HELP finding a switching solution please

[sonolink]

Hi guys,

I bought a couple of boards that playback some prerecorded audio. Basically it has 8 pins that when grounded will trigger an mp3.
This is the board I got:

https://es.aliexpress.com/item/3305...jNDff0FbTC2Ap__bylfE3AbAKSqPqOOBoCae4QAvD_BwE

My question is: is there a way to use a momentary footswitch to trigger sequentially each pin? The idea is to use it in a guitar pedal that would allow the player to trigger prerecorded sounds through his amp. Since 8 separate footswitches make quite a big pedal I was wondering if a switch single switch could be used to trigger the pins in sequence?

Thanks in advance for any ideas and suggestions
Cheers
Sono

 

[gyraf]

..a three bit counter with reset, then a one-of-eight decoder?

Look at cmos 4000-series standard chips

 

[sonolink]

..a three bit counter with reset, then a one-of-eight decoder?

Look at cmos 4000-series standard chips

Thanks for the reply Gyraf. TBH I've never dealt with CMOS so I guess I'll have to dig into logic

I hope I can find some ready made boards.

Thanks!
Cheers
Sono

 

[merlin]

CD4017 decade counter -a footswitch can clock the outputs one at a time through (up to) ten options. You can buy LED chaser PCBs that could probably be hacked fairly easily to do what you need. Instead of driving LEDs you would drive transistors, which would pull down the inputs of your mp3 device.

 

[sonolink]

CD4017 decade counter -a footswitch can clock the outputs one at a time through (up to) ten options. You can buy LED chaser PCBs that could probably be hacked fairly easily to do what you need. Instead of driving LEDs you would drive transistors, which would pull down the inputs of your mp3 device.

Thanks a lot for the idea Merlin!!