Added Exercise 7 Template

The last exercise in lab 4b is an unnecessary time sink. We provided a template that still makes them apply the averager function they made previously, know how to display things on the I2C, and have general knowledge on the pins. This template could be subject to change to make it harder on the students(right now it is a bit easy).

Author: nprasad2358

book/labs/4_measure_tall_things/b_build_an_inclinometer/main.py

@@ -0,0 +1,73 @@
+# Imports
+import time
+import math
+from machine import Pin, I2C
+from imu import MPU6050
+from ssd1306 import SSD1306_I2C
+from averager import Averager
+
+
+def main():
+    i2c = I2C(id=____, sda=Pin(_____), scl=Pin(____), freq=400_000) # Fill In Based on Pin Sheet
+    led = Pin(25, Pin.OUT)
+    button = Pin(____, Pin.IN, Pin.PULL_UP) # Fill In Based on Pin Sheet
+    inclinometer = Inclinometer(i2c, button, led)
+    while True:
+        inclinometer.write()
+        for i in range(50):
+            inclinometer.read()
+        
+    
+class Inclinometer:
+    def __init__(self, i2c, button, led, samples = 50):
+        self.display = Display(i2c)
+        self.accelerometer = MPU6050(i2c)
+        self.button = button
+        self.led = led
+        # Define x, y, and z as Averager Objects(Look at Parameters For Sample Size!)
+        self.x = ____
+        self.y = ____
+        self.z = ____
+        
+    def read(self):
+        x, y, z = self.accelerometer.accel.x, self.accelerometer.accel.y, self.accelerometer.accel.z
+        # Add x, y, and z values into Averager Object 
+        ____ # x
+        ____ # y
+        ____ # z
+        
+    def write(self):
+        if self.button.value():
+            # Get x, y, and z values from Average Object
+            x = ____
+            y = ____
+            z = ____
+            self.display.update(x, y, z)
+        else:
+            self.display.hold()
+        
+
+class Display(SSD1306_I2C):
+    def __init__(self, i2c):
+        super().__init__(128, 64, i2c)
+        self.fill(0)
+        self.text('loading...', 0, 0, 1)
+        self.show()
+        
+    def update(self, x, y, z):
+        # Print Out x, y, and z values
+        self.fill(0)
+        self.text(____, 0, 10, 1)
+        self.text(____, 0, 20, 1)
+        self.text(____, 0, 30, 1)
+        self.text("-", 0, 40, 1)
+        self.show()
+        
+    def hold(self):
+        self.fill_rect(0, 0, 32, 9, 1)
+        self.text("HOLD", 0, 1, 0)
+        self.show()
+        
+        
+if __name__ == '__main__':
+    main()