In the Wiki, here: https://github.com/BelaPlatform/Bela/wiki/Salt
It says inputs and outputs are like this:
Audio I/O L: audio channel 0
Audio I/O R: audio channel 1
CV I/O 1-8: analog channel 0-7
SWITCH1 in: digital channel 6
T1 in: digital channel 15
T2/SWITCH2 in: digital channel 14
T3/SWITCH3 in: digital channel 1
T4/SWITCH4 in: digital channel 3
T1 out: digital channel 0
T2 out: digital channel 5
T3 out: digital channel 12
T4 out: digital channel 13
LED 1 out: digital channel 2
LED 2 out: digital channel 4
LED 3 out: digital channel 8
LED 4 out: digital channel 9
PWM out (for LEDs): digital channel 7

But in PD patches it seems to be different entirely and I can not see a correlation either.
Led 1 seems to be dac 13, but in examples it is 11...
Whats with the PWM?
The example patches are quite hard to understand & messy. Its giving me so much frustration. Pure data is supposed to be fun, and it is, but not on salt..

If someone could just make a drawing on salt & salt+ photo with corresponding channels on each input/output, it would be much more clear.

    Hi, on Bela there is always a translation process when going from "Bela channels" to Pure Data channels. This is detailed in the Pure Data examples, but for simplicity, picking up your suggestion, I updated the wiki with the Pure Data channel numbers. I also added a more direct reference to the abstractions available to deal with the Trigger inputs/outputs and the LEDs, which are the recommended way of doing it in Pd.

    radiowaves Whats with the PWM?

    that is explained in the "LED and PWM" section

    radiowaves Led 1 seems to be dac 13, but in examples it is 11...

    where is it?

    Hope this helps, let me know if you still have doubts.