More LED lights

So, I know I suck at updating this blog .. But frankly I haven't been in the mood for projects for a long time.
Here is one of my latest projects though!
It's a 3x7W LED light for my piece-of-shit pitbike that I got dirtcheap..

The top 2 are aimed higher up than the single one to give a bit better throw.
It'll be mounted up on the fork with batteries placed somewhere within the frame hopefully, I'll also need to install a voltage regulator to charge them, hopefully the bike supplies voltage from somewhere as I haven't bothered to check that crucial piece yet...
Still ways to go on making this thing pretty.

 

Got 3 modes: 7, 14 and 21W.
Cycles through the mode with the push of a button.

 

And finally a pic of the pitbike itself, a 1 cylinder 125cc 4stroke.

4 gears manual and specified to have ~10hp(which is probably like 6-7..)

Later!

Bike season is drawing near.

And with it comes some difficulties, like navigating dark roads ... So I figured I'd solve it with LED's..
2x5W power LED's in a box with optics, batteries and a simple resistor setup to limit the current flow.
A simple on/off switch is placed up on the handlebars, I should probably change this to a high/low setting later on.

This is the lighting at around 7.25W, still some way to go to maximum and I have plenty of flow, I do plan on changing one of the lenses to something with a better throw, that way I can get both angle and length on the beam.

 

Peace out.

LED handlamp

Not exactly a recent project but decided to post it anyway.

It's essentially an array of 45 high-output LEDs, current limited with resistors and on/off by a simple switch.

As simple as it can get.

 

 On addition to this veroboard schematic is the battery composed of 8 AA/R6 batteries and the little switch.

Oh and .. It's effing bright.

Nightlight

Microproject this time, still waiting for a good projectile tube for the coilgun..

Either way, I got annoyed with not being able to see my analog clock at night and instead of choosing a sensible solution I decided to have a LED light it up.
At the same time that I have this low-current LED as light I don't want it to waste battery power by being on 24/7 so it needed some kind of on/off circuit.

First few ideas were based around the clock itself, to have it as a timer and manually set when to light and not, I quickly deemed this as unnecessarily complex for such a small project.

This lead me to the next, final, idea: Light control.
I'm using a phototransistor to 'measure' the light and then decide if the LED should be lit or not. The circuit got a draw of ~3mA(As far as I can measure with my budget multimeters) when lit and in the µA range when not lit, this should give quite a good battery life even on AAA batteries.

The entire circuit consists of 5 resistors, 2 transistors and a phototransistor and has so far been tested on breadboard and in Proteus. I'll solder this together whenever the mood strikes me.

Here's a schematic 'til I get it soldered together.