How to Use SMD LEDs in Your Electronics Projects
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Date: 2023-11-17
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Comments and reviews: 9
Loneman
The polarity markings made me think I was going nuts when I first used SMD LEDs for modding tail-cap switches on torches! _Mmmm, illuminated tail-caps. _
I had a MM, but it didn't have a diode check option, so my method was 2 wires off an 18650 direct to the LED, with a 50-50 chance of blowing or lighting.
I'd make sure I had the markings & polarities memorised, then to another colour LED, then another, only to find the last ones wouldn't illuminate.
I double and triple-checked my soldering, the SMD resistor values, wiring, et cetera before finally realising that LED manufacturers are malicious idiots and that I was indeed still sane, _just, _ lol.
I now have a much more capable MM. It would have been handy if I'd seen this video a while ago, though, possibly, I'd have fewer grey hairs.
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The polarity markings made me think I was going nuts when I first used SMD LEDs for modding tail-cap switches on torches! _Mmmm, illuminated tail-caps. _
I had a MM, but it didn't have a diode check option, so my method was 2 wires off an 18650 direct to the LED, with a 50-50 chance of blowing or lighting.
I'd make sure I had the markings & polarities memorised, then to another colour LED, then another, only to find the last ones wouldn't illuminate.
I double and triple-checked my soldering, the SMD resistor values, wiring, et cetera before finally realising that LED manufacturers are malicious idiots and that I was indeed still sane, _just, _ lol.
I now have a much more capable MM. It would have been handy if I'd seen this video a while ago, though, possibly, I'd have fewer grey hairs.
reply
Manche
I need your help. I'm a totally newbie in electronic and I bought some little project to build some blinking LEDs on a star shaped PCB. I've broke one led and took one from another previous kit that I had a spare. Only the replacement LEDs light and the other LED are not doing anything. Ive test those with my multimeter and every LED that I test with the diode mode light the replacement.
The project use 5-6V and I use a 5v cell phone charger on a little usb pcb board that I had in my hands. The voltage of the board gave me 4, 62V
I don't know if there's a malfunction in the chip that makes the light blink or if the replacement LEDs need less power and for a reason that I don't know, take all the energy.
Thanks for your help
reply
I need your help. I'm a totally newbie in electronic and I bought some little project to build some blinking LEDs on a star shaped PCB. I've broke one led and took one from another previous kit that I had a spare. Only the replacement LEDs light and the other LED are not doing anything. Ive test those with my multimeter and every LED that I test with the diode mode light the replacement.
The project use 5-6V and I use a 5v cell phone charger on a little usb pcb board that I had in my hands. The voltage of the board gave me 4, 62V
I don't know if there's a malfunction in the chip that makes the light blink or if the replacement LEDs need less power and for a reason that I don't know, take all the energy.
Thanks for your help
reply
Kevin
I so much want to make a POV clock with smd parts. It would be lighter and less clunky looking when not spinning. I also want to incorporate a qi charging coil to the propeller so the arduino and motor does not have to be on the board with a battery, reducing spinning weight and also making it neater in appearance. Now if i could only figure out how a smd hall sensor would mount to trigger a magnet and set the timing.
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I so much want to make a POV clock with smd parts. It would be lighter and less clunky looking when not spinning. I also want to incorporate a qi charging coil to the propeller so the arduino and motor does not have to be on the board with a battery, reducing spinning weight and also making it neater in appearance. Now if i could only figure out how a smd hall sensor would mount to trigger a magnet and set the timing.
reply
Manojkumar
I use to watch your videos all are very useful for basic needs on that section I just need a new video related on PAC unit basic principles so that it will be very useful for all of them it possible kindly look into this comment if possible make it new content of pac working.
Thank you Engineering mindset
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I use to watch your videos all are very useful for basic needs on that section I just need a new video related on PAC unit basic principles so that it will be very useful for all of them it possible kindly look into this comment if possible make it new content of pac working.
Thank you Engineering mindset
reply
Segphalt
D1: SMD component (stripe on back I'd say LED) (bottom right quad)
F2: SMD component (resistor) Centerish
D3: Screw
B4: Red LED (through hole)
Also mobile no less (almost missed D1 though)
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D1: SMD component (stripe on back I'd say LED) (bottom right quad)
F2: SMD component (resistor) Centerish
D3: Screw
B4: Red LED (through hole)
Also mobile no less (almost missed D1 though)
reply
Dave
I found the best way to work with SMD LEDs, was to 3D print a mould / holder, to keep the SMDs in position, I then hand soldered them with a very fine tip, wasn't too hard at all.
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I found the best way to work with SMD LEDs, was to 3D print a mould / holder, to keep the SMDs in position, I then hand soldered them with a very fine tip, wasn't too hard at all.
reply
kaptaintrips
I showed my son your 'Ohms Law' video after he became dissatisfied with my explanation.
He basically asked why I didn't explain it so simply.
reply
I showed my son your 'Ohms Law' video after he became dissatisfied with my explanation.
He basically asked why I didn't explain it so simply.
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Iskelderon
Thanks!
I've seen these used in model kits (like to light the eyes of a Gundam model) when regular LEDs would be too clunky.
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Thanks!
I've seen these used in model kits (like to light the eyes of a Gundam model) when regular LEDs would be too clunky.
reply
Truth
E2 - either it is a part of the carpet of there is something there. F2 - black speck, D3 - looks like a screw, B4 - LED
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E2 - either it is a part of the carpet of there is something there. F2 - black speck, D3 - looks like a screw, B4 - LED
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