Good morning!
I discovered yesterday the PT2258.
Since I do not know so much about analog electronics I just ask here.
My use case would be the following:
I have many sound sources in the living room, which I want to switch automatically (prioritized).
So several (stereo) inputs, 1 stereo output.
The PT2258 seems to me to be suitable for this. I could use a Teensy 3.2.
However, I want the Teensy to scan all audio sources and then switch on the one with the highest priority.
So I thought to use two PT2258.
One to switch the audio, the second would switch all 6 sources in sequence to the Teensy's analog inputs every few ms to determine the one with the highest input level. Of course I only need the level there.
My question is how to connect the outputs of the second PT2258 to the Teensy:
a) Do I use 10uF there as well?
b) Do I use a low pass?
c) Do I need resistors to raise the "zero line" to about 1.6V? (or a potentiometer?)
d).. or what would be the best way?
I want to use this example from the datasheet for the switch:
e) Can I connect the outputs of the first PT2258 together (after the capacitors) (To get only one (stereo) output)
The example-schematic above is not clear to me, for the outputs.
Datasheet:
https://www.electrokit.com/uploads/productfile/41011/PT2258.pdf
Thanks a lot
p.s. I'll use 6 stereo inputs, so all the above 2x.
I discovered yesterday the PT2258.
Since I do not know so much about analog electronics I just ask here.
My use case would be the following:
I have many sound sources in the living room, which I want to switch automatically (prioritized).
So several (stereo) inputs, 1 stereo output.
The PT2258 seems to me to be suitable for this. I could use a Teensy 3.2.
However, I want the Teensy to scan all audio sources and then switch on the one with the highest priority.
So I thought to use two PT2258.
One to switch the audio, the second would switch all 6 sources in sequence to the Teensy's analog inputs every few ms to determine the one with the highest input level. Of course I only need the level there.
My question is how to connect the outputs of the second PT2258 to the Teensy:
a) Do I use 10uF there as well?
b) Do I use a low pass?
c) Do I need resistors to raise the "zero line" to about 1.6V? (or a potentiometer?)
d).. or what would be the best way?
I want to use this example from the datasheet for the switch:
e) Can I connect the outputs of the first PT2258 together (after the capacitors) (To get only one (stereo) output)
The example-schematic above is not clear to me, for the outputs.
Datasheet:
https://www.electrokit.com/uploads/productfile/41011/PT2258.pdf
Thanks a lot
p.s. I'll use 6 stereo inputs, so all the above 2x.
Last edited: