% of close/open for roller shade is wrong...

[FredM67]

Hardware

ESP32-C3

Firmware version

v2.4.7

Application version

v2.4.7

What happened? What did you expect to happen?

They're 2 problems about the position of the roller shade.
To make the percentage correct, we'd need 2 additional timings:

• the time it takes until the bottom of the roller shade starts moving up. Most roller shade if not any can be fully closed (no light passes through) or with all the blades "expanded" (the light goes through the holes between the blades).
• the time it takes until the middle for example. Since the roller shade is rolled on a tube, even the angular speed of the motor is constant, the linear speed is not since the roller is rolled up on the tube which is then getting bigger (when opening) or (smaller when closing).

How to reproduce it (step by step)

It's somehow a bug (because the percentage is wrong) and/or a feature request (because we can live with it).

Logs

[Nickduino]

How would you differentiate between "fully closed" and "blade expanded", then if both are 0% (or 100%)?

• the time it takes until the middle for example. Since the roller shade is rolled on a tube, even the angular speed of the motor is constant, the linear speed is not since the roller is rolled up on the tube which is then getting bigger (when opening) or (smaller when closing).

But the angular speed of the motor probably isn't since the torque applied by the shutter on the motor varies.

Frankly, it has always bothered me a bit to see the value at 50% in HA and the blind not in the middle of the window...but I don't think you can solve it without making the thing less usable.

[shailensobhee]

Is it possible to integrate some sensor technology in the mix? Since there are extra GPIO pins on the board, maybe the HC-SR04 sensor could be used. For Terrace Awnings, it's probably great, since the sensor can be mounted.

Anyone tried that?