If the gadget isn't working, check if it requires FE (Forge Energy) or a similar power source. You may need a Battery or Power Cell to charge it.
Determine if the gadget can be "tricked" into a state it wasn't designed for (e.g., skipping a security check). 18_its_just_a_gadget
If you are referring to the popular "Building Gadgets" mod (often part of larger quest packs), this topic usually covers the automation of complex structures. If the gadget isn't working, check if it
Safely deletes large areas of blocks. Note that it does not drop the items; they are simply voided. If the gadget isn't working