justDIY
Active Member
Hey all!
Long time no post ... I've been idle in the electronics hobby for a while now, but recently revived a project from last year.
This is a bicycle taillight powered by an lm3410 boost converter and three AA batteries. The led array is comprised of 28 superflux leds, running at 50mA ea (200mA array total). A PIC 12F683 µC provides for different strobe modes and a power-saving standby.
In the future I will add a tilt switch to the pic so it can detect motion and automatically power up / power down the leds.
Run-time is really great - my latest test left the light running for eight hours, and according to my charger, that had drained ~2300mA out of the batteries. So I might be able to get nine hours total. My avg bike rides are only 2-3 hrs, so a set of batteries should last several trips before needing a recharge.
**broken link removed**
More details, pictures and video can be found on my blog!
Long time no post ... I've been idle in the electronics hobby for a while now, but recently revived a project from last year.
This is a bicycle taillight powered by an lm3410 boost converter and three AA batteries. The led array is comprised of 28 superflux leds, running at 50mA ea (200mA array total). A PIC 12F683 µC provides for different strobe modes and a power-saving standby.
In the future I will add a tilt switch to the pic so it can detect motion and automatically power up / power down the leds.
Run-time is really great - my latest test left the light running for eight hours, and according to my charger, that had drained ~2300mA out of the batteries. So I might be able to get nine hours total. My avg bike rides are only 2-3 hrs, so a set of batteries should last several trips before needing a recharge.
**broken link removed**
More details, pictures and video can be found on my blog!
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