I'm a bored 79 year old looking things to keep my mind active. So, I bought a Raspberry Pi 5 and am looking at all the things I can do with it, besides just surf the web. :) RUclips is an amazing classroom. Thanks for your hard work, you obviously love it!
Great job! As an electronics R&D lab technician I worked these circuits daily (a long time ago.) You nailed this topic! You obviously understand your craft and can "splanify" it. When someone KNOWS a topic, they can explain it well. Thanks for getting straight to your topic and making a very useful video.
I thoroughly enjoy watching your videos. If I would have had you in industrial arts (electronics), I would have paid attention. Instead, I get to watch now. Thank you for your time!
This is a very important subject for my 1947 Ford Pickup truck. I'd would like to run running lights on my running boards. Thank you for you sharing Rachel. Miss seeing you on TV.
Excellent! Simply excellent! I watched a RUclips electronics video recently that stated if you don’t want to do the math, just figure 100 for each volt you need to use. Don’t know if I trust that or not!
As a beginner project, I'm making a PIR/LDR dependent light with rechargeable 3.7V li-ion battery including charge/5V boost circuit board. I thought the LED part would be the easiest, but quickly realized it can get tricky. Watched a few videos. Yours was the most helpful in answering all of my questions. Thanks.
As an electronics tech I found your tutorial to be a very clear and concise explanation of basic electronics theory Rachel. Yeah I clicked on the link to check out the cute girl but stuck around for the energetic and entertaining as well as informative lesson. Well done young lady, you are a talented instructor! Liked and subscribed
I' have watched many videos on this subject, and while they were all helpful to some extent, this was the most comprehensive and easily understood guide for me. Thank you so much!!!
Thank you! My god I have been trying to find a video to explain this so I can add lights to a model train layout and every single video or guide I read or watched was insanely complicated. This is excellent.
Thanks for posting this video. It is helping me finish a project that originally started in 2006. Wow! how much time has passed. Anyway after being stored away I just pulled it out to reconstruct it and finally finish the LEDS. Also I am glad you mentioned the duds in a package. It turned one of the red ones was bad. Very helpful, thanks again.
Excellent video! Very thorough, well explained and easy to understand. I will use this video to draw up my schematic to wire and install 3 volt LED lamp lights in my model railroad depot structure. Great job, thank you!
This was an awesome video. You explained it all so clearly and plainly, no jargon. And those pictures help so much! I will be sad if any of mine die as they will be going in resin XD
Finally!! Straight forward, easy to follow along, readable diagrams, on point the WHOLE time and most all at no point did have to write down something that’s not explained to then go look that up. Amazing, thank you. I have two question… I’ve always wanted to start adding lights to my woodworking and art so I save all old electronics. Can you take resistors from those and use them? Also do you do a video on reading resistors? Thanks again
I really enjoy the way you explain how leds are wired and voltage distribution. I knew some and learned more. Your enthusiasm is amazing. I just finished a project involving Lionel Trains, Erector build and changing from AC to DC. Had two combinations of lights, two separate 3mm yellow led circuits in series, then 5 mm Red/Green in parallel for signaling. I didn't see a way of attaching a photo. Thank you for sharing your knowledge.
Thank you Rachel from New Zealand. I am repurposing some old car headlights in to party lights. I am using 24 volt Blue and Red LED's and I was just going to series them on a blue circuit and a red circuit. But your explanation of a hybrid circuit with its benefits was excellent. I think that means it will also make it easier to introduce alternate sequencing of the two circuits, (you know so it flashes blue then red then blue etc) but I don't really know how to make it do this. Any tips would be great! In any case, you are a wonderful teacher and I loved your video. Thank you very much.
Hey this is great. Fantastic domain knowledge about electronics, et al and polished TV skills to make an engaging, appealing, and well-paced presentation is a killer combination of skill sets. It's so easy to make this stuff too dry, or too goofy, or patronizing, or whatever. It seems to me a lot better than it used to be, but used to feel impossible to casually learn about this stuff from someone who wasn't dead set on coming across like a punitive, lecturing grandfather, and I'll bet that turned a lot of people off. (Definitely pushed me away from amateur radio when I was a teen, that's for sure.) So often in tech stuff, the people that get all the recognition are the ones pushing the bleeding edge of the field. Sure, that's important, but I think people giving an impassioned introduction to the basics have a much bigger impact on the world on a whole. Thank you for what you do!
