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Speak text during a call #255

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kaly7 opened this issue Nov 28, 2024 · 1 comment
Open

Speak text during a call #255

kaly7 opened this issue Nov 28, 2024 · 1 comment

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@kaly7
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kaly7 commented Nov 28, 2024

I want to play a text after a call with the ESP32. If I send a wav file through the ESP32 DAC, how can I match it to the MIC input of the SIM800? Signal levels? Any ideas for this?
@kaly7
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kaly7 commented Dec 9, 2024 •
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Working. :)
ESP32 GPIO25 (DAC0)
|
[R1: 10 kΩ]
|
+----------------+
| |
| [C: 1 µF]
| |
| +----> MIC + (SIM800 MIC_P)
|
[R2: 10 kΩ]
|
+-------------> GND )

SIM800 MIC - (MIC_N) --------> GND

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@kaly7