MrJonesEducation

Thank you. Admittedly I haven't had the opportunity to try this in a classroom yet - but yes, children being children will probably revel in trying to get the Red Zone to light up, I was conscious of this. That's one of the reasons why the counter displays are a good addition because they could represent how many seconds/mins they lose from break or golden time.

There are 2 videos @ Step 4 and Step 8

In the video I just attached it using 2 small strips of double-sided tape (the foam type - not sure whether it has a proper name?), attached just to the top and bottom parts of the plastic cover underneath - it stuck very well, so well that I struggled to pull it off.

Thanks for sharing your expertise.

Yes, here in the U.K. up = off and down = on.

It's been interesting to hear everyone's suggestions for improvements, I think the idea of this build has gotten people's creative juices flowing, which has been great to hear.I'd love to see other incarnations of this idea.

Yes, that would be a nice touch.

Like this (image attached) - but will vary based on the spacings and the switch type etc.

I think you can buy them for the US switches (https://www.amazon.com/Frankenstein-Style-Switch-Plate-Cover/dp/B01GOH9UZS) - these aren't the same as mine, hence why I made one.

But doesn't the existing plastic covering act as that barrier anyway? - it's a cover over a cover, so to speak.

Thanks, admittedly it's just resting there. I was thinking it could be 'no more nails'-ed on or perhaps some strong double-sided tape. I haven't got around to this part yet.