I have a new post on Hackaday: Making RAM For A TMS9900 Homebrew Computer
Making RAM For A TMS9900 Homebrew Computer
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Category Archives: Notes
Resistor vs Capacitor vs Inductor
Learning the Art of Electronics: Fig-1N.6: Kirchhoff’s Voltage Law | In The Lab With Jay Jay
This post is part of my video blog and you can find more information about this video.
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Silly Job Title: Plugerinerer. I am the Plugerinerer!
In this video we continue to work our way through Learning the Art of Electronics. In this video we finish the first chapter 1N DC Circuits.
Today we do some experiments to verify Kirchhoff’s Voltage Law.
We use the Riden RD6006 Bench Power Supply for power.
We use the Fluke 17B+ Digital Multimeter to measure current.
We use the EEVblog BM2257 Digital Multimeter to measure voltage.
We use the EEVblog BM036 Digital Multimeter to measure current.
We use the Sharp EL-546L Scientific Calculator to crunch some numbers.
We use the Multicomp Pro MP701033 Resistor Decade Box for variable resistance.
We use the Carpenter Mechanical Pencil to make our notes.
We use the Kaisi S-160 45x30cm Repair Mat as our workspace.
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Wozniak Solder Lugs notes |
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HTTP Verbs
You only need GET (and its little brother HEAD) and POST. Whether operations on a resource are idempotent or not is something that you might like to change. Send all operations through POST which will apply business logic and don’t use PUT or DELETE. Simple.
Record-Breaking Robots At Guinness World Records
I have a new post on Hackaday: Record-Breaking Robots At Guinness World Records.
Module Monday #4: KY-035 Analog Hall Effect Sensor Module | In The Lab With Jay Jay
This post is part of my video blog and you can find more information about this video.
You can support this channel on Patreon: patreon.com/JohnElliotV
Silly Job Title: Buzz Boss. I am the Buzz Boss!
In this video we take a look at the 1-10pcs KY-035 Analog Hall Magnetic Sensor Module 49E For Arduino.
You can learn more about the Hall effect which is basically a magnetism detector.
The code for this Arduino sketch is here: 2025-10-27-KY-035-analog-hall-effect.ino.
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!
Damotk 5pcs Crevice Cleaning Brush notes |
Let’s go shopping!
Use Same Push Button for Turning ON/OFF and other Functions
DRV8833 Motor Driver
Over on one of my recent Hackaday articles I was referred to this article: DRV8833 Motor Driver. It discusses using MOSFETs as an alternative to BJTs for driving motors, thereby being more efficient.
A Simple $25 Robot Based On The ESP32
I have a new post on Hackaday: A Simple $25 Robot Based On The ESP32.
TVS Diodes
Oh man. Today I recorded a whole Mail Call video for the channel and at the end realized the microphone was off the whole time! Boo. Anyway. I was going to put some notes about my TVS diodes in the show notes, but as there is no longer going to be a show, I’m just making some notes here.
The TVS diodes I have I got here: DIP SMD Zener Diode Fast Switching Schottky TVS Diode Assorted Kit 1N4007 1N5408 FR207 1N5819 1N5822 1N4148 10A10 M7 SS14 2V-47V.
Particularly I ordered 210Pcs One way and 210Pcs Two way. I have stored both types in the same component drawer, by their ratings. The one-way devices have a polarity band and use the ‘A’ suffix on the component code; the two-way devices have no polarity band and use the ‘CA’ suffix.