This brief history of Ethernet is fun: TWISTED: The dramatic history of twisted-pair Ethernet.
TWISTED: The dramatic history of twisted-pair Ethernet
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Category Archives: Learning
Magnetism Detector | Project 12/20 | Maxitronix 20in1 | Learning Electronics In The Lab With Jay Jay
This post is part of my video blog and you can find more information about this video over here.
You can support this channel on Patreon: patreon.com/JohnElliotV
In this video I do the 12th project from the Maxitronix 20in1 (the Sensor Robot 20): Magnetism Detector.
In this project we control a BJT transistor with a magnetic reed switch.
We use the thermal camera to observe heat in the transistors and LEDs during operation.
This is a plain DC circuit with no signals so there was no call for measuring anything with the oscilloscope.
I got myself a little confused about normally open and normally closed circuits during the video, but I think I was clear enough about that in the end.
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!
Yutiars Round Paint Brushes notes |
Let’s go shopping!
Mail Call #15: iPhone 6s, USB Accessories, Software Books, IEC Power Adapters, and More!
This post is part of my video blog and you can find more information about this video over here.
You can support this channel on Patreon: patreon.com/JohnElliotV
In this video I open the stuff that has arrived in the mail recently:
- Original Quality USB Charger Cable for iPhone 14 8 7 6S Plus 13 12 Pro XS Max XR SE Fast Charging Cord Data Sync Line 1m 2m 3m (0.2m)
- USED EX-DEMO | iPhone 6S | 64GB | Space Grey | Unlocked
- The Architecture of Open Source Applications
- 500 Lines or Less
- IEC 320 C14 to C13 Left Right Angle AC Adapter IEC 3Pole IEC 320 3pin Male to Female extend 90 Degree Down Up Angle AC converter (Type 1, 2, 3, 4)
- Universal IEC320 C13 C14 to C5 C6 C7 C8 C19 C20 C21 Convert Connector UPS PDU Male to Female EU US power plug adapter Socket (C14 to C5 and C14 to C7)
- 8pcs CPU IC Glue Remover Phone Repair Tool C Chip Repair Thin Blades Piratical Repair Hand Tool For Mobile Phone Computer
- NEWACALOX 4 PCB Circuit Board Holder with Strong Magnetic Base for Soldering Repair, Modeling, DIY, Jewelry and Hobbies
- USB Tester DC Type-C PD Digital Voltmeter Amper Voltage Current Monitor Ammeter Detector Power Bank Charger Capacity Meter 6.5A
- PP Cutting Mat Workbench Patchwork Cut Pad Sewing Manual DIY Knife Engraving Leather Cutter Board Single Side Underlay (A5 green)
- Power Bank Charger Indicator 4-30V USB Color Screen Digital Display Voltage Current Charger Detector
- Blue 10CM/20CM/30CM USB 3.0 Extension Cable Type A Male to Female (3x 10cm; 2x 20cm; 3x 30cm)
- RIDEN AT35 5 digits USB 3.0 color LCD Voltmeter ammeter voltage current meter multimeter power bank USB Tester ⭐
I mention that I’m working on a new book teardown for God Created the Integers.
The epaper modules I’m working with are these ones: 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 and the microcontrollers I’m experimenting with are these ones: WeAct ESP32 ESP-32 ESP32C3 ESP32-C3FH4 Development Board Wireless WiFi Bluetooth-compatible Module Micropython.
The Arduino Nano you see is one of these: Mini / Type-C / Micro USB Nano 3.0 With the bootloader compatible Nano controller for arduino CH340 USB driver 16Mhz ATMEGA328P connected to an OLED display like this: 1.3″ OLED Display Module White/Blue Color Drive Chip SH1106 128X64 1.3 inch OLED LCD LED IIC I2C Communicate.
The video I mention about the test clips is this one: Unboxing #9: Unboxing of Sudake SDK07 and SKD08 IC Clip SMD Gripper Test Probe | In The Lab.
If you’re interested in the old iPhone 6s you can find more information at Wikipedia: iPhone 6s or from Apple: iPhone 6s – Technical Specifications.
