Tag Archives: Interlude

Interlude #18: Measuring Forward Voltage of LEDs of Various Colours | 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: …

In this video we use our Peak Electronic Design Atlas DCA75 Pro Semiconductor Analyzer to measure the forward voltage of ten different LEDs which I keep in stock.

In the following table the values are computed for VS = 5V and I = 20mA.

Size Colour VF VR RS
10mm RED 1.890 3.110 156
10mm GREEN 2.030 2.970 149
10mm BLUE 2.643 2.357 118
10mm YELLOW 1.939 3.061 153
10mm WHITE 2.615 2.385 119
5mm RED 1.889 3.111 156
5mm GREEN 1.995 3.005 150
5mm BLUE 2.710 2.290 115
5mm YELLOW 2.019 2.981 149
5mm WHITE 2.775 2.225 111
VS
Supply voltage, e.g. 5 V.
I
Desired LED current in milliamps, e.g. 20 mA.
VF
Forward voltage, as measured; e.g. 1.8 V.
VR
Voltage across resistor = VS – VF.
RS
Series resistance to use, in Ohms = VR / I.

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Yum Cha 13-in-1 Multi-function Digital Display USB Voltage Current Power MeterThis is an image of the product.

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Interlude #17: Another False Start for Learning the Art of Electronics | In The Lab With Jay Jay

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Silly Job Title: Current Curator.

In this video we make our second false start on Learning the Art of Electronics.

I mention about Make: magazine.

The power electronics YouTuber I mention is @ElectrArc240.

We consider using the Maxitronix 300in1 Electronics Project Lab Kit to for our project but we end up settling for a smaller breadboard.

We use the UNI-T UTi260B Thermal Imager to investigate the thermal properties of our powered circuits.

We use the Fluke 17B+ Digital Multimeter to measure voltage and current.

We use the EEVblog BM2257 Digital Multimeter to measure voltage and current.

We use the EEVblog BM036 Digital Multimeter to measure current.

We use the Peak Electronic Design Atlas DCA75 Pro Semiconductor Analyzer to examine our diodes.

We use the ANENG AN-999S Bench Multimeter to measure current.

We use the Riden RD6006 Bench Power Supply to provide power for our experiments.

We use the Carpenter Mechanical Pencil for writing out notes.

We use the Hakko CHP 3C-SA Precision Tweezers for working with small components.

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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 6pcs Wire BrushThis is an image of the product.notes

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Interlude #16: False Start for Learning the Art of Electronics | In The Lab With Jay Jay

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Silly Job Title: Lightning Tamer.

This project’s homepage is here: John’s wiki § Learning the Art of Electronics.

This video is me making a false start on the Learning the Art of Electronics series which I am just about to embark on. What happened was after I got a bit more than two hours into recording the video for the first lab exercise I realized that it was taking too long with my approach. I didn’t want to make another twelve hour video! I was planning to go through the literature in painstaking detail and cover everything, but it turned out there was way too much material for that approach to be feasible.

What I am planning to do instead for the actual first video (due out next Tuesday) is do all the reading by myself in advance and then offer a brief summary and some recommended reading. I’m going to try to make the bulk of the video the actual practical experiment/circuit and leave the reading out.

But since I recorded the video for this “false start” I figured there’d be no harm in posting it by itself. Most of this video is the Appendix O material from The Art of Electronics 3ed which is a brief introduction to oscilloscopes.

In this video we mention CMOS technology, particularly MOSFETs.

We mention the Josephson effect which can cause a current to flow across superconductors in the absence of an applied voltage.

The SI size prefixes are documented on my wiki.

In this video we learn about voltage and current.

We take a close look at Appendix O in AoE which introduces the oscilloscope and mentions delay lines.

The oscilloscope appendix makes mention of Asimov’s short story from 1960, Thiotimoline and the Space Age.

We mention quantization, Planck units, and Zeno’s paradox.

I show you can illustration from Getting Started in Electronics.

If you’re planning to follow along with the series the pre-reading for the first video coming out on Tuesday is: E&M ch. 1, 2; PoEC ch. 1; AoE app. A, ch. 1; LtAoE ch. 1N, 1L.

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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!

ANENG A3005 Pen Type Handheld MultimeterThis is an image of the product.notes

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Interlude #15: Making a USB Power Cable for My ATtiny85 from 4x AA Battery Pack | In The Lab

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In this video we make a cable to connect a 6V battery pack with a 9V adapter to a USB Type-A female socket, which we can then use to connect a USB Type-A male through Type-B micro for powering my microcontroller.

We use the METCAL PS-900 Soldering Station to solder our cables.

We use the EEVblog BM2257 Digital Multimeter to test voltage and continuity.

We use the Horusdy Soldering Station with Hot Air Gun to shrink our heat shrink.

