Automated test rig for electronic products

Abstract: Testing to ensure the function of PCB:s is a key process that ismandatory for factory constructed boards. Given a large number oftest object shows that manual processing is inefficient. Byautomating the process companies will have the possibility to dothis process more efficient, but how can the process be automatedfor a flexible flow and different PCB designs?This report describes the work done when designing a prototype unit that is part of an automated PCB-test line. The prototype has the task to sort PCB-cards, approved or non-approved, after thetest has been completed. The system consist of an elevated slider with a trolley whose position is controlled by a stepper motor and timing belt. On thetrolley a construction with a linear actuator and robot gripper is placed. The trolley moves to a position were the PCB is picked up,the signal from a terminal informs the system whether the test isok or not. The card is then placed in a rack. The status of the rack is controlled by a distance measurement, which gives the distance to nearest empty slot. Two Arduinos are used as controllers. The system was tested in two parts, first each component andprogram by itself and later the assemble. The result was a prototype that worked but had room for improvement with some parts in need of replacement. Future work would include error signal management, stabilizing the construction and increasing theflexibility.