Flowcode Support Board

Hi,
I am trying to test the enviroment monitoring app developer out, all seems fine on the ESP side but when I launch the web app Norton sulks and throws a threat up saying it has prevented the connection to broker.hivemq.com because it is a dangerous website. Threat category URL:Blacklist

I have tried disabling Norton temporarily but it is still blocked?

Are there other options I could try, I am totally new to MQTT.
If I had local MQTT would Norton still complain. If not does anyone know if it is possible to install on ESP32 and is there an idiots guide.

Regards,
Bob

Hi Bob

I don't think the ESP has enough resources to run a MQTT broker and I'm unaware of any designed to run on such. More or less any RPi can though and the WiKi documents an install of Mosquitto which I run on a RPi 3B. I documented setup in the forum and connection https://www.flowcode.co.uk/forums/viewt ... 419#p19419

I used MQTTX, CLI and FC charts to test. MQTTX is a PC app that acts as a client to publish / subscribe.

Norton should be able to whitelist HiveMQ if required but I haven't had any trouble connecting to HiveMQ and I use Norton.

Hope this helps

Hi Bob,

Reddit suggested this one.
https://flespi.com/mqtt-broker

Here's the thread.
https://www.reddit.com/r/esp32/comments ... tt_to_use/

Googling this and Google AI has suggested some ways to resolve the Norton block.
norton blocking broker.hivemq.com

Hi

I haven't had any need, but you can whitelist from here


In exclusions you can specify a website you know to be safe and trust.

Regards

Thanks, I have it working of sorts, I am not sure why I needed to add to white list where temporary disabling Norton still blocked it?
Anyway, the next issue is the SHT31, all I am getting is -45 temp and 0 for humidity. Same values if not connected. I think it is a pin issue as my ESP32 seems different.
If I put fixed values in I get them on the trend so that side of things is working.

Regards,
Bob

Hi Bob,

Maybe try a software channel for the I2C and see if that's any better. Also what pins are you using the ESP32 has some pins which are input only.

Hi,
I an not sure what the issue is but I have it working. I had to use a SHT40 (luckily I had one) and used software but on the hardware pins? (SCL GPIO22) (SDA GPIO21) on the device I have.
Only issue (thing I want to change) is the scrolling trend. I would like a Last xx readings where the one in the demo keeps on incrementing so the trend width gets smaller and smaller as time goes on.

Regards,
Bob

Hi Bob

Further to above I thought I'd follow along and discovered Norton doesn't like "broker.hivemq.com" and I had to whitelist. Previously I hadn't used that address so never saw the issue until now.

This brings me to my next question. I have a free account with HiveMQ but according to my settings I don't use broker.hivemq.com it is instead a specific URL. Are you using a free account and if so is it using broker.hivemq.com ?

Regards

Hi,
Yes it is broker.hivemq.com as that is what it is in the example. I will be looking at your post for a local one on the Raspberry Pi later as I think that will be the end device.

I am finding App developer quite a bit different, I thought I had found a getting started guide but cannot find it again.

Regards,
Bob

For interest - there is a MQTT server that will run on the esp32 - PicoMQTT. It is quite limited (5-10 connections) and so far I haven't managed to get it to run - but for 'remote' or low-power scenarios it might be a suitable alternative to the power of a RPi....

Having said which - a Pico is probably cheaper than and S3 so there might not be huge benefits to using it?

Martin