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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.
@@John-ed2wj I was trying to do a perfect circle of very small SMD LEDs (4x2mm if I remember correctly), it only takes one or two to be half a millimetre out and it ends up looking messy, eventually (after various other failed ideas) I ended up printing little 3D guides that I could drop the LEDs into, with space to allow me to solder.
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)
He asked about the number of objects. I spot many many carpet fibers in all grid squares. Unless carpet fibers are not objects. Also, a large hair stretching across D3, D4, E2, E3.
It's a valuable lesson. Thanks to learnt how to calculate resistor value to drop excess voltage between supply and load. 🙏 ..... from West Bengal, India.
What does it mean if an LED datasheet has forward voltage specified as a range from min to max (no average or typical). What should I use to calculate the resistor in this case? They do say what the forward current is.
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
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. 😆👍
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….
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
My guess would be to use a power source with a lower voltage, this way you don’t have to lower the voltage (as much) to power the led. Get as close to the forward voltage as possible, but remember that the voltage can drop when using more components or when batteries go down on power (if batteries are used).
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D1, F2, D3, B4
I see: 5 objects
- 1D
- 2F
- 3D
- 4B
- 5B (although i don't know what it is lol.... could be dirt)
D1/F2 aside from the obvious other two
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.
@Dave Lordy Can we see a picture or stl of the mould?
It's easier to put some solder on the pad and then hand solder them. No need for any mold.
@@John-ed2wj The mould was to keep them perfectly aligned.
@@davelordy ah, got you.
@@John-ed2wj I was trying to do a perfect circle of very small SMD LEDs (4x2mm if I remember correctly), it only takes one or two to be half a millimetre out and it ends up looking messy, eventually (after various other failed ideas) I ended up printing little 3D guides that I could drop the LEDs into, with space to allow me to solder.
B4 red led, D1 smd led, D3 screw, F2 black thingy, B5 white thingy.
Great vid. Love real world examples like this.
Yes more real world vids required
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)
He asked about the number of objects. I spot many many carpet fibers in all grid squares. Unless carpet fibers are not objects. Also, a large hair stretching across D3, D4, E2, E3.
And some dust particles on my screen 😀
@Harold Depends on the unit.
Check out NEW resistor video, everything covered! ➡️ th-cam.com/video/DYcLFHgVCn0/w-d-xo.html
Seen the new LED explained video? so much detail covered! th-cam.com/video/O8M2z2hIbag/w-d-xo.html
B4 - diode?
D3 - screw
D1 - metal nut?
D2E2E3D3D4 - hair strand
F2 - diode? Small chipset?
0:21 4B - LED ; 3D - SCREW ; 1D - LED ; 2F - DIODE
Gret information in easy way.
nicely explain sir .
👌👍😇
4-B, 3-D, 1-D, 2-F
I love you videos. Very educational.
It's a valuable lesson.
Thanks to learnt how to calculate resistor value to drop excess voltage between supply and load. 🙏
..... from West Bengal, India.
Check out NEW resistor video, everything covered! ➡️ th-cam.com/video/DYcLFHgVCn0/w-d-xo.html
Do you think you could cover more On Electronics Engineering? I enjoy these so much!
3:45 if I use only one resistor it work ?
Yes but not advisable as due to tolerances, each led will be at a different brightness.
Such a great video good detail
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.
Since TH-cam's last update allows you to ZOOM IN up to 8X zoom, this became too easy 😊😊
What does it mean if an LED datasheet has forward voltage specified as a range from min to max (no average or typical). What should I use to calculate the resistor in this case? They do say what the forward current is.
1-D, 2-F, 3-D & 4-B
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
Have you seen our CRAC unit and data centre hvac videos?
D1 led
F2
D3, screw
B4 red led
Seen the new LED explained video? so much detail covered! th-cam.com/video/O8M2z2hIbag/w-d-xo.html
Thanks!
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. 😆👍
Check out NEW resistor video, everything covered! ➡️ th-cam.com/video/DYcLFHgVCn0/w-d-xo.html
Very good class in the chennal
What about when its slightly under voltage with a buck converter
4...D1,F2,D3, B4
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...
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….
More about smd component .plz
Sir.
SMD surface mount device.
Good vedio
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
Seen the new LED explained video? so much detail covered! th-cam.com/video/O8M2z2hIbag/w-d-xo.html
@@EngineeringMindset thanks
@@EngineeringMindset interesting video but you don't talk why my case occurs....
B4, D1, D3,F2
E2 - either it is a part of the carpet of there is something there. F2 - black speck, D3 - looks like a screw, B4 - LED
Seen the new LED explained video? so much detail covered! th-cam.com/video/O8M2z2hIbag/w-d-xo.html
1D, 2F, 3D, 4B
Can you show the best way to solder those components onto a PCB?
Hot air, liquid metal, high temp, low air volume
Good suggestion
b4,b2,e2
3x components : D1, D3, B4
4B - D3 - F2 - D1 - and maybe 5B
I remember seeing this video a couple months ago. What happened to it?
Please darkness sensors
D3 and F2 also have objects other than the obvious red led. 😃
Seen the new LED explained video? so much detail covered! th-cam.com/video/O8M2z2hIbag/w-d-xo.html
What does SMD mean?
surface mounted diode
Super Mad Dimensions.
Super Micro Dimensions?
@@tomg721 _"surface mounted diode"_
It's surface-mount device.
Surface mount device
How to avoid wasting power in the resistor?
My guess would be to use a power source with a lower voltage, this way you don’t have to lower the voltage (as much) to power the led.
Get as close to the forward voltage as possible, but remember that the voltage can drop when using more components or when batteries go down on power (if batteries are used).
Check out NEW resistor video, everything covered! ➡️ th-cam.com/video/DYcLFHgVCn0/w-d-xo.html
Seen the new LED explained video? so much detail covered! th-cam.com/video/O8M2z2hIbag/w-d-xo.html
Love iy
4 objects: B4 D3 D1 F2
1 D
2 F
3 D
4 B
4 c column
I spotted 4
4b, 1d, 3d, 2f
3
B4 D3
how many? at least three fiddy
*TREE!* It's _TREE_ fiddy, that's what the Loch Ness monster cute little girl-scout was askin' fo'. Now shut yo' mouth, woman!
D 1
😢😢🎉❤OMG
First 😊
is d
It’s in F2
B4,D1,D3,F2