Ericsson XY selector demo

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I got hold of a magnificent piece of electro-mechanical engineering by the Ericsson telephone company. It is an XY selector that was used in a certain type of telephone exchange, from the 1920s onwards. I brought the selector to live by adding an Arduino microcontroller. The code of the Arduino program is available here: GitHub.com/Godefridus/Arduino/blob/master/EricssonAHD_v1.ino.

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8 сен 2024

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Комментарии : 6

@pavlos500 Год назад

I appreciate all the work that went into the project and making of the video. This is the clearest explanation of the functioning of the XY selector that I have ever seen. Thank you.

@michaeltidbury4835 Год назад

The video made the operation of the selector much clearer. Thank you.

@Kapalek84 Год назад

Nice!

@yvr2002rtw Год назад

Is there any reason why you didn't create the audible ringing (eg. ringback tone) that the caller hears? Only the dialtone, busy tone and number not available tones were generated for this video.

@wimderkinderen1952 Год назад

Thanks for your feedback. The ringback tone is there but it is not audible in the video. I should have included a segment where I muted the ringing of the called phone. This is the Arduino code (available on github) where you see that a ringtone is returned to the caller: void ringBell() { if (ring) { tone(tonePin, 150); digitalWrite(ringerPin, LOW); etc

@yvr2002rtw Год назад

@@wimderkinderen1952 Can you do a video to an extension with no phone attached so that we can hear the ring tone? Also is there a way to create multi country profiles so that the Arduino can simulate the exchanges in different countries?