Category Archives: Electronics

Project: HX-1021 “Green Lighting” LED Color Small Night Light Kit

Gough’s kit crusade continues with this HX-1021 “Green Lighting” LED Color Small Night Light kit, costing just AU$2.73 including postage. This one was incorrectly listed on eBay as a “mains motion light”, but the lack of a PIR detector is … Continue reading

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Project: EQKit PSK-1 Electronic “Voice Control” Switch Kit

Continuing the kit-a-thon, I grabbed another EQKit out of the drawer – this one is a PSK-1 which was sold as an Electronic “Voice Control” Switch Kit for the princely sum of AU$1.98 including postage. As a kit that had … Continue reading

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Project: EQKit MDS-60 Electronic Metal Detector Kit

As a fan of building kits, my crusade to try building random cheap-Chinese kits continues with this EQKit MDS-60 Electronic Metal Detector Kit which I managed to get for AU$1.84. Being such a low-cost item, we don’t expect to build … Continue reading

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Project: “Generic” USB 5V/500mA Charger Kit

When it comes to power supplies, the standardisation of USB has made it the ubiquitous choice for many mobile and portable devices. As a result, you probably have an abundance of spare USB power supplies to charge or power your … Continue reading

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Project: “Generic” CD4060 SMD Musical LED Fancy Lantern Kit

I have a drawer full of cheap kits and I’m on a mission to empty it! This time, I’m looking at a “generic” CD4060 SMD “musical” LED fancy lantern kit which was purchased for AU$2.89 including postage. What’s so fancy … Continue reading

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Project: “Generic” Electronic 3-Person Voting Kit

My love for kits and cheap thrills comes together when I shop online. A year-or-so ago, I scoured eBay for whatever cheap kits I could find so I could build them and given the rainy weather, it is time for … Continue reading

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Field-Day Mysteries: Hexin 2108E Serial Device Server, CPU86 ROMs & Conner CP-3040 SCSI HDD

My recent trip to the CCARC Field Day at Wyong resulted in the purchase of a stack of random bits and pieces. The fun is, as expected, sorting through the stuff in detail, learning about it in the process and … Continue reading

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Project: “Generic” ZM-4 AT89C2051 4-Digit 7-Segment LED Clock Kit

Feeling a little bored and deflated one evening, I decided to open up my drawer of stuff to grab a kit out of there to cheer me up. After all, kit builds have always been rather therapeutic for me – … Continue reading

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RoadTest Review: Eaton SmartWire-DT System

Thanks to element14’s New Year’s Grab Bag RoadTest, I was the lucky recipient of a RoadTest kit that had been sitting around for six years. The kit from Eaton is for evaluation of their SmartWire-DT control panel wiring system which … Continue reading

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Project: Generic 16-Tones Electronic Music Box Kit

Around a year ago, I went on a shopping spree for kits and ended up with a stash of them which I would attempt in my spare time. Chinese kits have all the fun of being relatively inexpensive, but also … Continue reading

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Visited: Central Coast Amateur Radio Club (CCARC) Wyong Field Day (24 Feb 2019)

Buzz … buzz … buzz. It’s 4am on a Sunday and my wristband alarm goes off. On any other week, that would be rather abnormal and I’d plop right back to sleep. But today, instead, I leapt out of bed … Continue reading

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Repair: Hitachi CL-8320B Rechargeable Hair Clipper

From the same friend that bought around the broken soy-milk maker, I have a new repair challenge on my hands – a Hitachi CL-8320B Rechargeable Hair Clipper. The Item The unit was bought to me with its original box, which … Continue reading

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Thanks for the Packages: element14 & Tecsun Radios Australia

It’s been a few days since I’ve received a few “surprise” packages at my doorstep, but unfortunately, I didn’t have the time to post about them here when they arrived. As any academic might know – it’s grant application season … Continue reading

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Opinion: Finding a Decent EU to AU (Reverse) Travel Adapter

In the global marketplace that is the world of internet shopping, being able to buy things overseas has become a lot easier. Rather than having to take a holiday to another country and carry the items back, someone online is … Continue reading

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Failed, Teardown: Cowin E7 Pro Active Noise Cancelling Wireless Headphones

It looks like I haven’t been entirely fortunate with Cowin products. After the HE5A failed, I reverted to using the E7 Pro for my day-to-day commuting needs. Just this week, the E7 Pro failed as well, which doesn’t do much … Continue reading

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Weekend Project: MMA8451Q Accelerometer as a Microphone?

