2.5 Lighting LED

The Lighting LED is an output of the DALI Slave. It is driven by a PWM signal generated by the ATtiny817. The brightness of the Lighting LED can be changed upon the duty of the PWM signal. The drive pin of ATtiny817 is PA5.

The DALI system is widely used in the lighting system. The Lighting LED can be regarded as a lighting target device. While working together with the DALI Master, the user can easily get a control feedback from the brightness change of the Lighting LED.

Figure 2-9. Lighting LED
Figure 2-10. Schematic of the Lighting LED