Category Archives: Electronics

Project: AT89S52-based LED Shake-Stick Kit

Just recently, I built an AT89S52-based LED Heart and an LED Clock Kit, so I wondered just what else is out there that is AT89S52-based. Searching around on eBay led me to a “shake stick” kit for AU$4.37. It looked … 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: AT89S52-based Multi-Coloured LED Heart Kit

As my radio kit-building adventures have reached the “bottom” of the eBay well, with most of the kits available being built, I decided to branch out into other “low cost” kits to see what they are like. Most of the … Continue reading

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Review, Teardown: “Generic” BT-168 Battery Tester

A short while back, I posted about this generic battery tester, which was a cheap and nasty clone of a model which was quite popular, which I used frequently as a child. In my quest to buy it, I came … Continue reading

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Power Bank Endurance Test – Hillo Power Jin Gangxia (Part 18)

This is one of my ongoing experiments to see how a rather no name power bank ages with charge/discharge cycles, and it’s been quite surprising all the way. This is the 18th installment, meaning that we have reached a total … 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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Power Bank Endurance Test – Hillo Power Jin Gangxia (Part 17)

In this long ongoing experiment, I attempt to see just how a “no name” power bank stands up to repeated cycling. My expectations were fairly low at the outset, but it seems I’ve been proved completely wrong, as now I’m … 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, Teardown, Reverse Eng: Generic Battery Tester

As a kid growing up in the 90’s, one fond memory I had was sorting through piles of batteries to see which ones were good and which ones needed to be discarded or recharged. With many toys and appliances using … 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

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Review, Teardown: Askborg ChargeCube 20800mAh Powerbank (M021)

When it comes to power banks, while some users are content to have a moderate-sized unit that charges their phone a few times, there are other users who really demand as much capacity as practical. For those users looking for … 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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Power Bank Endurance Test – Hillo Power Jin Gangxia (Part 16)

As far as experiments go, this is probably the longest and least exciting experiments of them all. It started years ago when I wanted to see just how long some randomly branded Chinese lithium-polymer cell based power bank would last, … Continue reading

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Experiment: Time to EPROM Erasure by UV Lamp & Sun?

I’ve always been fascinated by the beauty of EPROM chips with their erasure windows giving you a clear look inside the package. Because of my fascination, I ended up buying quite a few chips, an UV eraser that needed some … Continue reading

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Review, Teardown: Nitecore HC60 1000lm USB Rechargeable Headlamp

After I wrote my review of the Nitecore MH10, I decided to ask Nitecore (nicely) if they would like me to review their other products, as they had a reviewer’s section on their site. To my surprise, they were happy … 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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Post-Mortem: Apple 60W MagSafe Power Adapter (A1344)

Unlike most of my other posts which are relatively straightforward, this post has a little story behind it. In March, Matson of Chicago, Illinois, USA contacted me about his “dead” Apple 60W MagSafe Power Adapter and wondered if I’d be … Continue reading

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Tech Flashback: Canon DM-2500 Intelligent Organizer

Seeing as I’m not having too much luck getting to sleep, I might as well do something productive, so here comes another post. Apologies in advance if I make any mistakes … It’s hard to imagine now in an era … Continue reading

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Weekend Probing Pt. 2: Keweisi KWS-V20 USB Tester IC Connections

What started off as a little exploration led me deeper to try and better understand what was going on with the Keweisi KWS-V20 USB Tester. Even though I don’t have any specialist bus sniffing gear, I decided to just wing … Continue reading

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Weekend Probing: Keweisi KWS-V20 USB Tester IC Connections

After doing a quick review and test of the Keweisi KWS-V20 USB tester, the whole issue of the unknown microcontroller IC, the EEPROM which holds the accumulated charge and the LCD display really bugged me. I thought of the possibility … Continue reading

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Review, Teardown: Keweisi KWS-V20 USB Tester

It’s almost been one year since I’ve looked at “USB charger doctor” style devices, but having reverse engineered, tested and modified one, I didn’t think I’d ever bother with them again. That was, until I saw the Keweisi KWS-V20 USB … Continue reading

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Review: Jawbone UP2 Wireless Activity & Sleep Tracker (JL03)

When it comes to fitness trackers, aside from Fitbit, the next name that most comes to mind is Jawbone. Unfortunately for them, things have been a little rocky, with them taking Fitbit to court over hiring away their employees and … 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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