Nowadays breadboards are often sold with a breadboard power module and a bunch of jumper wires included. This power module allows you to easily apply 5 and/or 3.3 volt to the power rails of the breadboard using an external power source. However, often you need a higher voltage in your project as well, maybe 9 or 12V to power your Arduino, relay, audio amp, etc. This little tweak shows you a simple yet effective solution.— more →
Time… For some reason we tend to stick to an ancient system which has no logic at all. Let’s be honest: if we would invent a new time system nowadays, it would probably not have 7 days in a week, 24 hours in a day and 60 minutes per hour. It would be something decimal, like all other units in the metric system. So it’s about time to get rid of this outdated system and switch over to decimal time, by building your own Decimal Time clock!— more →
During the summer season bats fly around almost every day in the twilight. I spot them in the evening, when they fly along our house and hunt for small flying insects, mostly mosquitoes and flies. Their soundless air show is a joy to watch.— more →
Recently I have transferred the CLog software to my GitHub repository. I’m currently centralizing my code at GitHub since I wanted to get rid of sourceforge.net (my previous repository for CLog) and prefer GitHub nowadays. — more →
The Neophyte receiver is an easy-to-build receiver, already built by lots of people. Many radio clubs used it as a project for starting builders. It was developed by John WA3RNC and first published in QST, February 1988. The circuit can be used to create either a 80m or a 40m receiver, depending on a few capacitors. The 60m band is just in between, therefore I decided to find out the correct caps for this new amateur radio band (well… at least new in the Netherlands, from December 2015).
I thought it would be nice to chat with some local radio amateurs on my way back home. I often talk to Adrian PA0RDA while driving home (by car) after work, using the local 70cm repeater PI2ZST, so I decided to prepare my bike for this UHF band. — more →