the automatic keg tap
Post on 22-Feb-2016
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The Automatic Keg Tap
Not Good
Our Design
The Pump: Reciprocating Arm Motor
The difficulties of recreating a hand
1st Hand Prototype
Serious Issues
2nd Hand Prototype
3rd 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• Not very portable• Difficult to attach• A bit shaky• Some noise• Loose nuts and bolts
The Good:
• Automatic– Minimal Effort (flip a switch)
• Can attach to any keg tap– No cutting or invasive maneuvers required
• Way quieter• Cheaper• Good flow
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