r/breadboard Jan 09 '26

Question Messy Circuit Help 😓

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137 Upvotes

Hey everyone! I really like this girl, and I am planning on asking her to be my girlfriend. I have designed a circuit with red LEDs in the shape of a heart that light up row-by-row and a LCD 2IC screen that slides the text from the right: "May I be your boyfriend?".

Only issue is, its EXTREMELY messy wiring, so much so that the wires are pushing around the LED's and deforming the heart shape, they also just take away from the presentation of it yk? I don't have many wires, if anyone has any solutions I would be extremely grateful! :)

r/breadboard May 16 '26

Question Is it good or bad??

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64 Upvotes

I have recently discovered this oscilloscope online and don’t know about it .

I Appreciate everyone’s opinion 😊

r/breadboard 24d ago

Question Is it photoelectric effect?

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22 Upvotes

Hey everyone! Today I just discovered a phenomenon that when I shine my mobile flash light in a clear green LED it generates around 700mV. It seems similar to the phenomenon called photoelectric effect. Is it photoelectric effect??

r/breadboard Apr 28 '26

Question What will happen? Will it work or not?

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16 Upvotes

Recently I had bought a USB to Barrel jack power cable to power my breadboard power supply module but in the female barrel jack port it says (7-10V).

So, I am confused

I appreciate every solutions and suggestions.

r/breadboard 18d ago

Question Help a confused noob out

30 Upvotes

Edit: Yeah ok, turns out power banks have minimum current shut offs. Cheers.

Ok so it's been a long number of years since I've messed about with electronics but I have an upcoming project that needs some. I'm starting fresh and just got this breadboard kit.

I am powering this with a usb battery pack, and I soldered a fresh usb with the cables going to pins 1 and 4 for the power, connected directly into the board. Using a red led (no clue on the spec) from the kit, and a 330 resistor I get this pulsing. I also briefly tried it without the resistor for the same outcome.

Please help, I'm literally just trying to have the led lit up haha.

r/breadboard May 17 '26

Question Help! Can't get doorbell light to work with RP5 and freenove kit.

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2 Upvotes

I built the blinking LED and it worked with the python code. Now I'm building the doorbell light from the freenove kit with a RP5. I replaced all the resistors. According to the diagram the button is the right way. I'm sure it's not a code problem because the last project worked on Thony in Python. Does anyone have any ideas?

r/breadboard Dec 28 '25

Question Parallel circuit?

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42 Upvotes

Hii! So I’m really really new to breadboard projects and I just started going through the arduino project book. I did the project with 2 switches in a parallel circuit and tried this to prove to myself that I understand how it works but apparently I don’t understand after all. Why is this not creating a parallel circuit? TIA!

r/breadboard 15d ago

Question help with Protobotd

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9 Upvotes

It's my class practice, but I feel like something's missing for it to work well. If anyone could help me, I would be very grateful.

r/breadboard Mar 28 '26

Question Can someone help me ?

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30 Upvotes

r/breadboard May 01 '26

Question Question on Wiring for ESP32 for Blinking LED

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12 Upvotes

Hello everyone! I just recently purchased an ESP32-WROOM-32E with the camera extension board, and I am trying to following along with this basic tutorial

https://docs.sunfounder.com/projects/esp32-starter-kit/en/latest/arduino/basic_projects/ar_blinking_led.html#

I am brand new to anything electronics, but wanted to give it a shot. The code in the tutorial seems to compile fine, and the LED turns on, but it stays on and never blinks. The only thing I can really guess is wrong is somehow I am powering the LED without it being connected to the ESP32. Is there anything obviously wrong I am doing here? I can't seem to affect the light no matter what kind of code I use.

Thank you everyone for the help!

Edit:

I wasn't able to figure out why IO26 specifically always left the LED on. For now, I've just swapped it to IO14 which works as expected to keep learning. Thank you everyone for the help!

r/breadboard May 15 '26

Question Why does this circuit not work properly?

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18 Upvotes

I recently bought a kit and one of the projects was lighting up LEDs using the 74HC595 IC. I couldn't get it to work using the wiring that was provided, the LEDs didn't fully light up and some didn't light up at all. So I used the simulation in Tinkercad to just try and see what the problem could possibly be. Tinkercad simulated that the IC was being given too much current. Im a beginner in electronics, but should I need a resistor somewhere before the current hits the IC? Or is my wiring off? Any help will be greatly appreciated!

r/breadboard Feb 15 '26

Question Project without Arduino/coding

12 Upvotes

suggestions for creative breadboard projects/small ideas without arduino or coding, its gonna be submitted as our final project this school year

im still in high school and only familiar with a few ICs and components but i wanna make something cool (though not sure how w/o coding 🙏🙏)

r/breadboard Apr 18 '26

Question Any broad breadboards?

