I am trying to make a simple anemometer and I can't get the circuit to work. I am not able to get a variable voltage output from lm2917 to feed into lm3914. Quick overview I am using a hall sensor to generate pulses to feed into lm555 to get square waves close to 50% duty cycle then into 2917 to output a max voltage of 10 volts to feed to lm3914 . I am using 8-2700mah AA batteries as source voltage. 60 hz is max frequency I am woking with from hall sensor. Any help will be greatly appreciated .
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