diff --git a/README.md b/README.md
index 02b03aff1d6709a0b3611d2e6d2c7ba24f20cb02..9283da2e93f2fc35ff1aeea50163234b905639f3 100644
--- a/README.md
+++ b/README.md
@@ -1,9 +1,7 @@
-# Digital Design Worksheet 1
+# DD Worksheet 1
+By <b>Cosmo Elford</b> 201018021
-### Authors
-Cosmo Elford
-
-## Task 1, 2
+# Task 1, 2 (Getting started)
Getting the LED to turn on with a battery and 220 Ohm resistor. In our week 3 lab session I discovered I didn't have the battery so I used the Raspberry Pi as a power source instead.
Code:
@@ -16,11 +14,14 @@ GPIO.setwarnings(False)
GPIO.setup(18,GPIO.OUT)
GPIO.output(18,GPIO.HIGH)
```
+
<img src="Task1.JPG" width="30%">
### I then upgraded the breadboard using the same principles I learnt in the previous task.
-## Task 3
+# Task 3 (3 LEDs)
+
+<img src="Task2.JPG" width="30%">
Code:
```
@@ -54,13 +55,103 @@ while True:
time.sleep(0.1)
```
-<img src="Task2.JPG" width="30%">
-
-### Short video:
+Short video:
[](http://www.youtube.com/watch?v=7xLNLzCIo9c)
-# Task 4
-## Using a button
+# Task 4 (Using buttons)
+
+Adding the first button:
+
+<img src="Task4.JPG" width="30%">
+
+Making sure that the button press is registering:
+
+<img src="Screenshot 06.10.23.png" width="30%">
+
+I then added a second button:
+
+<img src="Task4_1.JPG" width="30%">
+
+I then readded the 3 LEDs, recreating Task 3. To make sure they all worked I tested them with various GPIO pins
+
+<img src="Task4_2.JPG" width="30%">
+
+### After I had tested everything I wrote the seqeuncing code using the two buttons and the 3 LEDs
+
+Short video:
+
+[](http://www.youtube.com/watch?v=K9MPf20hbis)
+
+Final code:
+```
+import RPi.GPIO as GPIO
+import time
+
+GPIO.setmode(GPIO.BCM)
+GPIO.setwarnings(False)
+
+# LEDs LEFT-TO-RIGHT order
+led_pins = [26, 25, 24]
+
+# Button 1, 2
+button_1_pin = 22
+button_2_pin = 15
+
+GPIO.setup(button_1_pin, GPIO.IN, pull_up_down=GPIO.PUD_UP)
+GPIO.setup(button_2_pin, GPIO.IN, pull_up_down=GPIO.PUD_UP)
+
+# LEDs
+for led_pin in led_pins:
+ GPIO.setup(led_pin, GPIO.OUT)
+
+# Initialize variables
+sequence_running = True
+sequence_direction = 1 # 1 for forward, -1 for reverse
+current_led = 0
+
+def update_led_state():
+ for i in range(len(led_pins)):
+ GPIO.output(led_pins[i], i == current_led)
+
+while True:
+ # Button 1
+ if (GPIO.input(button_1_pin) == False):
+ time.sleep(0.25)
+ sequence_running = not sequence_running
+
+ if (sequence_running):
+ print("Start")
+ else:
+ print("Stop")
+
+ # Button 2
+ if (GPIO.input(button_2_pin) == False):
+ print("Change sequence")
+ time.sleep(0.25)
+ sequence_direction *= -1
+ sequence_running = True
+
+ if sequence_running:
+ # Update the LED state
+ update_led_state()
+
+ # Wait for 0.5 seconds
+ time.sleep(0.5)
+
+ # Move to the next LED
+ current_led += sequence_direction
+
+ # Wrap around if needed
+ if current_led < 0:
+ current_led = len(led_pins) - 1
+ elif current_led >= len(led_pins):
+ current_led = 0
+```
+
+Console logs:
+
+<img src="Screenshot 06.10.23_2.png" width="30%">
-<img src="Screenshot 06.10.23.png" width="30%">
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+# Task 5
+...
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diff --git a/Screenshot 06.10.23_2.png b/Screenshot 06.10.23_2.png
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diff --git a/Task4.JPG b/Task4.JPG
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diff --git a/Task4_1.JPG b/Task4_1.JPG
new file mode 100644
index 0000000000000000000000000000000000000000..a438a36a13265168438b3e39a6e3b6d15856941a
Binary files /dev/null and b/Task4_1.JPG differ
diff --git a/Task4_2.JPG b/Task4_2.JPG
new file mode 100644
index 0000000000000000000000000000000000000000..cc0a407283d5bf9a51619c6596d5428621dc4286
Binary files /dev/null and b/Task4_2.JPG differ
diff --git a/Task5.py b/Task5.py
new file mode 100644
index 0000000000000000000000000000000000000000..746346c90f813473260dc33694bb023b181d1442
--- /dev/null
+++ b/Task5.py
@@ -0,0 +1,62 @@
+import RPi.GPIO as GPIO
+import time
+
+GPIO.setmode(GPIO.BCM)
+GPIO.setwarnings(False)
+
+# LEDs LEFT-TO-RIGHT order
+led_pins = [26, 25, 24]
+
+# Button 1, 2
+button_1_pin = 22
+button_2_pin = 15
+
+GPIO.setup(button_1_pin, GPIO.IN, pull_up_down=GPIO.PUD_UP)
+GPIO.setup(button_2_pin, GPIO.IN, pull_up_down=GPIO.PUD_UP)
+
+# LEDs
+for led_pin in led_pins:
+ GPIO.setup(led_pin, GPIO.OUT)
+
+# Initialize variables
+sequence_running = True
+sequence_direction = 1 # 1 for forward, -1 for reverse
+current_led = 0
+
+def update_led_state():
+ for i in range(len(led_pins)):
+ GPIO.output(led_pins[i], i == current_led)
+
+while True:
+ # Button 1
+ if (GPIO.input(button_1_pin) == False):
+ time.sleep(0.25)
+ sequence_running = not sequence_running
+
+ if (sequence_running):
+ print("Start")
+ else:
+ print("Stop")
+
+ # Button 2
+ if (GPIO.input(button_2_pin) == False):
+ print("Change sequence")
+ time.sleep(0.25)
+ sequence_direction *= -1
+ sequence_running = True
+
+ if sequence_running:
+ # Update the LED state
+ update_led_state()
+
+ # Wait for 0.5 seconds
+ time.sleep(0.5)
+
+ # Move to the next LED
+ current_led += sequence_direction
+
+ # Wrap around if needed
+ if current_led < 0:
+ current_led = len(led_pins) - 1
+ elif current_led >= len(led_pins):
+ current_led = 0
\ No newline at end of file