Hi together.
I need some more 'eyes' in the internet I am looking for a (relative) small GSM board. But I need it to make calls. So I need audio input/output. Just one board which I found fits this criteria, but it was s***. All other which I found were either with connection (Jack or Pin) for Mic and speaker but to big or nice small but without any outgoing pins for audio commuication.
For example:
That has a nice form factor, pins for microphone and headset... but crap (bad interference when picked up the call and a second later restart of the module... tried everything... I guess something wrong with the hardware):
This is great, works (i have one) and output for mic and speaker via jack... but to big:
https://amzn.to/2PIIkf6
And this is nice small, but no audio output:
Is there any small (working) gsm module out there which I can us for calling (audio output)? And I need it actually only for calling... if it is important.
I couldn't find any alternative yet.
Thanks in advance.