In this part, we need to make an acrylic box as the picture below shows, this work is by my workmate Nosk, and he is an intelligent industry designer, you can download the drawings by click here.

https://github.com/Lee-Kevin/19.HomeControlCenterBBGW/tree/master/Drawings

Then we need to cut the the board using laser cutting. I guess you don’t have a laser cutting at home, you can find some in the hacker space near from you easily. If there's no hacker space nearby, you can try the Laser Cutting Service supply by Seeed.

I connect a Grove - Relay to GPIO_51, a Grove – Air quality sensor to A2 port and a Grove – Temperature sensor to A0 port on the Grove Base Cape for Beaglebone Cape.

STEP3: CONNECT TO YOUR BEAGLEBONE GREEN WIRELESS

First, we need to configure your BBGW connect to the internet. It’s very easy to do that by smart phone, you just need to connect to BBGW AP named “BeagleBonexxxx” using mobile phone as the picture below shows.

Then your mobile phone will open the login page automatically. Just select the SSID near you and input the password as shown in the picture below.

At last, The BBGW will show as below and get the local network IP, we can access the Beaglebone Green Wireless using the network IP via SSH. Now, the board is connect to the Internet and next we need to do some software network.

STEP4: SOFTWARE WORK

Since the software code is a little complex, I’ll show you the major technology point in this part, I run a web server on Beaglebone Green Wireless to manage the Grove Modules, view the Grove Sensor Values and using a Grove – Realy to control a table lamp or something else.

Step1：Install Flask

I use a flask web framework for this APP, Flask is a lightweight Python web framework based on Werkzeug, Jinja 2 and good intentions.

You can install it by executing following command.

pip install flask

Step2: Install Flask-Socketio

Flask-SocketIO gives Flask applications access to low latency bi-directional communications between the clients and the server. The client-side application can use any of the SocketIO official clients libraries in Javascript, C , Java and Swift, or any compatible client to establish a permanent connection to the server.

In this project, we need flask-socketio so that the server can update the sensor data to the client as well as the client can tell the server to open or close the Grove – Relay.

Install it by following command.

pip install flask-socketio

Step3: Install Gevent

The flask-socketio package relies on asynchronous services, in this project, I select gevent.

gevent is the framework used in previous releases of this extension. The long-polling transport is fully supported. To add support for WebSocket, the gevent-websocket package must be installed as well. The use of gevent and gevent-websocket is a performant option.

Install it by following command. This step may takes you about 10 minutes

pip install gevent

Step4: Download the code

Now, we have already install the requirements, download the code from github.

git clone https://github.com/Lee-Kevin/19.HomeControlCenterBBGW

Step5: Run the code

Navigate to the project directory 19.HomeControlCenterBBGW/Code and run the demo code

python runserver.py

STEP5: THE RESULT

Open your web browser and input the Beaglebone Green Wireless local IP and the port is 8000, and you’ll see the web page as picture below shows.

This’s the home page, we can see the sensor data and control the Grove – Relay.

Join the Idea contest here and win a FREE beaglebone wireless for yourself !