Successfully Integrating Shelly Plus UNI with Rittor Doorbell

I recently embarked on a project to integrate my Rittor 7630 doorbell with the Shelly Plus UNI to create a smart doorbell system. While the initial setup was straightforward, I encountered a few challenges along the way that I’d like to share, along with the solutions I found. This might help others facing similar issues!

The Setup

I connected the Shelly Plus UNI to my doorbell system, aiming to monitor and control it remotely. The doorbell uses a simple signal system where voltage changes indicate when someone presses the button. My goal was to have the Shelly detect these voltage changes and send notifications to my smartphone.

Challenges Faced

  1. Voltage Detection Issues: Initially, I noticed that the Shelly wasn’t consistently detecting the voltage changes when the doorbell was pressed. This led to missed notifications and a frustrating user experience.
  2. Random Triggering: There were instances where the Shelly would trigger notifications even when no one was pressing the doorbell. I suspected this might be due to interference from the building’s bus system, as I live in a high-rise with many units.
  3. Configuration Confusion: I struggled with understanding how to properly configure the Shelly’s inputs to accurately detect the doorbell signals. The Shelly’s interface wasn’t as intuitive as I hoped, and I had to experiment quite a bit.

Solutions and Workarounds

  1. Double-Checking Connections: After some research, I realized that my initial wiring might have been slightly off. Ensuring that the IN1 and IN2 inputs were correctly connected to the doorbell’s signal pins was crucial. I also made sure the Shelly was powered separately to avoid any voltage fluctuations.
  2. Adjusting Input Settings: I discovered that tweaking the input sensitivity settings on the Shelly could help reduce false triggers. Lowering the threshold for what constitutes a “change” helped stabilize the system.
  3. Using a Second Shelly Unit: To get more detailed feedback, I connected a second Shelly Plus UNI to monitor the inputs separately. This helped me identify that the voltage readings were inconsistent, which led me to the next step.
  4. Firmware Update: Updating the Shelly’s firmware to the latest version resolved several quirks I was experiencing. The new firmware provided better stability and more accurate event detection.

Final Thoughts

While the process was a bit trial-and-error, I’m thrilled with the outcome. My doorbell now reliably sends notifications, and I can even control the doorbell remotely using my smartphone. If you’re considering a similar project, my advice is to:

  • Start with a Single Input: Test one input thoroughly before adding more complexity.
  • Experiment with Settings: Don’t hesitate to tweak sensitivity levels and firmware settings.
  • Document Everything: Keep track of your wiring and configurations so you can troubleshoot effectively.

If anyone has additional tips or遇到 similar issues, I’d love to hear your experiences! :rocket: