FLIP FLOP LED Flasher Circuit Using Transistor BC547 (Breadboard Tutorial)

Поділитися
Вставка
  • Опубліковано 2 сер 2019
  • Learn How to make a FLIP FLOP LED Flasher Circuit Using Transistor BC547 on Breadboard (Tutorial). Watch full video carefully in order learn the circuit and then make this project on PCB. The breadboard tutorials is the best way to learn any simple. I hope this simple DIY video will be useful for you!
    List Of Materials:
    1. 2x LEDs: s.click.aliexpress.com/e/_d7p...
    2. Resistor: 10K, 470 Ohms: s.click.aliexpress.com/e/_d7S...
    3. 100uF Capacitors: s.click.aliexpress.com/e/_d6r...
    4. BC547 Transistors: s.click.aliexpress.com/e/_dTi...
    5. Breadboard: s.click.aliexpress.com/e/_dY1...
    6. Battery Connector: s.click.aliexpress.com/e/_dYJ...
    7. 9V Battery (Rechargeable): s.click.aliexpress.com/e/_dT8...
    8. Jumper Wires: s.click.aliexpress.com/e/_d8o...
    and some basic tools are
    Soldering Iron: s.click.aliexpress.com/e/_dT1...
    Soldering Paste: s.click.aliexpress.com/e/_dZq...
    Hot Glue Gun: s.click.aliexpress.com/e/_dYs...
    Third Hand Tool: s.click.aliexpress.com/e/_dZZ...
    Multimeter: s.click.aliexpress.com/e/_dZu...
    Drill & Electric Screwdriver: s.click.aliexpress.com/e/_d8u...
    Cordless Drill: s.click.aliexpress.com/e/_dTl...
    DIY Tool Kit: s.click.aliexpress.com/e/_dUR...
    Variable Power Supply: s.click.aliexpress.com/e/_dVj...
    For more useful DIY videos please subscribe our channel "IdeasTV".
    Please give us your precious feedback below in comments also like this video and share with your friends :)
    Thanks! have a good day :)
    Video Link: • FLIP FLOP LED Flasher ...
    Facebook: goo.gl/UAw6D3
    Twitter: / ideastvofficial
    Instagram: / ideastvofficial
    DISCLAIMER: This video description contains affiliate links, which means that if you click on one of the product links, I’ll receive a small commission on a purchase without additional cost to you. This help support the channel and allows us to continue to make videos like this. I only suggest those products that I personally love and use in the videos. Thank you so much for the support!
    #FlipFlop #BreadBoardTutorials #IdeasTV
  • Навчання та стиль

КОМЕНТАРІ • 366

  • @rejithnair4754
    @rejithnair4754 3 роки тому +61

    Hi.. Thanks for the circuit.. It's really great circuit.. In the video you told connecting two emmiters of the transistors and you actually connected the emitter with collector of the second transistor.

    • @IdeasTv
      @IdeasTv  3 роки тому +7

      Yes there's a mistake in caption 3:06 . connect Emitter with Collector. comment pinned.

    • @frederickbrown9631
      @frederickbrown9631 2 роки тому

      Cap

    • @checkerface5710
      @checkerface5710 2 роки тому +2

      to be honest 3:06 to 5:58 are all wrong to be honest (the first capacitor connected to collector ) when it is connected to emitter.

    • @clicksandbeeps61
      @clicksandbeeps61 2 роки тому

      I cannot follow it’s so confusing. Which is the 2nd transistor? All of the video from 3:06 is wrong :(

    • @gassy7083
      @gassy7083 2 роки тому

      @@checkerface5710 g

  • @sarojlotus8483
    @sarojlotus8483 4 роки тому +10

    Adding an beeper to sync with leds along circuit diagram could be icing on the cake!

  • @user-em7hz1iu2x
    @user-em7hz1iu2x 5 місяців тому

    You are the best breadboard layout person that I have come I am just learning how to do this and it's really hard to make mistakes watching you

  • @nyattorney1927
    @nyattorney1927 Рік тому +11

    This circuit is very educational because we get to work through your mistakes.

