DALI-arduino

DALI LED Lighting Interface. Control LED Drivers with a microcontroller.

The code in qqqDali.cpp and qqqDali.h does not depend on Arduino, can be used in any C++ project by copying qqqDali_ATMega328.h and adding hardware specific code for a periodic interrupt and pin change interrupt.

Examples for Arduino ATMEGA328 included:

• Dimmer: Dims all lamps up and down
• Commissioning: Assign short addresses to lamps
• Monitor: Monitor DALI bus data

Needs a DALI hardware interface such as Mikroe DALI click. Or use this very basic DALI interface design for your experiments.

  DALI BUS Power   +---------+
      12-22V >>----| 100 Ohm |-------------+--------------------<< DALI +
                   +---------+             |
                                    \      |
                   +---------+   |\  |     |
       uC RX >>----| 10K Ohm |---|  >|-- --+  5.6V Zener Diode
                   +---------+   |/  |     |                 
                                      \    |                       DALI BUS
                                          /
                   +---------+          |/
       uC TX >>----| 220 Ohm |----------K     PNP Transistor
                   +---------+          |\      30V 250mA
                                          V
                                          |
         GND >>---------------------------+----------------------<< DALI -

NOTES:

• For this interface, reverse the polarity of TX in the code.
• Might not work with all DALI components because of unmatched voltage levels.