Category Archives: Hardware
Archer Semiconductor Reference and Application Handbook, 1978 edition (1978)
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Silly Job Title: Phase Pharaoh. I am the Phase Pharaoh!
In this video we take a look at the Archer Semiconductor Reference and Application Handbook, 1978 edition. This old book from Radio Shack outlines their semiconductor portfolio as it was in 1978.
This book is available online over here: https://archive.org/details/archer-semi-1978-ed
In the video I accidentally skipped over a few pages: 14 and 15 and 40 and 41 and 44 and 45 and 50 and 51.
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Yum Cha Probe Tweezers notes |
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The Sunrise-Sunset Light | Project 7/30 | Maxitronix 30in1 | In The Lab With Jay Jay
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Silly Job Title: Systems Architect. I am the Systems Architect!
In this video we continue to work through our Maxitronix 30in1, today doing project #7: The Sunrise-Sunset Light. In this project we see how an electrolytic capacitor can control and NPN transistor. By varying the resistor and capacitor we can change the timings of the circuit.
We use the EEVblog BM2257 Digital Multimeter to measure current and voltage.
We use the Kaisi S-160 45x30cm Repair Mat as our workspace.
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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!
Yum Cha IC Extractor Claw IC Chip Pickup Tool![]() |
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What Happens When You Pump 30,000 Watts Into A Tungsten Incandescent Light Bulb?
I have a new post on Hackaday: What Happens When You Pump 30,000 Watts Into A Tungsten Incandescent Light Bulb?
Learning the Art of Electronics: 1L.4.1 Internal resistance of the movement | In The Lab
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Silly Job Title: Tech Lead. I am the Tech Lead!
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 the internal resistance of our meter movement.
We use the METCAL PS-900 Soldering Station for soldering.
We use the Pro’sKit SS-331H Desoldering Pump to desolder (unsuccessfully).
We use the Riden RD6006 Bench Power Supply to provide 1V power for testing.
We use the Fluke 17B+ Digital Multimeter to measure current/voltage/resistance.
We use the EEVblog BM2257 Digital Multimeter to measure current/voltage/resistance.
We use the Brother P-Touch D210 Label Maker to label our circuit.
We use the Sharp EL-546L Scientific Calculator to calculate our values.
We use the ElectroCookie PCB Prototype Solderable Breadboard to make our circuit on.
We use the Multicomp Pro MP701033 Resistor Decade Box to provide test resistances.
We use the WilliamKlein Music Stand to hold our textbook.
We use the Carpenter Mechanical Pencil to take notes.
We use the Hakko CHP 3C-SA Precision Tweezers for tweezering.
We use the Plato Model 170 Wire Cutter to cut wires and trim leads.
We use the Kaisi S-160 45x30cm Repair Mat as our workspace.
The circuit I make in this video for interfacing the meter movement is JJ001:

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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!
Fluke 17B+ Digital Multimeter![]() |
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Module Monday #9: HW-103 Water Level Sensor Module | Learning Electronics In The Lab With Jay Jay
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Silly Job Title: Wire Whisperer. I am the Wire Whisperer!
Today is Module Monday.
In this video we take a look at the Smart Electronics Soil Moisture Hygrometer Detection Humidity Sensor Module For arduino Development Board DIY Robot Smart Car.
The code for this Arduino sketch is here: 2025-12-01-HW-103-Water-Level.ino.
We use the METCAL PS-900 Soldering Station for soldering.
We use the Yizhan Digital Microscope to take a close look at our module.
We use the ElectroCookie PCB Prototype Solderable Breadboard to make our LED traffic lights circuit.
We use the Hakko CHP 3C-SA Precision Tweezers for tweezering.
We use the Plato Model 170 Wire Cutter as a wire cutter.
We use the Kaisi S-160 45x30cm Repair Mat as our workspace.
Errata: at t=22:58 I say I need smaller “capacitors” but what I meant is smaller “resistors”.
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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!
Yum Cha 16MP USB Camera![]() |
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A Deep Dive Into Using PIO And DMA On The RP2350
I have a new post on Hackaday: A Deep Dive Into Using PIO And DMA On The RP2350.
Electronics Project #23: Banana Plug Into Hook-Clips | In The Lab With Jay Jay
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Silly Job Title: Watt Wizard. I am the Watt Wizard!
In this video we make six cables: connecting banana plugs to hook clips. In order to do this we cut three banana plug cables in half and solder on hook clips to each half, leaving us with six cables.
We use the METCAL PS-900 Soldering Station for soldering.
We use the EEVblog BM2257 Digital Multimeter for continuity testing.
We use the Hakko CHP 3C-SA Precision Tweezers for twezzering.
We use the Plato Model 170 Wire Cutter to cut wire.
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!
Maxitronix 500in1 Electronics Project Lab Kit notes |
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The Transistor and “Amplification” | Project 6/30 | Maxitronix 30in1 | 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: Switch Sleuth. I am the Switch Sleuth!
In this video we continue to work through our Maxitronix 30in1, today doing project #6: The Transistor and “Amplification”. In this project we see how an NPN transistor acts as an amplifier.
The HFR trigger coupling I use at the end of the video is called High Frequency Reject, it hides high frequency components from the triggering system and in this case fixed our triggering issue. I haven’t used HFR trigger coupling before. The Rigol user manual for the MSO5000 series doesn’t explain the feature, it just says: “HFR: rejects the high frequency components”.
We use the Rigol MSO5074 Mixed Signal Oscilloscope to examine our input and output voltages, and also to provide a test sine wave for input.
We use the UNI-T UTi260B Thermal Imager to look at the thermals, but there wasn’t anything really to see.
We use the UNI-T UTG962E Signal Generator to provide an input signal, but we couldn’t get it to work properly so we used the signal generate from the scope instead.
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!
3ELIGHTING 10″-26″ VESA Wall Mount![]() |
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The Busch Electronic Digital-Technik 2075 Digital Lab From The 1970s
I have a new post on Hackaday: The Busch Electronic Digital-Technik 2075 Digital Lab From The 1970s.





