Let me say up front this is not a hard sci-fi book, it's character and story driven. So I just need some plausible answers.
I'm trying to restrict characters to using basic weaponry and technology. One way is having a desert planet torn by continual dust and sand storms. Visibility is often low and aiming a projectile weapon would be difficult. Basically wind is almost always blowing. Because of that, the natives never really made projectile weapons. They stuck to things like spears/pikes, even putting charges into them like cattle prods. And of course knives and such.
But if I came from Earth, would this be enough to deter me from say using a regular gun? (Let's assume lasers/plasma guns are not around yet).
Would the constant blowing sand and dust build up static electricity, and if so, would it be enough to mess with your tech? Such as communications, whether radio, wireless or satellite.
I've read a couple posts on magnetic fields, and they quickly got very scientific. I was thinking of adding a strong magnetic field to also make technology act weird. Could it be strong enough to do that, but not so strong that it would actually pull metal items around?
Any other ideas on making modern tech be unreliable would be great. Again, doesn't have to be overly scientific.
This is supposed to be a colony planet where people have settled to farm a valuable local resource.