ECE ILLINOIS

ECE 445 Spring 2016 Smart closet Group 24 Luchuan Zhang Yiwei Li

Motivation  Partially see clothes  Closet too large to pick clothes  Unable to memorize all worn time for each clothes

Introduction  A direct display for all clothes in a personal closet.  Automatically drive clothes  Organize and record all information for users.

Objectives  Record each clothes’ worn times  Automatically take photos for user's clothes  A LED system to highlight the clothes  A 7" touchscreen display

Block diagram

System Overview  Hardware Power supply, Microcontroller, Motor driver, LED, distance sensor PCB design  Software User interface Logic control

Power Supply  A 5V 3A adaptor power the motor and LED  A 5V 2A adaptor power Rasberry pi

Microcontroller (Rasberry Pi)  Power by 5V 2A  Can send and receive digital signal  Send PWM signal  Camera socket  HDIM port

Stepper motor  4 phase 2 coils stepper motor  Four steps to drive it forward

Schematic diagram for motor driver

Calculation for motor driver （ Vcc ）

Calculation for motor driver (resister value)

LED  NeoPixel chip  Power: 5V  Input: PWM signal

Example Code LED_COUNT = 10 # Number of LED pixels. LED_PIN = 18 # GPIO pin connected to the pixels (must support PWM!). LED_FREQ_HZ = # LED signal frequency in hertz (usually 800khz) LED_DMA = 5 # DMA channel to use for generating signal (try 5) LED_BRIGHTNESS = 200 # Set to 0 for darkest and 255 for brightest LED_INVERT = False # True to invert the signal (when using NPN transistor level shift) strip = Adafruit_NeoPixel(LED_COUNT, LED_PIN, LED_FREQ_HZ, LED_DMA, LED_INVERT, LED_BRIGHTNESS) strip.begin() strip.setPixelColorRGB((self.input-1), 0,0,0) strip.show()

Distance sensor  Detect object range: 2cm to 10 cm

Level shifter Motor driver GPIO PIN distance sensor

Graphical User Interface  Written in Python  Using Tkinter Library  Features: Buttons, dialogue window, scroll bar, radiobuttons

Sample Code root = Tk() root.wm_geometry("800x400") root.columnconfigure(0, weight = 1) root.rowconfigure(0,weight = 1) class main(Frame): def __init__(self, *args, **kwargs): Frame.__init__(self, *args, **kwargs) container = Frame(self, width = 800, height = 480) container.pack(side = "top", fill="both", expand = True) container.grid_rowconfigure(0, weight=1) container.grid_columnconfigure(0, weight=1) self.frames = {} for F in (StartPage, PagePick, PageReturn, PageDelete): frame = F(container, self) self.frames[F] = frame frame.grid(row=0, column=0, sticky="nsew") self.show_frame(StartPage) def show_frame(self, cont): frame = self.frames[cont] frame.tkraise()

Flow chart

Conclusion and future work  All functions work.  Build an ios app. Remotely control closet and get information.  Add mechanical equipment to automatically pull clothes off from closet.

Credits  Luke Wendt  Professor Jonathan

Thank You!