February 2021

Detailed description of this issue HERE

Projects & Circuits

4G Remote Monitoring Station – buy the PCB here!
A couple of Arduino shields and a little software lets you monitor valuable or important locations and even remotely trigger actions and avoid problems!

Low-distortion DDS Signal Generator – buy the PCBs here!

This two-channel audio-signal generator produces very low distortion sinewaves as well as triangle waves, square waves, pulse trains and noise.

Indoor ‘Poor Air Quality’ Monitor

Measure air quality with this Micromite-BackPack-based volatile organic compound (VOC) meter.

USB Logic Analysers

Overview of an 8-channel USB logic analyser that is essentially a clone of the well-known and respected Saleae Logic unit – but cost just £8..

Series, Features and Columns

The Fox Report by Barry Fox
Smart meters follow-up

Techno Talk by Mark Nelson
Dare we laugh about scams?

Net Work by Alan Winstanley
The latest updates to Amazon Fire, GoogleTV/Chromecast and Devolo’s Wi-Fi extender; plus the charging trials of being an EV early adopter.

Circuit Surgery by Ian Bell
Simulation issues with a digital divide-by-two circuit

Make it with Micromite by Phil Boyce
Part 25: MMBASIC, Micromite and Maximite varieties

Practically Speaking by Jake Rothman
Restoring old equipment – Part 2

Electronic Building Blocks by Julian Edgar
Wireless phone charging pad

Max’s Cool Beans by Max The Magnificent
Flashing LEDs and drooling engineers – Part 12

Audio Out
Theremin Audio Amplifier – Part 4 – buy the PCB here!

Downloads

Download the files associated with this issue HERE.