Hi Rachel, thanks for explaining this very simply, I’m a complete novice to this & really found your explanation really easy to follow. Amazing work keep it up😃😃
There is another way to also tell, look inside the casing and the section of the LED that is larger is the negative side. This is good to know if someone cut all the leads the same length.
Good tip, i never heard any youtuber mention this other then checking the leg length but once you bend them they look about the same and it hard to tell, this is a fool proof way to know for sure. That being said you cant hurt a led wiring it backwards like an electrolytic capactior. ITs a diode so its just blocks the other way, up to a point, but that point most of us wont reach playing around with them, allowing too much current is what hurts them. I seen a video i think electrozap tried to put a diode to help with voltage spikes to protect a LED's or something simliar but more importantlyfound he couldnt burn out any LED with no matter what voltage his power supply applied to it, i think like 40v max. He kept it a a constant current, showing that high voltage doesnt burn out LEDs apparently, just high current does.
That's a great tip! 👍 When the leads get cut then I'm always looking for a coin battery to orient it correctly but it's much easier to look inside to tell the difference.
If I bend or cut the legs then I'm always looking for a coin battery to position the LED correctly so looking inside is a good tip. I'll add it to my routine! 👍
@@RachelDeBarrosLive The button battery test is great if the LED is still loose, not so much if a string of LED's have been soldered to a circuit board. 😜
Hello, I’m a novice interested in learning circuits. I have a question about the resistance calculations done at 5:08 : how come we didn’t have to add the current of all for LEDs to figure out the resistance? You divided by .02mAh and not .08mAh (for 4 LEDs). I seems like it’s always .02mAh whether it’s in series or parallel. Thanks in advance!
Great video! I'm curious now, what if you had the situation where you had an variable number of potential LEDs attached (let's say someone can come along add an LED at whim) rather than knowing ahead of time. How do you do both A) protect the 1 lonely LED when no others are connected, and B) also providing enough power for when the 10th LED is added?
Thank you! I think I finally understand the concept. A little fuzzy still on current and calculating, but you probably explain it in another video. Now to do some maths and figure out how to backlight this dashboard im building for my sim racing rig!!
This is amazing thank you for explaining the different ways and what u need I have watched a bunch of videos and they don’t explain them very good .. so awesome job !!!!
First time viewer. I found the content useful and your process of sharing information relatable. So I subscribed to see what comes next. I gotta add though, I was working on something while watching and listening to this episode and looking away something about your voice seemed familiar to me. I figured it out by the end of the video . At times in certain phrasing, a few words sound a lot like the tones used in automated home audio setup which various manufactures use to set speaker levels. WooP! WooP! wOOp! wOOp!
The video mentions that series circuits are good for when you have a limited power source. Can you elaborate on how many LEDs you could typically connect in series with a 9V battery? Another advantage of series connection is that it requires fewer components. How does this impact the overall cost and size of the circuit? thank u
Thank you Rachel. My next step is to actually make something to see if I understood you correctly. I want to put some LEDs in the bottom of a laser-cut shogi lamp that I plan for Christmas presents. I know with a basic circuit you are wiring direct from LED/resistor to battery so a switch would be necessary. Is a battery-charging circuit a complicated step or should I just have replaceable batteries?
Bonza! This was a really nifty and clear video, thanks. You have some really impressive graphics. I gleaned a lot from your video. Salutations, Steve. 😃😃😃🇦🇺🇦🇺🇦🇺
I am looking to make a griswold house. I was thinking of using 1.8mm leds, but I could go with 3mm. How would I accomplish this? I want the maximum number of lights on it. It's a Christmas village size ceramic house. I was thinking about using a few terminal distribution blocks that I could hide under the house. Any tips? Any videos you've done that could help?
