I want to build a function generator by using 555 timer for signal generator and it capable of outputting a square wave with adjustable frequency in the ranges of 1Hz to 100Hz..
If anyone have an idea please let me know...thanks for your cooperation..
You will not get a symmetric square wave with only the 555 (50% duty cycle) and a variable output frequency will change the duty cycle also. Try another IC like XR2206.