This is fun.
Hacking a cheap Temu router
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Category Archives: Testing
Buy 12 Broken Ryzen CPUs for $10 Each and repair them for profit?
I was very impressed with how enterprising this guy is! Most just needed their pins straightened out, a few needed new pins, and two were salvaged for parts (i.e. pins).
1986 Sinclair Spectrum+2 repair
In this video I learned about the Metcal PTTC-706 soldering iron tips. I must save my pennies so I can buy myself a pair of these babies!
Learning the Art of Electronics: 1L.5 The Diode | Learning Electronics In The Lab With Jay Jay
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This post is part of my video blog and you can find more information about this video.
Silly Job Title: Terminal Tactician. I am the Terminal Tactician!
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 test a 1N914 diode.
The circuit we build is this:
And the charts we make are these:
This demonstrates that as we increase the voltage into our diode the current increases exponentially.
We reverse the polarity of the diode to see what happens and we observe that only a very small leakage current of 0.4 µA flows.
We use the Riden RD6006 Bench Power Supply to supply 5V for our test circuit.
We use the EEVblog BM2257 Digital Multimeter to measure voltage.
We use the Fluke 17B+ Digital Multimeter to measure current.
We use the Carpenter Mechanical Pencil to make 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! :)
p.s. today I added Riden, EEVblog, Kaisi, and Multimeter, to my spell check.
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 4K HDMI USB 3.0 HDMI To USB Adapter |
Let’s go shopping!
The “Secret Code” Key | Project 9/30 | Maxitronix 30in1 | In The Lab With Jay Jay
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This post is part of my video blog and you can find more information about this video.
Silly Job Title: Earth Grounder. I am the Earth Grounder!
In this video we do the 9th project from the Maxitronix 30in1 Electronics Project Lab Kit: The “Secret Code” Key.
We use the Rigol MSO5074 Mixed Signal Oscilloscope to examine the buzzer tone signal.
We use the UNI-T UTi260B Thermal Imager to check thermals (there are none to speak of).
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 Guitar String Ruler |
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Capacitive sensors as an alternative to resistive sensors
Over on YouTube @elewizard shows us how to make a capacitive sensor for the water level for a pot plant. He also shows us how to use a 555 timer and an MCU to measure small capacitances by the frequencies they generate.
Today I added capacitive, and capacitances to my spellcheck!
This 8-Bit Commodore PET Was Hard To Fix
I have a new post on Hackaday: This 8-Bit Commodore PET Was Hard To Fix.
Maker Advent Calendar 2025 #12: RGB LED Strip! | Learning Electronics In The Lab With Jay Jay
You can support this channel on Patreon: patreon.com/JohnElliotV
This post is part of my video blog and you can find more information about this video.
Silly Job Title: Energy Maestro. I am the Energy Maestro!
In this video we do the twelfth and final project from The 12 Projects of Codemas.
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 395nm UV Lamp notes |
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Maker Advent Calendar 2025 #11: OMG OLED! | Learning Electronics In The Lab With Jay Jay
You can support this channel on Patreon: patreon.com/JohnElliotV
This post is part of my video blog and you can find more information about this video.
Silly Job Title: Operation Manager. I am the Operation Manager!
In this video we do the eleventh project from The 12 Projects of Codemas.
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 Corner Cutter |
Let’s go shopping!
Maker Advent Calendar 2025 #10: Breaking Beams! | Learning Electronics In The Lab With Jay Jay
You can support this channel on Patreon: patreon.com/JohnElliotV
This post is part of my video blog and you can find more information about this video.
Silly Job Title: Luminary Luminar. I am the Luminary Luminar!
In this video we do the tenth project from The 12 Projects of Codemas.
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!
3ELIGHTING 10″-26″ VESA Wall Mount |
Let’s go shopping!