Dear Readers,


We are still publishing PE every month as normal!

If you are having trouble locating or buying the latest issue then you can buy it from our new online shop here for EXACTLY the same price and we will post it to your address, P&P included. (UK only).


If you do not have an online account with us yet, then please set one up before adding the issue to your shopping cart. Just click ‘Create Account’ top right of the new website.

International Readers

For details about sourcing your copy of Practical Electronics magazine outside the UK, plus important news on current and new subscriptions (both print and digital), please see our latest updates here


Matt Pulzer - Publisher




This website is no longer maintained. We're reaching the final stages of migrating onto a new website with a new shopping cart and downloadable issues of PE Magazine.


Please now visit


During a period of transition, some parts of this legacy website are being referenced by the new site, so you may occasionally be directed back here.


This month's issue details also appear in the new format here


May 2020 issue


433 MHz Wireless Data Range Extender

This simple, solar-powered 433MHz repeater can extend the range of your keyfob transmitter where range is limited by eg trees or other obstacles. Intended for devices that transmit intermittent bursts.



Range up to 200m in open space with optimised antenna. Repeater chaining possible (with caution). PIC 16F88-based, with codes downloadable for free from the PE Online Shop (registration required).

Bridge-mode Audio Amplifier Adaptor

In need of some extreme, earth-shattering power from your audio amp? You can combine this small, easy-to-build ‘bridge-tied load’ unit with a standard stereo amplifier to easily generate 400W into a single 8R speaker, or up to 1kW or more – per channel!


It produces up to four times the existing power into a single speaker, using a stereo amp or two mono amps. Use as a standalone module or build into your audio equipment.

iCEstick (Part 2)

A field-programmable gate array (FPGA) is considerably more proficient than a microcontroller in many ways. Following last month’s review of the Lattice iCEstick and IceStudio software, this month we offer a sample of its capabilities by creating an FPGA-based VGA terminal, which generates a VGA signal similar to an early home computer, ideal for simple text displays on monitors.


Ultra-low-distortion Preamplifier with Tone Controls (Part 2)

Last month we introduced our state-of-the-art stereo preamplifier. Along with almost unmeasurable noise and distortion, it sports a remote volume control, input selection and muting, along with bass and treble instrument knows on the front panel. This month we build the input selectors and power supply.

Please read our note in the April 2020 issue Parts List before purchasing components.


Make it with Micromite (Part 16)

Introducing the Micromite Robot Buggy

This fun and highly customisable project demonstrates an ensemble of Micromite techniques and capabilities. The MRB was inspired by the popular Zumo buggy and offers enthusiasts the chance to give their Micromite a set of wheels (or tracks anyway)!


Also in this issue:


  • Techno Talk – IoT vulnerabilities and Air-gen, electricity out of thin air
  • Net Work – a network-attached Freeview receiver, and problems with a Humax PVR
  • Circuit Surgery – impedance measurement and Howland current sources
  • PIC n’ MIX – Audio Spectrum Analyser – bandwidth expansion
  • Audio Out – Building the analogue noise generator described last month, and creating a variety of appealing synthesiser circuits.
  • Visual Programming with XOD –  an instant pushbutton timer
  • Max’s Cool Beans – Flashing LEDs and drooling engineers


Next month: 


AM/ MW/ CW Scanning HF/ VHF RF Signal Generator; Steering wheel Audio button-to-infrared Adaptor; Ultra-low-distortion Preamplifier with Tone Controls (Part 3); Micromite Robot Buggy; Visual programming with XOD.


PLEASE NOTE! The new website will become your one-stop shop for issue details, downloading files, PDFs, buying preprogrammed PIC microcontrollers and more. Our domain names will eventually click through automatically to the new web site.





Source code file

[433Mhz Extender; Cool Beans Pt 3; iCEStick tutorial; PIC n' MIX; XOD]


PCB artwork


As from July 2013 issue PCB artwork is available free to subscribers only.


Non-subscribers may purchase artwork files for a nominal sum. Please contact our Orders Dept for information or to place an order.


EPE Printed Circuit Boards


We can supply ready-made printed circuit boards (8-digit order codes) to the original design specification via mail order or from our Online Shop.

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