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Contents Vol.28, No.5; May 2015 SILICON CHIP www.siliconchip.com.au Features   12  The Australian International Airshow 2015 The Australian International Air Show and Aerospace and Defence Expo­sition 2015 was again staged at Avalon, Victoria earlier this year. Here’s a look at some of the show’s highlights – by Dr David Maddison   20  Review: The Navman MiVue Drive GPS Unit Many readers have GPS navigation in their cars and some also have a dashcam. But who wants to have two devices stuck to the windscreen? The Navman MiVue Drive GPS unit combines both functions – by Leo Simpson   38  Home Solar Panel Electricity: Is It Worth It? Generating your own electricity from solar panels on your roof seems like a great idea. But is it? One reader “took the plunge” a few years ago and kept records. Here are his conclusions – by Dr Alan Wilson   86  Review: The MikroElectronika Buggy MikroElektronika’s “Buggy” is a micro workstation unlike any you’ve seen before. It has four wheels and motors and adding MikroElektronika’s click boards means it can do a lot more than just run around – by Ross Tester Appliance Earth Leakage Tester – Page 26. Pro jects To Build   26  Appliance Earth Leakage Tester Use it to check the safety of earthed and double-insulated equipment that’s powered from the 230VAC mains supply – by John Clarke   42  WeatherDuino Pro2 Wireless Weather Station, Pt.3 Last month, we built the Tx unit & temperature/humidity sensor and discussed suitable wind & rain instruments. This time, we’re building the receiver (Rx) and getting it to send data to a PC – by A. Caneira & Trevor Robinson WeatherDuino Pro2 Wireless Weather Station, Pt.3 – Page 42.   64  Balanced Input Attenuator For Audio Analysers & Scopes Build it to extend the measurement capabilities of low-cost USB test instruments such as USB DSOs. This unit provides balanced/differential inputs for each channel as well as unbalanced inputs & three attenuation ranges – by Jim Rowe   78  4-Output Universal Voltage Regulator Low-cost unit has provision for adjustable positive & negative outputs plus two fixed positive outputs of +5V & +3.3V – Jim Rowe & Nicholas Vinen Special Columns Balanced Input Attenuator For Audio Analysers & Digital Scopes – Page 64.   58  Serviceman’s Log What let the magic smoke out? – by Dave Thompson  88 Circuit Notebook (1) Arduino-Based IR Remote With LCD Touch-Screen; (2) Firmware Update For 2.5GHz Frequency Counter; (3) A Modern Version Of The Ping-Pong Game   92  Vintage Radio The Radiola 523-M: the last vibrator-powered radio – by Rodney Champness Departments   2 Publisher’s Letter   4 Mailbag  siliconchip.com.au 57  Product Showcase   99  Ask Silicon Chip 103 Market Centre 104 Advertising Index 104  Notes & Errata 4-Output Universal Voltage Regulator – Page 78. AM pril ay 2015  1