Mkr Gsm 1400 cell phone

Projects General Guidance
1

Hello, I'm fairly new to Arduino

I am trying to make a simple cell phone that can call and receive calls from one specific number. Would it be possible to do that with just the MKR GSM 1400? (And battery, mic, antenna etc.) or do I need a separate Arduino board as a controller?

ADDITIONALLY

I haven't seen any tutorials that explain how to send and receive AUDIO and calls with the MKR GSM 1400, only tutorials for send/receive text messages. I do NOT want text, only audio for this project. Does anyone know a good tutorial?

2

Likely that board is not suitable to do that. In my opinion You need a more powerful controller.

3

Which one would you recommend?

I'm assuming I would also need to buy a separate GSM shield if I'm going with a different controller

4

Try Google on "Arduino + audio". The Raspberries are often referred to being powerful.
How to, if possible, send audio via GSM, I wonder if it can be done. Other helpers know more.

5

Maybe these will help ?

https://www.google.com/search?q=voice+cakk+with+arduino&rlz=1C9BKJA_enAU1057AU1057&oq=voice+cakk+with+arduino&gs_lcrp=EgZjaHJvbWUyBggAEEUYOTIHCAEQABiiBDIHCAIQABiiBDIHCAMQABiiBNIBCTE4MDA5ajBqN6gCALACAA&hl=en-GB&sourceid=chrome-mobile&ie=UTF-8

6

I thought you were originally referring to the power of the GSM chip. Why can't I just use an audio amplifier circuit?

7

What's a cakk?

8

What power do You refer to? I referred to computing power moving lots of data fast.
An audio amplifier feeds a loudspeaker. How do You intend to use it?

9

An odd typo, but it works.

10

Aha, so you are saying that the MKR CPU isn't powerful enough to support making and receiving calls?

If I get an uno and some sort of GSM shield, like the adafruit FONO, I'd have better chances?

11

Oh, I googled that many times already, doesn't show anything new or useful to answer my question

12

can you enter AT commands and get a response?

I don't have a MKRGSM 1400 but using a SIM900 connected to a Mega I can receive calls OK, e.g.

+CFUN: 1
+CPIN: READ
Call Ready

RING

NO CARRIER

RING
ATA
ATA

OK

I get RING and then used ATA to accept the call

13

I don't know MKR board that well. I just feel, guess, it might not manage. You can always Google on "MKRGSM 1400 + Audio".
An UNO is surely less suitable.

14

An audio amplifier will always beed needed.
Speakers eed some electrical power and the audio bytes shuffling needs some computing power.

15

with the SIM900 (see post 12) to receive/send calls I use the microphone and headphone jacks

looking at SARA-U2 documentation the MKRGSM 1400 uses a digital audo interface
in particular the SARA-U2 datasheet states
2.6 Audio
SARA-U2 modules have one 4-wire I2S digital audio interface (I2S_CLK, I2S_RXD, I2S_TXD and I2S_WA) that can be configured by AT commands in PCM or in normal I2S mode. (For more details, see the u-blox AT commands manual [4] and the SARA-G3 and SARA-U2 series system integration manual [6].)
SARA-U2 modules provide a digital clock output (CODEC_CLK) for an external audio codec.

the mkr-gsm-library-examples includes making a voice call and then hanging up
however, it appears you require a codec to process the voice data

16

This topic was automatically closed 180 days after the last reply. New replies are no longer allowed.