This is a note for Future John. Today I got two new RM12-9HR REMCO VRLA Batteries for each of two PowerShield Defender 1600VA UPS systems. The RM12-9HR batteries are 8.5 Ah 12 V batteries I paid AU$65 each for four of them.
Today installed my replacement UPERFECT 4K Portable Monitor 15.6” UHD IPS 3840×2160 USB C Monitor HDR FreeSync from UPERFECT. This is a small form factor 4K display which I use as the third 4k monitor on my primary workstation. I use it for displaying notes and reference material, mainly this:
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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:
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Yum Cha Guitar String Ruler |
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Silly Job Title: Buzz Boss. I am the Buzz Boss!
In this video we take a look at what has arrived in the mail from AliExpress, Amazon, and DirtyPCBs.com.
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p.s. today I added DirtyPCBs, SPI, EEPROM, Cardputer, GPIO, LoRa, Meshtastic, NAND, and AVR to my spell check.
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Wozniak Solder Lugs notes |
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Silly Job Title: Lightning Tamer. I am the Lightning Tamer!
In this video we unbox the FNIRSI HRM-10 Internal Resistance Tester.
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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!
FNIRSI FNB58 Type-C USB Cable Tester |
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Silly Job Title: Bench Master. I am the Bench Master!
In this video we unbox our ELP New 4K 60FPS Webcam USB 3.0 IMX678 Low Light Streaming Camera with 10X Zoom 5-50mm Lens for PC CCTV Video Conference AI which has recently arrived in the mail from AliExpress. I got the model with the 5-50mm CS Lens.
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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!
HDmatters 4K HDMI USB 2.0 4-Port HDMI KVM |
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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 Set notes |
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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.
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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 Crowbar |
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Silly Job Title: Charge Changer. I am the Charge Changer!
In this video we take a look at what has arrived in the mail from Amazon and AliExpress.
I mention in the video about the September 2026 edition of Silicon Chip magazine. I am reading Fundamentals of Solid State which you can purchase for AUD$40 on the Silicon Chip website from the bottom of this page. In the video I say that it dates back to 1979, but actually it dates back to 1984. Close enough! If you’re not into paywalled content they have some free downloads including The Internet – What’s In It For You?, When I Think Back 1, and When I Think Back 2.
The cheatsheet I mention is Periodic Table Advanced. I have a bunch of these QuickStudy cheatsheets.
The stuff from Amazon is:
The stuff from AliExpress is:
If you’re interested in the CH341A programmer you might like to learn how to mod it for low voltage.
The various current sources, voltage references, and transistors which arrived in the mail today were the purchases I made for the equipment we looked at from The Art of Electronics.
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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 Octopus Soldering Third Hand |
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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.
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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 Light notes |
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