Shutter close sensor does not operate correctly if triggered multiple times

[NameOfTheDragon]

In normal use, we expect to see a single activation of the close sensor and in most domes, this appears to be the case. However there has been at least one case (Sylvain Lefebvre) where the close sensor appears to trigger multiple times, resulting in the close operation not stopping.

The mechanism is not fully understood, but during troubleshooting via Facebook, Sylvain was asked to remove the close sensor magnet and then the shutter did close and stop correctly.

So there is definitely a hardware component to this issue, but there is also a firmware component. When closing the shutter, multiple activations of the close sensor should be idempotent. The firmware needs to be improved in this area.

[NameOfTheDragon]

Here's a link to the Facebook conversation where we partially diagnosed the issue. The thread includes a video of the problem happening.