Hello, i want to ude the BBB with multiple sensors like temp, humidity, smoke,

Electronics
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Hello, i want to ude the BBB with multiple sensors like temp, humidity, smoke, leakage sensor(water detection)… I think that’s possible, but is is it also possible to create a 19" rack case and connect the sensors via RJ45 cable and it doesn’t matter which port I use? (I hope you know what I mean)…

Thanks in advance
Stefan

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Stefan,

You might want to consider the SeeedStudio BeagleBone Green Wireless (BBGW) as an alternative to the BBB for your application. http://www.seeedstudio.com/item_detail.html?p_id=2650
The BBGW supports WiFi and Bluetooth (no need to use RJ45 cable).
The BBGW is also compatible with the Grove sensor cape that provides a base platform for a whole host of sensor modules.
http://www.seeedstudio.com/item_detail.html?p_id=2526

I believe that there is a forthcoming combined SeeedStudio IoT kit that includes both the BBGW and the Grove Cape and sensors. It will be available from Digikey.
http://www.seeedstudio.com/wiki/Beagle_Bone_Green_and_Grove_IoT_Starter_Kit_Powered_by_AWS
https://www.digikey.ca/product-search/en?FV=ffecd167

Gord

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Thanks @Gord_Finlay ​, and sorry for the late response!
Do you know how long can be the cables? At the moment I look to the 1-wire interface, there exist temp/humidity/smoke sensors already… but no open door sensor. Do you have some other ideas?

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Stefan,

For the cable length of 1-wire sensor bus networks, there is a good application note from Dallas/Maxim’s web site: https://www.maximintegrated.com/en/app-notes/index.mvp/id/148

Regarding the open door sensor, it really depends on whether you want a light-based sensor for determining if a door is open, or a magnetic reed contact switch (commonly used in home security systems). For magnetic contact switches, look at the Grove magnetic reed switch module - http://wiki.seeedstudio.com/wiki/Grove_-Magnetic_Switch.
There are also analog light sensor modules (http://www.seeedstudio.com/depot/grove-light-sensorp-p-1253.html?cPath=144_148) as well as a digital light sensor module (http://wiki.seeedstudio.com/wiki/Grove-_Digital_Light_Sensor).

Of course, the availability of the BeagleBone Green Wireless which supports Bluetooth Low Energy (rather than the BeagleBone Green which also works with Grove), the use of cable-less wireless sensor configurations becomes possible. The Grove modules really support the wired-network approach for I2C and 1-wire sensors.

Gord