Alles anzeigenBe careful when assembling it. R3's value needs to be higher, otherwise D3 will be blown.
With the 390 Ohm value the current through a Green diode would be a bit over 20 mA and you are right that it would be slightly high for a LED. I think I calculated on 20mA and then used the nearest resistor I got (unfortunately I should have used the nearest but higuer than the teorethical value).
The calculated value for 20mA is 425 Ohm, so please use the nearest higuer resistor you have.
jlopez: Thanks for the heads-up.
Also take into account that the values on the board are only valid for the colors I used in my setup:
D1. Yellow
D2. Red
D3. Green
In case you want to use other colors, you should recalculate the resistor values.
Don't apologize. It's my fault, too. 
