Archive by Author

An Update about D’Asaro Designs and a New Product

Dear Customers – First, I want to thank you all for your support and purchases since I first started selling my original Commodore PET ROM adapters in 2010. That was when I was still an undergraduate at the University of Washington in Seattle (Go Huskies). When I went for graduate school at MIT (Go Beavers) […]

Skil (Skilsaw) 1616 Chainsaw repair

This project is a bit out of the ordinary for what I usually work on, but now that I have moved back to Seattle, my “services” are called upon sometimes to help with some upkeep around my folks’ place. Last winter a large limb came down in the back yard and I offered to help […]

Reopening Delay

Loyal customers – I am sorry, but getting set back up after the move is taking longer than expected. Reopening will be delayed until at least the middle of March. I apologize for any inconvience this may cause. Matthew

Cleaning the encoders in Agilent 33220A Function Generators

Do you have an Agilent 33220A function generator? If so, you may well have experienced an annoying problem where the control knob does not operate smoothly – the number on the display doesn’t change when the knob is turned, changes erratically, or even changes in the wrong direction! Well, this is actually a very easy […]

A New Version of the 2006Prog is Here!

After selling out of the original 2006Prog SDA-2006 EEPROM programmers, I have released a new rev. 1 version. The major change is that the programmer socket is now unpowered except when the programmer is actively reading or programming a chip, reducing the risk of damage when a chip is inserted with the programmer turned on. […]

A Quick Fix for Tektronix TLA5000 Series Logic Analysers

I was recently tasked with repairing fourteen Tektronix TLA5202 logic analysers, part of a classroom set used for a VLSI class. Although over ten years old at this point, these are still very capable machines and are worth several thousand dollars on the used market, so they are usually well worth fixing. Figure 1 shows […]