011

Don't forget to share your current project in the comments or the forum. This week our favorite project gets a free SOIC protoboard. Here's a summary of major developments over the last week: The new forum is running, we hope you enjoy the added features of the phpBB software. It...

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Posted in week in review | 4 Comments »

Hacking Kinect with a USB analyzer

Wednesday, December 8th, 2010

Ladyada explores the Kinect protocol using a USB analyzer. While we know the Kinect has already been cracked, this is a good example of how USB analyzers can be a helpful (though costly) addition to a workbench.

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Posted in hacks, reversed, USB | 4 Comments »

Open Logic Sniffer demo and testing videos

Saturday, February 27th, 2010

http://www.youtube.com/watch?v=CQ1lHrEnVFU Jack has a bunch of Open Logic Sniffer tutorial and testing videos at the Gadget Factory. There's also a demo on YouTube, and a high quality screencast. The Open Logic Sniffer is currently available for preorder at Seeed Studio for $45, including worldwide shipping.

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Posted in logic analyzer | No Comments »

Prototype: Openbench Logic Sniffer logic analyzer

Thursday, February 25th, 2010

The most recent documentation is now on the wiki 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...

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Posted in logic analyzer, Prototypes | 74 Comments »

Logic analyzer firmware development update

Tuesday, January 26th, 2010

Today we completed an initial PIC firmware for the open source logic analyzer. The PIC has two operating modes: a serial bridge for SUMP to talk to the client on the FPGA, and a ROM programmer that updates the AT45DB041D flash chip with new logic for the FPGA. There's still...

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Posted in logic analyzer | 3 Comments »

Open source logic analyzer update

Thursday, December 17th, 2009

A few months ago we started working with the Gadget Factory to build an open source logic analyzer. After a very successful collaboration, we're almost ready to order the first PCBs. Click here for a large PCB image [PNG]. The draft device has 16 buffered (5volt tolerant) input channels, and...

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Posted in logic analyzer | 7 Comments »

Arduino logic analyzer

Thursday, December 17th, 2009

Merve is working on an Arduino-driven logic analyzer design in the Arduino Forum. It uses logic chips to drive SRAM memory during acquisition, the Arduino then dumps samples from the SRAM via a shift register. We're really interested in the result of this design. We once attempted a logic chip-based...

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Posted in logic analyzer | No Comments »

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