using DALI protocol to communicate with ballast

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El-Maker

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Digital Addressable Lighting Interface

Hello,

please can anyone help me with this matter? I´am stuck! I don´t have that much experience to tell that there is obvious error. I hope someone will shoot straight from the hip.

I implemented code,. that is working right.
and then i made circuit which making specified voltage.
It´s not exact, I tried to follow specification.

voltage should be:

low level = -4,5min to 4,5max

high level = 11,5 to 20,5

on circuit board voltage low = 3.6V High = 19.6V
and I have 1v drop when connecting it on wire.

supplyed mA should be max 250mA I have +- 120mA
I don´t think it´s critical here, because I have only 3 OSRAM ballast connected.

please read specification **broken link removed**

Look on osciloskope picture and circuit. (in the schematic i use different components and values)
karanox | seznam alb ? rajce.net


If you needed a code, I will send it too

feel free to point obvious


btw. I have no previous experience with ballast or fluorescent lamps (wiring).
 
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