Really love this video. You make it understandable and fun to listen to. I'm doing miniatures and need to fix lightning for my mini homes so checked to learn some more. Realised I had this small led lights at home while doing it 😅
I learned a lot about LED circuits with miniatures too. I built a Frankenstein castle facade a while back and wanted to add flickering candle lighting inside and blue flashes in the laboratory.
Can you just teach everything about life? I've spent years trying to figure out the basics but no one can explain it like you for me to finally understand. Thank you for your video. If you ever work with filaments can you please do a video? I've been trying to learn how to light up my dioramas. Now I can light my first one 😂
I have some questions regarding my current project. I have 5 red LED's 2V 20 mA and one 7 color changing LED 2v-5v, the mA not specified by the seller so I assume 20 mA. I would like to connect all of them to a 9v battery in parallel for a flying saucer I made. The color changing LED comes with it's own resistor. 1. What would be the resistor's Ohms on the multi color LED? If I calculated correctly using .02 amps by 2 volts remaining I come up with 100 ohms. Does this mean it ranges from 50 Ohms to 100 ohms for 2v to 5v? 2. Since each LED is treated like an individual would I be able to use 2 multi color LEDs with the 5 red LEDs? 3. Do I need to even be concerned with how may volts are remaining in the 9 volt battery if each LED has a resistor and drawing it's own voltage? I have 68 Ohm resistors for the 5 red LED's. Thanks.
So, I've connected some LEDs in my project all parallels and connected to the A/C power source. They all turns on. My project is house, garden and street lights LEDs. They all turned ON when they were all parallel connected to A/C power source. I never calculated or connected resistors. Are resistor necessary?
Hi Rachel, I stumbled across your channel while trying to find out on how to convert power hungry antique outdoor incandescent Christmas decorations that have been in my family for close to 50 years. One decoration an X candy cane stands about 40” tall about 24” wide and has about 180 lights, Red, Blue Green and some clear. Many of the bulbs are burnt out and they cost about $1.75 Canadian each to replace. I’m not sure on how to calculate to run it in a parallel circuit nor the type of wire to use as well how big of a transformer I would need? Any advice or guidance would be greatly appreciated, BTW not sure if it matters but our winters can get down to - 45C to -50C does that have an effect on the type of wire? I have watched a few of your videos, you have a new subscriber 🙂 Take care, Wayne
I need some help. I'm working on a project. What I want to do is place 5 leds on a light switch cover, and a few push buttons, one to each light. I want to pull power for them directly from the side of the light switch if possible (safely) so that I can push the buttons and light the leds (with the light switch on or off if possible, if not then when on is ok.) I just have no idea about how to draw this small amount of power from it. The leds are blink type and small. Any suggestions? I want to use the stock light cover if possible. Thanks!
Can you help me please? I want to light up 2 leds with AA battery holder, not the 9v battery. How to do this? Should I connect 2 of those battery holders? how to wire them? Each led will require approx 3 volts
Is the resistor always needed? Cause I’m making some light trees made out of polymer clay. And have already made 1 that works and didn’t know about resistor.
Hi, so i ordered like 2 packs of 50pc. 3mm red defused leds i am trying to connect 6 of them together but they all wanna flash at separate rates, what do i need to do in order to make them all flash at the same time ? Im doing a 3 on row front and back. 6 total.
So if I supply 3v to a parallel circuit of four 3mm LEDs that have a VF of 3 - 3.2 v..... do I not need to use a resistor? I have some 0 ohm resistors, is this what they are for?
5:13 AMA BEGGINER, GOT A QUESTION, WHAT RESISTOR I USE IF I LIGHT UP 20 LED RED LIGHT IN A ROW WITH ONE SWITCH BUTTON DO I REALLY NEED A RESISTOR?, AND ABOUT THE BATTERY, IS IT ENOUGH TO USE 9V TO POWER UP? I MEAN IF USING 3MM LED LIGHT :)
Hi, i am trying to nut out on how to have 2 sets of 4 led lights work of a USB, can you please guide me as to how, and the correct resister needed please, and will i need a resister between each led? - Green Leds
I've been experimenting with some LEDs with built-in microchips for use in my pinball machines. One is an 'extra fast flash' LED and they work great *except* for some reason they do not like being placed near the regular incandescent lamps in the machine, it will either lock 'on' solid or the flashing will be erratic. Can anybody explain what's going on there? Seems like the higher voltage 28v lamps in the game affected it the worst, and the LED was not even that close to the lamps, maybe 8 inches away. I don't get it.