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!

Tungfull TH-161 Rotary Tool Accessory SetThis is an image of the product.notes

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Interlude #14: Making BNC to Jumper Pins Cables for My Oscilloscope | In The Lab With Jay Jay

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In this video we make two cables for use with my oscilloscope or other devices with BNC sockets. The cables have a BNC connector on one end and two male jumper pins on the other end. This is so that I can easily connect my oscilloscope (or signal generator) to a breadboard.

Equipment which I might use these new cables with includes my Rigol MSO5074 Mixed Signal Oscilloscope and my UNI-T UTG962E Signal Generator.

In the video we use the METCAL PS-900 Soldering Station for soldering.

We use the EEVblog BM2257 Digital Multimeter to continuity test the cables and to check for shorts.

We use the Horusdy Soldering Station with Hot Air Gun for shrinking out heat shrink.

We use the Hakko CHP 3C-SA Precision Tweezers for pulling the heat shrink over the wire.

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 4K HDMI USB 3.0 HDMI To USB AdapterThis is an image of the product.

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Interlude #13: Assembling the 5-Layer Acrylic Pen Holder | In The Lab With Jay Jay

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In this video we assemble the acrylic pen holder I ordered from AliExpress: Acrylic Pen Holder Pen Holder Pencil Makeup Brush Storage Box Brush Storage Rack In Supermarket Stationery Store School Supplies.

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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!

Logitech Brio USB CameraThis is an image of the product.

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Interlude #12: The Making of the Hook Stick Extension Grabber Thing | In The Lab With Jay Jay

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In this video we put a hook on a stick so I can reach stuff that is high on my pegboard.

In this video I mention Ali the Dazzling and the Star Wars Kid. The wood shop channel I enjoy is Workshop Companion.

We use the Deep Hole Long Nib Pen to mark the points for drilling.

We use the Rockwell RD2971 18V Drill Driver Kit Drill for drilling.

We use the Bosch IXO VI Electric Screwdriver to drive in my screws.

My pegboard hooks are these ones: HORUSDY 120-Piece PegBoard Hooks Set, Peg Board Assortment 12 Different Types of Hooks for Garage Organizer Bins Shop Display Hanging.

We use the 14500pa Cordless Hand Held Vacuum to tidy up after ourselves.

We use the Yum Cha 10pc File & Rasp Set Metal File for filing.

We use the Plato Model 170 Wire Cutter for cutting our string.

The KVM I mention toward the end of the video is my AOOCOO 4K@30Hz HDMI USB 2.0 8-Port HDMI KVM.

If you’re interested in HDMI specs there is heaps of info on the Wikipedia HDMI page.

The monitor I mention toward the end of the video is the UPERFECT 15.6″ HDMI LCD. It’s physically small, but high resolution. I stop using this monitor because I was having trouble making it work with my new KVM and my studio workstation ‘verve‘.

The new component drawers I am getting for the new space on my pegboard are these: Jaycar HB6330 33 Drawer Parts Cabinet

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!

nmsafety Nitrile GlovesThis is an image of the product.notes

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Interlude #11: Playing with WeAct Studio Epaper Modules on ESP32-C3 MCU | In The Lab With Jay Jay

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In this video we play around with the 2.13″ and 2.9″ WeAct Studio Epaper Modules available here: WeAct 2.9” 2.13″ 2.9 2.13 Inch Epaper Module E-paper E-Ink EInk Display Screen SPI Black-White Black-White-Red.

As I mention in the video I was having a hard time getting good solder joints from my Horusdy Soldering Station. This was annoying me so much that I went and purchased a new soldering iron! My new iron is an Metcal PS-900 Soldering Station and I love it! This is what a soldering iron should be!

We use the Arduino IDE and the sample code from WeAct Studio but we don’t successfully load content into our Epaper Module.

We use the Rigol MSO5074 Mixed Signal Oscilloscope to and the Rigol PLA2216 Logic Probe to wire up a Logic Analyzer to instrument out circuit, but we don’t follow through with that in the end. We run out of time. We will try again another day.

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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 58-pcs Stainless Steel Thread Pitch GaugeThis is an image of the product.notes

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Interlude #10: Take Three: Improving My Maker Faire ‘Here There Be Makers’ Badge | In The Lab

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In this video I have a third go at my Maker Faire “Here There Be Makers” badge. You can see my previous attempts here and here

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!

Scotch Titanium ScissorsThis is an image of the product.notes

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Interlude #9: Making a Power Breakout Box | Learning Electronics In The Lab With Jay Jay

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In this video I make a power breakout box. This is for use in testing my new multimeter, but it will be good to have for other uses in future too.

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 Electronic Metal Detector Kit Electronics ProjectThis is an image of the product.notes

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