Welcome to my site, it has mostly technical topics together with some rather eclectic subjects such as (historical) British Naval slang and the words to British National Airs!

Educated in Electronic Engineering, I am a Chartered Engineer and specialise in power electronics and the design and use of microcontrollers. I have a wide ranging knowledge of these topics together with radio communications. For those who know of him or have read his books, I was tutored in my subjects by Professor Douglas Lewin.

I have significant experience of designing power electronic systems, from high power soft start inverters, through to 250KA (250,000A) battery discharge systems. I also designed microcontroller systems to manage governor and voltage regulation of 4MW diesel-generator sets. Latterly my career developed in computer systems and their management and I have specialised in large scale MRP-II systems; finite-element analysis systems with supporting expert system (AI) decision support systems and then progressed as a senior engineer as a Group Leader developing a wide portfolio of business and management skills. 

My ethos is to transfer as much of my knowledge to others in the most easy to understand way that I can whilst particularly avoiding obfuscation methods used by many that comes over as ‘knowledge is power’! Most of my current microcontroller projects use the Arduino, ESP8266 and ESP32 devices and all are documented on this web site for your use and reference. Code for all my projects can be found on GitHub under ‘G6EJD’.

As a UK Radio Amateur my callsign is ‘G6EJD’, which I’ve held since 1981 and I operate on the following bands: HF on 80M (80 Metres wavelength or 3.5Mhz), 40M (7.0Mhz), 20M (14Mhz), 17M (18.1MHz), 15M (21MHz), 12M (24.9MHz) and occasionally 10M (28MHz) together with VHF on 2M (144Mhz) and UHF (440MHz). I operate (QSO) using most transmission modes of SSB, FM, AM, CW, PSK, QPSK, HELL, FSK, MFSK, SSTV and Olivia, plus a whole lot more… I’m working towards a worldwide award known as eDX100 that requires radio contact to be made with 100 countries and so-far my country count is 85, so just 15 more to go.

These pages are provided by a Raspberry Pi 4 running the Apache web server.

If I’ve helped you, please consider treating me to a cup of coffee at my favourite café via PayPal. It also helps me maintain my feed of YouTube Technical videos by purchasing equipment, you can make a donation here: