I was watching PART 3 : All You Need To Know About SMD Capacitor Markings Codes To Fix Stuff and I discovered this web page for capacitor markings and codes.
Capacitor Markings and Codes
Reply
Category Archives: Electronics
Make: Guide to Boards
Mail call!
Electronics Project #2: Teardown of Homemade Continuity Tester | In The Lab With Jay Jay
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:
- OWON XDM1041 Bench Multimeter (notes, AU$188.51, February 2022)
- ANENG AN-999S Bench Multimeter (notes, AU$157.04, February 2022)
- DigiTech QM1323 Multimeter (notes, AU$64.95)
- DT830B Digital Multimeter (notes, 5x AU$5.45, July 2023)
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!
ATmega fuse bytes
A quick search for arduino fuses programming turned up a bunch of results:
Gameboy Rabbit Hole
This evening I fell into a gameboy rabbit hole:
AliExpress Shopping
Spent AU$50 picking up some bits and pieces during AliExpress’s latest sale.
PCBWay: Educational 555 Board
I got an email from one of the marketing people from PCBWay who said they could offer me free PCB printing services in exchange for a review of their service on my blog. I am very happy to do that!
Today I signed up for an account over here: https://www.pcbway.com/Member/Login/
The signup process was extremely painless: email address, password, terms of service, privacy policy, done.
(Note: I am not a lawyer, but I did read the ToS and privacy policy, and basically they claim the rights to your design files for various purposes and might transfer your data over an insecure network. I think these services are fine for hobbyists dealing with open hardware, but if you’re a commercial entity dealing with higher value intellectual property or larger volumes you might like to get legal advice before engaging.)
After logging in I got an email confirmation code emailed to me. I updated my account settings including my basic information and contact information so they know where to ship my PCBs. In exchange for my having filled out my full profile they gave me US$35 worth of vouchers with various terms (e.g. minimum spend).
I then used their shared project service to search for a 555 timer circuit that would meet my requirements. I found this one: Educational 555 Board.
I clicked “Add to cart” and accepted all the defaults (shown below) on my order for 5 PCBs. So far I am a happy customer! (Update: as part of our sponsorship deal PCBWay covered the shipping costs too! I was a bit worried they might ask me to cover the shipping, but they included it, which was super excellent, especially as the shipping was about five times as much as the boards themselves!)
I’m just getting started with PCB printing. I expect that in future I will do much more of it. I have been working my way through PCB design with KiCad – updated for KiCad 7 to learn how to design PCBs using KiCad. Apparently there is a PCBWay Plug-In for KiCad, so that might be something worth checking out.
When my PCBs from PCBWay arrive I will make a video of me putting together the 555 timer circuit and then using it to test my IC test probes. Stay tuned for that one!
Intel Processors and Chipsets by Code Name
Today I discovered Intel Processors and Chipsets by Code Name while I was reading about Cascade Lake which was released back in 2019.
TQFP100, TQFP64 and TQFP48 starter boards
Today while watching EEVblog 1580 – MacGruber Mailbag I discovered the Jon Newcomb universal SMD breakout boards, there’s more info and links to purchase here: http://www.jnewcomb.com/
Interlude #1: Mail Call! Cheap Stuff From China! | Learning Electronics In The Lab With Jay Jay
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: Science Officer
Today we’re gonna take a look at what arrived recently from AliExpress. They were having a sale so I purchased some natty tools and a few consumables. Details below. I made some notes at the time of purchase if you’re interested in what I paid for this stuff.
In the video I refer to the workstation I am planning to buy for the studio. When I get this new computer I should be able to improve the quality of my YouTube videos. If you’re interested in the details the new computer I’m planning is ‘victory‘. In the video I say this new computer will cost me AUD$6,000, but it’s looking like it will cost more like AUD$7,500 (roughly USD$5,000), so I will have to save my pennies! The Dell OptiPlex computer that I am presently using is ‘wonder‘.
In the video I refer to “box openers”. If you know what these things are actually called, please do let me know!
The spider who popped up on my bench during the recording of this video was found later. He, um, didn’t make it…
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!
Sudake SDK08 Test Clips notes |
Let’s go shopping!