Bike headlight displays speed


51 Responses to “Bike headlight displays speed”

  1. jandrese says:

    That is fantastic.  The pi could probably even overlay a map on the road and do realtime directions.  I’ve always thought that those little battery driven projectors were useless, I’m glad to be proven wrong.  

  2. unicornrainbow says:

    So it doesn’t work in the day time?

    • mccrum says:

      It works, you just can’t see the light on the ground.

    • jandrese says:

      Since it uses one of those little battery powered projectors, no.  I’m a little surprised it works as well as it does on lit city streets.  Those projectors are really crap. 

  3. Gilbert Wham says:

    OOOO! Bike post!
    *gets popcorn*

  4. tylerkaraszewski says:

    They already have handlebar mounted GPS for bikes, and handlebar mounts for smartphones. I mean, I get that this guy wanted to build it himself, but this seems strictly less practical.

    • mccrum says:

      Everyone, stop making things!  It’s much more practical to just consume!

      Whew, close one there.  Someone almost taught themselves something.

      • Robert Drop says:

        While this is a pretty cool project, the pico-projectors I’ve seen cost as much as a bike GPS all by themselves.  There’s a whole lot of consuming going on there.

    • Ray Perkins says:

       His project is cool, and all, but I don’t see an advantage over a regular speedometer. Other than maybe not having to re-focus your eyes as much.

      • oasisob1 says:

        How about the advantage of having made something and having become smarter about making along the way? Seems pretty practical to me.

  5. Roose_Bolton says:

    If he can make it so that it throws a hologram about 5-10 feet in front of the bike of someone frantically running away while looking over their shoulder, I’m in.

    • jandrese says:

      The Pi is more than capable of playing videos, so that’s not too hard to do.  Making it not look bad by keeping the video synced with the ground passing underneath would be pretty tricky, but the basic mode should work fine. 

  6. thekinginyellow says:

    seems like a distraction…like driving and texting.

    • SamSam says:

      Or like a speedometer.

      Those things are illegal, right?

    • oasisob1 says:

      I was going to say it needs connection to cell and wireless keyboard for texting.

    • thekinginyellow says:

      seriously though. after watching the video it looks like he’s having a hard time operating the bike because he’s watching the display. this would be cooler if it were on some sort of HUD on a helmet or glasses so you don’t have to take your eyes off of your environment.

  7. Cowicide says:

    This makes me want to have a rear camera and have this thing show me blinking red squares of cars approaching from behind.  It could detect the headlights at night (and the shape of them during the day).

    It could also figure out the speed in which the car is approaching and put that number beside it.I guess it’d look something like this…  take my money.

  8. pitkataistelu says:

    Dude, you’re weaving like an inebriated clown!

    • dragonfrog says:

      I know, right?

      Hand signals for turns?  Sissy stuff.  Hand signals for lane changes?  Faugh.  Shoulder checking before merging?  Where’s that at?

      At least all the traffic, including the bike, were going nice and slow.

      • TheOven says:

        In NYC they don’t have traffic “laws” as such, just traffic “suggestions”.

        • Gilbert Wham says:

           I live in England, where we have a MUCH harder driving test, and I check my six constantly, cos people are still idiots.

        • Antinous / Moderator says:

          Like Boston, where they have Whichever One-Way You Happen To Be Going streets?

      • Itsumishi says:

        How did you know he wasn’t doing shoulder checks? Judging by the angle the 1st person shot was taken at the camera was mounted on a shoulder or to his top somehow. Also the weaving seemed mainly to do with getting out of the way of the car behind.

        • dragonfrog says:

          Anyone riding like that is not shoulder checking.

          Given how slowly the cars were moving, there was no need to get out of their way anyway – just move at the same speed as other traffic…

    • Navin_Johnson says:

       I wouldn’t insult him like that, but I thought this was weird too. He seemed to be weaving back and forth into empty parking spaces and then back into the riding space between traffic and parked cars which is where he should just stay. If something blocks his way or it gets to tight then he needs to “take the lane”.

  9. What a cool use of a raspberry pi! It seems like once something like Google Glass becomes more mainstream though, this will be obsolete as Glass works in daylight and is directly in your field of vision so you don’t have to look down at the street to see it.

  10. pjcamp says:

    4? Geez, man, eat your Wheaties!

  11. CliffStoll says:

     Ouch – wearing a black jacket and dark jeans while biking at night?  Dodging traffic up close?  Gives this urban cyclist the heebies.  Or maybe the jeebies…

      What I’d like to see (and would be a delight if Matt could create) is a wearable vest that displays big bright messages using a matrix of leds.  I imagine programmable flashing bars, stars, letters, or a message for the car behind me.  Make the vest orange so it’s visible in the day, and interwoven with 3M reflective material, so it’ll show up in headlights even when its batteries are dead.

      Hmmm – maybe I’ll hack something together…

    • Itsumishi says:

      Yeah! Cycling is too dangerous to be enjoyed by the masses! Let’s force people to wear absurd safety gear or make them feel like they’re engaging in something akin to snowboarding off a cliff.

      Seriously, cycling in most cities, day or night simply isn’t that dangerous, this idea that all cyclists must wear reflective vests, etc. does nothing but reenforces the idea that cycling is a fringe activity not worthy of serious consideration by governments or the general public. If you’ve got lights on, you’re doing ok.

      • Navin_Johnson says:

        He just needs to get a blinking white front light and blinking red rear light. Giving him the benefit of the doubt perhaps he has them and didn’t want to distract from his demonstration. Lights are very necessary even in bright cities. As a cyclist I’ve almost hit other people on bikes I couldn’t see who didn’t have lights. Lights are kind of a no-brainer. As far as covering yourself in reflective material, I agree that’s not as necessary.

  12. John Irvine says:

    It should be set up to project David Byrne’s face.

  13. This is very cool – I’d think it would be fun to implement in software on an iDevice or Android phone rather than hauling an additional processor and battery around. Of course, I may be biased as I already use my iPhone as a bike computer for speed/cadence/HR…

    Are there any ruggedized and wireless pico projectors out there?

  14. disturbed says:

    back-up with Solar power or use some sort of chargeable unit, so you are not having a high budget on battery usage.  

  15. Spencer Brown-Pearn says:

    So…what are the assembly/disassembly times associated with not wanting someone to steal your projector, etc every time you need to get off your bike and can’t take it inside with you?

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