I have a device which outputs pulses at 5V. I want to detect these pulses with my Raspberry Pi later. The problem is that my Raspberry Pi script will be doing other things that take time, and I'm worried that it will not be able to pick up on the pulses (it will not check the state of the GPIO pin when the pulses occur).
Is there some way to take 5V pulses and not only turn them into a solid logical on, but also extend the length? My dream would be that whenever the pulses happened, I could have a 3.3V signal be on for a minute or so.