The Automatic Keg Tap
Not Good
Our Design
The Pump: Reciprocating Arm Motor
The difficulties of recreating a hand
1 st Hand Prototype
Serious Issues
2 nd Hand Prototype
3 rd Hand Prototype
Adding Circuitry 1: Driving the Motor Max Output Voltage : 5V Desired Input Voltage : 12V
Solution: Transistor Switch 5V 12V
Pressure Sensor (14.5 psi) Adding Circuitry 2: Turning Pump on and Off
Problem 1: Sensor decided to stop working
Problem 2: Found new one, but…
Solution (Unfortunately): Timer and Flip Switch
Circuitry
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
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