I am trying to find a flashing LED kit, ideally just one LED in clear/white that will turn itself on for exactly 15 seconds and then turn itself off for two minutes continue in that cycle, on 15 seconds, off 2 minutes, etc.
It is for a one-off specific project that is a bit of fun so I am not looking to do something complex with a Raspberry Pi or anything like that.
I found this: https://www.rapidonline.com/Design-Tech ... GwodPq4NPw
But it has two LEDs and won't allow control over duration, as far as I can see.
I wondered if anyone here had seen anything like this or had any ideas if this could be adapted to achieve what I am trying to do?
Thank you in advance for any help.