CMPT401_TWU
Lab Report 5
18-10-2023
Jonah Watts
Table Of Contents:
- Lab 14.1: Joystick
- Lab 15.1: Flowing Water Light
- Lab 16.1: 7-Segment Display
- Lab 16.2: 4 Digit 7-Segment Display
- Lab 16.3: LED Matrix
- Assignment Project #1
- Assignment Project #2
Lab 14.1: Joystick
Lab 15.1: Flowing Water Light
Lab 16.1: 7-Segment Display
Lab 16.2: 4 Digit 7-Segment Display
Lab 16.3: LED Matrix
Assignment Project #1
Task Description:
The goal of this assignment is to create a joystick that will be able to control a message on a 4 number 7 segment display. For this project I used the word “HI” to move across the screen. As the joystick is pressed in a direction, the message is moved in that direction, and a different tone is played depending on the direction.
Hardware Components:
- 1x ESP32
- 1x ESP32 Breakout Board
- 1x Breadboard
- 1x Buzzer
- 1x 1k Ohm Resistor
- 1x PNP Transistor
- 1x Joystick
- 8x 220 Ohm Resistor
- 1x 4 Digit 7-Segment display
- 1x 74HC595
Circut Diagrams
Photo(s) of the breadboard:
Source Code
The Source code can be downloaded here here
#---------------------------------------------------------
# Jonah Watts
# Assignment 5, Project 1
# For CMPT 401
#---------------------------------------------------------
import time
from my74HC595 import Chip74HC595
from machine import Pin, ADC, PWM
import time
comPin=[25,26,27,14]
#array of mesage to display
num =[
[[0x89, 0xf9, 0xff, 0xff],[0xff, 0x89, 0xf9, 0xff], [0xff, 0xff, 0x89, 0xf9], [0xf9, 0xff, 0xff, 0x89]], #0
[[0xe3, 0xfb, 0xff, 0xff],[0xff, 0xe3, 0xfb, 0xff], [0xff, 0xff, 0xe3, 0xfb], [0xfb, 0xff, 0xff, 0xe3]], #1
[[0xdc ,0xfd, 0xff, 0xff],[0xff, 0xdc, 0xfd, 0xff], [0xff, 0xff, 0xdc, 0xfd], [0xfd, 0xff, 0xff, 0xdc]], #2
]
xPosition = 0
yPosition = 0
xVal=ADC(Pin(36))
yVal=ADC(Pin(39))
zVal=Pin(12,Pin.IN,Pin.PULL_UP)
xVal.atten(ADC.ATTN_11DB)
yVal.atten(ADC.ATTN_11DB)
xVal.width(ADC.WIDTH_12BIT)
yVal.width(ADC.WIDTH_12BIT)
#Function to display the LED
def led_display():
for i in range(0,4):
chns=Pin(comPin[i],Pin.OUT)
chip.shiftOut(0,num[yPosition][xPosition][i])
chns.value(1)
time.sleep_ms(1)
chns.value(0)
notes=[2000,3000,1000,5000]
passiveBuzzer=PWM(Pin(23),2000)
passiveBuzzer.init()
#Pin(15)-74hc595.ds, Pin(2)-74hc595.st_cp, Pin(4)-74hc595.sh_cp
chip = Chip74HC595(15,2,4)
refresh = 0
try:
while True:
led_display()
#only sample buzzer and joystick every 40ms
if refresh == 40:
refresh = 0
#change depending on joystick position
if xVal.read() < 1000:
xPosition = (xPosition-1)%4
passiveBuzzer.freq(notes[0])
passiveBuzzer.duty(512)
elif xVal.read() > 3000:
xPosition = (xPosition+1)%4
passiveBuzzer.freq(notes[1])
passiveBuzzer.duty(512)
elif yVal.read() < 1000:
yPosition = (yPosition-1)%3
passiveBuzzer.freq(notes[2])
passiveBuzzer.duty(512)
elif yVal.read() > 3000:
yPosition = (yPosition+1)%3
passiveBuzzer.freq(notes[3])
passiveBuzzer.duty(512)
else:
passiveBuzzer.duty(0)
refresh += 1
except Exception as e:
print("Error:", e)b
Video of program in action
Assignment Project #2:
Task Description:
The task of this assignment is to control an animation and sound with the 74HC595 chip. For this lab, when the green button is pressed, the animaiton (of pac-man) is played, as well as the pac-man theme song is played. When the red button is pressed, the music stops, and the animation is frozen in place. This is until the green button is once again pressed and the process wil repeat itself.
