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Topics - jack.gassett

Open Bench Logic Sniffer / OpenBench Logic Sniffer 3.07 "Demon" Core Release
OpenBench Logic Sniffer Version 3.07 is now available for download at the new Logic Sniffer information portal.

For more information take a look at the Release Notes.

This release was generated with the new cross platform build system located at Github. There are full and partial releases for both Windows and Linux. Mac OS X is soon to follow.

Please note that the information portal is still a work in progress. If you have any ideas or suggestions please respond here or drop by the Gadget Factory IRC channel.
Open Bench Logic Sniffer / Cleanup, Source Reorg, and Multi-platform releases.
I've received a lot of amazing feedback since starting the Gadget Factory IRC channel. The things that people are saying really need improvement are:

    Multi-Platform Support
    Better Organization
    Easier to find where the information is

As a first step I've started with organizing/cleaning up the source code. I also propose moving over to Github for hosting the source code, the easy collaboration this affords is well worth the effort. In the process of moving the code to Github we will implement a directory structure that is a little easier to understand. Ian and I are also going to start talking about how we can make the information easier to find, right now it is very confusing, I'm personally never sure if I should be looking at Gadget Factory or Dangerous Prototypes when I need to find something.

For the Multi-Platform support, I spent some time thinking about the best way to accomplish that goal and realized that we can reuse the Arduino build system to quickly and easily get up and running. The Arduino IDE is a Java based app just like ours is, if we just modify their build scripts we can quickly accomplish multi-platform support without re-inventing the wheel.

So along these lines I've got the Arduino build system working for Windows and have checked it into a new repository at Github. Right now the build system only builds Jawi's Client and the OLS_Upgrader script for Windows. Over the next couple of days I will continue to work on getting all of the source code checked in and builds for Windows, Linux, and OS X working.

We should have an automated Multi-Platform build system in place very soon if all goes well. Please keep watching the Github repository for progress, and any suggestions are welcomed. Once the kinks are worked out we will make an official 3.06 release and going forward we will be positioned to make releases much more frequently. Between the automated system and all of the amazing contributions we have been getting I think we are about to see some exciting improvements to the OLS.

Open Bench Logic Sniffer / Test Release 3.06 - Demon Core
Here is a package that eliminates the hassle of getting up and running with the latest "Demon" Core. Included is Jawi's latest client and an upgraded version of the OLS Upgrader. The OLS Upgrader will step you through the process of upgrading your OLS to the newest firmware. As a bonus the OLS Upgrader has been upgraded to work under both Windows and Linux.

For more information visit the Gadget Factory blog posting.

Note: Linux users will need dialog, fw_update, and ols-loader in their path.
Open Bench Logic Sniffer / OpenBench Logic Sniffer in stock at Gadget Factory.
There is a batch of OpenBench Logic Sniffers hot off the pick and place and ready for sale over at Gadget Factory.

We are starting to ramp up with production of OLS boards over at Gadget Factory to make North American orders quicker and to ease shortages while Seeed Studio is out of stock.

As always, the profit is shared between Dangerous Prototypes and Gadget Factory. Purchasing directly from Gadget Factory allows Ian and I to make a couple more dollars per board sold and is always appreciated.

Open Bench Logic Sniffer / New Windows Installer to streamline the installation process. Version 2.12a
Here is a new Windows Installer for the OpenBench Logic Sniffer.

The neat thing about this installer is that it will automatically install the OLS device drivers for first time users. I was unable to test the driver installation on a 64 bit Intel box so if anyone sees any problems please respond to this post.
  • Installs the original Sump Java client and Jawi’s excellent alternative Logic Sniffer client.
  • Automatically installs the Windows Device Drivers for the OLS.
  • Places shortcuts on the Start Menu to Documentation, User Guide, and Tutorial Videos.
  • Includes a menu based OLS upgrader that streamlines the upgrade process.
DSO Wing / I think we might be a little expensive.
I'm attaching the cost analysis and the numbers are pointing to a suggested price of $62.
  The suggested price is based on the following:
  Sheet 2 shows the same type of cost analysis done for the Arduino. The   Arduino has a 70% markup when 1K quantities are used, I always try to   match that number since it should be safe to assume that is what our   market will support. Going below that means that when it comes time to   make a discount for resellers our margin goes below 50%, in my mind that   is bad because that means the resellers make much more money then we do   (remember we split our portion of the markup).
  Assembly costs are not included because I don't have any way to know what the Arduino assembly costs are.
  If we ignore the suggested price and go with $49.99, which matches the Flashy price, then we have a markup of 63% and if we give a 30% discount   to resellers then we have a 47% markup.
  So I think if we are ok with a $49.99 price then we should see if we can squeeze out any better pricing on parts somewhere.
  What do you guys think?
Open Bench Logic Sniffer / New Gadget Factory website and broken links.
We made some pretty significant changes to the Gadget Factory website which had the unavoidable side effect of breaking some links. I've gone through and updated all of my forum posts and the wiki with the new links but there are still probably some more out there. Please respond here if you see any links that look out of order.

In the meantime links can be corrected by simply changing any links from to

Sorry for the inconvenience.

Open Bench Logic Sniffer / New videos recorded to help anyone interested in working on the Sump VHDL code.
A couple videos were recorded and posted to the OLS project page with the intention of helping anyone who wants to modify the Sump VHDL code get oriented. The videos can be viewed here: ... dapp_id=28

There are 4 overview videos that just give a brief tour of the project. (Be sure to click the "Read More" link to see all 4 videos)

There is one video that covers TODO item #20 that is open in the project tracker:
We are trying to create a single bitstream that can dynamically change its memory configuration based on the channel groups that are selected in the client. Currently the end user has to load one bitstream to select 8 channels with a memory depth of 24K and another bitstream for 32 channels with 6K samples. We want to make it as simple as deselecting memory groups. ... item_id=20

I'm very interested to hear any ideas people have about making it easier to contribute code and participate in improvements. A couple things I've been thinking about are:
-Moving from svn to git to make distributed development a little easier.
-Making better use of the trackers on the project page for feature requests and direction of what still needs to be done. ... c/tracker/
Open Bench Logic Sniffer / Test Release 2.03 and 2.04 - SPI mode.
EDIT by ian: Please see the test upgrade guide for further instructions, and to test for the bootloader.

Here's a list of the most recent releases, the files attached to these posts are old.


We have two new test releases ready, both of them use SPI mode and will require an update of the PIC firmware and the FPGA-ROM. For those without a bootloader we will need to figure out how to get bootloaders installed before these test releases can be used.

Test Release 2.03 takes the standard 32bit4kinside bitstream and replaces the UART communications between the PIC and the FPGA with SPI communications. It speeds things up and will hopefully eliminate the communication issues people have been seeing. Please note that we have not really made any attempts yet to make it fast but you should see a speed increase, it will probably be much faster when we tune it.

Test Release 2.04 still uses the SPI mode but adds some goodies and a new version of the Java client. The Java client has an option to select the inside or outside numbering scheme and it also adds a test mode. If a ribbon cable is connected between the two headers and test mode is selected a test pattern can be captured. There is also a first attempt at enabling multiple memory configurations. If channel group 2 and 3 is disabled then 8k of memory depth should be available. If all channel groups are enabled then 4k of memory depth is available.

Please note that I have not done much testing at all with these releases and I'm hoping for help finding any issues.