Raspberry + Sensor to Plotly HOW? - Printable Version +- Python Forum (https://python-forum.io) +-- Forum: Python Coding (https://python-forum.io/forum-7.html) +--- Forum: Homework (https://python-forum.io/forum-9.html) +--- Thread: Raspberry + Sensor to Plotly HOW? (/thread-6440.html) |
Raspberry + Sensor to Plotly HOW? - azairek - Nov-22-2017 Hello :) save my life. PYTHON+RASPI! I have some problems. I have raspberry pi 3 + Ultrasound Sensor HC-SR04. I am reading distance from it and want to use live-data chart in plot.ly but can't figure out how :/ I have written all on stackowerflow with codes: https://stackoverflow.com/questions/47441946/raspberry-sensor-to-plotly-how-python RE: Raspberry + Sensor to Plotly HOW? - sparkz_alot - Nov-22-2017 (Nov-22-2017, 08:06 PM)azairek Wrote: I have some problems Isn't very useful. What problems are you having. If you are getting errors, you need to post the error codes (in their entirety). Be sure and read the BBCode Help in order to properly post code, errors and output. I'll also add, it's a bit cheeky of you to ask for help on this forum and then tell people to go look on another forum to see what your problem is. RE: Raspberry + Sensor to Plotly HOW? - azairek - Nov-22-2017 This code help me to check and calculate distance between my sensor and object on his way. import RPi.GPIO as GPIO import time import signal import sys # use Raspberry Pi board pin numbers GPIO.setmode(GPIO.BCM) # set GPIO Pins pinTrigger = 23 pinEcho = 24 def close(signal, frame): print("\nTurning off ultrasonic distance detection...\n") GPIO.cleanup() sys.exit(0) signal.signal(signal.SIGINT, close) # set GPIO input and output channels GPIO.setup(pinTrigger, GPIO.OUT) GPIO.setup(pinEcho, GPIO.IN) while True: # set Trigger to HIGH GPIO.output(pinTrigger, True) # set Trigger after 0.01ms to LOW time.sleep(0.00001) GPIO.output(pinTrigger, False) startTime = time.time() stopTime = time.time() # save start time while 0 == GPIO.input(pinEcho): startTime = time.time() # save time of arrival while 1 == GPIO.input(pinEcho): stopTime = time.time() # time difference between start and arrival TimeElapsed = stopTime - startTime # multiply with the sonic speed (34300 cm/s) # and divide by 2, because there and back distance = (TimeElapsed * 34300) / 2 print ("Distance: %.1f cm" % distance) time.sleep(1)Now i need to change/remake this code so that it will send my distance to plotly. import plotly.plotly as py from plotly.graph_objs import Scatter, Layout, Figure import time import readadc username = 'a_user_name' api_key = 'an_api_key' stream_token = 'd0olq2nktv' py.sign_in(username, api_key) trace1 = Scatter( x=, y=, stream=dict( token=stream_token, maxpoints=200 ) ) layout = Layout( title='Raspberry Pi Streaming Sensor Data' ) fig = Figure(data=[trace1], layout=layout) print py.plot(fig, filename='Raspberry Pi Streaming Example Values') # temperature sensor connected channel 0 of mcp3008 sensor_pin = 0 readadc.initialize() i = 0 stream = py.Stream(stream_token) stream.open() #the main sensor reading loop while True: sensor_data = readadc.readadc(sensor_pin, readadc.PINS.SPICLK, readadc.PINS.SPIMOSI, readadc.PINS.SPIMISO, readadc.PINS.SPICS) stream.write({'x': i, 'y': sensor_data}) i += 1 # delay between stream posts time.sleep(0.25) RE: Raspberry + Sensor to Plotly HOW? - sparkz_alot - Nov-22-2017 I believe you lost your indentation when you pasted between the code tags. Try using the key combination "Ctrl + Shift + v" when pasting, that should maintain the indentation and any other formatting. |