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# create voltage divider for use with MCP3008 ADC
def volt_div(r1, r2, vIn):
vOut = (vIn * r2)/(r1 + r2)
return round(vOut,3)
# calculate vOut values for each wind direction using known resistances from datasheet, 3.3 V from RPi and 4.7K ohm resistor
resistances = [33000, 6570, 8200, 891, 1000, 688, 2200, 1410, 390, 3140, 16000, 14120, 120000, 42120, 64900, 21880]
for i in range(len(resistances)):
print(resistances[i],volt_div(5000, resistances[i], 3.3))
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