DIY Digital PCB Exposure Box

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  • Опубликовано: 20 май 2020
  • Build a digital UV/LED exposure box for PCB fabrication. Get faster and more consistent fabrication results with this Arduino based project! The project gives you exposure control and functional exposure timer.
    _______________________________
    Learn To Fabricate Single Sided PCBs
    (My Tutorial: • DIY PCBs At Home (Sing... )
    _______________________________
    PCB FILES & ARDUINO CODES:
    Link: bit.ly/2ZrGrXS
    _______________________________
    PARTS & MATERIALS:
    - Plastic Container (bit.ly/2TtMDuA)
    - Arduino Nano (bit.ly/2Xlq789)
    - White LED Strips (bit.ly/2TvM7Mz)
    - UV LED Strips [Better] (bit.ly/3cW2zgN)
    - 12V 2A Power Brick (bit.ly/3bSh8kb)
    - TIP31C NPN Transistor (bit.ly/2zm4dJZ)
    - 10k Ohm Trimmer Resistor (bit.ly/2ZyFFrQ)
    - 10k Ohm Potentiometer (bit.ly/3eabefY)
    - 10k Ohm Resistor (bit.ly/2LQObuA)
    - 470 Ohm Resistor (bit.ly/2WQjifY)
    - 100 Ohm Resistor (bit.ly/3cW4KRv)
    - Male Headers (bit.ly/3cTyjmX)
    - Power Switch (bit.ly/36tnjKA)
    - Piezo Buzzer (bit.ly/3bT7EoM)
    - DC Jack (bit.ly/2WQxTId)
    - PCB Materials ( • DIY PCBs At Home (Sing... )
    _______________________________
    #Arduino #PCB #Electronics
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Комментарии • 149

  • @TechBuilder
    @TechBuilder  4 года назад +11

    Got some minor corrections on the Parts Placement diagram found on the video. Please base your parts placement from the downloadable file package.
    I forgot to add some footnotes. To avoid confusion, I changed some of stuff.
    Link: bit.ly/2ZrGrXS
    (Same link from the descriptions tab)

    • @subsPLEASE-zk8fx
      @subsPLEASE-zk8fx 4 года назад +1

      How much does photoresist liquid cost are all the same do they work for diferent Metals specially including gold and others like chromium

    • @jennierlc2761
      @jennierlc2761 4 года назад

      Gud day sir, that's a nice video tutorial but can I ask you if what computer software you are using to design and to know the exact values of components you need to use on your circuit projects? Can I know that? Thanks

    • @jennierlc2761
      @jennierlc2761 4 года назад

      Like those resistor values and even the potentiometer and transistor how can you calculate its values needed for your project

    • @k7ilo_Las_Vegas
      @k7ilo_Las_Vegas 2 года назад

      Hey there and thanks for a great project but are you going to upload the gerber files to your shared folder? Also, you may want to design it with a LM7805 style power supply for any style of Arduino device such as the Nano you are using. Thanks

  • @jcmilleker5449
    @jcmilleker5449 4 года назад +3

    Nice design, my wife and I built something similar inside a large, deep plastic stacking parts organizer. UV LED's along the inside of the drawer, to use we turn it over and slide the project underneath (on a letter sized clipboard). She uses hers for a photographic exposure box for workshops, so thankfully it doesn't need anything as precise as this, but I was certainly tempted!
    Also tempted by making the tray rocker, would certainly get good use in the darkroom!

  • @Eggstertjie
    @Eggstertjie 3 года назад +1

    Great project and very well conveyed! I can't wait to see your soldering station tutorial.

  • @arunkumar050
    @arunkumar050 4 года назад

    Your automatic hand sanitizer dispenser is worldwide hit.all credit goes to you.i started to manfacture your model.thank you for saving the world.

  • @gordslater
    @gordslater 3 года назад +2

    Increasing the distance from light source to PCB gives better resolution of fine tracks and less "undercutting" of them. Basically, the light rays ar more parallel and scatter less around the mask.
    You'll need to increase exposure times as per inverse square law though. Also with longer times you need to avoid stray light getting in so use in darkened room or make from opaque material.
    Best light source I ever used for UV PCB was a DeVere large format photgraphic enlarger with colimator/condenser head. Distance form light source to PCB was 120cm. The resolution of the tracks was insane (mid 1980s)

  • @RandomDIYProjects
    @RandomDIYProjects 4 года назад

    Fan mo ko since ginawa mo yung "smart" shoe generator. Galing talaga ng mga gawa mo. More vids Angelo :)

  • @Vindix007
    @Vindix007 4 года назад

    Well done.
    Greetings from Brazil.

