E2 - SCOOTER.

LDI - Product and System Design II

Aidhe Yazmin Pacheco A01163697
Cecilia Franco Pacheco A01169685
Lariza Morales A01164245
Renata Calva Valencia A01370751
Roberto Iturbide A01166981

IMT
Carlos Alberto López Álvarez a01168193
Pablo Alfonso Lechuga Vázquez a01370051
Sergio Aguilera Suárez a01169680
Jorge Enrique Méndez Castellanos a01167391

CESAR TORRES

User

• Degree in Financial Management
• He moved two years ago to an apartment in Polanco
• He works 15 min far

cesar

• His car is a Peugeot 208
• He often uses it to go to work, but he spents more time on traffic and that bothers him

In the building he works is very difficult to find an empty place to park. So he needs to leave his car on the street, paying $64 per day.

OBJECTIVE:
Design a mobility device that allows our users to move from one place to another in a simple and comfortable way. Having an alternative system electric and manual, avoiding battery problems or even pollution.

E2=

e2=

Our inspiration

When people walk, run, dance or skate, the body moves without limits.
Each movement makes people feel free, light and alive.

Planned to be sold online and in retail stores.

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MOCK-UP

manual mode

electric mode 

estimated user weight

HOOK for attaching a purse or backpack

compacted form

LOCK BUTTON

On-off and breake botton 

2 front wheels

motors

BRUSHLESS HUB

• This motor already includes a 17:1 gearbox.
• The original nominal speed is 3300 RPM, after the gearbox is 182 RPM.
• The original torque is 3 NM and 51 NM after the gearbox.
• If we change the Wheel to a 30 cm one, the final speed will be 10 km/hr.

EMB brakes

The brakes work via a gear arrangement that press the brake pads towards the brake disk slowing it down.

This will be operated by the Arduino via a push button on the right side of the handle.

behavior in both bases

Batteries

• 2 batteries of 24V with 4Ah and a power of 250W.
• When the battery is fully charged the voltage is 24v. When it is discharged the voltage is 23.
• The conection of the batteries will be in parallel for mantain the voltage and sum the current of each battery

battery life

direction

handlebar

HANDLEBAR

2 rear tires

servos

• Servos, with a little wheel attached to it will be used to control direction.
• A servo is a motor which allows you to choose the output position between 0° and 180°.

SerVos

REAR TIRES

This is done with a PWM (Pulse Width Modulation). If you send a short pulse the position will be 0°, you can send larger pulses until the position of 180° is achieved.

Speed control

ACCELERATOR

By a PWM (Pulse-Width Modulation), we are going to control the energy that the batteries give to the motors.

By a transistor we are going open and close the energy for the motor and a optocoupler to protect the Arduino Board.

The PWM will be generate by the arduino board and this modulation will be controled by a potenciometer.

maximum speed

ARDUINO MICROCONTROLLER

LED indicators

We used a voltage divider and a voltage comparator with a LED to the exit to monitor the battery levels between 24 and 23v.

material

E2 - scooter weight

cost

E2 Scooter solves a mobility problem around universities, industries or companies. Reducing transportation time and avoiding fatigue.

E2 Scooter gives you the ability to move efficiently making your daily trips more convenient.

Thanks