LED blink and off

Community Projects
1

Hi guys,

I have a current project which requires me to light up 7 LEDs in series using a on/off switch, blink for 5 secs (timing can be more) at the same time and turn off.

Is there any available circuit similar to this application? It has to be mobile as well, I’m thinking of powering the circuit with a typical 9V battery. Not sure if it is enough.

Any idea?

2

Can be done with digital logic, but it’s a lot of work. OTOH, it’s trivial with just about the smallest of Arduinos.