Category Archives: Diary
Probability
Module Monday #4: KY-035 Analog Hall Effect Sensor Module | In The Lab With Jay Jay
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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.
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Damotk 5pcs Crevice Cleaning Brush notes |
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Module Monday #3: KY-031 Knock Sensor Module | 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.
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Silly Job Title: Connector Kingpin. I am the Connector Kingpin!
In this video we take a look at the Knock Sensor Module For Arduino 3Pin KY-031 Percussion Knocking Knock Sensor Module Diy Starter Kit KY031.
The demo code is here: 2025-10-20-KY-031-Knock-Sensor.ino.
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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!
14500pa Cordless Hand Held Vacuum![]() |
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Why your intelligence makes it impossible to take action
Living the life
Module Monday #2: KY-002 Vibration Switch Module | 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.
You can support this channel on Patreon: patreon.com/JohnElliotV
Silly Job Title: Amp Alchemist. I am the Amp Alchemist!
In this video we demo the KY-002 Vibration Switch Module. There’s more info here: KY-002 Vibration Switch Module on ArduinoModulesInfo.
Source code is here: 2025-10-13-KY-002-Vibration-Switch.ino.
We use the Rigol MSO5074 Mixed Signal Oscilloscope to check the output signals.
We use the Riden RD6006 Bench Power Supply for power.
We use the EEVblog BM2257 Digital Multimeter to test voltage.
We use the Kaisi S-160 45x30cm Repair Mat as our workspace.
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!
Aussishop Calipers notes |
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Milestone for In The Lab With Jay Jay: 2,000 subscriptions
I just hit 2,000 subscriptions on the main channel! Next stop: 3,000.
Old Book Teardown #16: Encyclopedia of Electronic Circuits Volume 3 (1991) | In The Lab
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Silly Job Title: Prime Hack. I am the Prime Hack!
In this video we take a look inside Encyclopedia of Electronic Circuits Volume 3 by Rudolf F. Graf.
Some circuits of interest included:
| Page | Circuit |
|---|---|
| 245 | Electronic Dice |
| 327 | Adder |
| 337 | Electrostatic Detector |
| 594 | On/Off Inverters |
Some things we needed to look up while flipping through:
CMRR is Common-Mode Rejection Ratio.
RIAA is Recording Industry Association of America.
RIAA equalization is a specification for the recording and playback of phonograph records, established by the Recording Industry Association of America (RIAA).
PUT is a Programmable Unijunction Transistor.
φ (phi) can represent an angle, typically the second angle mentioned, after θ (theta).
PEP is Peak Envelope Power.
For voltage signals you usually want high input impedance and low output impedance.
LVDT is a Linear Variable Differential Transformer.
NAB is North American Broadcasters. They defined phonograph standards similar to the RIAA’s.
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!
JYHealth Medical Digital Thermometer![]() |
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Negative Resistance
Today I watched Single Transistor Blinker: The Magic of Negative Resistance. It recommends the book Troubleshooting Analog Circuits.



