Latest from the Blog
Rebuilding My SDR Tuning Knob in Spotted Gum
A while back I made a Tuning Wheel For SDR Radio on my PC Using an Angle Sensor. When plugged into a PC, this behaves as a mouse wheel. I’m using it as a tuning knob for SDR software. It works well but I was never very happy with the enclosure. I guess ‘enclosure’ is…
A communications speaker: Rescuing an AR-7 from the Tip Shop
We have developed a habit each Friday to go to our local Tip shop. They often have a few old speakers stacked in a corner. I don’t need any more but I always have a look, just in case there is something special that wants to come home with me. Normally there are a couple…
Comparing MT6701 Modules for Rotary Encoder Replacement
I recently came across a discussion on Reddit about MT6701 working modes, where someone referenced my earlier posts on using a magnetic sensor as a rotary encoder. That prompted me to look more closely at the different MT6701 modules currently available and how suitable they are as drop-in replacements for mechanical encoders. What’s the point…
Front Panel Designer: Free Software for Laying Out Project Panels
I have a great deal of trouble laying out items for project front panels, particularly where multiple holes have to be aligned. I don’t have a CNC router or other high tech tools. I just have old basic tools. I do have a basic saw bench but I think it is at least 70 years…
Explore Classic BBC Documentaries on YouTube
I watch quite a bit of YouTube and over time I have found some I recommend following. BBC archive is one of these. It is an official archive channel from the British Broadcasting Corporation that curates and publishes historical BBC television content. I like the calm, slow, deliberate style instead of the modern fast-cut media.…
Thoughts After Building a SI4732 AM, LW, SW, FM Receiver
I’ve been working on a SI4732 radio for nearly two months and it’s finally finished. The SI4732-A10 is a cheap little IC that contains almost everything needed for an LW, AM, FM, and SW radio. It is controlled through an I²C interface. There are lots of radios out there based on this design, including the…
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