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Contents www.siliconchip.com.au Vol.26, No.7; July 2013 SILICON CHIP 100 Years Of AWA – Page 12. Features 12 100 Years Of AWA It’s now 100 years since the formation of Amalgamated Wireless Australasia Ltd (AWA), the most important electronics company ever to exist in Australia – by Kevin Poulter 20 Cheap & Cheerful Smart TV Conversion Why buy a smart TV when you can do a simple work-around with your existing TV? You could end up with a smarter TV than a smart TV! – by Julian James 44 Secure Digital Cards: Clearing Up the Confusion There are many different kinds of SD & MicroSD cards. We take a look at their differences and at the technology behind them – by Nicholas Vinen Pro jects To Build 24 DIY Wireless Audio Streaming Want to wirelessly stream high-quality audio from your PC to a USB audio device such as our CLASSiC DAC? Here’s how to hack a cheap router to do the job – by Nicholas Vinen DIY Wireless Audio Streaming – Page 24. 32 Li’l Pulser Model Train Controller, Mk.2 New design features pulse power for smooth running, adjustable simulated inertia, good speed regulation, reversing, short circuit protection and an output current capability of up to 8A. It’s also very easy to build – by John Clarke 64 Add A UHF Link To A Universal Remote Control Need longer range from your IR remote control? Fit this tiny IR-To-UHF module inside the remote and build the companion UHF-To-IR receiver to operate equipment from anywhere inside or outside your home – by John Clarke 74 Demonstration Circuits For Human Colour Vision Build these two circuits to demonstrate how the various colours are generated and perceived by the human eye – by James Goding 84 Build A USB Port Voltage Checker An incorrectly wired USB port can destroy a flash drive. Test it first with this handy USB port checker. It can also be used to check for USB voltage fluctuations when a device is plugged in – by Nicholas Vinen Li’l Pulser Model Train Controller Mk.2 – Page 32. Special Columns 57 Serviceman’s Log Smoke: it’s not always a bad thing – by Dave Thompson 76 Circuit Notebook (1) Trailer Light Testing Unit; (2) Audio Breakout Cable For The iPhone; (3) Setting A Real Time Clock With GPS Time 90 Vintage Radio Add A UHF Link To A Universal Remote Control – Page 64. Restoring an AWA B15 AM broadcast receiver – by Rodney Champness Departments   2 Publisher’s Letter   3 Mailbag 73 Subscriptions siliconchip.com.au 88 Product Showcase 96 Online Shop 98 Ask Silicon Chip 103 Market Centre Build This USB Port Voltage Checker – Page 84. July 2013  1