Wireless home automation with EnOcean

EnOceanLogoA year ago I installed a wireless switch in the kitchen to switch on the kitchen spots. I chose the Easyclick system by PEHA which works without batteries and it performs very well. This Easyclick system uses the EnOcean energy harvesting wireless technology. Based on this experience and my recent interest in home automation systems I came across a sensor kit for EnOcean on a blog post at Element14. To use the sensors a controller which can send and receive EnOcean (Funk) messages is needed. So I bought a Raspberry Pi with the EnOcean Pi (TCM 310 GatewayController) GPIO module. The Raspberry Pi and EnOcean Pi came first, so once all was setup I switched on the kitchen light switch and there it was the automatic registration in the controller software FHEM.

EnOcean setup

The sensor kit contains a temperature, rocker switch and contact switch. All are working as expected as you can see on the screen shot below.

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Improve wireless security on the 877W

cisco-877w-frontI just discovered my three year old Cisco wireless router was configured to do WPA encryption instead of the more secure WPA2 version, which is the standard nowadays. WPA uses TKIP (Temporal Key Integrity Protocol) while WPA2 is capable of using TKIP or the more advanced AES algorithm. Doing a search on Google it appears it’s just a IOS configuration option.

Change:

interface Dot11Radio0
no ip address
!
encryption vlan 2 mode ciphers tkip
!

To:

interface Dot11Radio0
no ip address
!
encryption vlan 2 mode ciphers aes-ccm
!

If the option is not there, your IOS version does not support it. I’m currently using: C870 Software, Version 12.4(24)T1 (c870-advipservicesk9-mz.124-24.T1.bin).