  • @frankfontaine1559
    @frankfontaine1559 2 года назад

    holy shit like literally everything i was planning to make was shown in the intro, subscribed

  • @deadchannelihaveanewchanne4529
    @deadchannelihaveanewchanne4529 4 года назад +23

    You got a lot of materials to invent, It's all interesting!!

  • @tanmay______
    @tanmay______ 4 года назад +1

    loving all the new videos. excited for the ebike

    • @TechBuilder
      @TechBuilder  4 года назад +1

      Thanks!!!!! I see you're updated, hahaha ♥️

  • @kimcyrenejebulan3273
    @kimcyrenejebulan3273 4 года назад +2

    New subs here 😍 i am enjoying all your vids 😍

  • @carioca10000
    @carioca10000 4 года назад

    Fantastic! You “destroyed” what I intended to do. Congratulations! Thank you!
    👍🙏✌️👏🤝😀🤪!

  • @castlecodersltd
    @castlecodersltd Год назад

    Another good video, thanks ☺

  • @noyacat7269
    @noyacat7269 4 года назад

    Man you are the one........perfect job😉👍...... bravo 👏👏👏👏

  • @Bombastic1886
    @Bombastic1886 3 года назад

    very informatic video. I intend to make a UV exposure box for stamp making. thought to put an analog timer but I will use this digital time with nice known which I like. Could you guide me to make a digital time with this technique with a relay to control any appliances

  • @luansalja60
    @luansalja60 3 года назад

    Great work !!! thanks for sharing your knowledge. Do you think is possible to modify by the use of an rotary encoder to select exposure presets we saved (like pcb dimensions or by pcb brand etc) because i dont think that we use a lot the brightness potentiometer (always at 100%)...

  • @hidoHido-vm4en
    @hidoHido-vm4en 4 года назад

    about LED, can i use old LCD backlight as exposure? i can remove filter and COF that give picture from it

  • @MrGerardobrandao
    @MrGerardobrandao 3 года назад +1

    Hello, Nice work! I have done mine digital PCB exposure Box based on yours( i will post pictures later)
    I will give you a tip...you are using a TIP31C wich is a low gain base current (low Hfe)...Wich mean you can´t deliver the full power to the leds, because if you don't provide enough current at the base, you won't have full current going to the Led's strip.
    If you use a TIP 101, wich is a NPN Darlington array transistor, wich is same package, the current delivery increase drastically.
    I have made led panels for up side and low side for exposing double sided boards at the same time, and switched the NPN transistor for a logic level N channel FET logic. just added a 10K resistor from source to gate and everything is going fine...both panels consume 4.3 Amp.
    Other thing it should be changed is that the UV leds shouldn´t be on when power is applied, but only when you press the start button....Because if you take 20 seconds to put the board and align the film, and put the timer for 1min and 30 seconds, the board will be exposed 1min and 50 seconds...
    Best Regards and keep doing the good work ;)

  • @abdullahrafiuddin1654
    @abdullahrafiuddin1654 Год назад

    Very good video.and want more

  • @simoncoote9973
    @simoncoote9973 Год назад

    Hi, I think you have done a great job with this light box. You explain it very well and I have just build one from your designs. BUT I have a problem. I've programmed the nano and the dimmer works but the timing does not. All I get is a flickering display with some Ö or solid blocks. Any help would be great. Keep up the fantastic work!!

  • @mdaslamknl
    @mdaslamknl 2 года назад

    Excellent
    When i connect 12v dc, smoke coming from Arduino fired why
    Thanks

  • @diego.almeida
    @diego.almeida 3 года назад

    Hi! great video. I'm kind of new to this... why some pcb require UV light and some can be done with only with fluorescent lamp? and why some have to invert the color of the circuit in the printed paper but your didn't seem to need it, i.e, what you printed on paper is what you got on the pcb? Thanks

  • @waltervaldivia2399
    @waltervaldivia2399 3 года назад

    Great 👌👌... I loved it 👏👏👏

  • @adalbertfuzesi9006
    @adalbertfuzesi9006 3 года назад

    Hello, nice project! I wish you a happy new year! I would be interested in what paper you print the drawing on?

  • @jekdiy
    @jekdiy 4 года назад

    Good project

  • @mr_mnky
    @mr_mnky 3 года назад

    great job... what size container is that & where did you get it?

