Tag Archives: In The Lab With Jay Jay

Burglar Alarm | Project 11/20 | Maxitronix 20in1 | Learning Electronics In The Lab With Jay Jay

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In this video I do the 11th project from the Maxitronix 20in1 (the Sensor Robot 20): Burglar Alarm.

This project uses the reed switch to trigger a bistable multivibrator that controls an alarm. The bistable multivibrator can be reset with the key. An astable multivibrator is used to generate the tone for the audible alarm.

In this project we get some more experience with transistors and how they can be used in various types of multivibrator circuit. Under the thermal camera we can see some of the transistors warming up as they conduct electricity. With the oscilloscope we can see the periodic waveform used to generate the alarm tone.

Note: while I was making this video I needed to make some banana plug to hook clip cables (so that I could test the reed switch). I made a video of my making those cables which you can see here: Electronics Project #9: Making Banana Plug to Hook Clip Cables | In The Lab With Jay Jay.



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Electronics Project #9: Making Banana Plug to Hook Clip Cables | In The Lab With Jay Jay

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Silly Job Title: Outlet Overlord

In this video I make a few cables. I connect test hook clips to banana plugs.

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Yum Cha Dual-Purpose Sanding StickThis is an image of the product.notes

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Demo #2: Resistor Box Banana Plug Modding and Demo | Learning Electronics In The Lab With Jay Jay

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In this video I mod a pair of resistor boxes by installing banana plug terminals in place of the lug terminals they came with and then I give a quick demo of them.

In the demo we connect them in both series and parallel and then measure their resistance with my Fluke multimeter.

I mention this video from Dave Jones on the EEVblog: EEVblog #1020 – Is A $7 LCR / Component Tester Any Good? which is where I found out about the RS-201W resistor box which he has. I searched on eBay for RS-201W but what I found for over US$1,000 (inc shipping) was way too expensive: IET Labs RS-201W Wide Range Precision Resistance Substituter.

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Yum Cha 11 in 1 USB-C Hub USB HubThis is an image of the product.

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Mail Call #10: Thanks Craig! Also loot from AliExpress | In The Lab With Jay Jay

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In this video I receive Engineer’s Mini Notebook Volume II – Science and Communication Circuits & Projects all the way from the USA from my friend (and mentor (and reader (and viewer (and patron (and Lisp hacker))))) Craig. Thanks Craig! <3

I mention that the October 2024 edition of Silicon Chip magazine is out.

I mention that I recently got my symbol keyboard working on Linux! Pretty happy about that! These are the extra keys that I have at my workstation now: ° ± § λ Δ Σ Π Ω ε µ π θ

I also get a bunch of stuff from AliExpress, including:

And yes, despite confusion, I did get three lots of two different kinds of hard brushes, and yes, I did end up saying the wrong thing in the video! Can’t take me anywhere.

Oh, and as I mention in the video I am from a beautiful part of the world known as the Blue Mountains. It’s pretty hot here today!

In the end my collection of Arduino boards includes:

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Wozniak Solder LugsThis is an image of the product.notes

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Old Book Teardown #10: Digital Systems: Hardware Organization and Design (1973) | In The Lab

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Silly Job Title: Component Wrangler

In this video I take a look at Digital Systems: Hardware Organization and Design by Fredrick J. Hill and Gerald R. Peterson published in 1973:

Here is the laundry list of links to things which came up during this video, including a few duplicates:

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Rigol PLA2216 Compatible Logic ProbeThis is an image of the product.notes

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Mail Call #9: Tools and Equipment from Jaycar, Amazon, and AliExpress | In The Lab With Jay Jay

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In this video I go through what arrived in the mail recently.

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Yum Cha Multifunction Hook ToolsThis is an image of the product.

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Demo #1: How to Use All the Features of the Fluke 17B+ Digital Multimeter | In The Lab With Jay Jay

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In this video I take a look at how to use all of the features of my new Fluke 17B+ Digital Multimeter.

This is the inaugural demo video. We now do an ‘unboxing’ and a ‘demo’ separately. In the demo videos we try to take a close look at each feature of a product. Whereas with the unboxing we just make a record of the unboxing experience and take a cursory look at a few features.

If you’re interested in the Fluke 17B+ then in addition to watching this demonstration video you might also like to see the unboxing: Unboxing #14: Unboxing of Fluke 17B+ Multimeter | Learning Electronics In The Lab With Jay Jay.

The slides for this video are here: https://www.jj5.net/fluke-17b-plus/

In the video we cover:

  • high current fuse test
  • low current fuse test
  • AC voltage measurement
  • DC voltage measurement
  • DC millivolts measurement
  • AC current measurement
  • DC current measurement (including milliamps and microamps)
  • continuity testing
  • diode testing (with forward bias measurement)
  • resistance measurement
  • capacitance measurement
  • temperature measurement
  • frequency measurement (10 Hz to 400 kHz)
  • duty cycle measurement (of regular sine wave)
  • relative measurement feature
  • measurement hold feature
  • backlight usage
  • min/max measurement

We were lead astray by the slide for the current test which indicates the wrong terminal for the current measurement! I got these slides from Fluke in the 15B/17B/18B | Quick reference guide on the Manuals+resources tab on their documentation for the Fluke 17B+ Digital Multimeter. So it is pretty disappointing that the official Fluke documentation led me astray like that! But we figured it out in the end so all is well that ends well.

Errata: at around the 24 minute mark I try to introduce a load across my 9 V AC input voltage but I don’t correctly wire it in. So when I think I’m testing with a load attached there is in fact no load attached.

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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 Long Handle Wire BrushThis is an image of the product.notes

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Electronics Project #8: Debugging the Symbol Keyboard Mini Project JMP001 | In The Lab With Jay Jay

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Silly Job Title: Component Wrangler

In this video I add improved debouncing logic to the inaugural Silicon Chip and Jaycar Mini Project: JMP001.

Shout out and thank you to Tim Blythman for developing this project.

You can see Tim’s original code and my updates which improve the debouncing implementation.

In the video I mention that we use the pgmspace.h header from Arduino.

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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!

Maxitronix 500 In 1 (500in1) Electronics Project Lab KitThis is an image of the product.notes

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