February 19, 2023 by Mirko Pavleski
This time I will present you a very simple way, using an Arduino microcontroller and BME280 Sensor, you can make an electronic Barometer + Barograph that presents the results in graphic form on a 20x4 LCD display.
A barograph is a barometer that records the barometric pressure over time in graphical form. This instrument is also used to make a continuous recording of atmospheric pressure.
The former Barographs use the pressure-sensitive element, which is linked to a pen arm in such a way that the vertical displacement of the pen is proportional to the changes in the atmospheric pressure. This pen marks pressure changes on specially marked paper that is placed on a disc that rotates 360 degrees over 24 hours. In the picture below you can see what a Barograph from the last century looks like.
And finally, the device is placed in a suitable box made of PVC material with a thickness of 5 mm, and covered with self-adhesive colored wallpaper. Let me mention that the BME280 sensor is placed inside the box, because in this case we measure only the pressure, which is independent of the temperature
