BarBot/Components/Optic Dispenser

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