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Contents Vol.28, No.3; March 2015 SILICON CHIP www.siliconchip.com.au Features 15 Choosing, Installing & Using IP Security Cameras Wireless IP cameras come in a range of models & with an internet or mobile phone connection, you can see what’s going on in your home or backyard and get a warning if there’s an intruder – by Ross Tester How To Set Up An IP Camera For WiFi & Access It Via The Internet – Page 15 & 22. 22 Setting Up An IP Camera For WiFi & Internet Access IP cameras are usually easy to set up but it’s not always plain sailing. Here’s how to access the camera via the internet or a smartphone – by Nicholas Vinen 44 Review: QuantAsylum QA400 24-Bit Stereo Audio Analyser Want to test audio gear on a budget? This audio analyser’s performance closely approaches that of high-end analysers but costs just US$247 – by Jim Rowe 74 Modifying the Currawong Amplifier: Is It Worthwhile? Are better output transformers, more expensive valves and so on worth using in the Currawong Stereo Valve Amplifier? – by Allan Linton-Smith & Leo Simpson 86 Reach For The Sky . . . And Way, Way Beyond, Pt.2 Last month, we described how amateur balloonists, kite fliers and model aircraft enthusiasts are achieving amazing results & setting new records. This month, we go even further with model rocketry – by Dr David Maddison Pro jects To Build 30 WeatherDuino Pro2 Wireless Weather Station, Pt.1 Based on a tiny Arduino microcontroller board, this versatile weather station accepts plug-in & wireless expansion modules & gives you much more weather information than most commercial units – by A. Caneira & Trevor Robinson WeatherDuino Pro2 Wireless Weather Station Pt.1 – Page 30. 36 A Touch-Sensitive Shield For The Arduino This simple Arduino shield adds versatility to your Arduino project. It gives you three touch “buttons” plus a touch-activated “level control” – by Brandon Speedie 38 Spark Energy Meter For Ignition Checks, Pt.2 Our new Spark Energy Meter is an essential workshop tool for anyone who tinkers with automotive ignition systems be they old or new! Now we get to the good bit . . . putting it all together – by Dr Hugo Holden & John Clarke 64 6-Digit Retro Nixie Clock Mk.2, Pt.2 We published the circuit of our new 6-Digit Nixie Clock in Pt.1 last month. This month, we describe how to put the kit together – by Nicholas Vinen Special Columns A Touch-Sensitive Shield For The Arduino – Page 36. 58 Serviceman’s Log The monitor speakers that buzzed – by Dave Thompson 82 Circuit Notebook (1) Remote Sensing & Controlling A Micromite With HC05 Bluetooth Modules; (2) Poor Man’s Mains Voltage Scope Monitor; (3) Micromite 5 x 5 Switch Matrix 92 Vintage Radio Tela-Verta 1948 Model 204C Radio – by Associate Professor Graham Parslow Departments   4 Publisher’s Letter   6 Mailbag siliconchip.com.au 35 Online Shop 57 Product Showcase 98 103 104 104 Ask Silicon Chip Market Centre Advertising Index Notes & Errata Building The 6-Digit Nixie Clock With GPS Accuracy, Pt.2 – Page 64. Note: due to space constraints, we have March 2015  1 postponed a review of the Keysight MSO-X 3104T 1GHz 4-channel mixed signal oscilloscope to the April 2015 issue.