Weather Vane

[otm]

ahh thats great, Thank you very much, my knowledge has increased greatly over the last few days.

All I need to do is work on a way (with perhaps my physics teacher) to create a test that would give a range of values that I can then graph, and find out exactly how windspeed is related to the output voltage, and then I can create from that an equation that turns the input voltage into a speed in mph (and display it) and the convert that to display a speed in knots (and display that too)... I will proberbly then have to do the same with a thermistor, and humidity sensor. the wind vane (Which ever one I deicide to use: pot/encoded shaft with phototransistors) will just be x voltage = north etc..

Cheers,

Owen

 

[ericgibbs]

hi Owen,
The VB5 MCP3204 program, modified for QBasic, runs OK in the PC using Win96SE.

All 4 channels give good results.

The current display using QBasic, of the 4 channels, is in text format as a Voltage.

Let me know the details of the various sensors you are going to use and I will modify the scaling of the four channels.

 

[DALEE]

sence the RATE of change in wind direction

this is an after though about the optical interuptor used for wind direction or wind speed also the photo transistor found in a mouse is actualy two detectors in one , one on top of the other. by comparing the output pulses you can deteterimine the direction its is turning , cw or ccw, rate of change or speed, and its position.
Direction by - which pulse comes first
Rate of turn - how fast the pulses come say pulse /sec
position - count pulses cw or ccw usinf a360 degree spoked wheel. i think this is called an encoder. not sure

just an after thought

 

[ericgibbs]

this is an after though about the optical interuptor used for wind direction or wind speed also the photo transistor found in a mouse is actualy two detectors in one , one on top of the other. by comparing the output pulses you can deteterimine the direction its is turning , cw or ccw, rate of change or speed, and its position.
Direction by - which pulse comes first
Rate of turn - how fast the pulses come say pulse /sec
position - count pulses cw or ccw usinf a360 degree spoked wheel. i think this is called an encoder. not sure

just an after thought

hi dalee,
This project hasnt been abandoned, 'otm' and I are working together 'offline'
I'm sure he will read your post.

 

[otm]

DALEE,

Thank You for your response, however, Like Eric said the project is now being developed by him and myslef along with teachers etc..

Thank You anyway.

Owen