  • @raffaelebarlotti9017
    @raffaelebarlotti9017 3 года назад +1

    Hi, I like it very much! Did you use normal LEDs or are they particular LEDs? Thanks.

  • @The1manue
    @The1manue 3 года назад

    Hi! Please, when you will upload the video about the DIY soldering station?

  • @omsingharjit
    @omsingharjit Год назад

    Using blue or black led would be great.

  • @TheElectronick
    @TheElectronick 4 года назад +5

    no words to say bro....
    Really amazing ❤❤❤

  • @pasyensyatv9092
    @pasyensyatv9092 4 года назад +1

    can i also use a UV light bulb instead of led strips?

  • @thistle1320
    @thistle1320 3 года назад

    I'm looking to build one of these, but I'm looking to make it smaller, primarily in height. I'm just wondering if there's any reason yours are as high as they are? Is there a reason the pcb should be further away from the leds? Or would it be okay to make it smaller so the pcb is closer to the leds?

  • @c_users_nt_official
    @c_users_nt_official 4 года назад +1

    Nice project.

  • @gayansenanayaka9435
    @gayansenanayaka9435 4 года назад

    good job

  • @ErsinFahredin
    @ErsinFahredin 4 года назад +4

    nice project man!

  • @raffaelebarlotti9017
    @raffaelebarlotti9017 2 года назад

    Hi, I managed to get the circuit working but I would like to know 2 things:
    1 - The LEDs to be used are normal high brightness LEDs or UV LEDs;
    2 - Are there 12V at the input of the circuit?
    Thank you.

  • @goldenretriever3041
    @goldenretriever3041 2 месяца назад

    what components should i use if I have a 5V UV LED strip?

  • @starstuffs39
    @starstuffs39 3 года назад

    for the buzzer can i use TMB12A05 Instead of 12085? and btw do you have olshop link for push button switch?

  • @viswanathancr2801
    @viswanathancr2801 2 года назад

    good video

  • @amilasadaruwan6793
    @amilasadaruwan6793 4 года назад

    good job bro i liked your video and i subscribed your Chanel

  • @ryledesirabelli4151
    @ryledesirabelli4151 3 года назад

    When are you gonna do the soldering station ?

  • @htdiy8722
    @htdiy8722 3 года назад

    hi, can you please make a adjustable power supply using 14 volt transformer and lm317 only

  • @healerhealer8345
    @healerhealer8345 3 года назад

    thanks for the programe

  • @boots7859
    @boots7859 3 года назад

    Nice, simply build. Only suggestion would be to use a container that has dark/black wall, and maybe a drop down swinging door. That way in the event you have something cooking, and get pulled off on another task, interruption or appointment, you can be assured that it will not be over-exposed.

    • @nobytes2
      @nobytes2 2 года назад

      I mean you can always spray paint a clear container, but yeah best to get a dark one.

  • @ElectroRetro
    @ElectroRetro 4 года назад +3

    Nice!!

  • @danilodelrio8284
    @danilodelrio8284 3 года назад

    Hi great video, thanks. Q: what program do you use to edit the videos ? , How do you do the animation/intro with the background white at the begining of this video? Thanks.

  • @Frank183847572828
    @Frank183847572828 3 года назад

    Damn son ... Thumbs up !!!

  • @MuhammadDaudkhanTV100
    @MuhammadDaudkhanTV100 4 года назад

    Excellent

  • @joelfariolen1131
    @joelfariolen1131 3 года назад

    Can you build an analog multimeter as accurate as Sanwa. Tnx

  • @josephdahiroc107
    @josephdahiroc107 3 года назад

    Sensei, pa adopt ng concept ah. Thank you.

  • @ehsanlion4391
    @ehsanlion4391 3 года назад

    Best❤️

  • @sornrachakwilai4608
    @sornrachakwilai4608 3 года назад

    Can I use a 12V 10A power supply?

  • @atec9228
    @atec9228 4 года назад

    Hello I love your project and in fact I am building an imsoladora like that since it seems very interesting to use an Arduino and to be able to easily control the exposure of the boards. You could upload the schematic files to be able to make some modification. Thanks and best regards. Great video.

    • @atec9228
      @atec9228 4 года назад

      I mean the proteus file, when I open the one that currently exists, only the pcb appears and not the schematic. Thank you

  • @munirahaliah2366
    @munirahaliah2366 3 года назад

    this project can i change the arduino with PIC ? its will
    work or not?

