Mail Call #64: Loot from AliExpress & Amazon, ELP-U3 USB Camera, Spanners and More! | In The Lab

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Silly Job Title: Cable Commander. I am the Cable Commander!

In this video we take a look at what has arrived in the mail from AliExpress and Amazon:

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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!

SUNSHINE Hard Brush SetThis is an image of the product.notes

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Learning the Art of Electronics: Fig-2N.4 Constant Current Ramp | 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: Circuit Breaker. I am the Circuit Breaker!

In this video we continue working through Learning the Art of Electronics. Today we build the circuit from Fig-2N.4 which is a manually switched constant current ramp.

The constant current sources we’re using are these: LT3092 Adjustable Precision Current Source Module, 200mA / 500mA Adjustable Constant Current Source Module, LED Driver.

The other constant current sources I have but that we aren’t using today are these: LT3092 Adjustable Constant Current Source Module 200mA Continuous Adjustable Constant Current Output, Sensor Drive Power Supply.

The box I put everything is the 82x52x35mm-Black box from here: 70/100mm DIY Electrical Enclosure Box Electronic Project Case White Black Grey Instrument Storage Junction Controller Box.

The spanners I mention that I purchased recently are these: 3mm Ultra-thin Open Box Dual-purpose Wrench Set 6-24mm Stainless Steel Spanner Metric Ratcheting Combination Wrench Kit with Bag (6-24mm 12pcs kit).

We use the Rigol MSO5074 Mixed Signal Oscilloscope to investigate Vout.

We use the METCAL PS-900 Soldering Station for soldering.

We use the AiXun H314 Hot Air Gun for heat shrink.

We use the MUIN Solder Fume Extractor to clear the air.

We use the Yizhan Digital Microscope for close ups.

We use two Riden RD6006 Bench Power Supplies to provide positive and negative power.

We use the EEVblog BM2257 Digital Multimeter for continuity testing.

We use the Brother P-Touch D210 Label Maker for labeling.

We use the nmsafety Nitrile Gloves for hand protection.

We use the ENGINEER PA-09 or PA-21 Crimping Tool for crimping.

We use the Hakko CHP 3C-SA Precision Tweezers for tweezering.

We use the Plato Model 170 Wire Cutter to cut, cut, cut.

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!

DTBD WrenchThis is an image of the product.

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Unboxing #36: Unboxing the MESTEK EMF02R EMF Meter | 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: Energy Elicitor. I am the Energy Elicitor!

In this video we take a look at my new MESTEK EMF meter which I purchased recently from AliExpress: Mestek Emf Meter Electromagnetic Field Radiation Detector Rechargeable Counter Emission Dosimeter for Mobile Phone and Computer. I got the EMF02R model.

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 CrowbarThis is an image of the product.

Let’s go shopping!

Unboxing #35: Unboxing the HP Prime CAS Graphing Calculator | 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: Spark Specialist. I am the Spark Specialist!

In this video we unbox our HP Prime graphing calculator.

Thanks very much for watching! And please remember to hit like and subscribe! :)

Update: there was some confusion when I made this video. I ordered the G2 model but when it arrived I couldn’t find any G2 branding on my device so I mistakenly thought I had been sent a G1 instead. In fact I had not. I did in fact receive a G2, it’s just that the G2 branding was very subtle and I missed it. The only indication seems to be a small “G2” on the back under the HP logo. Also I heard that the G2 model came with a USB-C connection, but that is wrong. My G2 has a USB-Micro connection, which I believe is standard.


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!

MECHANIC UV Curing LightThis is an image of the product.notes

Let’s go shopping!

Mail Call #62: Loot from AliExpress, Amazon, and eBay | 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: Phase Phaser. I am the Phase Phaser!

In this video we take a look at what arrived in the mail:

Thanks very much for watching! And please remember to hit like and subscribe! :)

p.s. today I added BNC, BNC-SMA, Xylitol, html, Thermocouple, CAS, LCR, Brushless, IGBT, Triode, PWM, LiPo, LiFe/em>, NiMH, and NiCd 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 Half Round Nose and Half Groove PliersThis is an image of the product.

Let’s go shopping!

CH341A Programmer

Update: there is conflicting information on the interwebs regarding the “fix” for this programmer. Some people say you should do it. Other people say it isn’t necessary. You decide!

Today I watched You Need This $10 Flash Programmer, But It Needs This Fix Before You Use It! and I picked up a few from AliExpress:

The video references thingino.com, which has firmware for cameras with Ingenic SoC.

Unboxing #34: Unboxing the Sharp EL-506TS Scientific Calculator | 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: Digital Dancer. I am the Digital Dancer!

In this video we unbox the Sharp EL-506TS scientific calculator. In this video I also mention about my Casio fx-991CW and my Sharp EL-546L.

The constants used in the calculator are taken from CODATA Recommended Values of the Fundamental Physical Constants: 2018 which is an impressive scholarly work.

I am sorry for the poor focus and zooming in this video. I have ordered a new camera which should help me to minimize issues like this in future videos.

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!

Oudisi 9-inch 16 in 1 Wire StripperThis is an image of the product.notes

Let’s go shopping!

Unboxing #33: Unboxing the ZeenKo LiteVNA64 Vector Network Analyzer | 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: Electron Enchanter. I am the Electron Enchanter!

In this video we unbox the ZeenCo LiteVNA64 Vector Network Analyzer.

The specifications from the manufacturer are here: LiteVNA.

The user manual is here: LiteVNA User Guide.

You can download manuals, firmware, and software from here: LiteVNA Google Drive.

A related open-source software project is NanoVNA-Saver.

The books I have been reading to learn about the technology include A guide to the NanoVNA and What is Smith chart. Also “S-Parameter Techniques” by Hewlett-Packard.

Thanks very much for watching! And please remember to hit like and subscribe! :)

p.s. today I added NanoVNA 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 Metallic Craftwork PenThis is an image of the product.notes

Let’s go shopping!