What Have You Done To Your Tdm Today?

[fixitsan]

Would a pulse width modulator do the job? You can buy ready made ones for a few quid.

 

 

In theory it would work great, BUT, the frequency of operation needs to be adjustable and suitably slow.

 

If you want to flash an led at 15Hz,no off the shelf brightness or motor speed controllers run at such low frequencies, so it would require modification.

 

I spoke with a manufacturer of a brake light modulator last year regarding my coloured dancing pattern disco hand guards with indicators last year (vid below) and they were not interested in marketing anything which caused front lights to flicker, flash or change colour. Since then I've found that the law is not completely watertight, and if the light flickers down to 40% brightness instead of completely off then they are, technically speaking, not considered to be flashing on and off.  No test cases have gone through courts yet though !

 

 

https://www.youtube.com/watch?v=GZN9cW97fHM

 

 

From the work I did i found that the very best effect is when there are two leds, one each side of the bike, and they flicker alternately side to side at 16 or 17Hz....the eye's ability to recognise movement is triggered by the perceived change in position of the light source, which is very noticeable and attention grabbing  in your peripheral vision

This post was last modified: 08-07-2017, 08:39 AM by fixitsan.