Open Hardware: Arduino and Raspberry Pi
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Woody brings class to the world of RPN calculators | Arduino Blog
RPN (Reverse Polish notation) is a method for writing or entering mathematical calculations wherein operators come after operands. For instance, to calculate the product of 3 and 4, you would type: 3, enter, 4, enter, multiplication. This is unfamiliar to most of us, but was common for Hewlett-Packard’s early digital calculators and is still used in some programming languages, like Forth. Some people prefer RPN calculators and this one, called Woody, is the most beautiful of the bunch.
Woody is a fairly simple RPN calculator, which was its entire purpose. Most of the RPN calculators available are complicated scientific or graphing calculators. Shiura wanted basic calculator functionality, but with RPN. It is also gorgeous. The enclosure is a solid chunk of walnut wood, which was milled on a CNC router. Other than a large power switch on the back, the only features are 19 keys and a dot-matrix style LCD screen.
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Raspberry Pi Shortages Could Last Another Year | Tom's Hardware
In a recent interview with Micro Center, Raspberry Pi CEO Eben Upton, Upton has talked about the ongoing Raspberry Pi shortage. It looks like we are set for a further year of Raspberry Pi shortages, and between 60 and 70% of boards going into the industrial market. Many thanks to LeePSPVideo for bringing this story to our attention.
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How to Control LED Brightness on a Raspberry Pi With PWM - Make Tech Easier
If you had fun making LEDs blink on a Raspberry Pi, wait until you hear about controlling its brightness! In this guide, we work with a pair of buttons to adjust the led brightness on a Raspberry Pi.