1. General Rule: Don’t reinvent the wheel. Use your time wisely. If something already exists that will serve your purpose, then it is probably a good idea to purchase that item to incorporate into your design. Determine what you need, find several items that might work, look at the specifications for the items, and make a choice on which one will work best.

2. Gearmotor for Translation motion http://www.mpja.com/

3. Gearmotor – Right Angle Shaft http://www.mpja.com/convenient mounting bracket with holes

4. Gearmotor with Rotating Arm http://www.mpja.com/

5. Micro Gearmotor you may need to fabricate or purchase a bracket http://www.mpja.com/

6. Homemade Lead Screw

7. Servo Valve

8. Standard Servo with Linkage