Fair enough. The Tech Savant has a number of other abilities that make them quite attractive as a character class option. I would not worry too much about the robot aspect of things. As for the base statistics for the robots themselves, try using these:
Tiny Robot: CR 1/4; Tiny construct; HD 1/2 d10; hp 5; Mas —; Init +2; Spd 20 ft. (treads), 30 ft. (bipedal), 40 ft. (quadrupedal), or 50 ft. (wheels); DV 13, touch 13, flat-footed 12 (+2 size, +1 Dex); BAB +0; Grap –10; Atk +0 melee; Full Atk +0 melee or +3 ranged; FS 2 1/2 ft. by 2 1/2 ft.; Reach 0 ft.; SQ construct; AL none; SV Fort +0, Ref +1, Will +0; AP 0; Rep +0; Str 6, Dex 12, Con —, Int —, Wis 10, Cha 10.
Skills: None (unless programmed by a Tech Savant).
Feats: None.
A diminutive robot has all of the same statistics as listed above, but only has a Strength 3, 1/4 HD, and 2 hit points.
There. Happy now?
-August