Once you're ready, head to the General Atomics Factory. Enter the building and start clearing the place. Don't forget to salvage the parts left behind by the destroyed robots since some of the parts that they drop can unlock new mods to your Robot Workbench.
Make your way to the second floor's storage room. Operate the terminal there to open the security doors and defeat the robots inside. Loot the Mechanist Device from the robo-brain then talk to Ada.
She'll suggest to have the Radar Beacon to be installed on her and you'll have to use a workbench to do that. Head back to the settlement where you constructed the workbench and use it to install the beacon on Ada. You can find the Radar Beacon option under “Special”. Once installed, talk to Ada to learn more about your next objective. The quest will be completed afterward.