I am making a circuit for a doorbell using a 4017 & 555 chip. Basically I want to have the 4017 sequence run once and stop. It will activate on a momentary button. I have the circuit set up identical to this http://www.instructables.com/id/How-to-make-a-4017-Decade-Counter-Run-for-One-Cycl/
The 4017 outputs are powering LEDs now but will be relays in the future. There are 4 even "notes" pause then 4 more (Westminster chime).
The problem I am having is when the button is pushed, the first two outputs of the 4017 are speeding up. See the video in this link
https://goo.gl/photos/nU2Jn1PKnmwsocMf6 The 1st time the switch is pushed, the 1st two LEDs are lit really fast, then it times correctly for the remaining LED outputs. On the 2nd button push it runs correctly. If I hold the switch in, the sequence times correctly in a loop. The instructibles link above says this way of resetting the 4017 doesnt need switch debouncing. Is this a debouncing issue or something else?
Thanks for the help!!
The 4017 outputs are powering LEDs now but will be relays in the future. There are 4 even "notes" pause then 4 more (Westminster chime).
The problem I am having is when the button is pushed, the first two outputs of the 4017 are speeding up. See the video in this link
https://goo.gl/photos/nU2Jn1PKnmwsocMf6 The 1st time the switch is pushed, the 1st two LEDs are lit really fast, then it times correctly for the remaining LED outputs. On the 2nd button push it runs correctly. If I hold the switch in, the sequence times correctly in a loop. The instructibles link above says this way of resetting the 4017 doesnt need switch debouncing. Is this a debouncing issue or something else?
Thanks for the help!!