Difference between revisions of "Programmable Thermostat Project"
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A programmable thermostat is required to keep costs down while keeping everyone as happy as possible with the temperature of the shop. | A programmable thermostat is required to keep costs down while keeping everyone as happy as possible with the temperature of the shop. | ||
| − | ==Requirements== | + | ==Hardware Requirements== |
The programmable thermostat should: | The programmable thermostat should: | ||
* Be remote controllable (all features) | * Be remote controllable (all features) | ||
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** USB temperature sensor? | ** USB temperature sensor? | ||
** Built-in temp sensor? | ** Built-in temp sensor? | ||
| − | * | + | ** [[Wireless Weather Sensors]] |
| + | ==Software Requirements== | ||
** Occupied hot target with hot-side hysteresis | ** Occupied hot target with hot-side hysteresis | ||
** Unoccupied hot target with hot-side hysteresis | ** Unoccupied hot target with hot-side hysteresis | ||
Revision as of 16:34, 26 January 2011
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Creator: |
Overview
A programmable thermostat is required to keep costs down while keeping everyone as happy as possible with the temperature of the shop.
Hardware Requirements
The programmable thermostat should:
- Be remote controllable (all features)
- Wifi, indirect network connection such as serial to a laptop, xbee
- Be able to control a heating device via 120V relay
- 1 GPIO
- Be able to control a cooling device via 120V relay
- 1 GPIO
- Be able to control a heating or cooling device by remote means
- Currently, X10 and X10 via network proxy are options
- Have a user interface for people to interact with at the physical location
- LCD with buttons
- Be able to monitor temperature accurately in one or more locations
- DS18B20+ temp sensors
- USB temperature sensor?
- Built-in temp sensor?
- Wireless Weather Sensors
Software Requirements
- Occupied hot target with hot-side hysteresis
- Unoccupied hot target with hot-side hysteresis
- Occupied cold target with cold-side hysteresis
- Unoccupied cold target with cold-side hysteresis
- Transition from occupied to unoccupied state after a timeout and audible alarm
- Local or remote user can silence alarm and reset timeout