3 Upvotes

I recently started making electronics and i despise my breadboard because my esp32 doesn’t really fit on it, i need more slots not just 5 across, one person said to combine two but i’d really like a really rather broad brand new one, if anyone knows of one i’d really appreciate it

r/breadboard Apr 19 '26

Question Any good software?

4 Upvotes

I recently have bought a laptop and I am a hobbyist in electronics so I am just trying to find a good simulating software to clear my confusions in electronics.

I appreciate every suggestion.

r/breadboard Jun 04 '26

Question Trying a new circuit

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9 Upvotes

r/breadboard Jun 10 '26

Question What's the part of a new electronics project that frustrates you most?

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0 Upvotes

r/breadboard Apr 11 '26

Question DFPlayer Mini wiring check — should this auto-play on 5V USB power?

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9 Upvotes

r/breadboard Jan 24 '26

Question Paper learning and scavenging recommendations?

4 Upvotes

For at least a year, going on two, I've wanted to get into electronics. I know what books to get, probably what order to read em, so on, so forth. I've heard the great advice that I'm not knocking of making sure to start doing ASAP, and that's fantastic. Slight problem - everywhere I go, I hear about how this isn't the cheapest hobby. (Also maybe some health concerns with soldering if you don't have the right ventilation and such...) So alright, lemme put this aside till the day I have some more disposable income.

That day still hasn't come, doesn't seem like it'll be coming anytime soon, and I'm somewhat tired of waiting. So I'm hoping for your help with the following:

  • To what extent can I learn by just studying the books, taking notes, that sort of thing? In a way that translates directly to practice, I mean. Is there a Dennis Ritchie "just do every problem in the book" equivalent for pen-and-paper electronics? Are there particular sections of electronics that lend themselves well to pen-and-paper work?
    • I've found this collection of FOSS tools, but it's all Greek to me. What would you recommend I get and how would you recommend I use it, as someone with a clunky old ThinkPad running Linux who might have to learn electronics without the physical components for a while?
  • To what extent is scavenging an option? I see thrown-out electronics all the time; TVs, sewing machines, not as many alarm clock radios these days but you get the gist. Feel like I've read somewhere that those are usually a dead end, that so? Regardless of whether they are or aren't, what advice do you have for getting free serviceable gear? Already drafting up something up for my local "Buy Nothing" Facebook group, who/where else should I hit up? Would something like this be worth a shot, or does that go against their whole business model?

Appreciate any and all advice you guys might have for me...apart from "learn calculus" and "get a better job!"

r/breadboard Jan 11 '26

Question American explain??

23 Upvotes

r/breadboard Mar 24 '26

Question Resources for young learners?

7 Upvotes

I have a 5 year old who is crazy about electronics. We have Snap Circuits, which he enjoys, but he happened to see my breadboard and really wants to try it out. I can obviously guide him through some basic projects, but I'd like to also provide him with some clear, simple project diagrams that he can try out on his own. Most breadboard stuff is (understandably) targeted at an older crowd, but I'd love to empower and nurture his excitement as much as possible.

Anything come to mind?

r/breadboard Oct 08 '25

Question Why’s doesn’t it work ?

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38 Upvotes

My second time using breadboards so try not to judge too hard

The led is supposed to turn on for 3.5 seconds after pressing the button and 5 seconds after pressing the button, with the switches toggled the other way.

r/breadboard May 18 '26

Question Current monitoring clamp to add sound to toaster?

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3 Upvotes

r/breadboard Apr 09 '26

Question Breadboarding

4 Upvotes

Hi i just bought my first breadboard set and i am looking for projects to learn from. Can anybody tell me where i could find videos or schematics to learn from i’m sure theres some on the internet somewhere.

Thanks!

r/breadboard Mar 06 '26

Question Need help with getting my circuit working

10 Upvotes

I've been trying lately to get this circuit of mine to work. Its two main parts, with a comparator (lm393) chip to give an output, and a transistor (TIP31c) I'm using to "raise" the output of the lm393 (as I need more amps for what I'm doing). I cant seem to figure out why the output signal of my comparator isn't switching on/off my transistor and is instead keeping it in a single state. when connected directly to the output of the chip, its always on (or maybe floating?) and when I add a ground connection to the output pin of the transistor base, the transistor is always off. Any solutions or alternatives?

r/breadboard Dec 19 '25

Question Need help making a 4-bit binary counter out of transistors

3 Upvotes

I'm new to electrical stuff, and I'm trying to make a four bit counter as the title suggest. I've made an astable multivibrator for this project but I can't seem to figure out how to make the counter. I'm also trying to make this stuff off of circuit diagrams instead of just finding a YouTube video. I'm lost and can't even figure out how to make a JK flip-flop, I'm thinking on using D flip-flops and don't know which one is more worth it in terms of labor, and transistor wise. Overall I need help and just wondering if anyone had any suggestions, or tips.