I'm trying to hook up three 5mm white leds and two red 3mm leds, as well as, two yellow 3mm leds to a small motion sensor. When the motion sensor is activated, the leds will turn on. It is to be used in a model car, so when people passes the car the lights will turn on. Can you show me in a video on how to do that. That would be great. This without using a breadboard because it needs to fit in the car, van or truck model kit. Hope to hear back soon because there is no video on how to do something like this.
These leds seems to be resource hogs. Am I right in thinking that based on your example in the beginning of the video that even if you used a 120v wall outlet to power the series, you still would only be able to do 60ish lights?
Maybe a stupid question but there you go 😆 does all this work exactly the same for Smd ? Say I'm using 4 smds in a model car for example? Only thing is smds don't seem to state the ohms. Great video 👍
I'm a bored 79 year old looking things to keep my mind active. So, I bought a Raspberry Pi 5 and am looking at all the things I can do with it, besides just surf the web. :) RUclips is an amazing classroom. Thanks for your hard work, you obviously love it!
Finally undestood it all, after over 4 decades of living. School should have had RUclips 30 years ago!
SCHOOL
what a sad Yoke
Great job! As an electronics R&D lab technician I worked these circuits daily (a long time ago.) You nailed this topic! You obviously understand your craft and can "splanify" it. When someone KNOWS a topic, they can explain it well. Thanks for getting straight to your topic and making a very useful video.
I thoroughly enjoy watching your videos. If I would have had you in industrial arts (electronics), I would have paid attention. Instead, I get to watch now. Thank you for your time!
This is a very important subject for my 1947 Ford Pickup truck. I'd would like to run running lights on my running boards. Thank you for you sharing Rachel. Miss seeing you on TV.
Thanks for making this video! Your passion behind the subject is contagious lol. Awesome tutorial!
Excellent! Simply excellent! I watched a RUclips electronics video recently that stated if you don’t want to do the math, just figure 100 for each volt you need to use. Don’t know if I trust that or not!
I've never heard Ohm's Law put so simple and easy to understand. You are awesome! Thank you.
As a beginner project, I'm making a PIR/LDR dependent light with rechargeable 3.7V li-ion battery including charge/5V boost circuit board. I thought the LED part would be the easiest, but quickly realized it can get tricky. Watched a few videos. Yours was the most helpful in answering all of my questions. Thanks.
As an electronics tech I found your tutorial to be a very clear and concise explanation of basic electronics theory Rachel. Yeah I clicked on the link to check out the cute girl but stuck around for the energetic and entertaining as well as informative lesson. Well done young lady, you are a talented instructor! Liked and subscribed
Great video, you are so at ease it puts the viewer at ease. Thanks and keep up the great work.
Like everyone else has said, this is the best explanation that I have ran across. Thank you for your tutorial!
I was just getting more confused watching videos on LED circuits, and you’ve made it so easy. Thanks
Been watching videos all morning and just getting confused! This video was so helpful and easy to digest! Thank you!
I agree with most folks I am sure that this is one of if not the best Vid helping me to understand Parallel and series LED connections. Subscribed!
I' have watched many videos on this subject, and while they were all helpful to some extent, this was the most comprehensive and easily understood guide for me. Thank you so much!!!
Enjoyable to watch. Love her plain talk around calculating resistance. ❤
I so wish I had you when I was a freshman engineering student! It was such a nice refresher. Thank You!
Thank you! My god I have been trying to find a video to explain this so I can add lights to a model train layout and every single video or guide I read or watched was insanely complicated. This is excellent.
