MINI-RBS: Calibration Bug? Motor Always runs for 2 Minutes

Hi ilGaspa,

The MINI-RBS controls the curtain’s position using precise timing based on a percentage scale. For example, moving the curtain from 1% to 51% open runs the motor for half of the total calibrated time. However, because the motor takes a moment to start, it may not reach exactly 51%, stopping closer to 49%. This small discrepancy means the curtain’s position isn’t always perfectly accurate and can worsen if repeatedly stopped mid-position.

To ensure the curtain fully opens (100%) or closes (0%), we add a 2-minute buffer to these commands. This extra time guarantees it reaches its endpoint despite minor timing variations.

The motor usually has built-in limits that automatically stop it at fully open or closed positions. So even if MINI-RBS keeps the relay on, the motor stops itself—eliminating any risk of damage.

We realize this solution might seem radical, so we’re considering adding a feature that lets you customize buffer times for full open and close commands. What do you think? We’d love your feedback!