Hi everyone,
In the past I prepare and use an arduino Yun to record data coming from sensors and store it into the sd card, then upload the data files on ftp server. Now I would implement a graph and alarm using a cayenne dashboard. The problem is that the sensors are not always powered up, but to reduce the consumption I turn on the power only during the acquisition an then turn it off since the new acquisition (acquisition frequency every 2 or 3 hours).
It’s possible to send the data to the dashboard (for example using virtual chanel) only when the power is on ?
Thank you
Cristiano