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This handy little tool uses an inexpensive Raspberry Pi Pico microcontroller board and not much else to generate and analyse audio signals. It has oscilloscope and spectrum modes and can run a sweep to plot a frequency response or perform harmonic analysis to check signal quality. It fits in the palm of your hand, is portable and battery powered. by Tim Blythman
Our upgraded Pico W BackPack now features WiFi functionality along with its 3.5-inch touchscreen. We’ve also included sample code to show how you can use HTTP, UDP and NTP with the BackPack. by Tim Blythman
The Pico W is the newest Raspberry Pi module which now incorporates WiFi functionality, all for only a few dollars more! by Tim Blythman
In this final instalment, we take an in-depth look at how bipolar junction transistors (BJTs) and both main types of field-effect transistors (JFETs and Mosfets) work at a fundamental level. There’s also a small section explaining the many different numbering schemes used for transistors. by Ian Batty
This BackPack design simplifies interfacing a Raspberry Pi Pico with a 2.8-inch or 3.5-inch touchscreen. It also includes some extra capabilities, such as a real-time clock, infrared receiver and more. by Tim Blythman