Last weekend was the Australia Day long weekend, so aside from chasing Shortwave Radiogram broadcasts and posting radiofax galleries, I also decided to build something I thought was rather interesting. In the past, I remember vaguely seeing articles about how … Continue reading

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Teardown: Cowin HE5A SportFree Active Noise Cancelling Wireless Bluetooth Earphones

It was only a few months ago in November I was reviewing the Cowin HE5A SportFree ANC Wireless Bluetooth Headphones. While I was generally satisfied with the compromises the package entailed, I did mention that the lack of protective casing … Continue reading

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Repair: SteelSeries Sensei “Pro Gaming” Laser Mouse (62150)

I’ve always been partial to laser mice and high-DPI sensors ever since I bought a second-hand Logitech MX1000 Laser Cordless Mouse. When my MX1000 gave in due to battery failure and corroding battery charge contacts, I went to the Mionix … Continue reading

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Troubleshoot, Repair: TP-Link UE300 USB 3.0 Gigabit Ethernet Network Adapter

Whenever I drop in to see some of my old friends, it’s almost inevitable that there would be some computer problems that need solving. This time around it was no exception. With this being the season for new researchers starting … Continue reading

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Review, Teardown & Test: Portable USB 18650 Li-Ion Rechargeable Fans (x3)

It’s summer in Australia and this one is another scorcher! Our summers do get somewhat hot, but not usually this hot. Data from my own weather station in my backyard shows that the temperature over the period from Christmas Eve … Continue reading

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Random: Happy New Year (2019) – Reflections, ABC/TBS Satellite Feed & Other Stuff

Happy New Year everyone! No, it’s not deja vu, we’re in 2019 … despite the blunder that occurred in Sydney’s NYE celebrations. Now that 2019 has arrived, it’s time to reflect on the year that passed and look at the … Continue reading

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Teardown: Eveready General Purpose (No. 909) 6V Carbon-Zinc Lantern Battery

While going around the house looking for things to bin, I came across an old broken “dolphin-style” torch with missing parts. Of the parts that remained, the metal had oxidised and fatigued so much that the contacts to the switch … Continue reading

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Review: EEVBlog HVP-70 (70Mhz) & Micsig DP10013 (100Mhz) High Voltage Differential Probes

Updated [7th Jan 2019] – Error in interpreting noise values due to oscilloscope 10:1 probe setting which I had missed has been fixed. — It seems I’ve been using the excuse of Christmas Sales to justify my recent increased spending … Continue reading

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Project: DIY Weather Station & Displays

It’s summer in Sydney and we’re definitely feeling it. In the west, there are often strings of 32 degree Celsius or above days coupled with dangerous storm activity, so staying comfortable is not always easy even with the modern conveniences … Continue reading

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Random: Crap Cables, USB Charger Repair, USB “Condom” & Win10 October Update

At last! Another random post … code-word for “frustrations of the past few weeks that don’t quite deserve their own posting”. This time, it’s crap cables (again), repairing a problematic USB charger, building my own USB “condom” and being subject … Continue reading

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RoadTest Review: Rohde & Schwarz HMP4040.04 Programmable Power Supply

Thanks to the generosity of element14 and Rohde & Schwarz, I was lucky enough to do yet another RoadTest of a pretty expensive piece of gear. Say hello to the Rohde & Schwarz HMP4040.04, a 4-channel 384W Programmable DC Power … Continue reading

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Review: Cowin HE5A SportFree Active Noise Cancelling Wireless Bluetooth Earphones

Updated 26/01/2019 – see end of article for more details. With most new phones beginning to omit the headphone jack, most users have begun a mass migration to Bluetooth wireless audio solutions. Many of these are traditional headphones which are … Continue reading

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Project: Words vs Numbers “Art” with an Arduino & HD44780 LCD

I’m definitely no artist – I don’t normally go on “artistic” endeavours, but I try to do practical things as any engineer would. But it’s been a while since I’ve had the time or inclination to build something … and … Continue reading

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Teardown: A Sick Cooler Master SickleFlow X 120mm Green LED Fan

It hasn’t even been a year since I built my new workstation and already, something seems to be amiss. Lately, it seems I haven’t been sleeping so well, because there seems to be an angry beast in my room. “Grrrrrrrrrr … Continue reading

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RoadTest Review: B&K Precision BA6010 Battery Analyser

If you’ve been wondering why it’s been quiet around here for a while – it’s because I’ve been unusually busy. One of the things I’ve been working on is a review of the B&K Precision BA6010 Battery Analyser I received … Continue reading

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