Serial data over SMS

Hello,

I am new to arduino, actually never worked with it. ...
I have a project in my mind which I would like to develop using arduino.
My field of work is sports timing ...
On sport timing events we use special chronometers on start and finish ... This devices are capable to output data over serial ports ...
Normally we use laptops connected to chronometers with special software ...
What I would like to do is following, can you tell me if this is possible with arduino.
On start I would like to have arduino box connected to chrono device over serial port, arduino would read data from serial and send this data over sms to second arduino box, located in finish area, this second arduino would read sms data and send it over serial to laptop ...

Regards Mac

Your post was MOVED to its current location as it is more suitable.

Do you know how to interpret the serial data from the devices? If so yes this is perfectly possible.

However why SMS? That could be subject to delays, something like ZigBee or LoRa modules might be better (and no SIM cards needed).

You might just be able to directly relay the serial directly over the wireless link, many devices support this and it saves you one Arduino or even both.

Do you have any security issues (ie are you happy if people can hack your system easily and send false values? - Presumably this is unlikely, but you might want to pre-empt such things).

Hi Mark.

Yes I know how to interpret the serial data ...
LoRa or other wireless devices are not good for my projects. Sometimes the distance between start and finish is 20Km, sometimes we work in woods, sometimes in canyons ... wireless devices can not cover such distances and situations ... Delay with sms is not a problem, racer can take 10-30 minutes to reach finish area .... Now we are using 3rd party HW which works over MQTT but they started to charge us quite a lot of money to use there solution ... I was thinking to use Raspberry PY and make my own MQTT solution, but PY is actually a small computer and I really do not like this ... :slight_smile: I want a device that boots fast ... Data which is sent over sms/network is a small string - BIB/start number and the time of day ... nothing else, security is not a problem for me ...

Regards Mac

Ah, I was imagining athletics events (its wise not to be vague when asking technical questions).

I've noted several threads about people having isssues receiving SMS, I don't know what the best GSM modules are and if there are compatibility issues to beware of myself, others will I'm sure... I did spot a possibly useful tutorial: https://www.youtube.com/watch?v=THCJWWsyh10