Think about a status LED - perhaps blinking means good - stuck on(or off) means bad

I did consider one or more LEDs when the project first came into being.
But, given that the user is blind, there is nobody to be able to see them! Perhaps we could train Yago, his assistance dog, to look and see if there is a light on...

In reply to Re^2: Continuous or timed? by Bod
in thread Continuous or timed? by Bod

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