In this video I'll explain how to setup an ESP32 and other devices to communicate with a MQTT broker an handle the messages. Question or comment? Leave it below or send me an email: brandon@baldguydiy.com
hello great video, i'm currently trying to do the same except i need to send an image. is it possible? do you have any advice, tutorial, source code or anything that could help ?
I try to let my esp32 comunicate with my pi to than on my pi run a flask website to show my esp32 topics i litarly tried everything but im not getting there
Len Beasley. Sorry about the first one. I am trying to use the Rasberry Pi to connect to a number of ESP8622 chips and display the data on the Rasbbery Pi monitor. What software would I need on the monitor? Could it be in the form of spreadsheet with up to ten different va;ues.
Great Video, I've got a question though...When you set up your Sub and Pub messages in mosquitto do you need to give each device (ESP32) it's own unique name? I want to use the ESP32's to deliver data like Water and Fuel Tank Levels wirelessly back to the Rpi so I can then use the data in a Dashboard. So does the ESP32 for the Fuel tank sensor need it's own Sub and Pub called Fuel Tank 1 and then 2 or Water tank 1 and 2 etc... I'm not a Software guy...but I'm trying to set up my Sailboat with Rpi's as the system backbone.
You do need to set a unique device name in the ESP32 code, but that’s just for the sake of the broker allowing the device to connect. The messages and topics are not to device names, so you control what happens exclusively by the topic and message handling on the devices. Depending on how you’d like it to work, all devices could publish to the same topic with different messages, or each device could be separated to its own topic. I use both methods depending on circumstance. For what you’ve described, it’s probably easier to set a different topic for each devices readings, so that the message you send is only the reading and further encoding/decoding isn’t required. If all use the same topic, the message would need to be a combination of the device and the reading, which you’d have to adjust for on the receiving side to break the message into the device and readings. Hope that helps, sounds like a good project!
Thanks for watching. I did refer to two websites in the video where you can get the sample code. If you want the specific code I used in the video, send me an email to brandon@baldguydiy.com and I can send it to you.
