PIC16F877 Weather Centre
Another Weather Centre, this time using a PIC16F877 and its ready capability of monitoring many types of sensor simultaneously. It was also obvious that this device could easily be used in conjunction with serial memory chips, to perform long-term data recording for subsequent download to a PC-compatible computer for analysis.
Monitors a range of sensors and processes data for the following conditions:
* Barometric pressure, in millibars
* Temperature, in °C and °F, including sub-zero
* Atmospheric relative humidity, as an RH percentage
* Soil moisture, bone-dry to saturated, as a percentage
* Light intensity, as a relative percentage, full sun to total darkness
* Rain fall, immediate (is it raining now?)
* Rain fall, cumulative (by how much has the water barrel filled and over what period?)
* Wind speed, in kph, mph and Beaufort, immediate and averaged
* Wind direction, immediate and averaged, 0° to 360°
* Wind chill factor
* Rainbow alert!
* Recording of all data to non-volatile serial memory (up to 256 kilobytes)
* Selectable data sampling rates, from 1 second to 1 hour intervals
* Serial output (9600 baud) of realtime and recorded data to PC-compatible computer, running under Windows 95/98/ME
* Bargraph and waveform displays on PC
* Data formatted by PC for reading as text file compatible with Excel spreadsheet/ graphing software and text editors
* Immediate display of monitored sensor values via alphanumeric liquid crystal display
FULL Project link:
http://rapidshare.com/files/215461571/017.rar NEW WORKING LINK 30.3.2009
pass: sonsivri