Hey guys, I just wanted to check if my sensor is working and I wrote a simple command to show me the date and to trigger my sds011 device. `from sds011 import * from datetime import datetime import time print(datetime.now()) #2022-6-25 22:12:12 def time_now(): dateTimeObj = datetime.now() timestampStr = dateTimeObj.strftime("%d-%b-%Y (%H:%M:%S)") return timestampStr

sensor = SDS011("/dev/ttyUSB0") sensor.sleep(sleep=False)

sensor.sleep(sleep=True) `

But I always get the following output and error: 2022-06-25 22:18:35.373715 WARNING:root:SDS011: While constructing the instance the sensor is not responding. Maybe in sleeping, in passive mode, or in a duty cycle? Will wake it up. Traceback (most recent call last): File "/home/teamplazer/try5.py", line 11, in sensor = SDS011("/dev/ttyUSB0") File "/home/teamplazer/sds011.py", line 184, in init self.__send(self.Command.WorkState, File "/home/teamplazer/sds011.py", line 465, in __send raise IOError("SDS011 sensor is not responding.") OSError: SDS011 sensor is not responding.

Does anyone know what to do?

Hey guys, I'm a complete Newbie and I tried to create a raspberry pi project to measure the airquality with the following code: import paho.mqtt.publish as publish from sds011 import * sensor = SDS011("/dev/ttyUSB0")

channelID = "acd" apiKey = "abcd" topic = "channels/" + channelID + "/publish/" + apiKey mqttHost = "mqtt.thingspeak.com"

sensor.sleep(sleep=False) time.sleep(10) pmt_2_5, pmt_10 = sensor.query()

print (time_now(), end='') print (f" PMT2.5: {pmt_2_5} Mikrogramm/Kubikmeter ", end='') print (f"PMT10 : {pmt_10} Mikrogramm/Kubikmeter") sensor.sleep(sleep=True) time.sleep(2) tPayload = "field1=" + str(pmt_2_5)+ "&field2=" + str(pmt_10)

while(True): pmt_2_5, pmt_10 = get_data() tPayload = "field1=" + str(pmt_2_5)+ "&field2=" + str(pmt_10) try: publish.single(topic, payload=tPayload, hostname=mqttHost, port=tPort, > save_log() except: print ("[INFO] Failure in sending data") time.sleep(60)

But when I try to run the program I get the following error: Traceback (most recent call last): File "/home/teamplazer/airquality3.py", line 3, in sensor = SDS011("/dev/ttyUSB0") File "/home/teamplazer/sds011.py", line 191, in init self.__get_current_config() File "/home/teamplazer/sds011.py", line 336, in __get_current_config response = self.__send(self.Command.DutyCycle, File "/home/teamplazer/sds011.py", line 465, in __send raise IOError("SDS011 sensor is not responding.") OSError: SDS011 sensor is not responding.

How can I activate the sensor? Thank you for your help!

A PR to fix these issues:

• https://github.com/rydercalmdown/pi_air_quality_monitor/issues/1
• https://github.com/rydercalmdown/pi_air_quality_monitor/issues/8

Hi,

I have to uninstall serial and install pyserial and then the code runs but I only get a blank webpage with the heading : Raspberry Pi Air Quality Monitor. no data

Hey how can I incerase the time of the data stored in the database, for example I'd like to store the data of 24h maybe making a read of the sensor every 10 minutes. Where I change this parameter?

I have gotten the code to run and the web page shows the data being collected, however, I cannot find where or access the hard data being stored. I believe it is being added to the "dump.rdb" file which you can get to through data -> redis. I'm pretty new to Pi's so any help would be appreciated!