Good evening!
System - only Raspberry Pi 3b+
Long thought about replacing the rotary encoder analog potentiometer
. I connected the ADS1115 ADC and connected a potentiometer to it. As a code, I found it found in
link
While experimenting with the output of headphones. Amixer 'PCM'
The code works, but somehow strange. The volume values in alsamixer and amixer are different. I will give an example. Amixer - 84%, alsamixer - 52%
With what it can be connected?
System - only Raspberry Pi 3b+
Long thought about replacing the rotary encoder analog potentiometer
. I connected the ADS1115 ADC and connected a potentiometer to it. As a code, I found it found in link
While experimenting with the output of headphones. Amixer 'PCM'
The code works, but somehow strange. The volume values in alsamixer and amixer are different. I will give an example. Amixer - 84%, alsamixer - 52%
Code:
amixer
Simple mixer control 'PCM',0
Capabilities: pvolume pvolume-joined pswitch pswitch-joined
Playback channels: Mono
Limits: Playback -10239 - 400
Mono: Playback -1300 [84%] [-13.00dB] [on]Code:
Card: bcm2835 ALSA F1: Help x
x Chip: Broadcom Mixer F2: System information x
x View: F3:[Playback] F4: Capture F5: All F6: Select sound card x
x Item: PCM [dB gain: -13.00] Esc: Exit x
x x
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x x x x
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x xaax x
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x xOOx x
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x 52 x
x < PCM >With what it can be connected?
