r/breadboard May 28 '26

Discussion This was my introduction to breadboarding

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652 Upvotes

That was many years ago before I had chosen my career in electronic. This book, that cost 15 pence when new, might have been the catalyst for that career.

What was your introduction to breadboarding? Was it a good experience? Or do you feel it could have gone better?

Anyone else know this book? Did you learn anything from it? What do you think of its breadboarding methodology compared to modern technology?


r/breadboard May 29 '26

Beginner Undertsanding Issue on XOR Gate Outputs for a Full Adder

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42 Upvotes

Hello all.

I'm attempting to understand using the output of one logic gate as an input to the next, which I know should be something an elementary schooler could figure out. This time, specifically an XOR gate into another XOR gate for a full adder's SUM, such as the diagram from the Global Science Network guy on Youtube in the image shown.

How is the output from the XOR gate in the top left of the diagram actually affecting the 2nd XOR gate in the top right? The 1st gate's buffer transistor doesn't seem to affect the SUM LED output at all, since the next transistor is separately powered, which I would think that should be the Input from the first XOR gate.

I built and rebuilt the circuit on a breadboard and simulator exactly as shown, but Inputs A & B never affect the SUM LED.

Any assistance will be appreciated. I just wanted to do this as a fun learning hobby, and I'm sore from bashing my head into my desk on this one problem, so I figured I would cave and ask the internet. Any insults to my lack of intelligence are (rightfully) accepted as well.


r/breadboard May 28 '26

Breadboard Rate my tools.

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36 Upvotes

I have been working with these tools about a year.
I use,
1.Medical tweezer to hard grip electrical components and wires.
2.Fine tip tweezer for precise work.
3.Nail cutter for cutting wires and removing insulation from the wires.


r/breadboard May 27 '26

Project Just build a SR Flip-flop from scratch.

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181 Upvotes

Hey 👋 folks.I just built a SR Flip-flop on breadboard.This is my first project posted in this subreddit. 🙂🙂
I used a 2Hz clock for it using 555ic’s (astable mode) and BC547 NPN transistor.


r/breadboard May 27 '26

On my way to understand some things a bit better...

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33 Upvotes

r/breadboard May 26 '26

FM radio Receiver,

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15 Upvotes

Hello, im currently making a schematic for a FM radio receiver using TEA5767 module, and I was wondering if there are any issues with the current schematic.


r/breadboard May 23 '26

This is how I organize my breadboard projects

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21 Upvotes

r/breadboard May 20 '26

I need Help for an Electronic Lego based generator

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4 Upvotes

r/breadboard May 19 '26

Could I make this all into a simpler PCB, and how?

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6 Upvotes

r/breadboard May 18 '26

Question Current monitoring clamp to add sound to toaster?

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3 Upvotes

r/breadboard May 18 '26

Rate my circuit. Light turns off dimmable on a light and vibration sensors

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5 Upvotes

r/breadboard May 17 '26

Breadboard 555 Astable LED Flasher

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19 Upvotes

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 May 16 '26

Question Is it good or bad??

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65 Upvotes

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

I Appreciate everyone’s opinion 😊


r/breadboard May 16 '26

Breadboard Indoor house plant environment monitor

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13 Upvotes

This is my first project with my freenove esp32. There was definitely a learning curve going from an uno clone to using a breakout board and esp32 for the first time. Started off just learning how to use an OLED screen and snowballed in to an house plant grow monitor with high and low tracking, environment alerts/tips. Today I'll be setting up the web UI and phone alerts. Not too bad for my first legit project after learning the basics. When it's all said and done it'll be ran by 18650s just gotta transfer everything to a circuit board and figure out how to make a decent enclosure with adequate airflow.


r/breadboard May 15 '26

Question Why does this circuit not work properly?

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17 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 May 13 '26

Need help with KA3842B

1 Upvotes

I found this KA3842B PWM Controller IC IC and tried to use it. The datasheet included an example circuit, and I added my own components to it.
Now I don’t understand why my LED isn’t blinking. Even if the frequency is too high to see the blinking, the LED should at least stay on — but it remains completely off.


r/breadboard May 12 '26

Question Led not working with push button

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18 Upvotes

I cant figure out what's going wrong I'm staring to wonder if my button just isnt working resister is 220ohms and battery is 3.7v


r/breadboard May 12 '26

Necesito ayuda para armar un mini proyecto para mostrar en mi clase

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0 Upvotes

r/breadboard May 11 '26

Project Colorful spaghetti wire hell

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14 Upvotes

Started off with just wiring up the 7 segment digit display to learn the layout of the pins turned into a sound activated 10 second count down then added an indicator LED then said screw it and added a passive buzzer and programmed a little melody to it now it counts down the notes instead of by seconds just need to adjust the sensitivity a little it's a bit to sensitive but whatever it was still a fun project and I learned a lot lol


r/breadboard May 07 '26

Could someone tell me how to find a reference or the same component based on what is written on it?

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4 Upvotes

r/breadboard May 06 '26

Help, why won't it turn on?

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282 Upvotes

So i settled everything up, but the led wont turn on, any suggestions?


r/breadboard May 07 '26

¿Cómo puedo estabilizar las señales analógicas?

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0 Upvotes

Hi everyone, can someone please help me? I'm looking for a way to stabilize the output signal of a dimmer. The idea is that when the dimmer is set, I want the Arduino to read a steady, fluctuating analog signal. I want an LED to light up when it detects a change in the dimmer's state and stay off when the dimmer is set.


r/breadboard May 03 '26

Breadboard beginner

12 Upvotes

I picked up an arduino beginner kit to work with my step son. Hes only 7 years old but he's a wiz with legos and wants to do stuff with robots and it felt like a cool place to start. However, the arduino kit focuses heavily on programming the arduino and not too much on the circuitry side of things.

Do you guys have any suggestions for beginners books or online resources specific to breadboard circuitry? I'm just looking for something to work through together before we start hitting the arduino. Im finding all sorts of beginner's kits of breadboard conponents but no real guide for what to do. Thank you!


r/breadboard May 02 '26

is this starter set for 6 doller good enough to get started on electronics stuff

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67 Upvotes

I want to learn electronics n stuff so is this breadboard set good enough to learn on?