3D printed PCB assembly jig
16 February 2026 7 min read
Building an adjustable 3D printed PCB assembly jig to hold circuit boards when soldering
Electronics
Hands-on electronics projects, documented with the detail you need.
Shimano Di2 to Bluetooth Keyboard remote control mod
29 November 2025 13 min read
Modifying a Shimano Di2 road shifter to control virtual shifting in Rouvy and MyWhoosh and a smart trainer using Seeed Studio XIAO nRF52840 module as a Bluetooth Keyboard
Shimano Di2 to Zwift Click v2 remote control mod
15 November 2025 13 min read
Modifying a Shimano Di2 road shifter to control virtual shifting in Zwift and a smart trainer using Zwift Click v2 controllers
Raspberry Pi Pico, LoRa & Home Assistant remote soil monitoring
17 May 2025 19 min read
How to monitor soil moisture levels on our allotment and view the data in Home Assistant using a pair of Raspberry Pi Picos & LoRa radio modules to send and receive the data
Introducing a blog for Retro Computing Enthusiasts, Retro Bits and Bytes
13 January 2025 3 min read
We have launched a new blog dedicated to all things retro computing and classic computers from the 1970s, 80s and 90s
Rigol DHO804 Oscilloscope Quiet Fan Mod
12 December 2024 7 min read
We fitted a quiet Noctua fan using a 3D printed mount to the back of our Rigol DHO804 oscilloscope to make it quieter when in use
Zwift ESP32 Bluetooth Wireless Keyboard Controller
27 October 2024 13 min read
Making a custom controller for the cycling training software Zwift, with a ESP32 Feather Bluetooth wireless keyboard controller using a Adafruit ESP32 Feather V2.
Monitoring Air Quality with the AirGradient Open Air Outdoor Monitor and Home Assistant
23 October 2024 4 min read
Using an open source air quality monitoring system from AirGradient, we have added outdoor air pollution data logging to Home Assistant and our long term data logger online.
Amazon Echo Spot Teardown - Smart speaker with LCD
11 September 2024 31 min read
Welcome to a in-depth teardown of the 2024 Amazon Echo Spot Smart Speaker with LCD display. In this blog post, we'll be taking a closer look at the inner workings of this popular smart home device, uncovering the components that power its advanced features, and exploring its construction
PartFinder 2.0 Core component inventory manager
21 June 2024 11 min read
This is a new release of the PartFinder component inventory manager I released four years ago in March 2020 which now runs on Windows, Mac and Linux.
ESP32 RGB Microscope LED Ring Light
13 April 2024 15 min read
Designing a new RGB LED ring light for our microscope with an ESP32 WiFi controller using a manual control and web interface
Fujinon Pro 2010 Night Vision Scope Infrared LED Mod
30 January 2024 4 min read
We added an infrared LED into our Fujinon Pro 2010 night vision monocular to help with night vision illumination
Three Elgato Key Light remote control using an ESP32 Wi-Fi module
26 January 2024 15 min read
Building a remote controller for three Elgato Key Lights using a low-cost ESP32 Wi-Fi module with push switches and indicator LEDs
BOBOVR M3 Pro battery pack inductor noise fix on Meta Quest 3
25 November 2023 5 min read
Modifying a BOBOVR M3 Pro VR headstrap battery for the Meta Quest 3 to reduce audible noise from the battery pack.
Buying Used Test Equipment from Ham Radio Rallies
21 August 2023 9 min read
Visiting FRARS Hamfest in Wimborne and buying used test equipment from Ham radio rallies