Hardware Components
- 1x ESP32
- 1x ESP32 Breakout Board
- 2x Breadboard
- 1x Buzzer
- 1x 1k Ohm Resistor
- 4x 10K Ohm Resistor
- 8x 220 Ohm Resistor
- 1x 8x8 matrix
- 2x 74HC595
Circut Diagrams
Photo(s) of the breadboard
Source Code
The Source code can be downloaded here here
#---------------------------------------------------------
# Jonah Watts
# Assignment 5, Project 2
# For CMPT 401
#---------------------------------------------------------
# Sources Used:
# https://producelikeapro.com/blog/wp-content/uploads/2022/01/Understanding-Note-Frequency-Charts-And-Why-You-Should-Be-Using-One_2.jpg
import time
from machine import Pin,PWM
from my74HC595 import Chip74HC595
numdata = [
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00,0xfe,0xfe,0x88,0x88,0x88,0xf8,0x70, # P
0x00,0x7e,0x7e,0xc8,0x88,0xc8,0x7e,0x7e, # A
0x00,0x38,0x7c,0xc6,0x82,0x82,0xc6,0x44, # C
0x00,0x00,0x18,0x18,0x18,0x00,0x00, # -
0x00,0xfe,0xfe,0x70,0x38,0x70,0xfe,0xfe, # M
0x00,0x7e,0x7e,0xc8,0x88,0xc8,0x7e,0x7e, # A
0x00,0xfe,0xfe,0x60,0x30,0x18,0xfe,0xfe, # N
0x00,0x1c,0x22,0x41,0x49,0x55,0x22,0x00,0x00, # Pac
0x3f,0x4e,0xcf,0xfe,0xcf,0x4e,0x3f,0x00, # Ghost
0x18,0x18,0x00,0x18,0x18,0x00,0x18,0x18, # Dots
0x00,0x18,0x18,0x00,0x3f,0x4e,0xcf,0xfe, # Dot + Ghost
0xcf,0x4e,0x3f,0x00,0x1c,0x22,0x41,0x41, # Ghost + Pac
0x55,0x22,0x00,0x0c,0x0c,0x00,0x0c,0x0c, # Dots + Pac
0x18,0x18,0x00,0x18,0x18,0x00,0x18,0x18, # Dots
0x3f,0x4e,0xcf,0xfe,0xcf,0x4e,0x3f,0x00, # Ghost
0x3f,0x4e,0xcf,0xfe,0xcf,0x4e,0x3f,0x00, # Ghost
0x3f,0x4e,0xcf,0xfe,0xcf,0x4e,0x3f,0x00, # Ghost
0x18,0x18,0x00,0x18,0x18,0x00,0x18,0x18, # Dots
0x18,0x18,0x00,0x18,0x18,0x00,0x18,0x18, # Dots
0x00,0x1c,0x22,0x41,0x49,0x55,0x22,0x00,0x00, # Pac
0x18,0x18,0x00,0x18,0x18,0x00,0x18,0x18, # Dots
0x18,0x18,0x00,0x18,0x18,0x00,0x18,0x18, # Dots
0x18,0x18,0x00,0x18,0x18,0x00,0x18,0x18, # Dots
0x3f,0x4e,0xcf,0xfe,0xcf,0x4e,0x3f,0x00, # Ghost
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, # " "
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, # " "
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, # " "
]
#First create an array for the diffearnt notes in teh selected key
notes={
"B6":1975,
"C":2093,
"C#":2217,
"D":2349,
"D#":2489,
"E":2637,
"F":2793,
"F#":2959,
"G":3135,
"G#":3322,
"A":3520,
"A#":3729,
"B":3951,
"C8":4186,
"C#8":4435,
"D8":4699,
"D#8":4978,
"E8":5274,
"F8":5587,
"F#8":5919,
"G8":6271,
"G#8":6644,
"A8":7040,
"A#8":7458,
"B8":7902,
}
# Write the songs as arrays
pacmanJingle = [
"B6","B","F#","D#",
"B", "F", "E", "NA",
"C", "C8", "G", "E",
"C8", "G", "E", "NA",
"B6","B","F#","D#",
"B", "F", "E","NA",
"E", "E", "F",
"F", "F#", "G",
"G", "G#", "A",
"NA", "NA", "NA", "NA",
"NA", "NA", "NA", "NA",
]
'''
Pin(15) - 74HC595(1).ds,
Pin(2) - 74HC595(1).st_cp,
Pin(4) - 74HC595(1).sh_cp,
Pin(5) - 74HC595(1).oe
74HC595(1).q7' - 74HC595(2).ds,
Pin(2) - 74HC595(2).st_cp,
Pin(4) - 74HC595(2).sh_cp,
Pin(5) - 74HC595(2).oe
'''
# Itit all of the peices
chip = Chip74HC595(15,2,4,5)
button1=Pin(14,Pin.IN,Pin.PULL_UP)
button2=Pin(12,Pin.IN,Pin.PULL_UP)
passiveBuzzer=PWM(Pin(27),2000)
passiveBuzzer.init()
passiveBuzzer.duty(0)
current_note = 0
last_screen = 0
try:
while True:
# If the button is pressed, play the jingle
if button2.value() == 0:
chip.clear()
for i in range(215):
last_screen = i
for k in range(5):
cols=0x01
for j in range(i,8+i):
chip.disable()
chip.shiftOut(0,numdata[j])
chip.shiftOut(1,~cols)
cols<<=1
chip.enable()
time.sleep_us(700)
#Play noise
if i%2 == 0:
if pacmanJingle[current_note] != "NA":
passiveBuzzer.duty(512)
passiveBuzzer.freq(notes[pacmanJingle[current_note]])
else:
passiveBuzzer.duty(0)
current_note = (current_note+1)%len(pacmanJingle)
else:
passiveBuzzer.duty(0)
if button1.value() == 0:
chip.enable()
passiveBuzzer.duty(0)
current_note = 0
break
else:
#Display
for k in range(5):
cols=0x01
for j in range(last_screen,8+last_screen):
chip.disable()
chip.shiftOut(0,numdata[j])
chip.shiftOut(1,~cols)
cols<<=1
chip.enable()
time.sleep_us(700)
except Exception as e:
print("Error:", e)