#IPULSE JUKEBOX CODE#

The Lumosur Arduino code is an environment that allows an ESP chip to be safely discovered, to communicate with the controller and to send and receive updates and messages. I revised my circuits to get a better signal, cleaned and re-adjusted the contacts and sometimes it seemed to have done the trick only to find out that, after a while, the pulse decoding went crazy again. Sometimes it worked flawlessly, other times the results were completely wrong. I tried and tried but couldn’t get a reliable decoding.

Other folks have solved this with more or less complicated converter circuits, I built and tested a more simple setup and hooked it up to an ESP8266. And the pulses are not only alternating current, but are also extremely dirty – based on the fact that a mechanical wiper arm passes over contacts resulting in spikes and sometimes even small sparks. Here’s the problem: The 25V ac would of course fry any connected digital device. The digital scope confirmed that we had pulses. I carefully cleaned and adjusted all contacts and gave it a spritz of DeOxid. Create an electronic circuit to transform the 25V ac pulses into something an ESP8266 could work with and finally convert the pulses into a format that allows us to play a song. This would be a three part project: Make the Wall-O-Matic working and able to reliably send the pulses. In my case I wanted to decode the pulses myself and transmit the result via WiFi to our Lumosur IoT environment to queue and play the songs. The result is a stream of pulses that the jukebox would be able to decode in order to play the selected tune. Drop in a nickel, push the select buttons and a rotating switch blade (contact arm) passes over contacts that are wired to the selector buttons. A device from the 1950s that used to be installed in restaurants and bars and that allowed patrons to remotely select songs which would then be played from the jukebox.Īgain – this is a purely electro mechanical devices. Finally I was able to add a Seeburg 3W1 Wall-O-Matic to my collection. Think about the rotary telephone and it’s purely mechanically driven connection environment, teletype writers or early jukeboxes like the Wurlitzer 24 I restored. I like electro-mechanical devices and I am in awe each time I realize what engineers accomplished with cog-wheels, relays, levers and contacts.

And I almost found it’s limits – counting real-time pulse from a Seeburg Wall-O-Matic. I have programmed a multitude of different sensors with it. The ESP8266 is widely used in IoT applications.

Ipulse jukebox