  • @NEWBI3GAM1NG
    @NEWBI3GAM1NG 4 года назад

    does it works to esp8266 to replace the Arduino? thanks in advance new subscriber here.. nice video..

  • @starstuffs39
    @starstuffs39 3 года назад

    can we mask the pcb with that stuffs for the next level?

  • @VarunPandithurai
    @VarunPandithurai 4 года назад

    Please make a video on Diy green mask for pcb

  • @FIXDIY
    @FIXDIY 4 года назад

    Good

  • @whiteheart3190
    @whiteheart3190 4 года назад +1

    Perfect idea and video
    Thanks for the details (the files), but I've a question about the light source
    it's supposed to use ultraviolet light source,
    is the led is a kind of this or it's a special kind of led ?

    • @LostInLeiden
      @LostInLeiden Месяц назад

      im also confused why there are white leds

  • @EasyOne
    @EasyOne 4 года назад

    good

  • @RadicalRacoon
    @RadicalRacoon 4 года назад

    Where did you get the blue desk mat?

  • @jamesaugustineordeles3242
    @jamesaugustineordeles3242 Год назад

    I'm doing the same exact circuit of yours, the difference is I'm using a Arduino Uno. Why my TIP31C is so hot, overheating? And also my 2 potentiometer is smoking. Whats wrong?

  • @ferx8600
    @ferx8600 4 года назад

    where to buy the display, what model? Thanks a lot

  • @bowtieantenna8995
    @bowtieantenna8995 3 года назад +1

    Bro, i found you while i'm looking for ideas for our thesis project proposal. Can you vlog doing some tips/tricks using EagleCad? Thanks bro for your response. God bless you! :)

  • @k7ilo_Las_Vegas
    @k7ilo_Las_Vegas 2 года назад

    Does anyone know where in the States PCB's can be done cheaply? I just want to have a couple of these made to make this exposure box and dont want to start etching my own until i have it and the agitator made 1st. Thanks

  • @brentbalaque9400
    @brentbalaque9400 Месяц назад

    How would you know if the pcb is property exposed?

  • @dontdeletethisaccount2307
    @dontdeletethisaccount2307 4 года назад +1

    Nice

  • @mandreko
    @mandreko 3 года назад

    I built this, but any time I turn my brightness knob less than 90%, it shuts off everything, and shows weird symbols on the screen. Otherwise, it works fine. I may try a different 10k potentiometer.

  • @iamasgroup
    @iamasgroup 2 года назад

    Nice project, I like it but Is much better to use a MOSFET instant of this low current transistor.
    Also, you have to correct your code.
    The lights have to remain off until you start the new time cycle.
    Thank you for sharing :)

    • @TechBuilder
      @TechBuilder  2 года назад

      I went with a BJT since it was more common for others to follow. But yeah, a MOSFET would much be better.
      The light was intended to turn off when the timer goes off, this was done to prevent the PCB from getting overexposed.

  • @FlyingBesrs
    @FlyingBesrs 3 года назад

    what a soldering station ?

  • @IgnacioSanchezWebDesign
    @IgnacioSanchezWebDesign 4 года назад

    Nice video. Thanks for sharing! I wonder WHY I didn't find your channel earlier! // Question: Any portable drill you can recommend me for my PCB projects?
    Thanks!

    • @TechBuilder
      @TechBuilder  4 года назад +1

      Thank you! For PCB fabrication, any cheap generic drill would do. I wouldn't recommend using a Dremel 3000 since it's too big. You need something small and fits at the palm of your hand, not unless you plan to buy those drill press Dremel attachments. I hope this helps! :)

    • @IgnacioSanchezWebDesign
      @IgnacioSanchezWebDesign 4 года назад +1

      @@TechBuilder Thanks for responding! I'll keep in mind your suggestions and Google for something smaller than those that you mentioned. Hopefully I'll find something. Thanks again and keep up with your channel and projects!

  • @zk_6312
    @zk_6312 3 года назад +1

    I had read somewhere that it is necessay to use 365nm uv leds for this. Watching your video though that does not seem to be true. So, you are using white led strips then? Would uv led strips work just as well?

    • @LostInLeiden
      @LostInLeiden Месяц назад

      im wondering exactly the same

  • @martinrobomaze7184
    @martinrobomaze7184 4 года назад +2

    Really nice project, but shouldn't you use UV LEDs, because the photoresist cures with UV light?

