LA3ZA Radio and Electronics

Step-down converter based on LM2596. Note the damaged chip Ok, now I've done the test. My QRPLabs U3S runs off a 12 Volt power supp...

Powerpole voltage and current monitoring is quite nice to have. One can buy commercial meters, but due to the availability of nice and che...

I got my AP510 APRS tracker a little more than a year ago . It kind of worked, but not very well in my car. But after the tracker got a ...

Both the Baofeng UV-5R handheld UHF/VHF radio and the Sainsonic AP510 APRS tracker come with interface cables with pirated chips. These a...

The Pixie 2 is this minimal transceiver which I and many others have played around with and had lots of fun with. My 80 m version is ...

As I have mentioned several times on this blog, I have thoroughly enjoyed WSPR modes ever since Hans, G0UPL came out with the first Ultima...

It was time to upgrade the interior lights in my 2004 Volvo. I got some lamps from Ebay specified as 42 mm LED Festoon, 80-85 lm, 12V. As ...

As I wrote in my blog post a few days ago , I got the intensity down for night vision for my red flashlight. But I wasn't quite happy ...

I got this red LED flashlight as a Christmas present. But unfortunately the intensity was way too high for what I intended to use it for. ...

If you are like me, you appreciate electronic gadgets with dials and displays. So when I discovered this "USB detector",  I thou...

161.3 cm 27.0°  347.7 m/s Ultrasonic distance sensors can find the range out to 2-4 meters and are popular in e.g. robotics. Here...

We all want to package our electronics projects in some nice enclosure. An Altoids tin is often used - and I have used that a lot myself . ...

The 70 cm amateur band covers from 432 to 438 MHz  in Norway  and radio amateurs have primary status. Secondary users are among others remo...

AT Sprint rig in an Altoids box, itself contained in a video case. Digital voltmeter in lower left corner shows 12.0 Volts. (Click for l...