I’ve just deployed a Raspberry Pi into our summer cottage to function as a general purpose home automation and internet access point. This allows visitors to connect to internet via wifi and also enables remote administration, environmental statistics and intrusion alerts.
- Raspberry Pi, 4GB memory card
- PiFace Digital (for motion sensors and heating connection, not yet installed)
- D-Link DWA-127 Wi-Fi USB (works as an access point in our case)
- Huawei 3G USB dongle (from Sonera, idVendor: 0x12d1 and idProduct: 0x1436) with a small external antenna.
- Two USB hubs, one passive and another active with 2A power supply
- Old TFT display, HDMI cable and keyboard
I’m not going into the details how to configure this, but I’ll give a quick summary:
- Sakis3G script to connect the 3G to Internet. Works flawlessly.
- umtskeeper script which makes sure that sakis3g works always. Can reset USB bus etc. Run from /etc/rc.local on startup.
- hostapd to make the D-Link WiFi to act as an access point.
In addition I run OpenVPN to connect the network into the rest of my private network, so I can always access the rpi remotely from anywhere. This also allows remote monitoring via Zabbix.
Plans for future usage:
- Connect to the building heating system for remote administration and monitoring.
- Attach USB webcams to work as CCTV
- Attach motion sensors for security alarm. Also record images when sensors spot motion and upload directly to internet.
- Attach a big battery so that the system will be operational during an extended power outage.
3 thoughts on “Raspberry Pi as a 3G to WiFi access point and home automation”
Care to share which version of hostapd – if different from what comes with current Raspbian – and driver for DWA-127 you have been using?
Have tried to switch my EDUP Wifi-USB to that D-link without any success so far…
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