I’m just about to kickoff with more note taking for my Learning the Art of Electronics project. Am aiming to have the video for the first lab ready for Tuesday.
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Electronics Project #11: TJ-56-428 4-Digit Digital DIY Clock Take 2 | 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
Silly Job Title: Wattage Warlock.
In this video we build the TJ-56-428 4-Digit Digital Clock just like we did last time.
You read that right. We made one of these before and I liked it so much that we are making one again! I get better at it this time round, I don’t make any of the mistakes I did last time.
In the introduction to this video I mention about my new Blu-ray player which I got so I could watch Colossus: The Forbin Project. Both my Blu-ray disc and my Blu-ray player are for Region B.
As I mention I have been writing for Hackaday! So that’s been keeping me busy.
The instructions for this clock are over here: TJ-56-428 4-Digit Digital DIY Clock (same as last time).
I mention about the new Learning the Art of Electronics project which we’re just about to get started with.
The microcontroller in this clock is the STC15W404AS. It comes in the kit pre-programmed and I’ve not been able to find the software anywhere. Bummer. If you know where to get the software please do let me know!
The temperature controlled resistor is a 10K NTC thermistor which seems to be used for the room temperature function (which I don’t use and didn’t calibrate).
The crystal oscillator is spec’ed as 32768 which is obviously a reference to the clock frequency. See Why do we use 32.768 kHz crystals in most circuits? We check the impedance of this device in the video using the Peak Atlas LCR45.
In the video I mention my mate Joe who helped me out last time I did this project. Thanks Joe!
We use the METCAL PS-900 Soldering Station to do our soldering.
We use the Fluke 17B+ Digital Multimeter to test the voltage on our USB power adapters.
We use the EEVblog BM2257 Digital Multimeter to check our resistors.
We use the Peak Electronic Design Atlas DCA75 Pro Semiconductor Analyzer to test the crystal (we don’t get a reading, which was expected).
We use the Peak Electronic Design Atlas LCR45 LCR Meter to test our crystal. It gives us an impedance reading at 200kHz with both real and imaginary components.
We use the Hakko CHP 3C-SA Precision Tweezers to hold our solder and poke about. At one point I drop a component lead offcut into the board and it shorted two resistors, so lucky I found it and pulled it out!
And that’s everything to know about this project!
Here’s a photo of the completed project installed next to the symbol keyboard on my desk:
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 DT830B Digital Multimeter notes |
Let’s go shopping!
Happy snap
My lab makes me happy. Here’s a photo taken this evening.
Mail Call #28: EEVblog BM036, Test Hook Clips, 4mm to 2mm Banana Adapter, a Book and a Movie
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 see what’s come in the mail!
- EEVblog BM036 AC/DC Clamp Meter
- 20CM High Efficiency Test Hook Clip Logic Analyzer Cable Gripper Probe Test Clamp Kit For Chips Pins Connecting Testing
- Gold Plated 2MM Small Male Banana Plug To 4MM Female Jack Connector Adapter
- Principles of Electronic Circuits 2nd Edition
- Colossus – The Forbin Project [Region B] [Blu-ray] – DVD – New
Also mentioned in this video:
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 USB 3.0 Powered 4-Port USB Hub |
Let’s go shopping!
Power for XR2206 and ICL8038 signal generators
Mail Call #27: Calibration Circuits, Battery Holders, Analog Meters and More from AliExpress
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 open the following in the mail from AliExpress.
- AD584 Reference Voltage Source 10V Voltage Reference AD584JH AD584LH AD584KH / Resistor Capacitor Board Calibration Multimeter (AD584LH, Resistor Board)
- 60pcs Silver M3-M12 304 Wire Thread Insert Repair Kit Set Stainless Steel Spiral For Hardware Repair Tools Easy Install
- 10pcs 5V 1A 18650 Lithium Battery Charging Board TP4056 Lithium Charging Mini/Micro USB Type C Charge Module With Protect (10pcs type C)
- 18650 Battery Case Holder with Wire Bundle,10PCS DIY Battery Storage Boxes, 18650 1 Bay Cell Battery Holder, 1 Slots 10pcs (10pcs)
- ESP32-C3 SuperMini WiFi Bluetooth-Compatible Board ESP32 C3 SuperMini Development Board IOT Board for Arduino (Welded)
- 5pcs Type C PD2.0 PD3.0 Fast Charge Trigger Polling Detector USB Boost Power Supply Change Module Charger Board Diymore
- 10Pcs 30V Diagnostic Tools Multimeter Test Lead Extention Back Piercing Needle Tip Probes Car Automotive Test Probe Kit 0.7MM (Mixed 4pcs)
- 0.91 Inch OLED Module 0.91″ White/Blue 128X32 OLED LCD LED Display Module IIC Communicate for Ardunio (White, Blue)
- ESP32-C3 OLED development board with 0.42 inch OLED module ceramic antenna ESP32 supermini development board wifi Bluetooth
- ESP32-C3 MINI Development Board ESP32 SuperMini Development Board ESP32-C3 Development Board WiFi Bluetooth Expansion Board (1 Set)
- MECHANIC Aax-17 tin positioning tweezers for precise clamping of tin wire, non-slip and wear-resistant, made of stainless steel
- 91C4 Class Ampere Analog Panel Meter Ammeter 2.5 Accuracy DC 50uA 100uA 200uA 300uA 500uA High Quality (100uA)
- 91C4- mA DC Pointer type milliammeter 1mA 5mA 10mA 50mA 100mA 200mA 300mA 500mA Analog Mechanics Plate table Ammeter (1mA, 10mA, 100mA)
- 91C4 Ammeter DC Analog 1A 2A 3A 5A 10A 20A 30A 50A 100A 200A 300A 500A Panel Mechanical Pointer Type Amper Meter Current Meter (1A)
- DC Ampere Meter 91C4 Ammeter 1/2/3/5/10/20/30/50/100/200 A V Voltmeter Analog Panel Meter Mechanical Pointer 91C4 Ammeter (5V, 10V, 15V)
- JX 1PCS BNC Male Plug to Dual Hook Clip Alligator Clip Banana Plug Test Lead for For oscilloscope/multimeter (No 1, No 2, No 3)
As I mention in the video I learned about the AD584LH and Resistor Board over here: Brymen BM789 Unboxing and Review.
