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shreyasma · 22nd February 2009, 22:23

I went shopping and ended up buying 100x10mm white LEDs and !00x520 ohms resistors and 5xuniversal PCB (2inchx3inch)

Price:
Rs 2.75 per LED
15 paise per resistor
Rs 5 per PCB

I am no electronics guy. I went to this shop on SP road in Bangalore and just asked for LEDs thinking i will connect in series. But the shop keeper was keen on knowing what i was upto as he till date never had a person buying only 100 pieces. reson being he was a wholesaler. When i explained the DIY plan, he suggested me to use 520 ohms resistor with each LED as the brightness will be uniform. Made sense to me as he was earning only Rs15 for 100 resistors.

Okay, Brought the stuff home and also purchase a soldering kit for 50 bucks from the same guy. First tried my hand at soldering and was feeling confident. Then planned the way i needed the lights. Also used a sand paper to make the LEDs rough as the light looked like a spot light that a wide spread one.

Note to all electronics guys: You may puke looking at my circuit diagram and the way i have soldered.

Here is the circuit diagram.

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Name: untitled.JPG
Views: 416
Size: 10.4 KB

Rest of the pics are self explanatory. I did the same for the Tata safari roof lights and the number plate light also. Will post the pics later

22nd February 2009, 22:23	#86 (permalink)
shreyasma BHPian Join Date: Jan 2007 Location: Bang! Posts: 594	I went shopping and ended up buying 100x10mm white LEDs and !00x520 ohms resistors and 5xuniversal PCB (2inchx3inch) Price: Rs 2.75 per LED 15 paise per resistor Rs 5 per PCB I am no electronics guy. I went to this shop on SP road in Bangalore and just asked for LEDs thinking i will connect in series. But the shop keeper was keen on knowing what i was upto as he till date never had a person buying only 100 pieces. reson being he was a wholesaler. When i explained the DIY plan, he suggested me to use 520 ohms resistor with each LED as the brightness will be uniform. Made sense to me as he was earning only Rs15 for 100 resistors. Okay, Brought the stuff home and also purchase a soldering kit for 50 bucks from the same guy. First tried my hand at soldering and was feeling confident. Then planned the way i needed the lights. Also used a sand paper to make the LEDs rough as the light looked like a spot light that a wide spread one. Note to all electronics guys: You may puke looking at my circuit diagram and the way i have soldered. Here is the circuit diagram. Rest of the pics are self explanatory. I did the same for the Tata safari roof lights and the number plate light also. Will post the pics later Attached Thumbnails __________________ Cheers! Shreyas Last edited by shreyasma : 22nd February 2009 at 22:25.