Tolsma-Grisnich approached us to develop dedicated electronics for climate control in storage rooms. Key requirements included real-time monitoring, high reliability and the ability to operate autonomously for years in a humid environment. General control solutions were not suitable because the electronics had to integrate seamlessly with Tolsma's own software platform and remain reliable across temperature fluctuations from -2°C to +40°C. For Tolsma, a short time-to-market was equally important, because seasonal product introductions leave no room for delays in development.

our approach.

We developed the complete embedded hardware and firmware for the TMU as a single integrated solution. The architecture is built around an RTOS core that processes real-time sensor data and controls connected components within tight timing constraints, fans, vents, heaters, and mechanical cooling systems respond within milliseconds. Special attention was given to the sensor interfaces: temperature via PT100 elements, humidity via capacitive sensors, and CO₂ via NDIR measurement. Development proceeded in short iteration cycles, with weekly alignment between our engineering team and Tolsma's R&D department. That pace of collaboration made it possible to incorporate design changes quickly without disrupting the overall project schedule.