Electromagnetic Pulse weapons, or EMPs, are extremely effective against anything that requires electricity to function. They aren’t so easy to make, though, and require a good understanding of electrical engineering to actually create one.
There are lots of videos on Youtube about how to make an EMP gun or device. While most of them aren’t technically EMPs, they do cause some electronic damage to whatever is in the vicinity of the device and are worth checking out if fighting against robot overlords is on your agenda.
