Unboxing #32: Unboxing the Casio fx-991CW ClassWiz Scientific Calculator | In The Lab With Jay Jay

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Silly Job Title: Voltage Virtuoso. I am the Voltage Virtuoso.

In this video we unbox the Casio FX-991CW ClassWiz Scientific Calculator.

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

p.s. today I added ClassWiz 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 Orange Telescopic Magnetic Pickup ToolThis is an image of the product.

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The Art of Computer Programming (TAOCP)

Today I purchased the following ebooks for The Art of Computer Programming (TAOCP) by the venerable Donald Knuth:

Scientific calculators and graphing calculator

Today I got myself two scientific calculators:

One graphing calculator:

And a few books about how to use them:

If you’re interested in such things you might like to check out Developing a Scientific Calculator Easier for Everyone to Use, the story of the Casio ClassWiz models.

I also considered:

On my iPhone I have:


Casio FX-991CW Advanced Scientific Calculator

Casio FX-991CW Advanced Scientific Calculator

TI 36X Pro Scientific Calculator

TI 36X Pro Scientific Calculator

HP Prime G2 Graphing Calculator

HP Prime G2 Graphing Calculator

Mail Call #60: Loot from AliExpress and Amazon | Learning Electronics In The Lab With Jay Jay

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Silly Job Title: Conductor Captain. I am the Conductor Captain!

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

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

p.s. today I added UART and TTL 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 Telescopic Magnetic Pickup With LightThis is an image of the product.

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Mail Call #59: Loot from AliExpress and Amazon | Learning Electronics 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: Grounding Genius. I am the Grounding Genius!

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

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

p.s. today I added 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 3pcs Drill Scrub BrushThis is an image of the product.notes

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Mail Call #58: Loot from AliExpress, Amazon, and Seagate | 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: Cable Connector. I am the Cable Connector!

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

In the video I mention about my Peak Electronic Design Atlas DCA75 Pro Semiconductor Analyzer.

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

p.s. today I added Seagate 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 Blue SpudgersThis is an image of the product.

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Electronics Project #29: STC15W204S series MCU LED Hourglass Project | 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: Phase Pharaoh. I am the Phase Pharaoh!

In this video we build our 5V Electronic Hourglass DIY Kit Funny Electric Production Kits Precise With LED Lamps Double Layer PCB Board 84*40mm.

If you’re interested in this project be sure to check out Program the STC15W201S MCU in an led Hourglass kit and its related resources. You can also read about the microcontroller over here: STC15W204S series.

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

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

We use the Pro’sKit SS-331H Desoldering Pump for desoldering.

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

We use the Yizhan Digital Microscope to take a close look at our MCU.

We use the EEVblog BM2257 Digital Multimeter to test some diodes.

We use the Bysameyee Head-Mounted Magnifier to illuminate our workspace.

We use the nmsafety Nitrile Gloves for hand protection.

We use the Multicomp Pro MP701033 Resistor Decade Box as our variable resistor.

We use the Scotch Titanium Scissors for cutting.

We use the Carpenter Mechanical Pencil for notes.

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

We use the Plato Model 170 Wire Cutter for lead trimming.

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 Yizhan, MCU, and DIY 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 Baking Digital ThermometerThis is an image of the product.

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Electronics Project #27: Space Drop Handheld Game | 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: Current Curator. I am the Current Curator!

In this video we follow the instructions to build the Space Drop handheld computer game which you can buy in kit form from here: Space Drop Solder Kit.

The kit comes with the software preinstalled on the D1 Mini microcontroller, but in this video we replace the code with our own version of the code just to see if we could. And we could! Our code is here: Space_Drop.ino.

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

We use the Pro’sKit SS-331H Desoldering Pump to remove the OLED screen which I accidentally installed without the spacer.

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

We use the Bysameyee Head-Mounted Magnifier for magnification.

We use the Scotch Titanium Scissors to chop up the packaging for scrap-booking.

We use the Hakko CHP 3C-SA Precision Tweezers for holding solder off cuts.

We use the Plato Model 170 Wire Cutter to snip off 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 OLED 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!

DUTRIEUX 14pcs Hexagonal Socket SetThis is an image of the product.

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Mail Call #56: Tools and Components from AliExpress | Learning Electronics 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: Amp Alchemist. I am the Amp Alchemist!

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

The integrated circuit for the TXS0108E logic level converters is labelled: YF08E 7BKG4 D7SL.

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

p.s. today I added 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 IC Extractor Claw IC Chip Pickup ToolThis is an image of the product.

Let’s go shopping!