  • @rekhajalal8384
    @rekhajalal8384 2 місяці тому +1

    Thanks for the circuit I was desperately searching for this circuit

  • @sabbirahmmedshehab1192
    @sabbirahmmedshehab1192 Рік тому +3

    Thanks for this circuit. I was desperately searching for this circuit

  • @akr8035
    @akr8035 4 роки тому +23

    Where can I get a circuit diagram

  •  3 роки тому +4

    THAT rotary plate at the end, I'm dying xD xD xD ... what a simple solution :D

  • @suryadevakrishnalal3513
    @suryadevakrishnalal3513 19 днів тому

    Thank you so much for this circuit i changed tansistor to n2222 then only it worked
    Once again thank you so much

  • @speedsiva
    @speedsiva 5 місяців тому

    is there a way to add a time delay between the blinking of both led

  • @hatakeee4919
    @hatakeee4919 3 роки тому +2

    Good Video! but what is the wire you put here 1:35? thank you for your answer.

  • @dionron1234
    @dionron1234 2 роки тому

    Lights turn on, but do not blink. Using 330 resistors with the 10. will this make a difference?

  • @KevinHarper3DArtist
    @KevinHarper3DArtist 4 роки тому +17

    After doing 3 different tutorials from 3 different youtubers, this is the first one that actually worked for me. I would love to see a video that explains the logic behind this. What actually happens when and how.

    • @IdeasTv
      @IdeasTv  4 роки тому

      thank you! and stay tuned, more will come

    • @frederickbrown9631
      @frederickbrown9631 2 роки тому +3

      Cap

    • @bertspeggly4428
      @bertspeggly4428 8 місяців тому

      There's much better videos than this out there. Keep searching.

  • @STRANGER8049
    @STRANGER8049 2 роки тому +72

    How many of here for collage projects 😁

    • @IdeasTv
      @IdeasTv  2 роки тому +7

      best of luck

    • @astignanoel7058
      @astignanoel7058 Рік тому +2

      Here for a high school project

    • @Xtreme-i2v
      @Xtreme-i2v Рік тому

      I am here just to complete the task my uncle gave me 5 months ago that I forgot about

    • @elyascanfixit
      @elyascanfixit Рік тому +3

      I’m here because I’m bored

    • @icedclips725
      @icedclips725 Рік тому +2

      Never went to college

  • @DieegoLpzz
    @DieegoLpzz 3 роки тому +1

    Did it on fritzing and a capacitor exploded. What can the solution be?

  • @saiganesh.siddaraju5192
    @saiganesh.siddaraju5192 28 днів тому

    I have tried it works perfectly thank you so much

  • @lucasmoreirapereira631
    @lucasmoreirapereira631 11 місяців тому

    Can i use a 470μF capacitor?

  • @raybu9816
    @raybu9816 Місяць тому

    What voltage LED was you using or what is the minimum and maximum led you can use
    Please thank you

  • @projectwes4573
    @projectwes4573 2 роки тому

    great video now to see if I have all the parts to make the circuit

  • @KeerthanaMariswamy-hv8us
    @KeerthanaMariswamy-hv8us 17 днів тому

    Thankyou so much it helped me lott....❤

  • @user-em7hz1iu2x
    @user-em7hz1iu2x 5 місяців тому

    You said connect both emmiters and you connected the emitter to the collector of the second transistor that's why mine does not work. Now is this do as I do or do as I say?

  • @DTWIKKE
    @DTWIKKE 4 місяці тому +1

    Made this as my first elektronica project with a bit other components and it worked from thé first time. Happy as a 53y old kid😂😂😂

    • @DTWIKKE
      @DTWIKKE 4 місяці тому

      Now I read that thé video is wrong but mine works🤷

    • @ramupattu9444
      @ramupattu9444 Місяць тому

      எனது முதல் project இந்த astable multivibrators தான்.
      இப்போது வயது 51 .

  • @joshuaidos5361
    @joshuaidos5361 Рік тому

    Kala ko yung 10k na resistor nasa base ng transistor? Diba laging sa huli yung base kasi e c b ? Tas sa gitna nya nilagay yung paa ng 10k resistor so collector yun? Kasi sabe connect the resistor to the base ?????

  • @mrssylli2
    @mrssylli2 4 роки тому

    Thanks.It works!!

  • @jerrymacneil3747
    @jerrymacneil3747 4 роки тому +2

    problem solved,works great.

  • @seriesg7171
    @seriesg7171 3 роки тому +1

    Isn’t this the Astable Multivibrator circuit?

  • @parthvasita007
    @parthvasita007 2 роки тому

    Thanks man it's really work 👍👍

    • @IdeasTv
      @IdeasTv  2 роки тому

      You're Welcome 👍

  • @MS-fw9rm
    @MS-fw9rm 4 роки тому +1

    Excellent, thanks bro😊😊👍

  • @dhruvsutariya1264
    @dhruvsutariya1264 2 роки тому

    Nice one bro thxks I have built this with your video

  • @mangakeyyorivaldy9117
    @mangakeyyorivaldy9117 24 дні тому

    Is it possible to make it Blinking at the same time?

  • @catsworld4471
    @catsworld4471 3 роки тому

    Any 100uf capacitor use

  • @dormitoryfellow8413
    @dormitoryfellow8413 Рік тому

    can I use transistors other than the 50V 100Micro? I've only got 25V for it and its not blinking

    • @IdeasTv
      @IdeasTv  Рік тому

      transistor or capacitor?

  • @kailove8767
    @kailove8767 2 роки тому

    One light blinked but honestly haha these instructions were a little complicated for me, but I’ll try again

  • @imformyjesus4509
    @imformyjesus4509 Рік тому +1

    It was nice and simply project... In this experiment we have to prepare the report bro...... Just three page need... Kindly help us... what is use of this and some introduction about this and etc....

  • @agustinhito
    @agustinhito 9 місяців тому

    Yo probe agregarle dos led mas, entre el colector y el negativo y en el emisor del otro transistor para indicar cuando abren los transistores, funciona

  • @zappa4153
    @zappa4153 3 роки тому

    I got it to work but it didn't flash, brand new to this so I don't have a clue what went wrong.

  • @aquarine9185
    @aquarine9185 4 роки тому +1

    Pls explain me how to design a circuit diagram. Actually i dont know how the put resitive and inductive value.

    • @IdeasTv
      @IdeasTv  4 роки тому +2

      In this video: ua-cam.com/video/pxfkcfNggqI/v-deo.html you'll learn this.

  • @erikajonesmanuel6428
    @erikajonesmanuel6428 2 роки тому

    Hi can you share the shematic? Please

  • @fakihkhsaid351
    @fakihkhsaid351 2 роки тому

    What that function of capacitors this cicuirt

  • @abdulia698
    @abdulia698 2 роки тому

    It Works thank you

    • @IdeasTv
      @IdeasTv  2 роки тому

      You're welcome!

  • @harshkharwar9352
    @harshkharwar9352 4 роки тому +4

    May I can use 220 ohm resistor instead of 470

  • @dxrkerzz8374
    @dxrkerzz8374 3 роки тому +1

    it works with 2n2222 transistors too! thx for showing us

    • @IdeasTv
      @IdeasTv  3 роки тому

      you're welcome

  • @endahhijriani5391
    @endahhijriani5391 2 роки тому +1

    thank you very much... this video helpful.. may I ask the schematic flip flop circuit ?

    • @IdeasTv
      @IdeasTv  2 роки тому +1

      you're welcome

  • @Poppy-guy47
    @Poppy-guy47 Рік тому +1

    I really love this video but i got many difficulties making it because i was using c945 transistors but it is actually the first video that worked on my bread board thanks very much......❤❤❤

    • @IdeasTv
      @IdeasTv  Рік тому

      Best of luck for your future projects

  • @SupremeKingSovereign
    @SupremeKingSovereign 5 місяців тому

    Finally achieved this blinking light. Though one light stays on longer than the other.

  • @physicguy92093
    @physicguy92093 Рік тому +1

    How is the emiter in one tranzistor the other way than the other iam so much confused

    • @IdeasTv
      @IdeasTv  Рік тому

      have a look at pinned comment.

  • @KARLLARK100
    @KARLLARK100 5 років тому +2

    Very nice and clean vid well done ,.//.,

  • @alveenaalveena1856
    @alveenaalveena1856 3 роки тому +2

    thank you so much for the video.. it's really great but can you share the circuit diagram?

    • @BenBen-bb7bb
      @BenBen-bb7bb 2 роки тому +2

      Bro liked it but didnt give schematic

  • @95Dap8
    @95Dap8 Рік тому

    How 10mm LED instead of 5 mm LED ?
    Do I need to change the associated material value?

