June 2021

Detailed description of this issue HERE

Projects & Circuits

Touchscreen Wide-range RCL Box – Part 1 – buy the PCB here!
Our new Touchscreen Wide-range RCL Box not only gives you a range of resistances and capacitances, but also inductances – all at your fingertip!

Roadies’ Test Signal Generator – buy the PCB here!
This test oscillator is ideal for testing balanced and unbalanced inputs on professional sound equipment. It’s small, rugged, very portable and easy to use.

Concreto Speaker System – buy the PCB here!
These ‘enclosures’ are stock standard concrete building blocks – the type you’ll find at very low cost in just about every hardware store. Intrigued? Read on!

Series, Features and Columns

The Fox Report by Barry Fox
Online health – the good, the bad and the ugly
tekkiepix.com pic of the month: Alan Blumlein

Techno Talk by Mark Nelson
Bad science and good

Net Work by Alan Winstanley
This month, the longterm effect of lockdown and technology on where we work; legacy memory devices; and a round up of the latest exciting space news.

Circuit Surgery by Ian Bell
Transformers and LTspice – Part 1

KickStart by Mike Tooley
Part 3: Making sense of inductors

IoT Cricket by Md. Khairul Alam
Part 1: IoT made easy for everyone

Make it with Micromite by Phil Boyce
Part 29: Internet connection with an ESP32 Wi-Fi module – Part 2

Practically Speaking by Jake Rothman
Restoring old equipment – Part 3

Max’s Cool Beans by Max The Magnificent
Flashing LEDs and drooling engineers – Part 16

Audio Out
Microphone Preamplifier (for Vocoder) – Part 2

Downloads

Download the files associated with this issue HERE.