January 2022

Detailed description of this issue HERE

Projects & Circuits

Vintage Battery Radio Li-ion Power Supply – buy the PCB HERE
Vintage Radio ‘A’ and ‘B’ batteries have been unobtainable for some time. This compact and easy-to-build module uses Li-ion or LiPo cells.

The MiniHeart – buy the PCB HERE
Give a favourite soft toy a beating heart! With both a soft sound and a real beat, it could relax a baby, a puppy – or even help you sleep better!

Balanced Input and Attenuator for the USB SuperCodec – Part 2 – buy the PCB HERE
As described last month, this add-on board for the USB SuperCodec provides two balanced inputs and fits in the same instrument case – now let’s build it!

Series, Features and Columns

The Fox Report by Barry Fox
Power as free as the wind

Techno Talk by Mark Nelson
Communing with nature

Net Work by Alan Winstanley
The latest topical news about EVs, the ‘fun’ of upgrading to Windows 11 and updates on satellite and space technology.

Flowcode Graphical Programming by Martin Whitlock
RedBoard and PICs – Part 1

Circuit Surgery by Ian Bell
Op Amp Logarithmic and Exponential Amplifiers – Part 2

PIC n’ Mix by Mike Hibbett
Part 9: PIC18F Development Board – buy the PCB HERE

Max’s Cool Beans by Max The Magnificent – buy the SMAD display HERE.
Flashing LEDs and drooling engineers – Part 23

Audio Out
Analogue Vocoder – Part 3: Driver Amplifier

Make it with Micromite by Phil Boyce
Part 32: Using iButtons with the Micromite

Downloads

Download the files associated with this issue HERE.