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| import adafruit_dht | |
| from ISStreamer.Streamer import Streamer | |
| import time | |
| import board | |
| # --------- User Settings --------- | |
| SENSOR_LOCATION_NAME = "Office" | |
| BUCKET_NAME = ":partly_sunny: Room Temperatures" | |
| BUCKET_KEY = "dht22sensor" | |
| ACCESS_KEY = "ENTER ACCESS KEY HERE" | |
| MINUTES_BETWEEN_READS = 10 | |
| METRIC_UNITS = False | |
| # --------------------------------- | |
| dhtSensor = adafruit_dht.DHT22(board.D4) | |
| streamer = Streamer(bucket_name=BUCKET_NAME, bucket_key=BUCKET_KEY, access_key=ACCESS_KEY) | |
| while True: | |
| try: | |
| humidity = dhtSensor.humidity | |
| temp_c = dhtSensor.temperature | |
| except RuntimeError: | |
| print("RuntimeError, trying again...") | |
| continue | |
| if METRIC_UNITS: | |
| streamer.log(SENSOR_LOCATION_NAME + " Temperature(C)", temp_c) | |
| else: | |
| temp_f = format(temp_c * 9.0 / 5.0 + 32.0, ".2f") | |
| streamer.log(SENSOR_LOCATION_NAME + " Temperature(F)", temp_f) | |
| humidity = format(humidity,".2f") | |
| streamer.log(SENSOR_LOCATION_NAME + " Humidity(%)", humidity) | |
| streamer.flush() | |
| time.sleep(60*MINUTES_BETWEEN_READS) |
Still getting pretty much the same thing for some reason:
pi@enviro1:/etc $ python3 tempsensor.py
RuntimeError, trying again...
Traceback (most recent call last):
File "tempsensor.py", line 28, in
temp_f = temp_c * 9.0 / 5.0 + 32
TypeError: unsupported operand type(s) for *: 'NoneType' and 'float'
Again, if I try to run it a couple more times, it does eventually work. Just not sure why it runs successfully sometimes and not others.
Thanks.
Hi Elizabeth,
Not sure if this has been resolved, but I have been having the same issue. I replaced 29 with temp_f = "{:.2f}".format(temp_c * 9.0 / 5.0 +32.0). I noticed that when I ran the python code, after I made the changes to line 29, it would come back initially with the error that others pointed out. I ran it a few more times and then refreshed my dashboard on initial state and then ran the code again and it started to work. I would have to repeat this every time I stopped it and wanted to start it back up again. Not sure why it is doing it but as long as I can SSH into the pi and willing to run the code a few times it seems to work fine now.
Hi,
Great project but I am slightly stuck. My first issue is pip3 install pureio, for some reason I am getting a 404 error, so I am not sure if this is causing my issue, I don't think that it is but I could be wrong. My second issue is this I am using BME280 but not adafruit one, I have followed both options but still cannot get it to work. I am sure that this is caused by my sensor not being adafruit but this one or the crawlspace one still give me an error.
Hello! I have two Pis with DHT22 sensors on them that I set up using your post here. Both are working great....sometimes. While I have them set to run the script at startup in cron, I have found that it doesn't always start and when I go to run it manually, I get this message that others have reported above:
RuntimeError, trying again...
Traceback (most recent call last):
File "tempsensor.py", line 28, in
temp_f = format(temp_c * 9.0 / 5.0 + 32.0, ".2f")
TypeError: unsupported operand type(s) for *: 'NoneType' and 'float'
I have nearly zero experience with Python, or any coding really for that matter, so I'm not 100% sure how to troubleshoot this but I have tried some of the adjustments mentioned above without luck.
The odd thing that I really don't understand is that sometimes it'll run and sometimes it won't. Normally I wait a few minutes to try again and then it magically works. This does not compute.
I really love this project by the way. It's exactly what I was looking for.
Thanks!