  • @kryzenskj
    @kryzenskj 7 місяців тому +1

    Does this actually work? I'm choosing between this or the 555 ic one I want something that's easy so I could submit it in a couple of days

  • @haydenlockwood4973
    @haydenlockwood4973 2 роки тому +3

    What's wrong with the circuit if only one led light turns on?

    • @IdeasTv
      @IdeasTv  2 роки тому

      recheck your connections and read pinned comment

  • @shaynmckeon7779
    @shaynmckeon7779 3 роки тому

    Will this work with a 2n 2222a transistor. Its all I have for now

    • @shaynmckeon7779
      @shaynmckeon7779 3 роки тому

      It worked. I did not have a 9v supply though so I used 100ohm r in place of the 330

  • @KaustavMajumder
    @KaustavMajumder 3 роки тому

    3:38 - Are you connecting to the Transistor Collector or Emitter?
    Is it just me or are you referencing collector as emitter and vise versa? The order from left to right of a BC547 NPN Transistor is Collector, Base, Emitter considering the flat side is facing you.
    If I'm wrong then please correct me.

    • @IdeasTv
      @IdeasTv  3 роки тому

      kindly read pinned comment

    • @warrior4christ777
      @warrior4christ777 4 місяці тому

      Your not wrong it was going so well till the end then he started making mistakes I followed what he did not what he said and it doesn't work either way this is getting annoying if he would just give us a damn schematic.

    • @warrior4christ777
      @warrior4christ777 4 місяці тому

      The circuit does not work ifmyoumfoolow,the instructions you text

  • @masterguy4683
    @masterguy4683 3 роки тому

    Thx mate

  • @mustafamehdi6475
    @mustafamehdi6475 2 роки тому

    can i have a circuit diagram of this circuit pls

  • @MUHAMMADSADIQSYAMIRBINHASNANKP
    @MUHAMMADSADIQSYAMIRBINHASNANKP 3 місяці тому

    LED 3V or 5V or other?

  • @hectordionisio7303
    @hectordionisio7303 3 роки тому +1

    im confused when you connect both emitter but each of them are in the opposite side of the transistor?

    • @IdeasTv
      @IdeasTv  3 роки тому

      read pinned comment

    • @BaileyMcDade
      @BaileyMcDade 3 роки тому

      It appeared to me that in the video the collector of the transistor on the left is connected to the emitter of the transistor on the right.

  • @madapaperclip422
    @madapaperclip422 3 роки тому

    Nice vid. Can 1 transistor be used to make 1 led blink on and off? How?

    • @IdeasTv
      @IdeasTv  3 роки тому

      yes checkout my channel I had made a video on this topic

    • @cadmium7435
      @cadmium7435 10 місяців тому

      No you need two transistors for continuous blinking.

  • @opposingpotato4435
    @opposingpotato4435 3 роки тому

    can i use alternative resistor, instead of 47O i use 1OO? or 33O

    • @IdeasTv
      @IdeasTv  3 роки тому

      yes you can use the most nearby value available.

    • @opposingpotato4435
      @opposingpotato4435 3 роки тому

      @@IdeasTv thank you il try it out

  • @MISTER_IN
    @MISTER_IN Рік тому

    May I know the schematic diagram pls.

  • @aquarine9185
    @aquarine9185 4 роки тому

    Can we use bc109 for bc 547?

  • @PrajeshNSG
    @PrajeshNSG 2 роки тому +1

    Would this work if I use a 220 k instead of 470 ????

    • @richardl6751
      @richardl6751 2 роки тому

      The 470 ohm resistor is to limit LED current. 220,000 ohms might be too much.

  • @johnmclaren4596
    @johnmclaren4596 Рік тому +1

    I dont have bc547 transistors, what can I use instead?

    • @ducomaritiem7160
      @ducomaritiem7160 Рік тому

      2N3904 works.but pinout different. 2N3904 = E B C (flat side facing you) and BC 547 = C B E . 2N3904 is very cheap too.

  • @jumbo999614
    @jumbo999614 4 роки тому +7

    Wish you explain how it works. I can easily follow these steps but i won't learn anything.

