The Camarader-E perk has five levels and each circuit board you collect towards the completion of the ED-Ecated quest gives ED-E a bonus upgrade. There are a total of 5 eyebot upgrade circuit boards in broken eyebots found throughout the divide. Each rank of this perk has a different effect;
The Divide - Just Southeast of the entrance to the Cave of the Abaddon there should be a nuke to blow up. Once it's destroyed go to the blast site (past the blue old world flag) to find a sparking eyebot.
Municipal Sewers - Accessed from the Third Street Municipal Building via sewer style entrance. On the left as you enter.