One of the best explained videos on parallel and series connections. Well done that girl. Puts all the blokes to shame.... 👍👍
Thanks for posting this video. It is helping me finish a project that originally started in 2006. Wow! how much time has passed. Anyway after being stored away I just pulled it out to reconstruct it and finally finish the LEDS. Also I am glad you mentioned the duds in a package. It turned one of the red ones was bad. Very helpful, thanks again.
❤ this thank you. I'M NEARLY 60 and want to get my grand kids doing something different. So I'm having to learn this first. Great tutorial
Excellent video! Very thorough, well explained and easy to understand. I will use this video to draw up my schematic to wire and install 3 volt LED lamp lights in my model railroad depot structure. Great job, thank you!
The coin battery is a great tip. Never thought of that. Beats always pulling out the alligator clips or breadboard every time I need to check one.
Having first learned to use LEDs on a breadboard with Arduino. I used to do the same thing!
can we use Arduino to make automatic sachet packaging machine that can weight and pack?@@RachelDeBarrosLive
I've just started getting into electronics and finding your videos so helpful. Thank you 😊
ruclips.net/channel/UCLmreVv7Nm2G6zwO9JUjpeg
This was an awesome video. You explained it all so clearly and plainly, no jargon. And those pictures help so much! I will be sad if any of mine die as they will be going in resin XD
Finally!! Straight forward, easy to follow along, readable diagrams, on point the WHOLE time and most all at no point did have to write down something that’s not explained to then go look that up. Amazing, thank you. I have two question… I’ve always wanted to start adding lights to my woodworking and art so I save all old electronics. Can you take resistors from those and use them? Also do you do a video on reading resistors? Thanks again
Feed the RUclips algorithm with a comment. Great video. Thank you!
Thank you so much for this tutorial, so many others I've come across have been a bit convoluted, but you make it clear and easy to understand.
ruclips.net/channel/UCLmreVv7Nm2G6zwO9JUjpeg
Totally agree. This video covered all of my questions. So thorough. I really appreciate it.
Nice explanation by a very nice lady. Good to see a lady explaining electronics.
this is exactly what i was hoping to find. the significance of this information is so valuable. and you are the loveliest person. thank you
Yvonne de Carlo, she was so amazing! Great taste and thanks for all the great information in your videos. Thanks for your time!
Thanks for watching! Let me know if there's any other topics you'd like me to cover!
@@RachelDeBarrosLive best voice ever :) OMH
I really enjoy the way you explain how leds are wired and voltage distribution. I knew some and learned more. Your enthusiasm is amazing. I just finished a project involving Lionel Trains, Erector build and changing from AC to DC. Had two combinations of lights, two separate 3mm yellow led circuits in series, then 5 mm Red/Green in parallel for signaling. I didn't see a way of attaching a photo. Thank you for sharing your knowledge.
Thank you Rachel from New Zealand. I am repurposing some old car headlights in to party lights. I am using 24 volt Blue and Red LED's and I was just going to series them on a blue circuit and a red circuit. But your explanation of a hybrid circuit with its benefits was excellent. I think that means it will also make it easier to introduce alternate sequencing of the two circuits, (you know so it flashes blue then red then blue etc) but I don't really know how to make it do this. Any tips would be great! In any case, you are a wonderful teacher and I loved your video. Thank you very much.
Thank you, I had a eureka moment when you so easily explained parallel curcuit for LED. Woohoo!
Hey this is great. Fantastic domain knowledge about electronics, et al and polished TV skills to make an engaging, appealing, and well-paced presentation is a killer combination of skill sets. It's so easy to make this stuff too dry, or too goofy, or patronizing, or whatever. It seems to me a lot better than it used to be, but used to feel impossible to casually learn about this stuff from someone who wasn't dead set on coming across like a punitive, lecturing grandfather, and I'll bet that turned a lot of people off. (Definitely pushed me away from amateur radio when I was a teen, that's for sure.) So often in tech stuff, the people that get all the recognition are the ones pushing the bleeding edge of the field. Sure, that's important, but I think people giving an impassioned introduction to the basics have a much bigger impact on the world on a whole. Thank you for what you do!
Thank you for this, answered all my questions about automotive 12V lighting applications and I learned even more than expected.
Glad to hear! 👍
Hi Rachel, thanks for explaining this very simply, I’m a complete novice to this & really found your explanation really easy to follow. Amazing work keep it up😃😃
this helped so much. thank you for the detailed explanations and diagrams. you are going places!
There is another way to also tell, look inside the casing and the section of the LED that is larger is the negative side. This is good to know if someone cut all the leads the same length.
Good tip, i never heard any youtuber mention this other then checking the leg length but once you bend them they look about the same and it hard to tell, this is a fool proof way to know for sure. That being said you cant hurt a led wiring it backwards like an electrolytic capactior. ITs a diode so its just blocks the other way, up to a point, but that point most of us wont reach playing around with them, allowing too much current is what hurts them. I seen a video i think electrozap tried to put a diode to help with voltage spikes to protect a LED's or something simliar but more importantlyfound he couldnt burn out any LED with no matter what voltage his power supply applied to it, i think like 40v max. He kept it a a constant current, showing that high voltage doesnt burn out LEDs apparently, just high current does.
That's a great tip! 👍 When the leads get cut then I'm always looking for a coin battery to orient it correctly but it's much easier to look inside to tell the difference.
If I bend or cut the legs then I'm always looking for a coin battery to position the LED correctly so looking inside is a good tip. I'll add it to my routine! 👍
@@RachelDeBarrosLive The button battery test is great if the LED is still loose, not so much if a string of LED's have been soldered to a circuit board. 😜
ruclips.net/channel/UCLmreVv7Nm2G6zwO9JUjpeg
Hello, I’m a novice interested in learning circuits. I have a question about the resistance calculations done at 5:08 : how come we didn’t have to add the current of all for LEDs to figure out the resistance? You divided by .02mAh and not .08mAh (for 4 LEDs). I seems like it’s always .02mAh whether it’s in series or parallel. Thanks in advance!
I can't thank you enough for this, i actually understand it at last 😊
Great video tutorial for basic understanding of wiring LEDs. Thank you!!
Glad it was helpful! 😄
Fabulous explanation. I can go forward with lighting my model railway layout. Thank you Rachel.
Hi I have a Cree led 3-3w. Is the calculation the same. 3.3v, 450ma input voltage 8v. I came up with 15ohms resistor.
Great video! I'm curious now, what if you had the situation where you had an variable number of potential LEDs attached (let's say someone can come along add an LED at whim) rather than knowing ahead of time. How do you do both A) protect the 1 lonely LED when no others are connected, and B) also providing enough power for when the 10th LED is added?
I love your energy! You are lit up just like your led chain! ⚡
Thank you! I think I finally understand the concept. A little fuzzy still on current and calculating, but you probably explain it in another video.
Now to do some maths and figure out how to backlight this dashboard im building for my sim racing rig!!
This is amazing thank you for explaining the different ways and what u need I have watched a bunch of videos and they don’t explain them very good .. so awesome job !!!!
First time viewer. I found the content useful and your process of sharing information relatable. So I subscribed to see what comes next.
I gotta add though, I was working on something while watching and listening to this episode and looking away something about your voice seemed familiar to me. I figured it out by the end of the video . At times in certain phrasing, a few words sound a lot like the tones used in automated home audio setup which various manufactures use to set speaker levels.
WooP! WooP! wOOp! wOOp!
Glad you found it helpful! Let me know if there's any topic you'd like to see in the future.
The video mentions that series circuits are good for when you have a limited power source. Can you elaborate on how many LEDs you could typically connect in series with a 9V battery?
Another advantage of series connection is that it requires fewer components. How does this impact the overall cost and size of the circuit?
thank u
Great videos!! I love your delivery, keeping it interesting and not intimidating!
Thank you Rachel. My next step is to actually make something to see if I understood you correctly. I want to put some LEDs in the bottom of a laser-cut shogi lamp that I plan for Christmas presents. I know with a basic circuit you are wiring direct from LED/resistor to battery so a switch would be necessary. Is a battery-charging circuit a complicated step or should I just have replaceable batteries?
