B
Bill Baka
Guest
Chalo wrote:
> Bill Baka wrote:
>> Did you design the electronics and lay out a PCB?
>
> Nope. For controlled-current drive electronics, it's easier and
> cheaper-- and much more compact-- to use something like this:
> http://ledsupply.com/02009-sho.php (for 3V source)
>
> Or this:
> http://ledsupply.com/02012-d-350.php (for 12V source)
Cool site. I might not have even known about it but it looks like
somebody took the work out of my do it yourself project. Now I have one
more bookmark.
>
>> You sound like a budding engineer.
>
> I'm a machinist and prototypist by trade. I just left a private space
> program that I helped to start up in 2001.
Many "good" machinists are good at other stuff too. A good friend of
mine is a maintenance mechanic and is into electronics on the side.
>
>> Lithium is too expensive
>
> I've bought several 2400mAH lithium cell phone batteries for $5 to $6
> including shipping. As long as they keep letting cell phones go out
> of production, there will be a steady source of cheap lithiums and
> chargers in useful sizes for LED bike lights.
That may be due to the cell phone phenomena, but can work out for a
small bicycle, too. My Cateye may get Lithiumed.
Thanks, Chalo, that is good input.
Bill Baka
>
> Chalo
>
> Bill Baka wrote:
>> Did you design the electronics and lay out a PCB?
>
> Nope. For controlled-current drive electronics, it's easier and
> cheaper-- and much more compact-- to use something like this:
> http://ledsupply.com/02009-sho.php (for 3V source)
>
> Or this:
> http://ledsupply.com/02012-d-350.php (for 12V source)
Cool site. I might not have even known about it but it looks like
somebody took the work out of my do it yourself project. Now I have one
more bookmark.
>
>> You sound like a budding engineer.
>
> I'm a machinist and prototypist by trade. I just left a private space
> program that I helped to start up in 2001.
Many "good" machinists are good at other stuff too. A good friend of
mine is a maintenance mechanic and is into electronics on the side.
>
>> Lithium is too expensive
>
> I've bought several 2400mAH lithium cell phone batteries for $5 to $6
> including shipping. As long as they keep letting cell phones go out
> of production, there will be a steady source of cheap lithiums and
> chargers in useful sizes for LED bike lights.
That may be due to the cell phone phenomena, but can work out for a
small bicycle, too. My Cateye may get Lithiumed.
Thanks, Chalo, that is good input.
Bill Baka
>
> Chalo
>