This in my feed today: The Pentium contains a complicated circuit to multiply by three.
The Pentium contains a complicated circuit to multiply by three
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Category Archives: Design
Interlude #14: Making BNC to Jumper Pins Cables for My Oscilloscope | 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 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 Adapter |
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Creating helpful, reliable, people-first content
Today I found some documentation from Google: Creating helpful, reliable, people-first content.
Voyager bug fix
This is too cool. A core dump then binary patch to work around memory hardware failure 15 BILLION MILES AWAY: How NASA Fixed a Software Bug 15 BILLION MILES AWAY | Voyager 1
Microcontroller display
Here’s an interesting video about integrating a display with your microcontroller: The BASICS of Adding a Display to Your Arduino, ESP32, STM32, or other MCU Project. The graphics library he recommends is LVGL.
Running Linux in PDF
Arduino Keyboard library not working on Debian KDE
Man, I just spent quite a bit of time diagnosing this particular issue.
The problem was that my Symbol Keyboard stopped working. This is a USB keyboard I made from an Arduino Leonardo. The touch screen was working okay, but the keypresses weren’t being delivered over USB.
Long story short, the 7-port USB 3.0 hub attached to my workstation needed rebooting! I disconnected the power supply and disconnected the upstream USB cable to remove both sources of power, then when I reconnected everything my stuff started working again, including my symbol keyboard.
Lesson learned: if you’re debugging a USB device failure try plugging the device directly into the host to avoid any potential issues caused by your hub(s).
It was lucky I had a spare 104-key USB keyboard in the cupboard because I needed one while diagnosing this issue (the Windows box I was using only has a tenkeyless 87-key keyboard plugged into it but the Windows alt-key codes require use of the number pad).
The latest incarnation of my symbol keyboard looks like this:
Concluding Maxitronix 20in1 | 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 we conclude our Maxitronix 20in1.
The videos we made for this feature of the show:
- Introducing Maxitronix 20in1
- Brightness Alarm | Project 1/20
- Darkness Alarm | Project 2/20
- Electronic Candles | Project 3/20
- Light Alarm With Latch | Project 4/20
- Light-Controlled Organ | Project 5/20
- Photometer | Project 6/20
- Shot In The Dark I | Project 7/20
- Shot In The Dark II | Project 8/20
- Visitor Alarm | Project 9/20
- Speech Conductor | Project 10/20
- Burglar Alarm | Project 11/20
- Magnetism Detector | Project 12/20
- Ferromagnetic Substance Detector | Project 13/20
- Non-Touch Switch | Project 14/20
- Glass Organ | Project 15/20
- High-Water Indicator | Project 16/20
- Low-Water Indicator | Project 17/20
- Rain Detector | Project 18/20
- Touch Buzzer | Project 19/20
- Weather Indicator | Project 20/20
- Concluding Maxitronix 20in1
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 Double-ended Cotton Swabs |
Let’s go shopping!
CSS library based on Counter Strike 1.6 UI
This turned up in my feed today: CSS library based on Counter Strike 1.6 UI. I was particularly interested in how they implemented the tab panels.
Mail Call #20: GreatFET One, Cynthion, Mesh Holder, USB Cable, Calculus, KVM and More! | In The Lab
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 we take a look at what has arrived in the mail from AliExpress, eBay, and Amazon.
- Hannord USB3.2 10Gbps Cable USB A to Type-C 3.2 Data Transfer USB C SSD Hard Disk Cable 3A 60W Quick Charge 3.0 Charge Cable
- Advanced Calculus (as mentioned by my mate Learning as a hobby, see also Nicolas Bourbaki)
- KVM Switch 8 Ports, HDMI 2.0 KVM Switcher and USB 2.0 Hub Support 4K@30Hz for 8 PC Share Keyboard, Mouse and Monitor Compatible with Windows/Linux/Mac System etc
- Great Scott Gadgets GreatFET One Bundle – Hi-Speed USB Peripheral, Logic Analyzer, Debugger and Development Board. Open Hardware. Includes GreatFET One, Wiggler, Cable & 120 Prototyping Wires
See here for more info about the Great Scott Gadgets:
In this video I mention my mate @learningasahobby790 who makes interesting videos about mathematics and philosophy, check him out.
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 11 in 1 USB-C Hub USB Hub |
Let’s go shopping!