Retro Arduino barometer - update and repair.

I built this analogue metered Arduino Barometer in about 2019, having worked superbly until recently: Firstly, the buzzer became faulty - then a toggle switch went intermittent. Whilst replacing these items and modifying the circuit (in a minor way), I decided to update its' Arduino script. I moved it away from Inhg to Pascals and improved accuracy with altitude. My barometer now works a treat, and I'm looking forward to many more years of use. This barometer is an excellent Arduino project.

Notes: An analogue meter can be affected by strong magnetic fields and personal static electricity - move your finger across its' facia, and it can become inaccurate! Wait a while, and the accuracy will return. Whilst analogue meters are brilliant at conveying a value at a glance and following a trend - they are clumsy at a precise resolution. The super-duper meters have a mirror behind the needle, so you can optically align for greater accuracy. The enclosure mustn't be airtight - the BMP280 sensor needs to read barometric pressure changes. A shoutout goes to a viewer: Geoff of Christchurch, New Zealand, who spotted a couple of errors in this video when I first uploaded it. Corrected, they now are - many thanks, Geoff.

The microphone used in this video is of my own design: https://youtu.be/01GiEWnfw8s *Please help me purchase more components for more projects/repairs. To make a donation: https://paypal.me/ThankyoufromBeamer?locale.x=en_GB Contact me: beamerelectronics@gmail.com #barometer #arduino #design #upcycling

Links: Air Pressure at Altitude Calculator: https://www.mide.com/air-pressure-at-altitude-calcu My Arduino barometer script: https://u.pcloud.link/publink/show?code=XZ8hKRVZdH4LDuVhnOLki6M6UEhpJY8nino7 ... https://www.youtube.com/watch?v=ZApk1mA2dpA