DIY - Practicality Beats Perfection

I've had lots of emails from people making a DIY light hat from the blog instructions. The tricky part is finding the best red LED strip.

670nm is hard to come by, as is 660nm.

The tendency is to stop work on the light hat, on the basis that it can only be made with the best possible LED strip.

Wrong approach!

The best thing is to get any old red LED strip and make a light hat as soon as you can and get it on the suffering head every morning - as soon as you can.

Then, and only then, start hunting for the elusive 670nm LED strip. And when you find it, make another light hat with the new LEDs. And give away your first one - there is always someone who can put it to good use.

It is far more effective to have red lights on brain than it is to have no red lights. Every day counts.

And remember - the Cossack is a far better design than the bucket Eliza.