Melinda Metz 
Tech Team and the Droid of Doom [PDF ebook] 

The Tech Team has a new member. A highly advanced android named Dude. But not everyone is happy to have the robot at school. Someone is deliberately damaging him during the night! Usually, Zoe, Jaden and Caleb would easily crack the case with their amazing teamwork and critical-thinking skills, but there’s a problem. Caleb doesn’t trust the droid. He’s sure that Dude is up to no good and that artificial intelligence will lead to DOOM and a robo-takeover. Will the three friends be able to work together to solve this mechanical mystery?