Question: What should the Electronics Design Teams present for their Design Team Concept when our job of interfacing depends on what the other Teams are developing. Same question pertains to our Feasibility Studies. Answer: The various teams will be coming to your group with the power requirements for a motor and very soon I hope. You team will then select that motor (so you are sure you can interface to it) then relay that motor back to the other team. I suggest you decide now what type of motors you are going to use, brushed DC motors, brushless DC motors or stepper motors. Then you can present a team concept for for the control of that type of motor. You are likely going to go with brushed DC motors so you will need an H-bridge. You probably have an estimate of the current flow and you may not find an H-bridge rated that high. So, you may need a concept for an H-bridge (although I hope not). You can also present team concepts for things such as voltage dividers and multipliers, because you will need them. I agree that you do not know as yet whether groups will be using certain sensors (like a contact switch) or drivers (like a solenoid) but you can address electronic concepts related to control of motors and servos. Your feasibillity studies would be an indeal place to select the motors and servos. There are design variables (the various motors at your disposal). There are state variables (the motor's power, stall torque, nominal speed and voltage requirements) and cost. There is a measure of merit (motor weight, size and cost). Another trade study may involve selection of a high current H-bridge (one that uses mosfets). Another trade study may involve battery selection.