Hi there! Although I’ve been playing around with Arduino for a while, I am completely new to sound engineering issues, which I am running into right now, so I hope some of you can shed some light on my project! This is what I intend to do: My goal is to have 3 old cord phones rung from an Arduino…

[image] Generating rings | Details | Hackaday.io Ringing the 100+ year old bells turned out to be one of the more challenging things to accomplish. Due to the vast distances that signals had to travel to reach rural subscribers in the late 1890's, the ring signal is actually 90 volts AC …

Ringing old phones from amplified audio - Amplification issues

Other Hardware Audio

DrDiettrich September 24, 2025, 1:54pm 13

There is something wrong with these voltages. Is the power supply current rating high enough?

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Ringing old phones from amplified audio - Amplification issues

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