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Category Archives: Design
Learning the Art of Electronics: 1L.2.4.1 Measure Your DVM’s current output in diode test mode | In The Lab
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: Wattage Warlock. I am the Wattage Warlock!
In this video we continue to work our way through Learning the Art of Electronics. In this video we continue with 1L Lab: DC Circuits and measure our DVM’s current output in diode test mode.
We use the Fluke 17B+ Digital Multimeter for voltage and current measurements.
We use the EEVblog BM2257 Digital Multimeter for voltage and current measurements.
We use the Carpenter Mechanical Pencil to take notes.
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!
Yum Cha 9 in 1 Air Quality Meter |
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Exploring The Performance Gains Of Four-Pin MOSFETs
I have a new post on Hackaday: Exploring The Performance Gains Of Four-Pin MOSFETs.
Module Monday #7: HW-028 Rain Drops 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.
You can support this channel on Patreon: patreon.com/JohnElliotV
Silly Job Title: Bench Master. I am the Bench Master!
In this video we take a look at the HW-028 Rain Drops sensor module: Separate PCB Board Raindrop Module Sensor Rising Water Level Detection Module Raindrop Sensor Board. Project doco is here: HW-028.
We found some instructions and tutorials, including these:
- Arduino – Rain Sensor – Servo Motor
- Arduino Modules – Rain Sensor
- Rain drop Sensor Module
- How to use the Raindrop Sensor Module
Also we noted the use of the LM393 comparator on the module.
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!
Galacok 12 Pcs Magnetic Phillips Screwdriver Set |
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Making A Machine To Sort One Million Pounds Of LEGO
I have a new post on Hackaday: Making A Machine To Sort One Million Pounds Of LEGO.
Old Book Teardown #18: Encyclopedia of Electronic Circuits Volume 5 (1994) | In The Lab
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: Switch Switcher. I am the Switch Switcher!
In this video we take a look inside Encyclopedia of Electronic Circuits Volume 5 by Rudolf F. Graf and William Sheets.
Some circuits of interest included:
| Page | Circuit |
|---|---|
| 150 | Bug Detector |
| 224 | IR Pulse Audio |
| 256 | Simple Lie Detector |
| 257 | Chapter 49: Light Comms |
| 326 | Voice Disguiser |
| 373 | Chapter 61: Moisture and Fluid Detectors |
| 554 | Speech Scrambler |
| 556 | Chapter 93: Sound Effects |
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!
Yizhan Digital Microscope notes |
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Learning the Art of Electronics: 1L.2.3.1 An experiment: Try your DVM’s resistance measurement | In The Lab
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: Surge Sage. I am the Surge Sage!
In this video we continue to work our way through Learning the Art of Electronics. In this video we continue with 1L Lab: DC Circuits and do an experiment: try your DVM’s resistance measurement.
Today we do some experiments to determine the voltage used by our DVM when it is in resistance-measuring mode.
We use the Fluke 17B+ Digital Multimeter to measure resistance and voltage.
We use the EEVblog BM2257 Digital Multimeter to measure resistance and voltage.
We use the Multicomp Pro MP701033 Resistor Decade Box as our variable resistor.
We use the Carpenter Mechanical Pencil to take notes.
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!
Yum Cha Magnetic Claw Pickup Tool notes |
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Module Monday #6: GY-521 MPU-6050 Gyroscope/Accelerometer 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: Electricity Guardian. I am the Electricity Guardian!
Today is Module Monday.
In this video we take a look at the 10/1pcs GY-521 MPU-6050 MPU6050 Module 3 Axis analog gyro sensors+ 3 Axis Accelerometer Module MPU6500 6Axis GY-6500.
The code for this Arduino sketch is here: 2025-11-10-GY-521-MPU-6050-Gyro.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!
Yum Cha Baking Digital Thermometer |
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Electronics Project #21: DIY Telegraph Machine | 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: Joule Juggler. I am the Joule Juggler!
In this video we assemble the Children’s Science Technology Small Production Diy Telegraph Machine in the Science Experiment Equipment Stem Education Model.
The instructions were easy enough to follow, given they are in Chinese! We get the two circuits working perfectly. Really impressed with this one, it works like a charm! Didn’t do any range testing or what not, I’m going to do this one again when my little people come to visit.
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!
MROOFUL Carpenter Mechanical Pencil |
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2025 Component Abuse Challenge: Using Inductors To Steal Power From Qi Wireless Charging Base Station
I have a new post on Hackaday: 2025 Component Abuse Challenge: Using Inductors To Steal Power From Qi Wireless Charging Base Station.