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| == Optic Dispenser ==
| | Moved to: [[Project:BarBot/Components/Optic Dispenser]] |
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| ===General Description===
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| 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.
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| ===Mounting & hardware===
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| Servo is attached to plate which is mounted at the normal to the optic mounting board. Hardware:
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| * 4 x 30mm M3 machine screw
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| * 4 x M3 locknut
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| * self-adhesive cable clip or P-clip w/ small self taping wood screw
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| * string / cable
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| * quick release cable clip (for when we need to change the bottle)? (to be designed!)
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| * High torque servo (see Daniel's purchases on [[BarBot/Purchases and expenditure]] page)
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| ===Logical===
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| *[boot]Sends message: "ready"
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| *Receives message: "dispense".
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| *Uses servo to open value
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| *Pause enough time for pouring of drink
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| *Returns servo to closed value position
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| *Sends message: "done"
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| *Pause long enough to refill optic chamber before accepting second dispense signal
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| *Sends message: "ready"
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| ===Connections===
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| No integral arduino in optic dispenser - is controlled by central Arduino directly.
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| *1 x PWM pin from Arduino
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| *+5VDC from external supply
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| *Common ground (Arduino & external supply)
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| ===Power===
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| Only control from Arduino directly - power comes from external 5V supply which can deliver more current (PC power supply?)
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| ===Bling===
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| LED shining into the optic chamber / bottle would look good.
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| Would require:
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| * Arduino ground
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| * Arduino digital output pin
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