Info Manual: led flashers

Showing posts with label led flashers. Show all posts

Tuesday, October 20, 2015

Brake Light Flasher

Wanting to have a module that works like this, Two or three flash then steady of your rear light when you press your brake to alert behind you that you are entirely braking or stopping, then you got to this site, Introducing the third brake light system module that is connected in series with your existing brake light wiring to have this kind of an add on to your brake light indicator.

Universal Electronic Signal Flasher for Motorcycles

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To use light emitting diode or LED in your motorcycle, ordinary thermal flasher wont work due to the high resistance of led, and that it needs to have a load resistor or dummy load in order to flash leds, which means a power waster. Many light enthusiast of course didnt understand this that after replacing their signal bulbs to all leds, it didnt blink or blink too fast. Solution, A Universal electronic led flasher.

Figure 1. is a solid state two wire led flasher that will flash even a single led without the use of load resistor. It is so versatile and will prove useful in any number of circumstances. The circuits scales from micro amps to amps and from microseconds to minutes.

The on time may be increased by selecting other values of the 10k ohm resistor of the 2n4401 npn transistor as long as the resulting base current is sufficient to saturate that resistor.

Integrated TAIL/Brake, signal lights

Ever seen a ford expedition with just a full REAR red lights where a signal, tail and brake lights are done by those RED lights. They are called INTEGRATED rear lights and can be done on motorcycles too. Take a look at the video. This was the very first version of my diy works with my bike a long time ago, to where my signal lights tail lights and brake lights are compose with just an array of led at the rear.

Circuit:

I used this circuit posted led-brake-light This will be your TAIL/BRAKE light controller, it needs two of this for left and right led array assembly. to incorporate the SIGNAL lights on this circuit, we have to use two 12 volts miniature relay.

two of this single pole single throw relay will be used to switched the negative line of the led array on the circuit above. The NC or normally closed pins will be used. Look at the modified schematic below.

Cut the negative path of the led array from the driving mosfet and wired it to the normally closed pins of the relay so that when powered on the path of that negative pin of the array is still connected. And when you turn on the signal lights, the relay will be activated thus cutting the line of the led array producing a flashing effect on your integrated rear lights. This circuit by the way will be on all the time, that when you on the ignition switch, your tail light must be on so that the rear signal lights function during day time.

Part list:

D1-D2= 1n4007
ZD1= 15volts /1watt
ZD2= 9-14 volts / 500mw
L1=22uh
C1=15uf/35v
R1 / R4= 10k ohms
R2 = 1.3 ohms
R3 = 16.1 ohms
R5 = 2.2k ohms
VT1 = 2n3904
VT2 / VT3 = mtp3055e (mosfet)

for signal lights add on

RL1 / RL2 = 12 volts miniature pcb relay