[Source] Trade Federation cannons were double-barreled repeating blasters used by the Trade Federation in the year 32 BBY during the Invasion of Naboo. They were mounted on tri-pods, and have a small targeting computer on top. They have a long-range and possess strong firepower. They were placed throughout the city of Theed on Naboo. On multiple occasions during the invasion, cannons were taken over by the Jedi Obi-Wan Kenobi and turned against the Trade Federation B1 battle droid army.