| ??? 05/05/05 13:03 Read: times |
#92990 - Multi controller approach. Responding to: ???'s previous message |
Dear Geert,
Regarding the I2c, definitely not! That's why I concentrate everyting as close as possible around the uC. One exception: seen the large amount of wires, I have to have two boxes for the domotics electronics. One downstairs and one upstairs. I2c will be connected between the two, by means of an I2c buffer, so that I can compete with 'long' distances. Why use only two boxes connected using I2C. I would never take I2C out of my boxes. In your situation I would have used multiple boxes probably one in every room. Every box having its owns microcontroller and controlling the various appliances + your infra red stuff. For integrating these multiple self sufficient boxes I would connect them through RS485 link for inter box communication. If it is really required to have a central control for some specific application I would make one of the boxes bigger with additional features such as LCD + Keypad etc. So that monitoring status of other boxes or sending some signal / command to other boxes or some other operation with other boxes could be done. Regards, Prahlad Purohit |
