The Sense-it 3 is a fully featured piece of hardware for measuring all kinds of things. In this article I will share my experiences in using this device to start tracking assets including temperature and humidity.

The device

The Sense-it is a nice looking device equipped with a single button. It comes in a small box and can easily be brought online with the provided instructions.  It can measure temperature, humidity, light, door opening and closing, vibration and magnet but not all at the same time, you will have to select a single mode. You can configure to send data on request by pressing the button, have it be triggered by some event or every hour or period you like. The communication goes via Sigfox.

It has a nice web application where you can manage all your Sens-it devices and where you can do some more advanced configuration of your device. You can also download a Software Development Kit (SDK) which allows you to use the sensors however you want. All in all a very nice device which gives great out of the box functionality and also allows more advanced use cases.

I wanted to test how I can integrate this device into the MEUNGO platform. The MEUNGO platform is intended to integrate multiple different types of devices and act on the aggregated data. Sense-it gives you the option to define notifications to send e-mails, SMS or invoke web-hooks (callbacks) when data of the device arrives.  Although I could have used the web-hooks to forward the data from this device I decided to go one level deeper and use the web-hooks in the Sigfox backend to forward the data to MEUNGO. When you do this you can no longer use the Sense’it web application to configure the device. In this setup Sense-it is no longer connected to the device, if you really care where your data goes and don’t want Sense’it to have any then this is an option.

To make the Sigfox forward the data as soon as it arrives in the Sigfox backend I configured a callback in the Sigfox backend. MEUNGO has a standard connector to the Sigfox backend so this is plug and play. Next the MEUNGO platform needs to understand the payload. Sense-it has this very well documented and together with the payload converter in the MEUNGO platform this was up and running in a heart beat.

In the post 1608 I described how to get the 1608 device online so now the Sense’it is online we can compare the sensor readings from both devices. The MEUNGO platform allows you to configure custom dashboards in which you can drag and drop all your devices in several different visualizations.

In this dashboard I added three visualizations:

  • one Map which only will show 1608 locations because the Sense’it does not have GPS
  • one Gauge which shows the real time temperature reading from both devices
  • one Graph which shows the historical humidity and temperature reading from both devices

In the left upper corner you can make a selection out of all registered devices. The N-001 device is the 1608 device and the S-001 device is the Sense’it device. It is beyond the scope of this post but it is interesting to see that, although the devices are sitting next to each other on my desk, the readings can be quite different especially humidity.

Conclusion

The Sense’it is a very nice device, it works out of the box. You can use the node as is but also completely configure or program it to your needs. The documentation has everything you need. It was no problem to connect the device to the MEUNGO platform and to integrate its data with other device data coming from other sources. A nice improvement would be for the device to have GPS plus a more technical thing to allow the user to use callbacks like Sigfox (especially cross-account AWS callbacks).