Project Notes

This is an attempt to show wind direction and speed from the scratch package.


No attempt has been made to calibrate resistance inputs for proper direction and speed display.


resistance A effects how many barbs show. Thus displaying the wind speed. Resistance is assumed to be knots. So that the wind barbs show 5 knots for half barbs, 10 knots each for full barbs, and 50 knots for filled triangle.


restistance B effects the direction from which the wind is blowing. the resistance value 0 - 100 is assumed to span 360 degrees. So the barb pivots 360/100 for each change in direction.


resistance C is connected to a resistance sensor inversely related to temp. 0 = 120 F, 100 = -40 F.