writing the code to send the pulse and interval, is straight forward enough (delay/digitalWrite,delay or led blink without delay, lot's of options...)...
but, has anyone seen any code to measure frequency? i'll adapt it if so 
thanks...
writing the code to send the pulse and interval, is straight forward enough (delay/digitalWrite,delay or led blink without delay, lot's of options...)...
but, has anyone seen any code to measure frequency? i'll adapt it if so thanks...