Asterisk drives cars, slot cars now.
The Open source IPPBX, PBX application Asterisk is known to have revolutionized the VoIP, IP Telephony arena. But some innovative souls putting Asterisk now to drive cars, two slot cars on a track.
The project takes advantage of Asterisk, the open source PBX, to take in the phone data and spit that out to a Java based soft phone. This soft phone takes in a SIP stream which I then take amplitude data from. I use that data, scale it a bit an send it serially to an Arduino board.
The circuit itself is quite simple. It uses a transistor to send voltage to the track (12v DC), and I use the incoming serial data to PWM..this allowing for a difference in speed.
The link will give you more info and photos with an up coming video.
Links;
Voice over IP controlled Slot Cars
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