Create example code for ESP32-S3 (send and receive data via MQTT QoS 1)

Job Description:

Initial situation: ESP32-S3-WROOM-1 is to send and receive data via MQTT QoS 1.

WiFi: Entry of credentials in the web portal via initial access point (no hard coding of credentials)

Protocoll: MQTT with "Quality of Service" 1

MQTT Broker: HiveMQ

Data to be sent Publisher 1 (topic: /chip-id/stat/....)

1. temperature value e.g. 22.3°C

2. temperature setpoint e.g. 25°C

3. configuration parameter in piece e.g.: 1,0,-5,2,50,8

Data to be sent Publisher 2 (can be done via MQTT Explorer, topic: /chip-id/cmd/....)

1. temperature set point e.g. 24.0°C

2. configuration parameter in piece e.g.: 1,0,-5,2,23,7

If the Publisher 2 sends changed data, these are to be taken over from Publisher 1.


IDE: PlatformIO VS code

Framework: Arduino/RTOS

The freelancer should be familiar with ESP32, WiFi, MQTT, SSL/TLS and WebSocket. Knowledge in Home Assitant for later projects is an advantage.

Færdigheder: Arduino, Indbygget Software, SSL, WiFi, MQTT

Om klienten:
( 17 bedømmelser ) Bad Camberg, Germany

Projekt ID: #35236147

Tildelt til:


Hey I have worked with all the topics covered in here. I recently made a greenhouse controlled with esp32 that was sending humidity, temperature and VPD via secure MQTT (flespi broker), the message was packed in json a Flere

€230 EUR in 14 dage
(1 bedømmelse)

9 freelancere byder i gennemsnit €170 timen for dette job


Hi there, I have read your project description and i'm confident i can do this project for you perfectly.I still have a few questions. please leave a message on my chat so we can discuss the budget and deadline of the Flere

€250 EUR in 5 dage
(84 bedømmelser)

Hi, Greetings...! I am intereted to work on your project. I am experienced with ESP32 and Mqtt Protocol. Looking forward to working with you. Thank you Shivkant

€250 EUR in 7 dage
(8 bedømmelser)

⭐⭐⭐⭐⭐I am senior Firmware & PCB Design,Java, C#,and C++ Developer ⭐⭐⭐⭐⭐ Hello I am Inigo H. I've seriously read your post and I have understood what you need. I am sure that I can be the best developer who can per Flere

€140 EUR in 7 dage
(3 bedømmelser)

Hi There....I will give you 25% Discount on my all services. Let’s get to the Project. Your Looking for a developer that expert in web node.js development. are you Looking for arduino Expert who write code for esp32 t Flere

€140 EUR in 7 dage
(1 bedømmelse)

Hello. i am an electrial engineer and i have a great knowledge about the arduino and esp32 . i can do this prject for you but i like recomend you nodemcu instead of mqtt . thankyou

€140 EUR in 7 dage
(0 bedømmelser)