I really like all your tutorials you are the best, well explained
Good clear bright presentation !
Thanks
Really helpful. I'm about to wire up 800+ LEDs for a Ace Frehley flashing guitar. Fingers crossed
Nice work. Great explanations. I am glad i got up today. Lol. Thank you.
Bonza! This was a really nifty and clear video, thanks. You have some really impressive graphics. I gleaned a lot from your video. Salutations, Steve. 😃😃😃🇦🇺🇦🇺🇦🇺
Thank you for you informative and enthusiastic knowledge share on LEDs. Helped with a project I'm embarking on.
Good stuff! You’re an awesome instructor/teacher. My favorite YT girl! ❤
I am looking to make a griswold house. I was thinking of using 1.8mm leds, but I could go with 3mm. How would I accomplish this? I want the maximum number of lights on it. It's a Christmas village size ceramic house. I was thinking about using a few terminal distribution blocks that I could hide under the house. Any tips? Any videos you've done that could help?
Just what I’m looking for! I’m a noob and has zero knowledge of electricity module, I have one question.. does the resistor require any cover?
Really love this video. You make it understandable and fun to listen to. I'm doing miniatures and need to fix lightning for my mini homes so checked to learn some more. Realised I had this small led lights at home while doing it 😅
I learned a lot about LED circuits with miniatures too. I built a Frankenstein castle facade a while back and wanted to add flickering candle lighting inside and blue flashes in the laboratory.
Realy good simple explication, thank you. Definitely subscribing.
Great beginner friendly explanation.
Hi, at 11 min in video, If I was to use one resistor instead which I think you can do (correct me if I an wrong) then you would be 80ohms?
Can you just teach everything about life? I've spent years trying to figure out the basics but no one can explain it like you for me to finally understand. Thank you for your video. If you ever work with filaments can you please do a video? I've been trying to learn how to light up my dioramas. Now I can light my first one 😂
This is awesome! Thank you for making this video.
I have some questions regarding my current project. I have 5 red LED's 2V 20 mA and one 7 color changing LED 2v-5v, the mA not specified by the seller so I assume 20 mA. I would like to connect all of them to a 9v battery in parallel for a flying saucer I made. The color changing LED comes with it's own resistor.
1. What would be the resistor's Ohms on the multi color LED? If I calculated correctly using .02 amps by 2 volts remaining I come up with 100 ohms. Does this mean it ranges from 50 Ohms to 100 ohms for 2v to 5v?
2. Since each LED is treated like an individual would I be able to use 2 multi color LEDs with the 5 red LEDs?
3. Do I need to even be concerned with how may volts are remaining in the 9 volt battery if each LED has a resistor and drawing it's own voltage? I have 68 Ohm resistors for the 5 red LED's. Thanks.
So, I've connected some LEDs in my project all parallels and connected to the A/C power source. They all turns on. My project is house, garden and street lights LEDs. They all turned ON when they were all parallel connected to A/C power source. I never calculated or connected resistors. Are resistor necessary?
Hi Rachel, I stumbled across your channel while trying to find out on how to convert power hungry antique outdoor incandescent Christmas decorations that have been in my family for close to 50 years. One decoration an X candy cane stands about 40” tall about 24” wide and has about 180 lights, Red, Blue Green and some clear. Many of the bulbs are burnt out and they cost about $1.75 Canadian each to replace. I’m not sure on how to calculate to run it in a parallel circuit nor the type of wire to use as well how big of a transformer I would need? Any advice or guidance would be greatly appreciated, BTW not sure if it matters but our winters can get down to - 45C to -50C does that have an effect on the type of wire? I have watched a few of your videos, you have a new subscriber 🙂 Take care, Wayne
I'm new to electronics, i wanted to know if i can connect my LED using two different voltage sources without ground
you nailed it, great splaning
I need some help. I'm working on a project. What I want to do is place 5 leds on a light switch cover, and a few push buttons, one to each light. I want to pull power for them directly from the side of the light switch if possible (safely) so that I can push the buttons and light the leds (with the light switch on or off if possible, if not then when on is ok.) I just have no idea about how to draw this small amount of power from it. The leds are blink type and small. Any suggestions? I want to use the stock light cover if possible. Thanks!
