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Contents Vol.37, No.03 March 2024 16 Computer Storage Systems, Pt2 We cover the many modern storage technologies such as hard disk drives (HDD), flash memory and solid-state drives (SSD), as well as future developments like 5D optical, holographic and DNA storage. By Dr David Maddison Computer technology Data Storage Systems 56 Electromechanical Tic-Tac-Toe Due to his fascination with Dick Smith’s original noughts & crosses (tic-tactoe) machine made from telephone exchange parts, Steve decided to make one with a modern twist. This article shows how he did it. By Steve Schultz Noughts & Crosses feature 86 Review: Arduino for Arduinians This 478-page book contains 70 Arduino projects and is aimed at those who already have some experience programming or with Arduino. By Nicholas Vinen Book review Part 2: page 16 Raspberry Pi Pico Digital Video Terminal Page 45 92 Bush MB60 portable radio The Bush model MB60 was released in 1957 and is the first valve-based Bush radio to be described in Silicon Chip. The MB60 is a portable radio that uses the Dx96 series of directly-heated valves. By Ian Batty Vintage Radio 30 Laser Communicator The Laser Communicator allows you to transmit voice or music over a laser beam and is ideal for learning electronics! It might not have many practical uses, but it demonstrates what can be done using simple circuits while serving as a good teaching aid. By Phil Prosser & Zak Wallingford Beginner’s electronics project 45 Pico Digital Video Terminal This project adds the ability to communicate with and control a Micromite, PicoMite or WebMite or similar, using a USB keyboard and HDMI display. It uses multiple Raspberry Pi Picos to do this and is VT100 compatible. By Tim Blythman Computer interface project 66 ‘Nunchuk’ RGB Light Driver Driving up to four independent RGB strips, this strip lighting driver includes a built-in strobe light and is motion-operated(!) using a Wii Nunchuk controller. It can be controlled wired or wirelessly. By Brandon Speedie Lighting controller project 77 Mains Power-Up Sequencer, Pt2 The Mains Power-Up Sequencer has four 10A mains outputs with staggered switching, making it easy to power up several devices together. We cover the construction and setup so you can complete the Mains Sequencer. By John Clarke Power control project Page 66 Wii Nunchuk RGB Light Driver 2 Editorial Viewpoint 5 Mailbag 76 Product Showcase 88 Circuit Notebook 98 Serviceman’s Log 1. Arduino-based water pump monitor 2. Battery Lifesaver with load control 3. Carbon monoxide (CO) monitor 106 Online Shop 108 Ask Silicon Chip 111 Market Centre 112 Advertising Index 112 Notes & Errata