Please help me, small LED display counter

[MrKemp]

Hi everyone i am new to this forum and to electronics, i have a small understanding of electronics but not a great deal especially the programing side of things. Basically i would like to build a LED Display counter circuit that can count up to 15, that works with a two way flick switch so when i flick it one way it adds up and when i flick it down it takes away from the display - for example if i flick the switch up it change the display from 0 to 1 and so forth. What would i need to do to build this circuit.

 

[vne147]

What you would need first is a switch (a DPDT) in an ON - OFF- ON configuration. You would then feed one pole of your switch into the clock pulse pin of a 4510 IC. The second pole of the switch would feen into the UP/DN pin of the 4510. You'll need to debounce the switch inputs into the 4510. The 4510 would then feed into one 4511 which would drive a single 7 segment LED display. For numbers greater than 9, you can cascase 2 or more 4511's to drive additional 7 segment displays. I thought **broken link removed** page had pretty good tutorials on how to do this. Please study the information there and come back when you have more questions.

 

[cne]

You could use the 40110 IC. It can count up/down and drive a display in one chip.
In the circuit, just omit IC's 3 and 4 to give you two digits (up to 99).
UP DOWN counter circuit
https://www.circuitstoday.com/wp-content/uploads/2009/07/up-down-counter-circuit.jpg

 

[vne147]

You could use the 40110 IC. It can count up/down and drive a display in one chip.
In the circuit, just omit IC's 3 and 4 to give you two digits (up to 99).
UP DOWN counter circuit
https://www.circuitstoday.com/wp-content/uploads/2009/07/up-down-counter-circuit.jpg

cne,

Didn't know about this IC. Good suggestion.

MrKemp,

There's more than one way to skin a cat and cne's suggestion might be the better way to go. So for today at least cne > vne. Mwah ha ha ha (evil laugh in case you couldn't tell). But seriosuly, it seems simpler than my suggestion anyway. The only real advantage I can see for going with my idea would be that you'll learn how to use 2 different ICs as opposed to 1. The 4510 can be used for other things aside from counting just to display a digit. It also wouldn't be a bad idea for you to do both for educational benifit. Maybe you could make one circuit for use with a switch and then make another circuit to count on its own using an astable multivibrator as the clock input.

Good luck. Feel free to come back if you have questions.