This is a note for Future John. Our new water jug is a Philips Water Filter Jug AWP2953GNTS2/79. Notes concerning appropriate filters follow.
The Wireless Rain Detector | Project 20/30 | Maxitronix 30in1 | In The Lab With Jay Jay
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Silly Job Title: Power Provider. I am the Power Provider!
In this video we do the 20th project from the Maxitronix 30in1 Electronics Project Lab Kit: The Wireless Rain Detector.
In this video I mention about my copy of Silicon Chip magazine which arrived today, check them out!
We use the Rigol MSO5074 Mixed Signal Oscilloscope to investigate our signals.
We use the EEVblog BM2257 Digital Multimeter to debug the power circuit.
We use the Multicomp Pro MP701033 Resistor Decade Box as our variable resistor.
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!
Wowstick Wowpad Magnetic Screwpad![]() |
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Unboxing #39: Unboxing the TI-36X Pro Scientific Calculator | 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: Master Planner. I am the Master Planner!
In this video we unbox our TI-36X Pro scientific calculator from Texas Instruments.
The books I mention are TI-36X Pro Scientific Calculator Practice Examples and Calculus on the TI-36X Pro Calculator. These books are low quality (lots of errors and omissions) but they’re still useful.
The manual is here: TI-36X-PRO-Guidebook_EN.pdf.
The QR code on the insert goes here: https://education.ti.com/en/select-country/eguides
There’s more information on the Texas Instruments website: TI-36X Pro scientific calculator.
This is the box:
And this is the insert:
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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Learning the Art of Electronics: Fig-2N.12-A Current Integrator | In The Lab With Jay Jay
You can support this channel: patreon.com/JohnElliotV
This post is part of my video blog and you can find more information about this video.
Silly Job Title: Component Wrangler. I am the Component Wrangler!
In this video we continue working through Learning the Art of Electronics. Today we build a current integrator with a capacitor. Before we build our circuit we simulate it using EveryCircuit: LAoE Fig-2N-12-A Current Integrator.
We use the Rigol MSO5074 Mixed Signal Oscilloscope to investigate our waveforms.
We use the METCAL PS-900 Soldering Station for soldering.
We use the MUIN Solder Fume Extractor to clear the air.
We use the Riden RD6006 Bench Power Supply for constant current.
We use the Multicomp Pro MP701033 Resistor Decade Box as our variable resistor.
We use the Hakko CHP 3C-SA Precision Tweezers for tweezering.
We use the Plato Model 170 Wire Cutter to trim component leads.
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 EveryCircuit 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 4pcs 30mm Deep Hole Pen notes |
Let’s go shopping!
Digital Signal Generator PCB
Here’s a fun looking build: Digital Signal Generator PCB. Built around the AVR16EB28 this square wave generator can generate frequencies from 2 Hz to 33.5 MHz in 2 Hz increments.

The Smartest Algorithm No One Uses
How to use QuickSort algorithm to find a median value.
PHP URL
Today while reading My temporary PHP fix from 2014 has nearly 20M installs. Today I’m deprecating it. I learned about PHP 8.5’s New URI Extension: A Game-Changer for URL Parsing.
9 Firmware Shortcuts You Should Never Ship in a Product
More wisdom from John Teel.
Less-Common Features of Multimeters
Some interesting features.
His old Fluke 187 meter has a “nS” mode (nano-siemens) which can give crazy high resistance measurements (up to 100 GΩ) as conductance measurements.
His Fluke 87V has a low pass filter on its AC voltage input.
He explains Lo-Z mode and phantom voltage. It works by putting a thermistor across the input leads.
His old Tekpower TP8250 analog meter has a D.Ω range for measuring low resistances and a NULL mode for indicating voltage direction. His Sanwa EM7000 also has a NULL mode facility.
His Tekpower TP8250 also has a battery mode, which will measure the voltage from a battery with a load attached.
His ANENG AN870 has a Non-Contact Voltage sensing (NCV) mode which does what it says on the tin. My NCV device is a Fluke 1AC-C2-II VoltAlert Voltage Detector.
Old tech books
Some old tech books I probably shouldn’t have purchased:









