VACS:Projects:Software:Ebcs
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Documentation on the chips used by EBCS Power board. | Documentation on the chips used by EBCS Power board. |
Revision as of 22:21, 1 June 2006
Project | Embedded Bathroom Control System |
Date | 2001 - 2004 |
Goals | Control the fan, light, radio in a bathroom based on presence, temperature and humidity |
Dependencies | GNU 68HC1x |
Contents |
Overview
The Embedded Bathroom Control System is a small system based on a 68HC11 and designed to:
- Control the bathroom fan,
- Control the light,
- Control the radio (ie, music),
- Display the temperature, humidity, ...
This system has several hardware components:
- A 68hc11 board with 32Kb of ROM and 32Kb of RAM. This board runs the EBCS software.
- An LCD board which provides a 2x16 LCD display with 4 buttons.
- A Power Control board which has a transformer and 2 triacs (one for fan and one for light).
- A Sensor module which provides temperature, humidity and presence detection.
- A I/O board connected to the CPU board. This is the interface with the sensors, the power control board and the LCD panel.
EBCS Components
IO Board
Power Supply and Triacs Board
The power control board:
Documentation on the chips used by EBCS Power board.
Documentation (1) | |
---|---|
Triacs (I've used a BT137-600). | |
6-Pin DIP Zero-Cross Optoisolators Triac Driver Output | |
NPN Silicon Transistor | |
Transformer (http://www.myrra.fr: Myrra ). | |
Optocoupler with Phototransistor Output |
(1) Documentation publicly available on various constructor web sites and copied here for archiving.
LCD Board
68HC11 Board
EBCS Simulator
Resources
- http://gel.sourceforge.net: GEL main site