Tag Archives: electronics

Review: Uni-Trend UT210E Mini Clamp Meter

When diagnosing electronics, I often wished I could make current measurements without having to bridge out a component, or cut a wire. The inconvenience and potential safety issues are sometimes overwhelming and I just decide not to bother measuring the … Continue reading

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Random: Birthday, Reflections, Taronga, CeBIT & the Kitchen Sink

#include <stdio.h> int main (void) { printf(“Hello World!”); return(0); } It’s been quiet. Too quiet. Sorry for that. While I did say I was going on holidays and would be on a hiatus, I didn’t expect it to be a … Continue reading

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Teardown: RadioShack Amplified Telephone Earpiece (43-229)

After my experimentation in building a T-coil receiver on my own, it seemed that the unit did have some issues which I eventually corrected. While it seems the schematic may have been a victim of a transcription error, I thought … Continue reading

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RoadTest Review: Texas Instruments TPS56C215EVM-762 Evaluation Module

It’s new year’s eve and I’m busy working away. Why you ask? Well, I’ve been fortunate enough to be the recipient of another RoadTest item – this time, it’s a Texas Instruments Evaluation Module. The module in specific is the … Continue reading

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Salvage Season: Pt 5 – Fisher-Rosemount Systems Model 275 HART Communicator

“All this gear … and I still can’t get to your heart.” Welcome back to the salvage season series of posts. Lame joke aside, this post will be about a Fisher-Rosemount Systems Model 275 HART Communicator. So … what is … Continue reading

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Project: AT89S52+DS1302-based LED Clock Kit (EC1204B-Equivalent)

Since I started along the line of garish LED-adorned kits, I thought I’d order a few other kits built around the AT89S52. In this case, it was a clock based around the AT89S52 80C51 microcontroller and a DS1302 real-time clock. … Continue reading

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Project, Reverse Eng, Repair: ATmega328-based “Transistor Tester” Kit

A common complaint and reason for the falling popularity of electronic kits is that none of them really let you build something that’s really useful that you couldn’t buy pre-built at a lower cost. I believe this complaint does have … Continue reading

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Project: YYDZW BH1417F-based Stereo FM Transmitter Kit

While I was browsing the listings of electronics kits on eBay, I came across this particular stereo FM transmitter kit but I didn’t think much of it. In fact, given the chance to buy it, I passed over it twice. … Continue reading

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Project: Sainsmart Forty-9er “3W” 7.023Mhz QRP CW Transceiver Kit

Even though I’m insanely busy, it seems I just can’t help myself when it comes to cheap Chinese kits available on eBay. Of course, having built most of the cheap radio-based kits already, there isn’t really that much to build … Continue reading

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Project: CD2003GP+SC3610D FM Receiver w/LCD Alarm Clock (74-108Mhz)

My little “mission” to build random Chinese radio-kits from eBay continues with this rather odd and difficult kit. Unlike the other kits, this is the first to come with an LCD display, but is advertised strangely as FM Radio Kit … Continue reading

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Project: S66D/E 9018-based AM Radio Kit

If you’ve been wondering about all the random radio kits I’ve posted about recently and had the thought “Gee, that guy must’ve just looked for any cheap radio kits on eBay and bought them all!” You’d be absolutely right. In … Continue reading

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Project: 7.023Mhz PIXIE_V3 QRP CW Tranceiver Kit

After I stupidly decided to push the limits on the PIXIE_4.1 and subsequently destroyed its amplification, I wasn’t too concerned. Being the prepared sort, when it comes to low-cost kits, I sometimes buy two in anticipation that maybe some parts … Continue reading

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Project: 7.023Mhz PIXIE_4.1 QRP CW Transceiver Kit

Going along the same vein of “radio kits”, this one is a little bit different. This one is a do-it-yourself PIXIE 7.023Mhz QRP transciever intended for amateur (ham) radio morse code (CW) usage. It doesn’t have many specs, but apparently … Continue reading

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Project, Reverse Eng: Hex3653 AV2B Stereo FM Receiver Kit

When I built my last radio kit, I lamented that there were some kits out there which were mainly black-box which don’t offer that much of an opportunity to learn about what is actually going on. While I was dismissive … Continue reading

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Review, Tested: Generic USB FM Transmitter (FM_MIC_V5.0.9)

It wasn’t too long ago that I purchased a generic pocket radio kit on eBay and built it. But as anyone knows, when it comes to shopping online for cheap Chinese goods, there are often lots of things that can … Continue reading

Posted in Computing, Electronics, Radio | Tagged , , , , , , | 6 Comments

Repair: Apple Macintosh PowerBook 100 “Gotta re-cap ’em all!”

