Tänkte bygga en enkel vindmätare.

Motor diameter : 24.5mm/0.96"
Motor height : 34.2mm/1.35"
Motor shaft diameter : 2mm/0.079"
Motor shaft length : 13.5mm/0.53"
Blade diameter : 100mm/3.94"(after assembling)
Blade Aperture : 1.95mm/0.077"
Output voltage : DC 0.01v - 5.5v
Output current : 0.01 - 100mA
Rated speed : 100 - 6000 rev/min

Chip: KA2284;
Supply voltage: 3.5V-12V;
The magnitude of the level can be adjusted;
AC and DC signals can be controlled by jumper;
PCB board size: 29 (mm) x21 (mm);