    • @LostInLeiden
      @LostInLeiden Месяц назад

      yes, im also confused about this

  • @Bzsaul
    @Bzsaul 2 года назад

    I can use ne555 and relay no arduino

  • @FelinoAnticomunista
    @FelinoAnticomunista Месяц назад

    hi: uv wave lenght ???

  • @Redditard
    @Redditard 4 года назад

    Ahh thata the PCB u made in previous video

  • @FusselCNC
    @FusselCNC 4 года назад

    No UV Lights? With normal white LED's? cool :)

  • @wanzaidil2766
    @wanzaidil2766 Год назад

    hello sir, can i get the schematic diagram for this project?

  • @ryujiyamazaki583
    @ryujiyamazaki583 4 года назад

    Hi, nice video's 👍, can you also please post the link where we can buy the jumpers as I'm having a hard time finding them ☹. Thanx in advance 😁

    • @TechBuilder
      @TechBuilder  4 года назад

      Just buy a solid wire and strip them from their insulation. You can also use the leads from the resistors, capacitors or diodes once you cut them :)

    • @ryujiyamazaki583
      @ryujiyamazaki583 4 года назад

      @@TechBuilder I know that 😀 but isn't there a way to buy the roll of a wire like this? Cause the thin wires are not strong enough > for example if I want to solder a micro usb port I can solder it on the board with a loop to make the connection more durable, I hope U know hat I mean 😊

  • @spaciainfotech8666
    @spaciainfotech8666 4 года назад +2

    Plzz make a video on how did you make health band

  • @anthonyvillanueva4500
    @anthonyvillanueva4500 4 года назад

    wow

  • @tanmay______
    @tanmay______ 4 года назад

    this is a slightly off topic question, but would you know how brushless gimbals do fine position control? I searched a lot but couldn't find a definitive sensorless brushless motor driving solution that could be used to make gimbals for small cameras say a GoPro. Since you've worked on electric vehicles involving brushless motors, i thought you could send me in the right direction :p

    • @TechBuilder
      @TechBuilder  4 года назад

      I made a gimbal from scratch before. As far as it goes, position tracking is all up to the gyroscope sensor while the BLDC controller controls the motor's direction and speed. The code creates a closed loop feedback structure between the motor, controller and the gyro. That's the conventional way. On the other hand, there's FOC (Field Oriented Control) but it much more complicated and is a whole other story (probably too overkill).

    • @tanmay______
      @tanmay______ 4 года назад

      @@TechBuilder I understand how the closed loop system works, but I'm still confused how the esc manages to hold the motor position, after the error in the camera position is zero. All escs I've seen only control the speed of the brushless motor, and neither the torque nor the position of the shaft (I make multirotors)

  • @benj7483
    @benj7483 4 года назад +1

    Hello, sir.
    I'm really into boxes! Thanks for this video.
    Btw, sorry we got deferred in LBYEC36 :((

    • @TechBuilder
      @TechBuilder  4 года назад

      Sure Benj! Haahahaha! Hope this covid thing ends so we can get back to our lab classes 😂

  • @_munna_
    @_munna_ 3 года назад

    👌👌👌👌

  • @priyalchaware8373
    @priyalchaware8373 4 года назад

    Please show also that how to make a life size avengers rc hulkbuster

  • @jumbo999614
    @jumbo999614 2 месяца назад

    Hi, I download your pcb PDF file. When I print it in A4 paper, the size is wrong. Way too big.
    Please help.

  • @dorotarumian7362
    @dorotarumian7362 Год назад +1

    Nie lepiej zamiast ardiuno nano użyć razbery pi nano większe możliwości i więcej ramu

  • @mdaslamknl
    @mdaslamknl 2 года назад +1

    Excellent
    There are no gerber files inside the folder
    Can you give eagle .brd file so that we can make trace little big in easyeda
    Thanks

    • @k7ilo_Las_Vegas
      @k7ilo_Las_Vegas 2 года назад +1

      Im trying to work that out. If i can figure out how to get this PCB layout into Eagle or EasyEda, Ill let you know. I was looking for the gerber files also.

