Peter M. Groen / DALI-Lighting-Interface

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Authored by qqqlab
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README.md
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1 -# DALI-arduino 1 +# DALI Lighting Interface
2 DALI LED Lighting Interface. Control LED Drivers with a microcontroller. 2 DALI LED Lighting Interface. Control LED Drivers with a microcontroller.
3 3
4 -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. 4 +The code in qqqDali.cpp and qqqDali.h does not depend on Arduino, can be used in any C++ project by writing hardware specific hooks for a periodic interrupt.
5 5
6 -Examples for Arduino ATMEGA328 included: 6 +Examples included:
7 - Dimmer: Dims all lamps up and down 7 - Dimmer: Dims all lamps up and down
8 - Commissioning: Assign short addresses to lamps 8 - Commissioning: Assign short addresses to lamps
9 - Monitor: Monitor DALI bus data 9 - Monitor: Monitor DALI bus data
@@ -25,7 +25,7 @@ GND ---+--------------------------+------------- DALI- @@ -25,7 +25,7 @@ GND ---+--------------------------+------------- DALI-
25 ``` 25 ```
26 NOTE: For this interface, reverse the polarity of TX in the code. 26 NOTE: For this interface, reverse the polarity of TX in the code.
27 27
28 -### Explanation of the circuit 28 +### Explanation of the DIY circuit
29 29
30 TX pin: The DALI bus needs to be powered with a 16V (9.5V to 22.5V) power supply, current limited to 250mA. In the circuit the 220 ohm resister is the current limiter (gives approx 50 mA with 12V power supply). Using a lower current allows us to use a common general purpose 100mA PNP transistor such as BC547 or similar. 30 TX pin: The DALI bus needs to be powered with a 16V (9.5V to 22.5V) power supply, current limited to 250mA. In the circuit the 220 ohm resister is the current limiter (gives approx 50 mA with 12V power supply). Using a lower current allows us to use a common general purpose 100mA PNP transistor such as BC547 or similar.
31 31