(Ok, here he comes again with another crazy idea…LOL)
Last night I went to see my 4 year-old grandson “race” his go kart at a local dirt track.
This track is a recent startup by a local family and they’ve been working hard to improve it. During the races between the big boys, I noticed a couple things that I think would be pretty easy improvements—and with today’s tech can be more affordable. First—lighting on the track was pretty dismal. That’s fairly easy—install more lights. Second—the Caution flags. Two guys with flags along the track and the flagger. I’m thinking about some flashing yellow lights on the fencing situated about every 100 feet or so. Hit a switch and turn them on and off. (Much safer way of letting drivers know more quickly.) I’m wondering if some cheap solar fixtures could be used and all triggered wirelessly? I’m sure it can but don’t know enough about what’s available that could make it easier and affordable. (Again, family owned and not a lot of budget so far)
Thanks for any ideas.

 

Amazon has afew types of remotes, not sure if the range is suitable?

 

A Google of 4 Channel wireless relay card will bring up a dozen like suggested above. The ones I have are good for over 300 feet (a football field). They are 12 Volt so a few SLA batteries and you are in business.

Ron

 

https://www.amazon.co.uk/QIACHIP-Tr...2lkZ2V0TmFtZT1zcF9waG9uZV9zZWFyY2hfbXRm&psc=1

These work really well for me. 433MHz is licence free in the UK, other sub gigahertz frequencies elsewhere. There are two modes, toggle mode is probably best for your application, to go on with one button press and go off when you press again. Range best with 17cm straight antennas but the coil antennas supplied may suffice. I’d suggest using rechargeable batteries rather than solar for a more reliable solution