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Contents Vol.36, No.11 November 2023 18 The History of Electronics, Pt2 Page 18 We round-up significant inventors and their inventions dating from 1848 onwards. Compared to last month, you’ll find many of the inventions are more closely related to devices used today such as television & computers. By Dr David Maddison Electronic inventors & inventions 46 16-bit precision 4-input ADC The ADS1115 provides up to four 16-bit ADC channels (analog-to-digital conversion) to nearly any microcontroller. It has a built-in I2C interface, making it trivial to connect to an Arduino or similar. By Jim Rowe Using electronic modules 62 Microchip’s new PICkit 5 We tested out the new PICkit 5 programmer from Microchip, to see what new features it has. We also took the time to evaluate the latest version of the free MPLAB X IDE software. By Tim Blythman Microntroller tools review 98 Recreating Sputnik-1, Part 1 The History of Electronics Raspberry Pi Pico Audio Analyser Page 36 Recreating Sputnik-1 The Soviet-designed Sputnik-1 satellite, launched in 1957, carried two D-200 1W radio transmitters. Dr Holden decided to create an authentic replica of the D-200 transmitter. By Dr Hugo Holden Vintage Radio 36 Pico Audio Analyser Our compact Audio Analyser uses a Raspberry Pi Pico to generate and analyse audio signals. It has oscilloscope and spectrum modes and can perform harmonic analysis to check signal quality. By Tim Blythman Test & measurement project 50 K-Type Thermostat Our Thermocouple Thermostat doubles as a thermometer and easily measures temperature from -50°C to 1200°C! It has an onboard relay for thermostat control of heating or cooling applications. By John Clarke Temperature control project 68 Modem / Router Watchdog This simple Watchdog will automatically restart your modem or router if it stops working. It's a useful device that saves you the hassle of getting up and restarting the modem yourself. By Nicholas Vinen Networking project 74 1kW+ Class-D Amplifier, Pt2 Continuing from last month, we cover how to assemble and test your new and powerful Class-D monoblock amplifier. The assembly process is straightforward due to the Amplifier using pre-built modules. By Allan Linton-Smith Audio project Page 98 2 Editorial Viewpoint 5 Mailbag 35 Product Showcase 82 Serviceman’s Log 90 Online Shop 94 Circuit Notebook 97 Subscriptions 1. Minimal WiFi water tank level gauge 2. Demonstrating magnetic levitation 3. Discrete microamp LED flasher 108 Ask Silicon Chip 111 Market Centre 112 Advertising Index 112 Notes & Errata