Difference between revisions of "Wireless Weather Sensors"
From Makers Local 256
m (→Overview: Updated with list of wants and needs) |
m (Funny, I search high and low for alternative tranceivers, only to find the exact same one. A sign maybe?) |
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== Parts == | == Parts == | ||
{| | {| | ||
| − | !Name!!Price for 10 units!!AVR pins required!!Link | + | !Name!!Price for 10 units!!AVR pins required!!Link!!Alt Link |
|- | |- | ||
| RFM22B-S2 Wireless Transceiver | | RFM22B-S2 Wireless Transceiver | ||
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| 4(SPI) | | 4(SPI) | ||
| http://www.sparkfun.com/products/10153 | | http://www.sparkfun.com/products/10153 | ||
| + | | http://www.hoperf.com/rf_fsk/RFM22B.htm | ||
|- | |- | ||
| DHT22 Humidity and Temperature Sensor | | DHT22 Humidity and Temperature Sensor | ||
Revision as of 01:02, 31 January 2011
Overview
Designed to be simple to build, low parts cost, and low maintenance.
Needs:
- Wirelessly transmit temperature and relative humidity to a main unit.
- Run off a single AA, two AA, or a 9v battery
Wants:
- Two pins who's grounded status could be reported (think a door sensor, or something)
- Two pins that could be set to send 3.3v or 5v to run an relay
- Thermostat control?
- Bluetooth?
Status
In progress
Parts
| Name | Price for 10 units | AVR pins required | Link | Alt Link |
|---|---|---|---|---|
| RFM22B-S2 Wireless Transceiver | $10.79 | 4(SPI) | http://www.sparkfun.com/products/10153 | http://www.hoperf.com/rf_fsk/RFM22B.htm |
| DHT22 Humidity and Temperature Sensor | $8.96 | 1 (i think) | http://www.sparkfun.com/products/10167 |