  • @mitsulyns9555
    @mitsulyns9555 2 роки тому

    hi what happens if both LED"s only light up, the two doesn't blink, help pls

    • @IdeasTv
      @IdeasTv  2 роки тому

      re-check your connections

  • @ruhansuperrockstar4610
    @ruhansuperrockstar4610 3 роки тому

    Bro u are connecting the collocter to the emmiter and emmiter to the capistor positive

  • @letsgetfitlyn6919
    @letsgetfitlyn6919 2 роки тому

    Hi question?. What type of resistor can also be used? Because i dont have a 470 ohm resistor. Is there another type of resistor i could use besides a 470 ohm resistor? Also i have a 10k resistor i only need a diffirent type of resistor that i could also use besides a 470 ohm resistor, plsss answer!!!

  • @robertheselwood4207
    @robertheselwood4207 2 роки тому +3

    If you take note of where the connections are or go, and ignore the captions which tell or give the wrong information, you should be able to get it to work as I have.

    • @IdeasTv
      @IdeasTv  2 роки тому

      that's why I pinned a comment in order to correct the mistake in video.

  • @sphynxink
    @sphynxink 3 роки тому +3

    I'd be lying if I said I didn't nearly cry when I got this to work. Time to figure out how to string a whole whack of these instead of just two

    • @LBM01028
      @LBM01028 Рік тому

      Dude you’re crazy you might as well make a microprocessor instead. You could wire billions of these togethers and you’d have a real microprocessor with real programmable computer logic but you’d need an understanding of registry’s, memory, etc. By then what would be the point. Just use a CAD program and design a chip and check out Sam Zoloof’s channel for photolithography.

    • @sphynxink
      @sphynxink Рік тому

      Lol when I did this two years ago, this was the first time I’d ever even seen a breadboard. I don’t know if I even know what a microprocessor was 😂
      It was for an assignment I had in college. But good to know!

  • @siandanielloreto7283
    @siandanielloreto7283 4 роки тому

    whats is the exact value of the capacitor ? they dont understand 100uf !

    • @IdeasTv
      @IdeasTv  4 роки тому

      msg me on IdeasTV's official facebook page, i'll send you the clear picture of capacitor

  • @kryzenskj
    @kryzenskj 6 місяців тому +1

    Doesn't work! I took all the same components but only the left led lights up and the right one is off and it doesn't even flash
    Please help! I literally have to submit it tomorrow

    • @IdeasTv
      @IdeasTv  5 місяців тому

      Check pinned comment

  • @Inquire98
    @Inquire98 4 роки тому +3

    "Thank GOD" 🙏🏾, and thank you very much for sharing your support and time 😉 PLEASE provide a circuit diagram 👍🏿

    • @IdeasTv
      @IdeasTv  4 роки тому +1

      you're welcome

  • @hnatyshyn
    @hnatyshyn 2 роки тому +1

    Schematics?

  • @someshtiwari2724
    @someshtiwari2724 3 роки тому +1

    Thanks Bro

  • @fangirlnya
    @fangirlnya 4 роки тому +1

    what are these uses for?please, answer me. thank you.

  • @srikrishnak196
    @srikrishnak196 9 місяців тому

    Hi bro may I know the total cost of all the apparatus

  • @halfdoggaming6155
    @halfdoggaming6155 3 роки тому

    Does it need a same color of LEDs?

  • @mohan6621
    @mohan6621 4 роки тому +1

    Bro how can we keep more LEDs in led

    • @IdeasTv
      @IdeasTv  4 роки тому

      Just add LEDs in parallel combination.

  • @melplishka5978
    @melplishka5978 3 роки тому

    Can u guys plz post a schematic.

  • @Grave81
    @Grave81 2 роки тому

    Will a 2n2222 transistor work instead of a bc547?

    • @richardl6751
      @richardl6751 2 роки тому +1

      Probably but the pinout is different.

    • @Grave81
      @Grave81 2 роки тому

      @@richardl6751 oh ok thx for the info!

  • @tanmayshindolkar118
    @tanmayshindolkar118 4 роки тому +1

    Transistor used in this circuit is NPN or PNP pls help me

  • @privskorp.9865
    @privskorp.9865 Рік тому +1

    Thanks man

  • @warrior4christ777
    @warrior4christ777 4 місяці тому

    You connected the emmiter to the collector whats up

  • @Baotiso1
    @Baotiso1 4 дні тому

    Please can you share circuit diagram?

