0
\$\begingroup\$

I have a SIM800L EVB GSM module connected to a Raspberry Pi and it is working correctly. However I did not find any pins related to speaker or audio output as shown in the wiring:

enter image description here

This is different than the old model which has pins for speaker and audio:

enter image description here

What am I missing here?

\$\endgroup\$
1
\$\begingroup\$

You are not missing anything. The functionality exists on the SoC (SIM(00L)) but is not connected to any external pins on some of the models.

You need to buy a SIM800L module with audio connected from the SoC to external pins.

Ref.: Datasheet

These are the pins on the underside of the metal capsule (SIM800L SoC.)

enter image description here

\$\endgroup\$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.