Code

Code Repository

Hello and welcome to our code repository! Here you can find the bulk of the code used in deploying the webpage, as well as hosting the flask server, as well as controlling the pi remotely. Please see below for samples of our code.

In the spirit of good attribution, here are the many Github links, tutorials that we borrowed from.

  • https://github.com/adafruit/Adafruit_CircuitPython_PCA9685/blob/main/examples/pca9685_simpletest.py
  • https://github.com/fatedier/frp
  • https://github.com/jantman/python-amcrest-noauth-proxy/blob/master/amcrest_noauth_proxy.py
  • https://github.com/jquery/jquery
  • https://github.com/soundar24/roundSlider
  • https://github.com/illuspas/Node-Media-Server
  • https://github.com/sixrevisions/responsive-full-background-image/blob/master/responsive-full-background-image-demo.html

 

Code for App.py

this Python code deploys a Flask application, and remotely adjusts the pump power levels based on values inputted by the user from the webpage via jQurey/AJAX functionalities. (for more information, please refer to our software page!)

from bs4 import BeautifulSoup

from board import SCL, SDA

import busio

 

from flask import Flask, render_template, request, redirect, jsonify

 

# Import the PCA9685 module.

from adafruit_pca9685 import PCA9685

 

# Create the I2C bus interface.

i2c_bus = busio.I2C(SCL, SDA)

 

# Create a simple PCA9685 class instance.

pca = PCA9685(i2c_bus)

 

# Set the PWM frequency to 60hz.

pca.frequency = 60

 

app = Flask(__name__)

 

status = “blah blah blah”

 

acc_power = “lalaland”

 

@app.route(“/”)

def index():

return render_template(“webpage.html”)

 

@app.route(“/on”)

def on():

pca.channels[0].duty_cycle = 0

pca.channels[12].duty_cycle = 0

print(“Its on!”)

global status

status = “on”

 

return render_template(“on.html”)

 

@app.route(“/off”)

def off():

pca.channels[0].duty_cycle = 0

pca.channels[12].duty_cycle = 0

print(“Its off!”)

global status

status = “off”

return render_template(“off.html”)

 

@app.route(‘/_command’)

def command():

percentage = request.args.get(‘percent’)

print(percentage)

#return jsonify(description=”you sent something”, percentage=percentage)

if status == “on”:

pca.channels[0].duty_cycle = int(int(0xFFFF * int(percentage)/100) * int(acc_power)/100)

pca.channels[12].duty_cycle = int(int(0xFFFF * (1 – int(percentage)/100)) * int(acc_power)/100)

 

elif status == “off”:

pca.channels[0].duty_cycle = 0

pca.channels[12].duty_cycle = 0

 

print(request.args.get(‘percent’) + “% was pressed!”)

print(status)

print(“/_command acc_power is “, acc_power)

 

print(“left motor is “ + str(pca.channels[0].duty_cycle))

print(“right motor is “ + str(pca.channels[12].duty_cycle))

return jsonify(command=request.args.get(‘command’))

 

@app.route(‘/acc’)

def commando():

global acc_power

acc_power = request.args.get(‘power’)

#print(“power is” + str(power_percentage))

 

 

 

# global acc_power

# acc_power = int(power_percentage)/100

print(“acc_power is “ + str(acc_power)) 

print(“left motor is “ + str(pca.channels[0].duty_cycle))

print(“right motor is “ + str(pca.channels[12].duty_cycle))

 

return jsonify(power=request.args.get(‘power’))