Open Source Arduino Stepper Motor Barometer displays air pressure – Electronics Weekly

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Open Source Arduino Stepper Motor Barometer displays air pressure

In a nutshell, the weather forecast on the barometer uses eight subtle LEDs and – using the current air pressure and rate of change over the last three hours – the weather is predicted on the lights.

Featured on the Arduino Project Hub, the project is open source and uses an Arduino UNO and Nano (above). It displays the pressure via a 12″ (300m) analogue display using three stepper motors, but this is just to scratch the surface of all the work involved. It’s a big, impressive project – read it in full (there are 28 sections of progress).

According to your taste, there is a choice of two dial designs – modern or classic classic. The maker, Brett Oliver, expands:


“Air Pressure in hPa (Hectopascal) is displayed on the large main dial and is updated every 10 minutes. There are 2 secondary dials, one shows the last 6 hour pressure change and the other shows the last 3 hour pressure change.”

“The 3 hour dial has an increased resolution of 0.5 hPa as this is used for weather forecasting. There are LEDs to show when extended range is in use on all three displays and also LEDs to indicate the weather forecast off the 3 hour display.”

You can see a GIF in action below:

Monitor current conditions and changes in air pressure on this beautiful barometer: https://t.co/LDftMHIj8L pic.twitter.com/fDDmW0Ivpp

— Arduino (@arduino) April 29, 2020

Read more about the barometer project. You know you want to give that screen a little tap!

[Via twitter (Arduino)]

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