DIY LED Signal (UPdates page 4 brake light)

[hi_sham32]

This is my relay.

All my signal is bulbs. Its 12v 10W x4.

If idling, my signal like dying.

 

So if i want to change the bulbs to led's like T10, must change the relay and add resistor?

 

http://i814.photobucket.com/albums/zz61/hi_sham32/IMG_1051.jpg

[limbat]

We have jus finished testing 2 samples Digital Flasher relay - for use with LED Signals bulbs only. These units will solve the common problem of fast blinking when u change all your signal bulbs to LEDs.

 

Now we test if they will also cancel the warning system in a car.

[Limsteel]

I have made one with 555 IC chip following this circuit...It works. but I didn't implement as my blink relay and side stand relay is 1 piece.

 

http://www.electronics-project-design.com/images/LEDFlasherSchematic.GIF

[adesmond2]

We have jus finished testing 2 samples Digital Flasher relay - for use with LED Signals bulbs only. These units will solve the common problem of fast blinking when u change all your signal bulbs to LEDs.

 

Now we test if they will also cancel the warning system in a car.

 

bro... how much?

 

so that i can change my remaining bulbs to LEDS!!

[limbat]

bro... how much?

 

so that i can change my remaining bulbs to LEDS!!

 

These 2 units are pro-to type - I will let u hv 1 unit for testing - I still need to test them for car warning canceller b4 puting them into production... pls call I will be traveling soon .............

[at0m87]

Wow this thread goes way back..

 

anyway i have succeeded on making a flashing circuit either for your signals or for strobe brake lights(those u see on huge trucks) probably for hazard lights too...

 

i have not implemented them onto bikes yet thou but i believe the flashing circuit can replace the the relay totally and the blink rate is adjustable.

 

the photos attached is one of the prototype i made, using those cheap leds which i have many. using the 555 Timer IC in the astable mode which self triggers it self to produce continuous pulses (which translate to the flashing u see on the leds). one resistor limits the current to the leds while the other resistor+pot-resistor+capacitor controls the flashing rate.

 

i am very satisfied with the final outcome of the flashing but using so many leds = alot to solder.. but it was a prototype and i had fun DIY-ing it. i have on hand those red superflux leds, which are alot brighter (need sunglasses), i can start on next; maybe making a strobing 3rd brake light for my revo (alredy have led brake lights so no point modding it) instead.

[adesmond2]

These 2 units are pro-to type - I will let u hv 1 unit for testing - I still need to test them for car warning canceller b4 puting them into production... pls call I will be traveling soon .............

 

OMG!! I miss your post!! Arrgg.. Have to call you on this weekends.. let's hope you still in Singapore..

 

Wow this thread goes way back..

 

anyway i have succeeded on making a flashing circuit either for your signals or for strobe brake lights(those u see on huge trucks) probably for hazard lights too...

 

i have not implemented them onto bikes yet thou but i believe the flashing circuit can replace the the relay totally and the blink rate is adjustable.

 

the photos attached is one of the prototype i made, using those cheap leds which i have many. using the 555 Timer IC in the astable mode which self triggers it self to produce continuous pulses (which translate to the flashing u see on the leds). one resistor limits the current to the leds while the other resistor+pot-resistor+capacitor controls the flashing rate.

 

i am very satisfied with the final outcome of the flashing but using so many leds = alot to solder.. but it was a prototype and i had fun DIY-ing it. i have on hand those red superflux leds, which are alot brighter (need sunglasses), i can start on next; maybe making a strobing 3rd brake light for my revo (alredy have led brake lights so no point modding it) instead.

 

nice one!! good!

[at0m87]

you guys are looking for 3 pin led signal relay? if you need PM me..

[at0m87]

i used the same circuit and change the leds to the superflux ones. and notice the 555 IC actually has a very limited current output; so it isnt providing enough current for the 70mA leds. i am lost now, cos i need to use my voltage regulator to regulate 5V input then 555IC for the strobing effect end up my voltage drop to 4V from the 555IC and the current drop tremendously too. any one can help me think of any way to make this work with the 70mA leds? i was thinking using a transistor to pull up the current(current amplifier), will it work?

[hi_sham32]

Wow this thread goes way back..

 

anyway i have succeeded on making a flashing circuit either for your signals or for strobe brake lights(those u see on huge trucks) probably for hazard lights too...

 

i have not implemented them onto bikes yet thou but i believe the flashing circuit can replace the the relay totally and the blink rate is adjustable.

 

the photos attached is one of the prototype i made, using those cheap leds which i have many. using the 555 Timer IC in the astable mode which self triggers it self to produce continuous pulses (which translate to the flashing u see on the leds). one resistor limits the current to the leds while the other resistor+pot-resistor+capacitor controls the flashing rate.

 

i am very satisfied with the final outcome of the flashing but using so many leds = alot to solder.. but it was a prototype and i had fun DIY-ing it. i have on hand those red superflux leds, which are alot brighter (need sunglasses), i can start on next; maybe making a strobing 3rd brake light for my revo (alredy have led brake lights so no point modding it) instead.

 

Wah, bro, i love ur DIY... Me love to DIY, but can't afford buying those 96 LEDs... Keep doing it bro...!

[at0m87]

some updates.

 

as previously mentioned, i had problem drawing enough current, to supply to the 70mA LEDs, from the 555 Timer. well good news i have finally managed to cross this barrier and managed to get sufficient current to light up these LEDs. the transistor worked, which act as a current amplifier as well as well as a constant current source.

 

good thing about this circuit is that the voltage will not be fluctuating at some +/- voltage but instead fixed at 5V(fixed voltage can be adjusted to needs). also a constant current source is better that a current limiting resistor as no current is burned away as heat. both this are in placed to ensure longer lifespan of the LEDs.

 

i am still experimenting on the different transistor to use as with the current one, it is still unable to draw 70mA for the LEDs to light up fully, but for a start i at least have 40mA alot better than previously without the transistors.

 

some demo of the LEDs in play

sorry this one the quality a little bad. i think the LEDs were blinding the camera sensors or my canon is lousy.

 

next problem is to find a proper enclosure for the LEDs and a proper switch to mount on the handle bar. anyone has any suggestion/recommendation?

[at0m87]

Wah, bro, i love ur DIY... Me love to DIY, but can't afford buying those 96 LEDs... Keep doing it bro...!

 

Thanks. the 96 LEDs were the inexpensive normal LEDs. the one i am using in the current project are the middle range superflux leds below $2 each and brightness wise, even my oakley sunglass which can block out the bright sun cannot block out the powerful glow from the LED - still get temporary blindness from staring at it. the video above is using only 2xLEDs, imagine 10LEDs.

 

more expensive ones are those that requires heatsink - that is superbright. but to me bright is one thing, covering a larger is my main purpose. i dont have the budget to buy so many superbright ones to cover big areas. so this superflux which are bright and cheap serves my purpose.

 

its nicer to see a row of LEDs rather than one big bright one eh?