how to DIY undercarridge LED light?

[sonictheory]

i got the 12v LED thingy which meant to install at undercarridge car like neon... i try to read thru neon thread, but i found out there's still soemthing diff like ballast, i dun think the LED nit it rite?..so dicide to open new thread...how am i going to do the wiring?...i want to have switch to be turn on or off whenever i like....and on when i open my door....can this be done?...where should i link my cable?....anyone help?...where can i buy the switch aswell?

 

[SkYwAlKeR]

since u already got 12v LED, u can directly wire everything up in series or parallel connection....

remember add a fius at the positive terminal, jz incase of short circuit...

i planning to do so as well... but using 3.2v LED (normal rm1 LED sold in electronics shop)... need to add resistors and so on... hehehe...

btw, mind sharing how u gonna waterproof ur LEDs??...

 

[khguan]

muahahaha... LED undercarriage?? i have ideas.... been thinking for a long long time... no time to do it yet.... for now still top secret....

 

[shar peye]

i planning to do so as well... but using 3.2v LED (normal rm1 LED sold in electronics shop)... need to add resistors and so on... hehehe...

how much resistance do i hv to add to the 3.2v LED if i wanna connect it to the 12 10w supplies?

 

[khguan]

1K ohm will be good....

 

[sonictheory]

khguan, dun mind to pm me the diagram?...i wanna try diy..duwan let shop do lah ...scare expensive loh....

 

[mivecmerah]

hehe....want tio do also..but i think better u all done it first...good luck man..

 

[kelvin---]

khguan...just some noob questions...r neon wirings the same like car audio wirings? which is like one wire from the battery...then to a switch..then to the lights...and another wire to the body of the car?

 

[khguan]

eh.. gimme sometime... later i post the pic of the prototype... without any casing yet.... no need diagram... the pic will tell u everything... :)


kelvin,
yes.. for most car accessories... there will be 2 wires +ve n -ve... +ve connect to switch to battery with fuse... n the -ve wire just connect to car body (ground)

 

[wyx]

guys, b4 we talk abt resistors value, fuse, etc, need to know 1st how many LED u intend to use, and what kind of LED as diff LED type consume diff amount of current.

 

[SkYwAlKeR]

guys, b4 we talk abt resistors value, fuse, etc, need to know 1st how many LED u intend to use, and what kind of LED as diff LED type consume diff amount of current.

yeap... he has a point there... must know what LED u are using... the LED using what forward voltage and forward current.... plus, must consider how u wanna connect them... parallel or series??....

khguan, remember post ur prototype... haha... i'm going to do mine as well lor... sem break has jz started, everyday rust at home, better find something DIY stuff do....

 

[khguan]

i have been bz with my DIYs lately... i forgot to take pics...

i'll post soon... sorry guys..

 

[donCityZ]

I did LED before.

need to know:
1. Forward voltage. (normally 3.5V if RM1 at elec shop)
2. Typical Forward current (normally max 30mA.. so set around 20mA enuff).
3. Total of PARALLEL LED (series is not good for brightness - some will be dim, some will be too bright - not even brightness).

gimme those detail, i calculate 4 u, 4 free, with schematic and all. hows that?

 

[khguan]

ok.. as promised... the pics of the LED Strip i made... havent make the casing n stuff... no time to do it yet... but with this... u can make lots of things already...

http://img348.imageshack.us/img348/46/img69567zh.th.jpg http://img348.imageshack.us/img348/1640/img69586os.th.jpg

 

[khguan]

yah... u need to get the same specs of LEDs so that they light up with the same light intensity.... test it with a 3V supply to ensure they shine the same brightness b4 soldering onto the veroboard...

u can extend it longer by connecting more strips in parallel....

 

[chilskater]

can we 'reused' the LED(14LEDs) lampu picit as spot light?example..we take 2 lampu picit and stick together in fibreglass mould..

 

[SkYwAlKeR]

can we 'reused' the LED(14LEDs) lampu picit as spot light?example..we take 2 lampu picit and stick together in fibreglass mould..

sure can... as long as the LEDs arent burned... hehe...:_:

 

[khguan]

can... u wanto use as spotlight... get those 21 LEDs torchlight... better... 14 LEDs dun seem bright enough for driving purposes...

but make sure u get the right input voltage to the torch light...

 

[kk9972]

since u already got 12v LED, u can directly wire everything up in series or parallel connection....

remember add a fius at the positive terminal, jz incase of short circuit...

i planning to do so as well... but using 3.2v LED (normal rm1 LED sold in electronics shop)... need to add resistors and so on... hehehe...

btw, mind sharing how u gonna waterproof ur LEDs??...

Connect your fuis at ur battary rather than inside the car. if connect ur fius inside the car, short circuit will burn the wire.

 

[shay]

khguan, hows the progress of ur LED?
Plz let us know the spec.