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  1. M

    External Connectors

    I used to use Tamiya connectors. They are cheap and easy to use, but I have had complaints from of few of my test subjects ... err I meant pilots. I've used them on my own bike for over 2 years and only had a few problems with them, nothing that a quick twist of the cables couldn't fix. For...
  2. M

    Any ideas/success in shielding interference for wireless bike computers?

    The term you want to use is EMI (electro magnetic interference). The DX drivers have nothing to address it since they are typically used in a metal faraday cage (aka your flashlight). Try 2 capacitors across the driver. One largeish one, say 10uF to 100 uF. Tantalum caps work best but can be...
  3. M

    Suggest PIC programmer/development kit

    The Atmel ATTINY series parts are nice. An Atmel Dragon programmer/debugger can be had for around $50. And that includes a debugger offering breakpoints and single step debugging. Nice for only $50. The AVRStudio IDE is pretty decent and I've been very impressed with the GCC optimizing C...
  4. M

    is it just me - or where can I get a red emitter with lumen >150 ??

    Look at the Osram diamond dragon. You can find them in red or amber. The amber (625 nm) looks pretty close to the wavelength of luxeon III red (627). I suspect they look red. They should be a useful replacement for the discontinued luxeon IIIs, of course you'll need different optics. The...
  5. M

    hot glue ok for driver?

    Hot melt glue works pretty well for heatsinking drivers that don't get hot enuff to re-melt the glue. You can waterproof your driver as well as provide a path for heat, by gluing the driver to the side of the enclosure it's in, and then just cover all the components on the driver. Some folks...
  6. M

    Questions about Dinotte

    Look at buying one of these: http://ledsupply.com/lxhl-lh3c.php The dinotte is probably current driving the LED. Most single emitter white LEDs top out around 1 amp, so I doubt it will put out enuff to fry a Luxeon III. Not sure if the star will fit. If you buy the LED not mounted on a star...
  7. M

    Need 10AA battery holder for 14.8v light- iBlaast II

    You should look at mouser. For example: http://www.mouser.com/Search/ProductDetail.aspx?qs=rv4VsMQCxnCbQF9ikrTzNQ%3d%3d But 10 AAs would give you 12 volts if you use NiMh or NiCad. If you want 14.8 volts, you'd need a 12 cell holder, and I don't know of anyone who makes those. Mark
  8. M

    MC-E Dynamo Light

    Looks like a pretty nice light. The pictures and video make it look like it has a strong center spot with a fairly wide sidespill. Do you get any artifacts in the central spot from the 4 dies in the MC-E? When playing around with the P7 earlier this year I found I'd get a plus sign pattern in...
  9. M

    Problem with KD Super P7 Driver

    The driver IMHO is designed to run in a flashlight for only a few minutes at a time. Fire one up sometime and hold your finger on the stack of current sense resistors on the bottom (the are labeled something like R250 for .25 ohms). These are 1/8 watt resistors that are having something like...
  10. M

    What do you think of my custom light plan?

    Well your idea might work. It kind of depends on what kind of driver the flashlight from DX has in it. The range on the driver and the batteries they mention as working makes me a bit skeptical. If the driver is resistor based (or uses an amc7135 driver chip) it will get pretty hot driving a 3.6...
  11. M

    Desperatly looking for driver (updated kennan driver?)

    So I finally tried removing IC1, R7 and R5 (if you pull off IC1 and R5 you don't need to bother with R4), then I shorted out R6. Everything seems to work fine. But I noticed something different. With R1 set at .200 ohms, the driver drives the LED with about 1 amp of current. So the LED runs a...
  12. M

    Desperatly looking for driver (updated kennan driver?)

    I got some of the new Kennans with IC1, R4, and R5, but no R6. The extra parts make the driver shut down for input voltages below 6.2 volts. My guess is these parts are designed to shut down the driver when 2 Li-Ion cells driving it get below their safe operating voltage. It seems you can...
  13. M

    Will this 20mm holder work with Carclo optics?

    In my experience, carlco lenses (purchased from future electronics) kind of work with ssc l2 holders (ordered from led supply). I was using lenses meant for use with luxeon rebels. The lenses fit, but seemed a bit loose. I tend to seal everything up with epoxy, so the loose fit was not a big...
  14. M

    Drivers are Kaidomain and DealExtreme help!

    ZeroEnigma, Do you have the LEDs wired in series or parallel? If in series, then I might be wrong about this being a buck regulator. 2 x 3.6 = 7.2 volts for two SSCs in series, and the only way to run that off of 4.8 volts would be to use a boost regulator, or wire the LEDs in parallel. I...
  15. M

    Drivers are Kaidomain and DealExtreme help!

    For buck converters it depends on whether the converter senses current thru the LED on the high side (between the battery and the LED) or on the low side (between LED and ground). The DX and Kaidomain drivers I've looked at sense current on the low side. Connecting one side of the LED to ground...
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