My iPod touch is 7th generation, you can get more info from Apple: iPod touch (7th generation) – Technical Specifications.
I mention that I listen to di.fm. If you’re into electronic music, check it out.
I keep my notes which I display on my bench iPhones on the web, over here: https://www.jj5.net/display/
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!
3ELIGHTING 10″-26″ VESA Wall Mount |
Let’s go shopping!
ESP-NOW instead of WiFi
Today I learned about ESP-NOW over here: Forget WiFi! This Wireless Method is WAY Better?
This looks like exactly what I need for a project I’m planning. I want to connect my WiFi router with a relay between its power source. I can then trip the relay to reboot the router. I need to do this every couple of months and doing it manually is a pain because I have to walk into the other room to do it.
Trick Out Your Excel Quick Access Toolbar with these Hidden Powerful Features
This was less cool than I thought it might be. Still worth watching though. Trick Out Your Excel Quick Access Toolbar with these Hidden Powerful Features.
Firefox Video Speed Controller
Today I installed the Video Speed Controller for Firefox. Let’s see how this goes!
These are the controls:
- S – decrease playback speed.
- D – increase playback speed.
- R – reset playback speed.
- Z – rewind video by 10 seconds.
- X – advance video by 10 seconds.
- V – show/hide controller.
1968 “Mother of All Demos” with Doug Engelbart & Team (1/3) [re-mastered]
This is awesome! It’s an old demo from IBM from back in 1968: 1968 “Mother of All Demos” with Doug Engelbart & Team (1/3) [re-mastered].
Stuff Made Here
Today I discovered a new YouTube channel Stuff Made Here. They had this fun video: What if we made a camera that sees in reverse?
Homework
This is a part of the homework feature of my blog, which is an ongoing conversation with my mate S.F.
Hey mate. Lovely to see you again, as always.
First, two things from last time which I forgot to write up:
I mentioned Veritasium which is a video blog of interest.
I have a note here that says “ASI”. And that’s all it says. Not sure what that was about?
I did consider writing my response to Mark Fisher‘s work Capitalist Realism (which is available on the web here), but in researching him and his work this evening I have learned that he died by suicide in 2017. I think suicide is the worst thing ever and I can’t bring myself to write something which tears strips off people who are no longer here to respond. (I intend to read Mark’s PhD thesis Flatline constructs: Gothic materialism and cybernetic theory-fiction.)
You mentioned Pick of the Litter, noting that dogs are trained to sometimes ignore the command of their master, particularly when it wouldn’t be safe.
One good thing about arguments with friends is that there is always time to pee.
Norvig’s Law: Any technology that surpasses 50% penetration will never double again (in any number of months).
This marketing dude Rory Sutherland is actually quite impressive. I hadn’t expected as much from someone in advertising! He has given a number of TED talks and there are many interviews with him on YouTube.
The documentary about the 2008 financial crisis that I mentioned was Inside Job. Not to be confused with the TV series with the same name (which is excellent, by the way).
My favorite philosopher of the day is Iain McGilchrist. I suspect my own beliefs and preferences diverge from those of McGilchrist but I do really enjoy his thought. I have watched a number of interviews with Iain McGilchrist. He has written a number of books, a few of which I have purchased and intend to read: The Matter With Things: Our Brains, Our Delusions and the Unmaking of the World, The Master and His Emissary: The Divided Brain and the Making of the Western World, and The Divided Brain and the Search for Meaning.
The book Thinking, Fast and Slow by psychologist Daniel Kahneman demarcates two systems of thinking: one fast and automatic, the other slow and deliberative.
The quotation “the stupid are cocksure, while the intelligent are full of doubt” is variously attributed (including to Bertrand Russell).
Check out Mr Inbetween, it’s really excellent!
Love you my brother, see you on Christmas Day! <3
Electronics projects mentioned by friends
Today on IRC some of my friends recommended or mentioned:
Also, honorable mention: Eliza for the Neo6502 running Morpheus firmware and Neobasic.
And there are heaps more boxes at HackerBoxes.