Hardware design

This page illustrates the hardware design of the robot.

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Romeo BLE

It is the core component of the robot platform.

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Schematic:

Specifications:

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Power Supply

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Battery

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Specifications:

• 7.4 V 2-cell Pack
• 2200 mAh of charge
• 1 °C continuous discharge rate (5 °C Max)
  • 1C : 2,2 A for 2,2 hours
  • 5C : 11 A for 30 minutes

Battery Charger

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DC-DC Converter

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Specifications:

Power consumption

Nb	Component	Voltage (V)	Nominal (mA)	Total (mA)	Pik (mA)
1	Arduino [1]	5V	25 mA	25 mA	NA
1	Motor Shield [1]	5V	35 mA	35 mA	NA
2	Motors	6V	1000 mA	2000 mA	2800 mA
3	Sharp Sensors	5V	30 mA	120 mA	NA
5	QTI Line Sensors	5V	50 mA	250 mA	NA
1	LCD Display	2.7 - 5.5V	0.6 mA	1 mA

• | - | - | Total: | 2431 mA | -

[1] Included in the Romeo BLE board.

Theoretical battery autonomy: ~2 hours TODO: Add measured battery autonomy

Motors & Encoders

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Wiring diagram:

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Sensors

QTI Line Sensors

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Wiring diagram:

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Sharp distance sensors

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Wiring diagram:

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Part list

• Battery : DFRobot SKU:FIT0137 (link) - discontinued

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