Why is my 555 timer keyboard starting with noise? Answered
Hi!!! :/) I have made a 555 timer keyboard using a tactile button series with resistors, but rather than staying silent until I press a button, it makes noise as soon as I start it. All the buttons function properly, raising the note in intervals but it starts with sound. I have thoroughly searched my button/resistor series for accidental bridges between joints but have found none. This is my first "real" soldering/perfboard projects, so mistakes could have been made! Could there be any other reason for this noise? I cannot find somewhere else where the circuit may be completing. I have included the schematic I am using.
Any help would be appreciated ]:>)