CoYoHo - Control Your Home - Home Automation System

CoYoHo is my attempt to build a wireless home automation system which is fully open source and open hardware. That means everything is available under open source/hardware licenses and you can download, use and modify all of the hardware designs (schematics and PCBs), the device firmware source code as well as the server and client source code.

CoYoHo is a home automation system, so its main features are:

- Communication with distributed remote devices

- Getting input from remote sensors

- Control remote actuators

- Server for configuration and management

- Automated device control via scripts

- Web administration

- Mobile client administration

CoYoHo is currently in an early alpha stage. Since i have no *real* use for a home automation system (since i don't own a house ;-)), i only built some devices to suit my actual needs (switching lights and electronic equipment) and evaluate things that interest me (developing a Ruby server, developing an Android client). So don't expect anything industrial grade at the moment.

Finished devices:

- Box with 8 switchable power outlets (220V)

- Box with a dimmer (200V, put between power outlet and lamp)

- Remote control (battery powered, 10 push buttons, 3 LEDs)

- Reworked Ikea Spoeka night lamp (RGB LED light)

- WLAN camera (pan and tilt controlled by two servos)

- Linux server running on a Panda board

Soon to be finished:

- Basic server software for system management and control

- Voice recognition device based on an EasyVR module (acts a s a voice triggered remote control)

- Client software for Android devices (imagine a wall mounted Android tablet for controlling your home automation system)

Planned:

- Wall switch (flush mount, switch and button combination)

- Wall dimmer (flush mount, Rotary knob and dimmer combination)

Currently the following technologies are used:

- Wireless communication with the remote devices via XBee modules

- ATmega controllers are used in the devices, the firmware is written in C++ using the Arduino framework and developed with the Eclipse IDE

- Server software is written in Ruby (JRuby) using the Vaadin web application framework and running as a Jetty web application on Linux

- Mobile client for Android devices, implemented as homescreen widgets

By the very nature of this project, CoYoHo will never be finished. You can always imagine new sensors and actuators to build, think of enhancements to the server software or create a client for a new mobile device.

Since CoYoHo is only one of my many interest, this project is progressing steady but slowly. So help of other developers is highly welcome.

CoYoHo project web site:

http://www.grappendorf.net/projects/coyoho

CoYoHo git repository:

https://github.com/grappendorf/coyoho

Project Elements

coyoho-overview-0.png (PNG, 409.17 KB)

Discussie (3 opmerking(en))

DynamoDave 11 jaar geleden

We live in part of a large house, with tenants on one side and us on the other. We recently fitted a Salus RT500RF on our side to control the radiators (the boiler is on the tenant's side).

To disable this control in the Summer or reboot it, I also fitted EasySwitch FM switches for this. They turn devices off and on from an unused light switch on our side.

Sometimes the Salus does not poll the controller when the heating should go down at night (from 20 to 5 deg C). If I suspect this, I can force it to poll by pumping the heat up to say 25 and wait for the poll symbol to appear, then immediately start pumping it down to 5 and wait for the polling symbol. This should ensure that it works.

If the EasySwitch devices are 'on' and the power goes off, then they will need resetting (off and on at the switch).

Sometimes I think some mobile phones can affect them.

But I have replaced the batteries that power the EasySwitch switches on our side, the transducers on the other side are mains-powered.

So the only thing that happens about once a year, the transformer plugged into the mains, oxidises and shuts down as there is not enough current to keep the contacts clean. Which means un- and re- plugging the transformer.

This can be avoided by having a desktop transformer wired directly into a junction box, say.

img-20130308-00278.jpg (295kb)
img-20130308-00279.jpg (288kb)

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grappendorf.net 11 jaar geleden

On my website you can now download the Eagle PCB files for the adapter board with which you can connect a XBee module to a PandaBoard. It's a voltage regulator / level converter, and needed because the XBee modules work with 3.3V whereas the PandaBoard uses 1.8V (and supplies 5V).

https://sites.google.com/site/grappendorfnet/projects/coyoho/coyoho-server-hardware

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ClemensValens 11 jaar geleden

Hi Dirk,

I had a look at this project which seems realy interesting. You say it is open source and open hardware, but to my surprise you don't say a lot about the server. The source code repository from github does not contain schematics for the server, only the peripherals have Eagle files. Can you please expand a bit on the server?

Regards,

Clemens

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ClemensValens 12 jaar geleden

Hi Dirk, The Panda board/Ubuntu part was clear to me, but not the part: "The only hardware I've added to the Panda board is a simple adapter board which contains a XBee module, a voltage regulator and a level converter. The XBee module is connected to some internal pin headers of the Panda board and can then be accessed through a serial port." some internal pin headers? I suppose your server software knows where it is, but if I want to build a server, how do I know where to connect it to? A circuit diagram would be handy, don't you think so? Regards, Clemens

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grappendorf.net 12 jaar geleden

Hello Clemens, thanks for your comment and your interest. The server is an already existing open hardware project ;-) It's a Panda board (http://pandaboard.org/) running Ubuntu Linux. Maybe the Panda board is a little bit of overkill for this project, but i had one laying around and the nice thing about it, is that it's already equipped with a WLAN module. But everything that runs Linux, has network connectivity, a serial port and enough performance to run a Java-VM based web application can also be used. The server software can also run on a normal desktop computer. The only hardware I've added to the Panda board is a simple adapter board which contains a XBee module, a voltage regulator and a level converter. The XBee module is connected to some internal pin headers of the Panda board and can then be accessed through a serial port. So the server is mainly a software project. And by it's very nature it is what makes most of the work. It is also a little bit unusual, because it is written in the Ruby programming language (JRuby on a Java-VM to be precise) but instead of Ruby-on-Rails it uses Vaadin, a GUI framework with which you can built web applications that look and feel mostly like normal desktop applications. Currently i can control my devices, but the device configuration lacks most of the needed features. A little bit of an Android software is also working, so i can control some devices through a wall mounted Android tablet. Documentation is always missing but writing something more about the server software and it's installation is high on my todo list. I will post comments here, whenever i have something essentially finished. Regards, Dirk

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