Can you help me please? I want to light up 2 leds with AA battery holder, not the 9v battery. How to do this? Should I connect 2 of those battery holders? how to wire them? Each led will require approx 3 volts
🎉🎉 My metal spider project will have several of your freakish LED circuits used! See ya on the next live workshop!! 🎉🎉
Yaaas!!!! 🤣
Is the resistor always needed? Cause I’m making some light trees made out of polymer clay. And have already made 1 that works and didn’t know about resistor.
what is the thinnest 2 core cable i can use for LEDS Please ?
Huh, good tip to test the LEDs are working. I honestly never thought of that and just assumed they would do quality control when they're made.
Do u have a video on how to hook up filaments??
Hi, so i ordered like 2 packs of 50pc. 3mm red defused leds i am trying to connect 6 of them together but they all wanna flash at separate rates, what do i need to do in order to make them all flash at the same time ? Im doing a 3 on row front and back. 6 total.
If i want to connect 5 white LED and 10 Blue LED in parallel to a 9v hw high watt battery what resistor should i use??
So if I supply 3v to a parallel circuit of four 3mm LEDs that have a VF of 3 - 3.2 v..... do I not need to use a resistor? I have some 0 ohm resistors, is this what they are for?
5:13 AMA BEGGINER, GOT A QUESTION, WHAT RESISTOR I USE IF I LIGHT UP 20 LED RED LIGHT IN A ROW WITH ONE SWITCH BUTTON DO I REALLY NEED A RESISTOR?, AND ABOUT THE BATTERY, IS IT ENOUGH TO USE 9V TO POWER UP? I MEAN IF USING 3MM LED LIGHT :)
Hi, i am trying to nut out on how to have 2 sets of 4 led lights work of a USB, can you please guide me as to how, and the correct resister needed please, and will i need a resister between each led? - Green Leds
I had to step back and ask myself, did I really _really_ understand all that??? Yes, yes, I think I did! Thank you!
Yay! 🥳
I've been experimenting with some LEDs with built-in microchips for use in my pinball machines. One is an 'extra fast flash' LED and they work great *except* for some reason they do not like being placed near the regular incandescent lamps in the machine, it will either lock 'on' solid or the flashing will be erratic. Can anybody explain what's going on there? Seems like the higher voltage 28v lamps in the game affected it the worst, and the LED was not even that close to the lamps, maybe 8 inches away. I don't get it.
Great video.
Thanks so much. 👍
Which om use with serious 50 led?
Can I use a 9v battery with 4 white 5mm led diode?
I'm trying to hook up three 5mm white leds and two red 3mm leds, as well as, two yellow 3mm leds to a small motion sensor. When the motion sensor is activated, the leds will turn on. It is to be used in a model car, so when people passes the car the lights will turn on. Can you show me in a video on how to do that. That would be great. This without using a breadboard because it needs to fit in the car, van or truck model kit. Hope to hear back soon because there is no video on how to do something like this.
These leds seems to be resource hogs. Am I right in thinking that based on your example in the beginning of the video that even if you used a 120v wall outlet to power the series, you still would only be able to do 60ish lights?
Thank you so much for not using a bread board! I was able to understand everything. I love the organized chaos that was wiring all of the LEDs. :)
your methodology is great 👍
can we use Arduino to make automatic sachet packaging machine that can weight and pack?
Exceptional pedagogy.
Maybe a stupid question but there you go 😆 does all this work exactly the same for Smd ? Say I'm using 4 smds in a model car for example? Only thing is smds don't seem to state the ohms. Great video 👍
Wonderful explanation to extrapolate to christmas tree lights
Glad you found it helpful. Once I understood the different arrangements I got much better at fixing broken light strings.
GOOD MORNING WHAT GAUGE WIRE DID YOU USE
What is the difference between 1/2 w and 1 w resistor??