7 hours ago
(02-27-2026, 06:28 PM)Explliure Wrote:I'm new to the forum, so greetings to everyone. I'm a high school teacher who has been using Phyphox and its ability to connect sensors via Bluetooth for some time, so I'm very grateful to Sebastian Staacks and his colleagues at RWTH Aachen University, and to everyone who contributes to the forum.
I'd like to share an experiment that might be of interest to students studying the altern current.
With a lot of help (I don't know how to program in XML), I managed to get the code to display the brightness variations of light bulbs in Phyphox as a result of being connected to a 50 Hz altern current. The attached screenshot shows the brightness variations and how the time between 10 peaks is 0.10 s, which corresponds to a frequency of 100 Hz, as expected.
I'm using a phototransistor (for example, the TEMT6000) and an ESP32 board that sends data via Bluetooth. I've attached the sketch for the ESP32 and the XML file for uploading to Phyphox.
Thank you for sharing your experiment, that does look interesting : )