MORE ABOUT Raspberry Pi

The pi-top [4] is a robust educational computer intended for makers, and especially young makers better known as children. Based on a Raspberry Pi 4, it is a follow-up to the pi-top [3] Raspberry Pi laptop computer.

Because it is almost impossible to work on the Raspberry Pi, or, for that matter, on Linux in general, without ever needing to enter commands in a terminal, here is a list of frequently used Bash commands.

This is a submission from Distrelec. They have expanded their supplier network by adding Pi Supply, leading creator of accessories for Raspberry Pi. Motivated by an ambition to make technology accessible to everyone, Pi Supply has developed a unique range of electronic accessories designed to enhance the capabilities of Raspberry Pi products.

How do you power a highly reliable LoRa gateway that can be trusted not to trash its SD card and can be remotely located and managed? With this Power over Ethernet (PoE) powered uninterruptible power supply (UPS). A couple of 25-farad supercaps provide enough backup time to cover ten seconds of power outage plus another fifteen seconds to cleanly shut down the Pi if necessary.

A super-cap based Power-over-Etherent Uninterruptable Power Supply for a Raspberry Pi 3B+ and a hungry HAT too.

Small single-board computers like the Raspberry Pi are ideal for use as small stand-alone network audio players. With Volumio and other specialized Linux distributions, putting together an audio player is remarkably easy. And as ElektorLabs worker Ton Giesberts shows in this article, you can also use this approach to build a high-end audio player.

Pixy2 is an artificial vision sensor for rapid recognition of moving shapes and colours. It follows objects at a rate of 60 images per second and has algorithms for recognition of shapes and colours. To better follow moving objects, it may be mounted (as an option) on a pan-tilt support, and control the vertical and horizontal movements itself.

For the cost of 3 Raspberry Pis you will get from Allo, the DigiOne, a HAT for the Raspberry Pi, which makes available a digital S/P-DIF signal from the audio signal playing on the Pi. Is it worth that much?

Language assistants like Alexa, Google Home or Siri are now commonplace. However, the actual recognition of the spoken words is not done locally, but in the Cloud of the provider – which raises questions about data privacy. There are other solutions such as Snips – a speech recognition system that runs entirely on local hardware like the RPi. We took a look at a speech recognition kit and show how you can use it to develop your own applications...

Snips is a platform for connected "things". It allows developers and manufacturers of "things" to add a voice assistant to their products Your Raspberry PI may not yet obey your finger or your eye, but thanks to Snips it is at your command. This article explains how to add "ears" to a Raspberry Pi.