Hi Sara
I add one led to my circuit for control:
def sub_cb(topic, msg):
print((topic, msg))
if msg == b’ON’:
led.value(1)
print(“LED turned ON”)
elif msg == b’OFF’:
led.value(0)
print(“LED turned OFF”)
but I have two problem at now:
this problem and this alarm
Traceback (most recent call last):
File “”, line 94, in
ValueError: too many values to unpack (expected 2)
line 94 temp, hum=read_sensor()

Hi.
What LED are you referring to?
Regards,
Sara

Make sure you set up the node red mqtt nodes properly.
If you’re using the broker with a password and user, make sure you insert those there.
Additionally, make sure you have the mqtt broker set up properly (allowing remote connection): https://randomnerdtutorials.com/how-to-install-mosquitto-broker-on-raspberry-pi/
Regards,
Sara

Declare your pin like this:
pin14 = Pin(14, Pin.IN, Pin.PULL_UP)

and use it like this:
sensor1 = dht.DHT22(pin14)

File “umqttsimple.py”, line 102, in connect
MQTTException: 2

The above is
“Connection Refused: Identifier rejected”

After some googling, I found out that there was a change to Mosquitto,
https://github.com/daq-tools/umqtt-example/pull/1

The fix for the above error is to change line #13 in umqttsimple.py to have a “keepalive” of 60.

class MQTTClient:

def __init__(self, client_id, server, port=0, user=None, password=None, keepalive=60,
ssl=False, ssl_params={}):


Thanks for mention those details.
I’ll add some more information about the tutorial.
Regards,
Sara

If Thonny is installed using the link to your comprehensive instructions as given in your post above, setting up the software for the specific microcontroller is included. Should a newbie have already installed Thonny beforehand without reading the ‘instruction manual,’ then it is easy to miss the section on setting up the options for the ESP32. In fact, I had previously installed Thonny, and when getting to the section “save as,” it was clear that something was missing as the screen did not show the option to save to the microcontroller. A quick web search brought up the website, as I had mentioned in my original post.

Therefore, it would be helpful to insert a relevant comment within your article saying that if the “save as” option is missing, then refer to your instruction article for setting up Thonny.

Regarding your allegation regarding plagiarism by the other site and noting your work is under copyright, that is a matter to take up accordingly. The link I provided resulted from a simple web search – no intention at all to deviate away from the randomnerdtutorials that are excellent.

Moral of the story – RTBM

That website copied all our instructions from this tutorial: https://randomnerdtutorials.com/getting-started-thonny-micropython-python-ide-esp32-esp8266/