  • @rizwanfreefire2476
    @rizwanfreefire2476 Рік тому

    Can we get Circuit diagram

  • @Naughty-jq2gg
    @Naughty-jq2gg Рік тому

    Thank you❤🌹🙏

  • @Compuscience-Python-Prog-Exps

    My capacitors are too small. They are tiny compared to yours here. Only one led blinks really fast; the other just stays on. I need the ones you are using. Drag.

    • @IdeasTv
      @IdeasTv  Рік тому +1

      select capacitors by value, not by size

    • @Compuscience-Python-Prog-Exps
      @Compuscience-Python-Prog-Exps Рік тому

      @@IdeasTv Hi, I've been into computer programming, since I ever knew what a computer was, but now, I'm a much older man, and I'm doing Breadboard Electronics with the Raspberry Pi and Python programming with it. You're video showed me how capacitors work, in conjunction with the Two Transistors. You explained it perfect. My two capacitors were very small in size, but the same style yours were, but ten times smaller. Only one light would blink very fast, because of the natural timing of the capacitor dumping back into the other light, so it couldn't blink at all, because even yours had a bit of a difference in the back and forth blinks of the two lights, one blinked a bit faster than the other, when viewing them going back and forth. But you taught me what the capacitors do, and I had also learned that transistors block out noise, like a switch. I don't have enough of them to make my 24 bit binary Led dance, so I'm going to see noise from the other LEDs, but I'm going to show beginner Pi users how to create a Binary Beat program with Python and a Breadboard with lots of whatever colour LEDS one wants to use tok go right nuts on the RPi 4 with me. Check out some of my videos on it, I show all my progress on how I learned to make things with it and show others, how it's not that hard to learn. I'm teaching it, while I'm still learning it myself. I've only been into it for about 7 months now. I have much to learn with electronics in full general, I'm not anywhere close to your Genius yet, but I'm 57, I've been soaking the RPi up pretty heavy though. Please take a look at my latest video on Fun with three 74HC595 shift registers. I learned everything from you BRIGHT PEOPLE. Everything is from you guys helping us all. YOU!!!! xox Thank YOU xox

  • @Study_Free-hp2hr
    @Study_Free-hp2hr Місяць тому

    Lekin ye work nahi kar raha hai same hi banaya hoon
    Kya gadbad ho sakti hai

  • @noobmuffin24p92
    @noobmuffin24p92 Рік тому

    He gets a some nice flashing lights I get a 3 degree burn from my transistor

  • @JohnJohn-gy2st
    @JohnJohn-gy2st Рік тому

    Hello
    If left led run which capacitor is connected

    • @IdeasTv
      @IdeasTv  Рік тому

      I didn't understand your question

    • @JohnJohn-gy2st
      @JohnJohn-gy2st Рік тому

      @@IdeasTv hello how to make johnson counter

  • @karisaardelia
    @karisaardelia 3 роки тому

    Can I use other amount of resistor?

    • @IdeasTv
      @IdeasTv  3 роки тому

      tell me the values of resistors that you have and wanted to use?

  • @vipulreddy2667
    @vipulreddy2667 4 роки тому +1

    Can I use 220 ohms instead of 10k ohms resistor

  • @discobiscuit3134
    @discobiscuit3134 3 роки тому +2

    Does anyone know if its a 16 volt Capacitor?

  • @vinayashishanandam9427
    @vinayashishanandam9427 Рік тому

    I need circuit diagram please help

  • @ammaralyasiri4191
    @ammaralyasiri4191 4 роки тому +1

    alternative Transistor BC547 thanks

  • @igxniisan6996
    @igxniisan6996 3 місяці тому +1

    This ckt is kind of unbalanced cuz the duty cycle of one led is longer

  • @argielomugdang6887
    @argielomugdang6887 4 місяці тому

    I did the steps but its not working , it took me 3 hours to repeat the process and still nothing happens ,
    I thought everything will be good ,

  • @sutatteppanyathip1648
    @sutatteppanyathip1648 Рік тому

    is it okay to use different transistor?

  • @jessonranas2075
    @jessonranas2075 4 роки тому +1

    Can I use any color? (LED)

  • @EngineeringMadeEasy13
    @EngineeringMadeEasy13 3 роки тому

    How can i insert a switch in this circuit?

    • @wantedq8332
      @wantedq8332 3 роки тому +1

      try connecting the battery to the switch the connect the switch just as you would with the battery but using the switch ; + to LED and (-) to emitter.