Create Launch.py

This is the main file that the rocket will launch with running, currently supplies data from the MPU6050 to the main flight computer which is a Raspberry Pi.

Author: Reiningecho90

Launch.py

@@ -0,0 +1,178 @@
+from datetime import datetime
+import smbus
+import math
+import time
+import sys
+import pandas as pd
+import RPi.GPIO as GPIO
+
+
+GPIO.setmode(GPIO.BOARD)
+GPIO.setup(18, GPIO.OUT)
+pwm = GPIO.PWM(18, 100)
+pwm.start(0)
+
+
+# Register
+power_mgmt_1 = 0x6b
+power_mgmt_2 = 0x6c
+
+def save_to_file():
+    angles =  (int(read_word_2c(0x3b)) / 131,
+               int(read_word_2c(0x3d)) / 131,)
+
+    file = open('MPUData.csv', 'a')
+    for i in angles:
+        file.write(str(angles[0]) + ', ' + str(angles[1]) + '\n')
+
+def read_byte(reg):
+    return bus.read_byte_data(address, reg)
+
+def read_word(reg):
+    h = bus.read_byte_data(address, reg)
+    l = bus.read_byte_data(address, reg+1)
+    value = (h << 8) + l
+    return value
+
+def read_word_2c(reg):
+    val = read_word(reg)
+    if (val >= 0x8000):
+        return -((65535 - val) + 1)
+    else:
+        return val
+
+def dist(a,b):
+    return math.sqrt((a*a)+(b*b))
+
+def get_y_rotation(x,y,z):
+    radians = math.atan2(x, dist(y,z))
+
+def get_x_rotation(x,y,z):
+    radians = math.atan2(y, dist(x,z))
+    return math.degrees(radians)
+
+bus = smbus.SMBus(1)
+address = 0x68
+
+bus.write_byte_data(address, power_mgmt_1, 0)
+
+count = 0
+status = True
+
+while status:
+
+    deploy = False
+    spike = False
+    spike_t = 0
+    dep_time = 0
+
+    if count == 200:
+        GPIO.output(18, True)
+        pwm.ChangeDutyCycle(5)
+        time.sleep(1)
+        pwm.ChangeDutyCycle(0)
+        GPIO.output(18, False)
+        dep_time = str(datetime.now())
+
+    a_x = read_word_2c(0x3b)
+    a_y = read_word_2c(0x3d)
+    a_z = read_word_2c(0x3f)
+
+    print ("\033c")
+
+    print ("Accel")
+    print ("------")
+
+    print ("\n")
+    sys.stdout.write(f"Scaled X: {a_x / 16348}")
+    if a_x / 16348 > 1.2:
+        spike = True
+        spike_t = str(datetime.now())
+    sys.stdout.flush()
+
+    print ("\n")
+    sys.stdout.write(f"Scaled Y: {a_y / 16348}")
+    if a_y / 16348 > 1.2:
+        spike = True
+        spike_t = str(datetime.now())
+    sys.stdout.flush()
+
+    print ("\n")
+    sys.stdout.write(f"Scaled Z: {a_z / 16348}")
+    if a_z /16348 > 1.2:
+        spike = True
+        spike_t = str(datetime.now())
+    sys.stdout.flush()
+
+    fail = False
+
+    if spike_t != dep_time:
+        fail = True
+        deploy = False
+    elif spike_t == dep_time and count > 50:
+        print ("\n")
+        sys.stdout.write("MPU6050 Data Read: MPU HAS CONFIRMATION OF NOMINAL PARACHUTE DEPLOY")
+        sys.stdout.flush()
+        deploy = True
+
+    print ("\n")
+
+    print (count)
+
+    if not deploy and fail:
+        sys.stdout.write("MPU6050 Data Read: CURRENT MPU DATA HAS SHOWN THAT PARAHUTE DEPLOY SEQUENCE MAY HAVE BEEN ANOMINAL!")
+        sys.stdout.flush()
+
+    save_to_file()
+
+    time.sleep(0.1)
+
+    count = count+1
+    if not spike and count > 168:
+        continue
+    elif spike and count > 168:
+        sys.stdout.write("\n")
+        sys.stdout.flush()
+        sys.stdout.write("\n")
+        sys.stdout.flush()
+        sys.stdout.write("Tango Delta, touchdown confirmed.")
+        sys.stdout.flush()
+        sys.stdout.write("\n")
+        sys.stdout.flush()
+        sys.stdout.write("Switching to ground control systems and preparing for data review.")
+        sys.stdout.flush()
+        status = False
+    elif spike and count > 300:
+        sys.stdout.write("Tango Delta anominal, touchdown timing failure.")
+        sys.stdout.flush()
+        status = False
+    else:
+        continue
+
+status = True
+
+time.sleep(5)
+
+while status:
+    print ("\n")
+    print ("Preparing data review systems, stand by for post-flight review.")
+    data_read = pd.read_csv('MPUData.csv', sep=', ', header=None, engine='python')
+    time.sleep(10)
+    for value in data_read:
+        if abs(value) > 5:
+            sys.stdout.write("\n")
+            sys.stdout.flush()
+            sys.stdiut.write("\n")
+            sys.stdout.flush()
+            sys.stdout.write(f"Anamoly found, G-Force value exceded nominal forces, force was equal to: {value} at point of anamoly, note that anomaly may have occured at parachute deploy but G limit still applies for deploy.")
+            sys.stdout.flush()
+        else:
+            sys.stdout.write("\n")
+            sys.stdout.flush()
+            sys.stdout.write("No anamolies found, craft safe on the ground, proceeding to post-flight calibration.")
+            sys.stdout.flush()
+            GPIO.output(18, True)
+            pwm.ChangeDutyCycle(0)
+            sys.stdout.write("Post flight calibration done, exiting program...")
+            sys.stdout.flush()
+            status = False