gistfile1.txt

# -*- coding: utf-8 -*-
# !/usr/bin/python3

import socket
import dash
import dash_daq as daq
import dash_html_components as html
import dash_core_components as dcc
import plotly
import plotly.graph_objs as go
from collections import deque
from dash.dependencies import Output, Input, State
import serial
from pyfirmata import Arduino, util
import time
import pymysql
import pandas
import mysql.connector

external_stylesheets = ['http://192.168.1.104/style.css', '/assets/w3css.css']

app = dash.Dash(__name__, external_stylesheets=external_stylesheets)
device = '/dev/ttyACM0'  # this will have to be changed to the serial port you are using
try:
	print( "Trying...", device )
	arduino = serial.Serial( device, 115200, timeout=.1 )
	arduino.flush()
	print( "Successfully connected on ", device )
except:
	print( "Failed to connect on", device )

app.scripts.config.serve_locally = True
app.config['suppress_callback_exceptions'] = True


app.layout = html.Div(children=[
	daq.Gauge(
			id='Nuts1',
			label="Temp 1 - Top Tank Interior:",
			color={"gradient": True, "ranges": {"green": [-20, 180], "yellow": [180, 220], "red": [220, 500]}},
			labelPosition="top",
			units="Count",
			value=0,
			min=-20,
			max=500,
			showCurrentValue=True,
		),
	dcc.Interval(
			id='interval-component',
			interval=1*100, # in milliseconds
			n_intervals=0
		)
	], className='two columns', style={'margin-left': '15px'})


@app.callback(
    Output('Nuts1', 'value'),
    [Input('interval-component', 'n_intervals')]
)
def clicks8(value):
		i=8
		data = arduino.readline()
		pieces = data.decode().split(",", 9)
		value = pieces[8]
		i=i+1
		print(value)
		return

if __name__ == '__main__':
	app.run_server(host= '0.0.0.0', debug=True, threaded=False, processes=False)


The errors that appear are the following:

Traceback (most recent call last):
  File "/usr/local/lib/python3.7/site-packages/flask/app.py", line 2309, in __call__
    return self.wsgi_app(environ, start_response)
  File "/usr/local/lib/python3.7/site-packages/flask/app.py", line 2295, in wsgi_app
    response = self.handle_exception(e)
  File "/usr/local/lib/python3.7/site-packages/flask/app.py", line 1741, in handle_exception
    reraise(exc_type, exc_value, tb)
  File "/usr/local/lib/python3.7/site-packages/flask/_compat.py", line 35, in reraise
    raise value
  File "/usr/local/lib/python3.7/site-packages/flask/app.py", line 2292, in wsgi_app
    response = self.full_dispatch_request()
  File "/usr/local/lib/python3.7/site-packages/flask/app.py", line 1815, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "/usr/local/lib/python3.7/site-packages/flask/app.py", line 1718, in handle_user_exception
    reraise(exc_type, exc_value, tb)
  File "/usr/local/lib/python3.7/site-packages/flask/_compat.py", line 35, in reraise
    raise value
  File "/usr/local/lib/python3.7/site-packages/flask/app.py", line 1813, in full_dispatch_request
    rv = self.dispatch_request()
  File "/usr/local/lib/python3.7/site-packages/flask/app.py", line 1799, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "/usr/local/lib/python3.7/site-packages/dash/dash.py", line 1073, in dispatch
    response.set_data(self.callback_map[output]['callback'](*args))
  File "/usr/local/lib/python3.7/site-packages/dash/dash.py", line 969, in add_context
    output_value = func(*args, **kwargs)
  File "/var/www/html/Nuts.py", line 103, in clicks8
    value = pieces[8]
IndexError: list index out of range