Ian Renton

Software engineer and builder of robots
Bournemouth, UK

Hi! I'm Ian. My hobbies include tinkering with robots, radios and computers. For work I do the same stuff but get paid for it. I'm also a keen amateur cook, gardener and photographer.

You can email me at ian@ianrenton.com, view my CV, or find me on the air as MØTRT.

Recent Projects

UKBOTA n-fer finder

Another fusion of my previous amateur radio mapping Python tools, this script finds areas where the activation zones of three or more bunkers overlap in the UK Bunkers on the Air programme, and outputs the result as KML.

Check out the project →
QSO Map Tool

Following the shutdown of the tool I used to make QSO maps for my blog posts, I decided to implement my own. I have expanded it to include some extra features I wanted to see, such as custom icons for outdoor activities, changeable basemaps and marker sizes, etc.

Use the web application →
POTA New Park Finder

For anyone chasing Parks on the Air (POTA) completion in their local area, this web-based tool shows local parks coloured according to whether you, or anyone, has activated them. POTA New Park Finder is a synthesis of my two recent Python-based utilities for POTA, but reworked as an interactive web application that is free for anyone to use.

Use the web application →

Famous Projects

Raspberry Tank

The Raspberry Tank was possibly the first tank-like robot powered by a Raspberry Pi, way back in 2012. It’s smartphone- or laptop-controlled, streams video from its webcam, fires plastic pellets and can navigate autonomously.

Read more →
Field Spotter

An easy-to-use, mobile-first Amateur Radio spotting tool for POTA, SOTA & WWFF. It provides a geographical and band position display, with filtering, to allow you to easily find park-to-park and summit-to-summit contacts.

Read more →
Plane/Sailing

“Plane/Sailing” is my home tracker for aircraft, ships and more! It receives radio signals via antennas on my house, processes them to share with popular tracking websites, and displays the combined results on a website using military symbology.

Read more →
Big Mouth Phatt Bass

To quote Winston Churchill, “No hour of life is wasted, that is spent making a Billy Bass play techno.” Big Mouth Phatt Bass is a Billy Bass hack using an ESP32 microcontroller to sync the fish motion to a variety of new songs.

Read more →
Linux on Linx 1010B Tablet

A guide on how to install Linux, plus a few bonus operating systems, on the low-cost Linx 1010B Windows tablet.

Read more →
Roast Dinner Timing Chart

Some Javascript magic to help you cook the perfect Sunday roast. Simply select your ingredients and a time to serve, and it will generate you a list of timed steps.

Use the web application →
Hypixel Skyblock Bazaar Flipping Calculator

A quick weekend project to help my kid make money in the Hypixel Skyblock Minecraft server, this simple JavaScript tool has rapidly become the most searched-for of all my software.

Use the web application →

Older Projects

Home Meteogram Display

My home Meteogram display is a passive weather and calendar display that lives in the kitchen and provides a customised weather forecast for the coming days on an ultra-wide screen.

Read more →
USV-01 “Harry Paye”

USV-01 “Harry Paye” is an off-the-shelf remote control boat refitted as a testbed for an autonomous navigation system, capable of speeds up to 40 knots.

Read more →
Quadcopter

Because the Raspberry Tank was confined to just the two boring dimensions, I built a quadcopter and put a Raspberry Pi on that too. It features live video streaming and is switchable between remote and autonomous control.

Read more →
All-Terrain Pi

The All-Terrain Pi is a “off-road” remote control toy fitted with a Raspberry Pi, with live video streaming, controllable by touch/tilt input from a smartphone, and capable of running programs written in Scratch.

Read more →

More Projects →

Blog

Back Here Again: A Return to Win Green, and a Year of Portable Amateur Radio in Review

Written on Sunday 29 Jun 2025

Win Green, the highest point in Cranbourne Chase. From the small copse of trees on top of this hill, you can see for miles in every direction; to Stourhead in the north, towards Southampton in the east, and to the south, all the way to home and the sea. Panorama...

Read more →
Flashing OpenGD77 on the Retevis RT-3S

Written on Friday 27 Jun 2025

A while back I purchased a Retevis RT-3S radio, as I wanted to try out the OpenGD77 firmware’s advanced features for working satellites. I have now managed to flash the OpenGD77 firmware onto the radio, thanks to the information detailed on this page, this official thread and this video. However,...

Read more →
POTA Activation Report: The River Frome

Written on Monday 23 Jun 2025

GB-2522 River Frome Site of Special Scientific Interest had stood unactivated for around nine months, and had been on my to-do list for almost that long as well. The SSSI stretches all the way from Dorchester to Wareham, but encompasses only a few tiny scraps of riverbank—mostly, it’s just the...

Read more →
Bunkerfest 2025: The Hike to the Huff Duff

Written on Monday 16 Jun 2025

Despite Saturday’s poor band conditions on 40m, I was saved from a disappointing activation by the huge number of Bunkerfest stations on the air. But while I was benefitting from Bunkerfest, there was no bunker near my summit, so I wasn’t really contributing. Of course I couldn’t let that stand,...

Read more →
OARC SOTA Day 2025: Nine Barrow Down

Written on Sunday 15 Jun 2025

Nearly a year ago, OARC SOTA Day 2024 provided me with the excuse I needed to awkwardly step onto a hill, set up some kit, and start my journey into the world of outdoor amateur radio. I think it’s fair to say that’s been a success. And so when June...

Read more →