1. The Automatic Keg Tap

8. Not Good

9. Our Design

10. The Pump: Reciprocating Arm Motor

11. The difficulties of recreating a hand

12. 1 st Hand Prototype

14. Serious Issues

15. 2 nd Hand Prototype

17. 3 rd Hand Prototype

19. Adding Circuitry 1: Driving the Motor Max Output Voltage : 5V Desired Input Voltage : 12V

20. Solution: Transistor Switch 5V 12V

21. Pressure Sensor (14.5 psi) Adding Circuitry 2: Turning Pump on and Off

22. Problem 1: Sensor decided to stop working

23. Problem 2: Found new one, but…

24. Solution (Unfortunately): Timer and Flip Switch

25. Circuitry

27. The Bad Does not sense pressure Does not sense pressure Not very portable Not very portable Difficult to attach Difficult to attach A bit shaky A bit shaky Some noise Some noise Loose nuts and bolts Loose nuts and bolts

28. The Good: Automatic Automatic – Minimal Effort (flip a switch) Can attach to any keg tap Can attach to any keg tap – No cutting or invasive maneuvers required Way quieter Way quieter Cheaper Cheaper Good flow Good flow