In the last part of this little project, I managed to refurbish the two PowerBook 100 power supplies to a working condition. The next step is to refurbish the main unit itself. Even though I was equipped with the service … Continue reading

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Repair: Apple Macintosh PowerBook 100 AC Adapter (M5140X)

Since I made my posts about the PowerBook 100 that has “become” mine, I faced a dilemma as to what to do next. Even though I didn’t get too many people chipping in their opinion, it seemed that a full … Continue reading

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Visited: ElectroneX 2016 (14-15 September 2016)

ElectroneX is one of the major electronics design and assembly exhibitions in Australia, and they alternate between Sydney and Melbourne on an annual basis. Two years ago, they were in Sydney, and I was helping out element14 exhibiting there at … Continue reading

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Project: Paeansonic CF210SP CD9088+CD7642 AM/FM Radio Kit

It’s been a bit quiet around here lately – I’m just swamped with work, and it never quite goes away, but neither does the desire to do something for my own enrichment and enjoyment … and the desire to blog … Continue reading

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Tech Flashback: Dick Smith’s Funway 2 Project 7: Pocket Transistor Radio

Since the positive reception to my posts about Dick Smith’s Fun Way into Electronics book series (Part 1, Part 2 & 3), I’ve always been meaning to put up more posts about the series and its projects. It was amazing … Continue reading

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Modification: Manson HCS-3102 Power Supply Output On/Off Switch

Three years ago, I purchased a pair of Manson HCS-3102 programmable switch-mode power supplies. These were not particularly expensive supplies, and judging by some of the noises they made and the granularity of the programming and read-back, weren’t particularly high … Continue reading

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Friday 13th November 2015: The Night the Power Went Out

Friday the 13th, commonly known as Black Friday, is believed to bring bad luck. While I’m not a superstitious person, and I don’t believe in a fear of the number 13, it seems that something was special about this Friday. … Continue reading

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Project: Raspberry Pi Door Sign in Under an Hour!

A while back, I wasn’t happy that I was constantly getting interrupted while working or sleeping in my room, so I decided to solve that. Grabbing some parts I had lying about, I decided to make a wireless network-connected door … Continue reading

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Teardown & Test: Nelson Cougar 60 Electronic Downlight Transformer

You never quite go to Bunnings without leaving with quite a few items. While walking around the aisles, the Nelson Cougar 60 caught my eye. This is an electronic transformer designed for use with halogen downlights up to 60 watts. … Continue reading

Posted in Electronics, Lighting | Tagged , , , | 5 Comments

Teardown: IKEA Koppla 6-outlet Powerboard

My trip to IKEA netted me many interesting items, which I am slowly sifting through. IKEA is not only about furniture – there is some lighting and electrical as well that interests me. In general, powerboards are pretty simple household … Continue reading

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Project: A Fluorescent Starter Based Glow Lamp

This week marks the official opening of the Vivid Sydney outdoor light show for 2015. Sadly, the weather is absolutely horrible today, with scattered heavy showers all over Sydney meaning it’s another “stay at home” day. This got me thinking … Continue reading

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Quick Review: Freetronics LeoStick (XC4266) Arduino Compatible Board

Just this week, I was gifted a Freetronics LeoStick from a colleague at the university, so I decided to take a look at it over the weekend. This particular unit seems to be distributed by Jaycar under catalogue number XC4266 … Continue reading

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Teardown: A Dying “X-Glow”-branded Cree XLamp Torch

A few years ago, while shopping around at a local Jaycar, I got a bit distracted and did something bad. I made an impulse buy. I saw a nice LED torch sitting on the shelf, on special, with a very … Continue reading

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Review: Agilent U1241B 4-Digit Handheld DMM & Accessories

Early in December, I made a trip to element14 to treat myself to an early Christmas present. Having posted about it on my element14 blog, inviting members to take a guess at what the surprise would be, I was surprised … Continue reading

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Project: Audio Induction Loop Receiver (Part 3: More Sydney Trains)

In the previous part, I had began a small project to collect samples of digital voice announcements from Sydney Trains Millenium and Warratah sets. In fact, I had continued to collect more samples just out of my own interest, but … Continue reading

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