Local interface

guillaume_smartcitiz · July 9, 2019, 3:03pm

Hi,

Is there an official way to retrieve sensor readings directly from the kit using only the local network ?

The only way that appears to me for the moment is to modify the firmware to send MQTT to a local host instead of your website (meaning I’m not sharing my measurements any more)

Thank you for your answer.

pral2a · July 16, 2019, 4:56pm

Hi,

If you want to retrieve them from the local network before they reach the smartcitizen.me platform there are two options:

As you suggested, you can run your own local MQTT broker. You could even run the broker on a Raspberry Pi and even use a tool like Node Red to feed the data into any other platform or even relay the data after to mqtt.smartcitizen.me. If you don’t want to change the end-point on the firmware, you could even change your LAN DNS to redirect mqtt.smartcitizen.me to your local server.

Here the configuration on the firmware:

github.com

fablabbcn/smartcitizen-kit-20/blob/2.1/esp/src/SckESP.h#L20-L24


#define NTP_SERVER_NAME "ntp.smartcitizen.me"
#define NTP_SERVER_PORT 80
#define MQTT_SERVER_NAME "mqtt.smartcitizen.me"
#define MQTT_SERVER_PORT 80
#define MQTT_QOS 1

Another option is to run the full Smart Citizen platform locally. That is maybe to complex for a home project but keep in mind it is opensource, and you could run an instance for your project.

Hope it helps!

guillaume_smartcitiz · July 17, 2019, 7:21pm

Thank you for your answer.

I’ll probably modify indeed the MQTT parameters to get them directly when I’ll have a little of free time in spare.