BarBot/Components/Optic Dispenser

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Optic Dispenser

General Description

The optic dispenser pours a unit of alcohol (i.e. 25 ml) for each dispensing operation. Commercial optic measures are use for this, driven by a servo.

Mounting & hardware

Servo is attached to plate which is mounted at the normal to the optic mounting board. Hardware:

4 x 30mm M3 machine screw
4 x M3 locknut
self-adhesive cable clip or P-clip w/ small self taping wood screw
string / cable
quick release cable clip (for when we need to change the bottle)? (to be designed!)
High torque servo (see Daniel's purchases on Project:BarBot/Purchases and expenditure page)

Logical

[boot]Sends message: "ready <dispenser-id>"
Receives message: "dispense".
Uses servo to open value
Pause enough time for pouring of drink
Returns servo to closed value position
Sends message: "done <dispenser-id>"
Pause long enough to refill optic chamber before accepting second dispense signal
Sends message: "ready <dispenser-id>"

Connections

No integral arduino in optic dispenser - is controlled by central Arduino directly.

1 x PWM pin from Arduino
+5VDC from external supply
Common ground (Arduino & external supply)

Power

Only control from Arduino directly - power comes from external 5V supply which can deliver more current (PC power supply?)

Bling

LED shining into the optic chamber / bottle would look good.

Would require:

Arduino ground
Arduino digital output pin