I’m reading Software Design for Flexibility: How to Avoid Programming Yourself into a Corner which in its Appendix B has a description of the Scheme programming language. Rather hilariously the first line on page 394 is a sentence with unbalanced parentheses. I mean… unbalanced parentheses in the Scheme language description! :)
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Silly Job Title: Ohm Oracle
Old Book: Electric Circuits by J. Richard Johnson published 1984 with 888 pages.
Today we pop open a few bags of stuff that has arrived in the mail.
I mention about the trouble I had with my Western Digital Purple drives.
I mention about my new Western Digital Black 1TB NVMe M.2 SSD WDS100T3X0E drives.
I mention about my Educational 555 PCBs which have arrived from PCBWay. The website of the designer is given as: basitelektronikprojeler.blogspot.com.
The systems of units mentioned in the old book Electric Circuits are discussed at MKS system of units and Centimetre–gram–second system of units.
The 256GB M.2 NVMe drives I got to use as my ZFS L2ARC cache are these: TOSHIBA KIOXIA 256GB BG5 NVMe SSD M.2 2280 – NEW GEN4.
The automotive fuses I got are these ones: Car Fuse Blade Fuse Kit Fuses Automatic Truck Blade The Fuse Insurance Insert Insurance of Xenon Piece Lights Auto Accessories.
The test clips I got are these ones: 10X Universal Chip clamp micro IC clamp SOP SOIC TSOP MSOP SSOP SMD IC Test Clip pin Socket Adpter Programmer for logic analyzer.
The book which arrived in the mail was The SCSI Bus and Ide Interface: Protocols, Applications and Programming (2nd Edition) by Friedhelm Schmidt published 1997 with 396 pages.
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OULLX NSS-681HDMI-RJ45 Cable Tester notes |
Let’s go shopping!
Mail call!
This post is part of my video blog and you can find more information about this video on this show’s homepage which is here.
You can support this channel on Patreon: patreon.com/JohnElliotV
Silly Job Title: Grounding Genius
Old Book: Industrial Electronics Reference Book by Electronics Engineers of the Westinghouse Electric Corporation published 1948 with 680 pages.
Today we teardown a homemade continuity tester which I put together for use before I had a multimeter, so that was in the early days of my new lab, circa August 2021.
While I was preparing the links for this blog post I discovered that the plastic case I used for the continuity tester was the HB5610 Black Hand-held Electronic Enclosure from Jaycar. I purchased one of these for AU$9.95 back in August 2021, which was around the time that I made this continuity tester.
I subsequently purchased a ten pack of similar plastic cases from AliExpress for AU$64.55 (inc shipping) in March 2022. I went to find the AliExpress listing so I could link you to it, but it’s an old listing and has been taken down. I did search for an equivalent product but didn’t find what I was looking for. The dimensions are roughly 70mm x 135mm x 24mm and there is a facility for 2x AA batteries built in.
The multimeters I use/mention in this video are:
The multimeter I mention I want to get is this one: EEVblog 121GW Multimeter.
What I say in the video about active vs passive piezoelectric buzzers is correct. The active buzzer will do the buzzing for you, all you need to do is supply some power. The passive buzzer will need an input signal in addition to power, so some sort of oscillator if you want to generate a tone.
I knocked up a schematic for this continuity tester, something like this:
I’m gonna try getting some PCBs made for this circuit from PCBWay, because I’m still trying to learn everything I can about that process!
Thanks very much for watching! And please remember to hit like and subscribe!
Following is a product I use picked at random from my collection which may appear in my videos. Clicking through on this to find and click on the green affiliate links before purchasing from eBay or AliExpress is a great way to support the channel at no cost to you. Thanks!
FNIRSI M328 Component Tester |
Let’s go shopping!
Today I discovered Intel Processors and Chipsets by Code Name while I was reading about Cascade Lake which was released back in 2019.
Today I was referred to Cory Doctorow‘s new book: The Internet Con: How To Seize the Means of Computation. Apparently it’s basically just about the idea that web services should interoperate. I’m not going to read this one, but you might?
Just some notes about web pages I was reading today.
Found an old LWN article: Moving interrupts to threads.
Some light reading:
lol. Today I learned that Intel’s PCI Vendor ID is 8086. That’s funny because Intel’s seminal microprocessor was the Intel 8086.