Logic Analyzer with 1GHz Sampling Rate

Today I was pleased to discover this: DreamSourceLab DSLogic U3Pro32 USB-Based Logic Analyzer with 1GHz Sampling Rate, 2Gbits Memory, USB 3.0 Interface, 32 Channels.

There are some notes from the manufacturer over here: DSLogic Series USB-based Logic Analyzer.

It’s a logic analyzer which can operate at 1GHz that’s within my price range. I’m not rushing off to buy this thing, but it is certainly on my list.

The only other thing I have seen that compares to this logic analyzer is this RIGOL DS70304/DS70504– Digital Oscilloscope 3GHz/5GHz 4 Channel 20GSa/s 2Gpts 1000000 wfms/s which is roughly two orders of magnitude more expensive.

6 Horribly Common PCB Design Mistakes and AppCAD

Today I enjoyed watching 6 Horribly Common PCB Design Mistakes and the follow-up video Design Mistakes You Must Avoid on Your New Electronic Product.

In the first video I learned about AppCAD Design Assistant which is a free tool which boasts a broad bunch of features (and, particularly, it can help you design an antenna on your PCB):

  • S-Parameter Analysis and Plotting
  • Active Circuit Bias Design
  • Cascade Noise and IP3 Analysis
  • Transmission Line Analysis
  • Signals and Systems
  • Complex Math Engineering Calculator

I haven’t used AppCAD yet, but I will check it out soon.

The Problems of Philosophy, further reading

At the end of The Problems of Philosophy, Bertrand Russell says:

The student who wishes to acquire an elementary knowledge of
philosophy will find it both easier and more profitable to read some
of the works of the great philosophers than to attempt to derive an
all-round view from handbooks. The following are specially

Switching diodes and rectifying diodes

I had an envelope full of SMD diodes arrive today. Three different types in three different sizes, so nine bundles. Unlabeled!

I’m not sure what they were thinking at the shop. I got them from here.

I managed to figure out that the ones marked ‘S4’ were the Schottky diodes (1N5819WS). I think the ones labeled ‘T4’ are the switching diodes (1N4148WS) and the ones labeled ‘T7’ and ‘A7’ are the rectifying diodes (1N4007), but I’m not sure of that yet.

I asked ChatGPT for help and it explained how I can devise a test circuit, so that’s on my TODO list for tomorrow.

Planning to succeed

I was sitting here in my lab this morning and reflecting on all the things I want to do in it. The thing about getting things done is they don’t get done unless you actually take the time to do them. A book will happily sit unopened on your bookshelf for your entire life if you don’t take the time at some point to pick it up and read it.

In this light I thought perhaps I might stand more of a chance of actually completing some of my projects if I put some structure around getting them done. To that end I have one specific activity to do for each day of the week:

  • circuit day (make a Maxitronix circuit or similar)
  • programming day (write some code, pick a project, there are lots)
  • old book day (review and document an old book)
  • Xbox day (recap an Xbox, or work on an otherwise broken one)
  • writing day (write something, e.g. work on my book, a long form blog post, etc)
  • new book day (read and document a new book)
  • holiday! (watch a movie! play a game!)

On circuit day and Xbox day I will make a video of the activity and publish on In The Lab With Jay Jay. The outputs from the other activities are not video but a lot of that will end up on the web somewhere too.

The sub-pattern is:

  • Video
  • Writing
  • Reading

I repeat that twice in one week and then give myself a day off.

Traditionally I’m very bad when it comes to having structure in my life, so I can only hope that this attempt to introduce some structure actually works out… wish me luck!