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Turn a Typewriter into a Printer

I bought a Smith-Corona PWP 78DS typewriter from Good Will for under $20. The daisy wheel print quality was perfect, and it included a self-contained word processor. However, there was no way to use it as a printer. I decided to emulate a membrane keyboard with an Arduino Nano Every, so that either an added serial port or the existing keyboard could input text.

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Build a Motion Activated Nightlight

Light up your living space with a customizable motion-activated nightlight. Use this as a working product in your home to safely light your way in the dark, or as an educational project for your children or grandchildren.

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Build a General-Purpose Raspberry Pi Data Logger Hat

This article describes the process of designing and building a custom Raspberry Pi HAT circuit board. This HAT works with a Python script to record and live plot battery voltage, temperature, and capacity. The ability to log data over an extended period is an included useful feature.

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Build the Lambda Harp

This article describes the theory, construction, and final project functionality of a musical circular harp that utilizes an off-the-shelf concert organ which provides 160 possible instrument sounds and full MIDI capability. Plus, it looks really neat.

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BUILD A ONE INCH SCOPE

What could be more fun than building a miniature oscilloscope? Not one with an LCD screen, but a scope with a real live cathode ray tube just one inch in diameter. All the parts -- including two 6AU6 vacuum tubes -- will be housed in a 5” x 7” x 2” box.

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BUILD A SOFTPOT RIBBON CONTROLLER FOR ANALOG SYNTHESIZERS

The last few years have seen a massive resurgence in the popularity and availability of voltage-controlled synthesizers. The very simple ribbon controller we’ll construct in this article will be used to control any of the myriad voltage-controlled modulation opportunities provided by the typical voltage-controlled synth.

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Build a Vintage Radio Sweep Alignment Instrument — Part 2

In Part 1 of this series, I covered basic sweep alignment theory and construction/operation of an all-in-one sweep alignment instrument I dubbed the WhippleWay Sweep Alignment Board (or WSAB for short). In Part 2, I’ll describe sweep alignment procedures for AM and FM radios and give an actual example of each.

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