Coilgun Mk. I – Media September 22, 2019 Aidan Brooks This was one of the first tests of the electronics. Development stopped for a long time after this because, as cool as it was, my output estimates had predicted a significantly higher output velocity. Retrospectively, I believe that my main issues were a lack of proper circuits knowledge (from a classroom setting) and an inaccurate prediction due to an incomplete grasp of the physics. The (long) prototype with the coils mounted. The (long) prototype with the electronics (mostly) mounted.