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 100pc Titanium Plated Drill Bits notes |
Let’s go shopping!
Demo #8: Unboxing and Product Review of Rown Fusny R03U Wireless Mono Headset | 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 unbox and demo the R03U Wireless Mono Headset sent to me for review by Rown Fusny. This headset supports wireless connectivity for both USB and Bluetooth. I really enjoyed using this product and their customer support was first class.
It’s a mono device which means it only has a speaker for one ear, which is really good for your situational awareness because you can hear what’s going on in your environment through your other ear. Both the headphone and the microphone worked properly in both USB and Bluetooth mode.
I wasn’t able to get the USB mode to work on my Windows 10 machine, but I don’t know if that was related to the USB hardware on that computer or if it had to do with Windows 10 support for the device. I was able to get USB mode working on a Windows 11 Pro computer and one of my Debian 12 (bookworm) computers. I tested the Bluetooth mode on both iPhone 6s and iPhone 8.
One thing that I needed explained to me was that after you pair your Bluetooth device you may need to double click the power button on the headset in order to toggle from USB mode over to Bluetooth mode in order to activate the device. That’s why I had to contact customer support, because I was confused by this.
The device gives you status updates via audio. So if you toggle to USB mode it says “USB mode” and if you toggle to Bluetooth mode it says “Bluetooth mode”. If you disconnect the USB dongle or unpair the Bluetooth connection it says “disconnected”.
There is a microphone mute button on the headset and there are volume control buttons too. I tested the volume control buttons via Bluetooth but forgot to test via USB… hmm. Gimme a tick. Yep, the volume controls work on USB too!
Overall I was very pleased with this device and I would happily recommend this product!
In preparing this video I made some notes about my headphones which are still available on my wiki.
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 16MP USB Camera |
Let’s go shopping!
Analog Meters for Learning the Art of Electronics
I was flipping through my copy of Learning the Art of Electronics: A Hands-On Lab Course (I have the first edition, this second edition comes out in Australia on 3 April 2025, I have a copy on pre-order, I think it’s already available in the USA) and I noticed that some analog meters are used in the first lab course.
So in preparation for doing that I purchased some analog meters, being these:
- DC Ampere Meter 91C4 Ammeter 1/2/3/5/10/20/30/50/100/200 A V Voltmeter Analog Panel Meter Mechanical Pointer 91C4 Ammeter (5V, 10V, 15V)
- 91C4 Class Ampere Analog Panel Meter Ammeter 2.5 Accuracy DC 50uA 100uA 200uA 300uA 500uA High Quality (100uA)
- 91C4- mA DC Pointer type milliammeter 1mA 5mA 10mA 50mA 100mA 200mA 300mA 500mA Analog Mechanics Plate table Ammeter (1mA, 10mA, 100mA)
- 91C4 Ammeter DC Analog 1A 2A 3A 5A 10A 20A 30A 50A 100A 200A 300A 500A Panel Mechanical Pointer Type Amper Meter Current Meter (1A)
I am planning to start working through these projects on my YouTube channel @InTheLabWithJayJay at a rate of one project every 28 days starting April 1st. April 1st, being April Fools’ Day, is of course the traditional date for launching IT projects and it is also the one year anniversary of my video (which happens to be my most popular YouTube video by a large margin): New Book Teardown #3: Learning The Art of Electronics: A Hands-On Lab Course (2016) | In The Lab.
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 |
Let’s go shopping!
Mail Call #26: Headset from Rown Fusny and Electronics from AliExpress | 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
Update: if you’re interested in the Rown Fusny headset I do a demo video over here: Demo #8: Unboxing and Product Review of Rown Fusny R03U Wireless Mono Headset | In The Lab.
In this video we take a look at what has arrived in the mail recently from AliExpress:
- TJ-56-428 4-Digit Digital DIY Clock Kits with Acrylic Shell, DIY Alarm Clock Soldering Practice Kit for Learning Electronics
- WeAct ESP32 ESP-32 ESP32C3 ESP32-C3FH4 Development Board Wireless WiFi Bluetooth-compatible Module Micropython
I also mention my headset which arrived from Rown Fusny which we will be looking at together in a future video.
The equipment I got from Jaycar included:
- 220 Ohm 0.5 Watt Metal Film Resistors – Pack of 8
- 1M Ohm 0.5 Watt Metal Film Resistors – Pack of 8
- Duinotech Arduino Compatible Temperature Sensor Module
- LM311 Voltage Comparator Linear IC
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 HD Webcam with Mic USB Camera |
Let’s go shopping!