Learn Japanese with Song Lyrics (Houki Boshi from Bleach)
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How to calculate series resistor for LED
When we connect an LED to to a battery, we often need to connect a resistor is series to limit the current. I saw this question come up in a facebook group, and thought it might be useful to use this as a simple illustrative example of doing circuit design. The basic circuit we will
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It’s a Heartache
On the Australian TV Series Doctor Doctor, there’s a recurring piece of music that is playing using fingerpicking on the ukulele based on Bonnie Tyler’s hit song It’s a Heartache. A quick search on YouTube discovered that it comes from the lead-in of a music video by the Wellington International Ukulele Orchestra. I was keen
Digital Photography for Hams
This article describes a talk given at the Manly Warringah Radio society on digital photography, drawing parallels back to amateur radio.
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〜て-Form Song
This article contains a song to help Japanese language learners remember how to produce the 〜て form of verb.
Sony A7R4 Selfie Solution
One of the common complaints about the Sony A7 series of cameras is that they do not have a flip-around screen that allows you to frame the shot when you are taking a selfie. I managed to put together a solution for this out of some parts I had laying around. It consists of: Sony
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Should I use Back Button Focus on Sony A7R4?
I just recently acquired the new Sony A7R4 mirrorless full frame camera, and have been working through the focusing systems on this camera. One of the questions that comes up is whether or not to use back button focus. As you can see, it has an “AF ON” button on the back that would be
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Elecraft K2 Amplifier Keying Circuit
I have been building an Elecraft K2 kit radio, and I completed construction this Easter weekend. When I ordered the kit, I didn’t order the internal ATU or the 100W amplifier option, as I already have an Elecraft KXPA100 amplifier with KXAT100 ATU. However, this amplifier is designed to work with the KX3 radio, and
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Beverage Antennas
At my local radio club, one of the members likes to hop on the 80 metre band with his morse code key. We were discussing what might be some good topics for upcoming lectures, and he mentioned that he was curious about beverage antennas. I didn’t know anthing about this topic, so I thought it