marxy's musing on technology

Progress with the $200 CNC is slow but starting to get there. It seems that I have a Woodpecker CNC board that has an embedded Arduino N...

The Wyong Field day today turned out to be very pleasant despite predicted rain. This year I again helped out on David's digital voic...

I really like the Airspy HF+ SDR. Mine came with firmware 1.0 and I found it a bit of a puzzle to upgrade to the latest version 1.5 dated 2...

The KX3's front face controls makes it vulnerable to damage when being carried with other items. In the past I've put it in a solid ...

Just over five months ago we installed 3.3kW of solar electric panels on the house. I've just received the first bill for a three month ...

When Peter, VK2EMU, showed an amazing CNC milling machine at the recent ARNSW Home Brew group show 'n tell meeting and then mentioned ...

Following on from the test night out at Cattai National Park, I've just returned from a ten day trip in northern NSW. I stayed at P...

Today's QRP by the harbour event in McIlwaine Park at Rhodes was a lovely day and a fine collection of visitors. I strung out an en...

Since the day I bought the van the coolant warning light has shown from time to time. Usually it would come on when I started driving and ...

There are some interesting car jump starter battery packs available that claim to have amazing capacity and flexible charging and power su...

The van is lovely but I'm still working through mechanical problems before I head off on a longer trip. So far I've had to repla...

At the recent ARNSW Home Brew Group meeting I showed ADS-B decoding and even ran the slide show on a Raspberry Pi . (It is a big sluggish r...

An enjoyable meeting of the ARNSW Home Brew Group at Dural today. Along with the general social catch up, sausage sizzle, cups of tea and...

The challenge with this van is to have enough power to run a small fridge full time with available power for a bit of ham radio. So far, wit...

The van came with a 100W solar panel on the roof and a wooden box containing batteries and wires. The seller told me that it had 200AHr of c...