I am not an EE, but I've done a missing-pluse detector both with a 555 and with an 8-bit micro. Both solutions were great. I sure as heck wouldn't use an Rpi

I am not an EE, but I've done a missing-pluse detector both with a 555 and with an 8-bit micro. Both solutions were great. I sure as heck wouldn't use an Rpi for it though.