Speaker and microphone for GSM module

pavanvd:

Valen:
Ok, I couldn’t find an explanation of the pins on the board. Or a datasheet for it. If it does have analog audio out then it is probably only line-out level (1 volt peak-peak I think) You’ll need an amplifier for that. This should suffice to get enough volume out of that speaker:

https://www.sparkfun.com/products/11044

Thanks for the pointer. Would something like PAM8302 or LM386 do the trick as well? I think I can source them more easily here.

The PAM8302 chip seems functionally equivalent as the Sparkfun amplifier has. So yes, I guess so. Adafruit sells a similar amplifier board based on that chip. I don’t know about the LM386 or what is required for them to be honest. Never played around with those although they seem to be pretty popular.

Valen:
[EDIT2: Hooking the output up to your computer’s audio line-in should also make it audible through it’s speakers. Then it only costs a 3.5 mm jack-plug.

Ah ok. I can try that too. While it seemed that am AMP is required, I am trying to ensure if I am making other mistakes. Especially because the manufacturer wiki does not say anything about AMP and actually shows a pic where the output is connected to a headset 3.5 mm jack directly.

Thanks

It being connected to a 3.5mm jackplug on the image doesn’t imply anything about amplification. Needed or not. What is on the other end of the cable would or could, but they didn’t show.

[edit]That manual does state on page 14 “Thereceiver outputs only can directly drive 32 Ohm.”

So, your speaker are too big of a load for it. I don’t know what impedance earplug headphones have but they might work better.