Teensy as USB Adapter for X-10 CM17A "Firecracker"

[johncc]

The last time I needed to control X-10 was years ago when PCs still had serial ports.

I didn't have a USB/Serial adapter around tonight so I threw this together.


The code was so simple, worked the very first time!

/* 
    CM17A Firecracker - USB Adapter
    
    ftp://ftp.x10.com/pub/manuals/cm17a_protocol.txt
    http://www.db9-pinout.com/
    https://www.pjrc.com/teensy/pinout.html
    Pin 4 DTR - Teensy 2 pin 22
    Pin 5 Ground
    Pin 7 RTS - Teensy 2 pin 23
*/

int DTR=22;
int RTS=23;
int LED=11;  // Teensy 2
void setup()   {                
  Serial.begin(38400);
  pinMode( RTS,OUTPUT);
  pinMode( DTR,OUTPUT);
  pinMode( LED,OUTPUT);
}

void loop()                     
{
    bool rts=Serial.rts();
    digitalWrite( RTS, rts );
    digitalWrite( LED, rts);  // light led for activity indicator
    digitalWrite( DTR, Serial.dtr() );
}

Using "Jimmy's" x10.py from http://www.averdevelopment.com/python/x10.html was also easy

john@mythbuntu:~/pyx10$ wget "http://www.averdevelopment.com/python/x10.zip"
john@mythbuntu:~/pyx10$ unzip x10.zip
john@mythbuntu:~/pyx10$ python x10.py /dev/ttyACM0 F1 On  # turn on coffeepot

Thanks Paul!

John