Jan Diener

As the lead developer at TinySpaces, I am responsible for the conception, programming, and optimization of an intelligent climate control system based on ESP32 microcontrollers.

I develop both the firmware and the web interfaces for controlling heating, ventilation, and cooling – including sensor technology, relay control, control logic, and communication interfaces (ESP-NOW, MQTT, RS485, CAN bus).

My responsibilities include:

Development and documentation of the entire control logic (heating, cooling, frost protection, circulation, etc.)

Building a stable system architecture with multiple ESP nodes (e.g., DialESP with rotary encoder & display + RelaisESP as control center)

Designing user-friendly web interfaces for parameter control

Implementing automatic updates, pairing processes, and secure communication

Testing, debugging, and ongoing development for production-ready products

The project's goal is a compact, modular smart home system that combines comfort, energy efficiency, and ease of use – "from the screw to the smart home – I make it simple."

As Head of Development at Pundmann, I am responsible for the conception, programming, and further development of the BoilerControl system – an intelligent, networked control system for hot water and heating systems based on ESP32 technology.

I develop both the firmware and the web interface, giving users full control over their boiler:

Heat with solar energy, use heat efficiently, or heat only as much water as you actually need.

My responsibilities include:

Development of the control logic for boiler, heating, and frost protection functions

Building the communication architecture (MQTT, Wi-Fi)

Implementing secure OTA update and maintenance mechanisms

Designing intuitive web interfaces for monitoring and control

Technical documentation and optimization for series production

The result: A modern, energy-efficient, and smart boiler control system that intelligently combines technology and sustainability.