    • @mdaslamknl
      @mdaslamknl 2 года назад

      @@k7ilo_Las_Vegas Thank you

    • @k7ilo_Las_Vegas
      @k7ilo_Las_Vegas 2 года назад

      @@mdaslamknl NP but I think I am going to just settle for putting mine on a solder-able breadboard since its not that big of a circuit and with the cost and wait for 1 or 2 of these boards being built and shipped to me, i could could build plenty of these. Ill work out at least a dxf file and it can be imported into any design program to my knowledge

  • @AnilArya51
    @AnilArya51 4 года назад +3

    19 seconds ago 3rd comment ...
    Bro plz make video how to make a 3 d printer at home...

    • @TechBuilder
      @TechBuilder  4 года назад +1

      It's on my list! Probably by the end of the year! :)

    • @AnilArya51
      @AnilArya51 4 года назад +1

      @@TechBuilder Bro plz don't make it too long make it first in the list... please...
      Ask in a poll to community..

  • @carrycartoon
    @carrycartoon 4 года назад +2

    Make video on how do you shoot your videos 😁

  • @dorotarumian7362
    @dorotarumian7362 Год назад

    A led rgb niebieskie mogą być

  • @guzmanjoemaryc.6776
    @guzmanjoemaryc.6776 3 года назад

    CAN I REQUEST FOR A HELP? I GOT A PROBLEM UPLOADING THE CODE ON MY ARDUINO NANO, WHAT SHOULD I DO, PLEASE HELP ME😭😭😭

    • @TechBuilder
      @TechBuilder  3 года назад +1

      If you got a clone, kindly install the CH340 driver

  • @mdaslamknl
    @mdaslamknl 2 года назад

    Its not working
    when i connect 12v nano fired
    can you tell how can i make it working
    Thanks

    • @k7ilo_Las_Vegas
      @k7ilo_Las_Vegas 2 года назад +1

      I'm not sure why his Nano hasn't blown up also being fed with 12Vdc according to the schematic and the PCB layout pic but the Nano's max input voltage is 9Vdc but with every Nano that I have used, anything over 7.5Vdc has caused me issues so I use a simple 7805 power supply or an adjustable bulk power supply you can get from Amazon and feed the Nano and any other devices with the 5Vdc from the 7805 / bulk power supply and never feed any other device in my project from the 5Vdc output of a Nano. I hope this helps you from frying anymore Nano's.

    • @mdaslamknl
      @mdaslamknl 2 года назад

      @@k7ilo_Las_Vegas Thank you
      for reply and clarifying
      Thanks

    • @mdaslamknl
      @mdaslamknl 2 года назад

      @@k7ilo_Las_Vegas Finally i made working
      In youtube he mention wrong to put 12v, it will burst everything lcd, arduino nano
      I made Arduino nano with 5v , its working
      In potentio control if i make low it will restart both working as brightness
      I will look and modify, i will use i2c for lcd

  • @raffaelebarlotti9017
    @raffaelebarlotti9017 3 года назад

    Hi, I did the circuit twice but it doesn't work, there is no output current, why? Thanks.

  • @bingtanquingcen8323
    @bingtanquingcen8323 4 года назад

    Hi Angelo How is your BB8?Are you part of the BB8 builder's club?Kuya Kenneth in E-Gizmo says you sometimes stop by there,I built the BB8 for myself,because the Sphero which I always wanted my mom said It is too expensive so I found you and did it.Do you know Rimstarorg?I now have Spero BB8 special edition
    Unlike you I know how to invent but sadly I never had a real invention Of my own,by the way my tito is a coach for the Green Archers in your school.I really love the movie Meet the Robinsons walt Disney because the way Lewis invents is what I want to do.Engineering.Do you know that Movie?

  • @sonnyobrien
    @sonnyobrien 3 года назад

    CHICKEN AND EGG. How can I make the pcb if I don't have the exposure box!!

    • @TechBuilder
      @TechBuilder  3 года назад

      Like I said: use a flourescent lamp. Or just do the toner tranfer method.

  • @TechsScience
    @TechsScience 4 года назад +1

    Will you collab with me?

    • @TechBuilder
      @TechBuilder  4 года назад +1

      G! That would be great! Judt email me if you have some ideas in mind. Nice vids you got there! Subbed!

    • @TechsScience
      @TechsScience 4 года назад

      @@TechBuilder Thanks for your reply, wait i will mail you

    • @TechsScience
      @TechsScience 4 года назад

      I text you on Instagram (i don't get your email address)

  • @niyassalim4933
    @niyassalim4933 4 года назад

    You heard me

  • @og9806
    @og9806 3 года назад

    There's no schematic.

  • @raffaelebarlotti9017
    @raffaelebarlotti9017 3 года назад

    TIP31C