Integrating Shelly Plus 1 with Marantec CS300 Controller: A DIY Success Story

Hello everyone! I’m thrilled to share my recent DIY project with the Shelly Plus 1 and the Marantec CS300 controller. As a tech enthusiast and occasional tinkerer, I’ve always been fascinated by the idea of automating my home, and this project was a perfect opportunity to dive deeper into the world of smart home solutions.

My goal was to integrate the Shelly Plus 1 into my garage door system, which is controlled by the Marantec CS300. Initially, everything worked smoothly—opening and closing the garage door via the Shelly app or through voice commands. However, I wanted to take it a step further by incorporating the status of the garage door into my smart home setup.

The CS300 controller is equipped with various interfaces, including a built-in relay that communicates the door’s status. I hypothesized that this relay could be connected to the Shelly Plus 1 to send status updates. After some research, I stumbled upon a guide for a similar setup with a Hormann garage door, which used Flespi and tokens for integration. Though the guide was helpful, it didn’t quite fit my setup, so I decided to adapt the solution to work with my Marantec system.

The process involved connecting the relay from the CS300 to the Shelly Plus 1. After some trial and error, I managed to configure the Shelly to recognize the status signals from the relay. It was a bit challenging, but with the right combination of settings and a bit of patience, everything started working seamlessly.

Now, my garage door status is fully integrated into my smart home ecosystem. I can monitor the door’s state through my preferred platform and even set up automations based on whether the door is open or closed. This integration has significantly enhanced my home’s security and convenience, and I’m excited to explore more possibilities with my Shelly devices.

If anyone has questions or needs help with a similar project, feel free to reach out! I’d be happy to share more details or tips. Happy tinkering! :rocket: