Questions tagged [breadboard]
A breadboard is a pre-made generic board for prototyping, typically referring to solder-less, reusable plugboards.
574 questions
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Why this simulated circuit (in TINKERCARD) doesn't work? [closed]
I'm trying to build an AND gate, as shown in tis video: at 20:20. When ho button is pressed, the multimeter says 4.29mV, when I press the second button it drops to 0V. And when both are pressed, it ...
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XOR gate (74xx86) not XOR'ing with DRAM (4164) on breadboard
I have been trying to use a series of XOR gates (74LS86, 74HC86, even CD4070) to invert address lines going to a 4164 DRAM, but am having little luck. Here's a drawing to illustrate my setup on the ...
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Why are the two LEDS getting short circuited here? [closed]
After simulating the circuit on Tinkercad, the last two diodes got bypassed. I also don't understand why P1- in the diagram is not placed after D22 just like in the breadboard, bypassing all of D23, ...
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I don't know if my connections are correct. (Schematic to breadboard)
This is intended to be a voltage multiplier.
Can anyone check if my connections are correct or accurate to my schematic?
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Hall effect sensor RPM detection via breadboard circuit
I have been using the AH1815 Hall effect sensor with an Arduino and a breadboard circuit to determine RPM value of a magnetic tribune. The RPM value was detected by reading unit steps on an ...
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What's a good way to connect an antenna to a breadboard for experimenting?
What's a good way to connect an antenna to a breadboard for experimenting?
I am experimenting with RF (HF - 7 MHz) circuits and will be ready to connect an antenna to the breadboard soon. I intend to ...
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Proper termination of a Breadboard Bus
Aging software engineer here — about to embark on a labor-of-love hobby project that I have wanted to do for several decades.
Like so many before me, I plan to build a homebrew CPU, from SSI TTL. ...
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What is the contact material for typical solderless breadboards?
A question about using oversized leads in solderless breadboards got me thinking about how I damaged a breadboard back in my hobbyist days, and whether there's any difference in how cheap or expensive ...
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How to breadboard with large lead components (such as TO-220)?
What type of connector, terminal block, header, or socket can plug into a breadboard on one side and accept large lead components (such as a TO-220, lead is 0.05" wide)?
Background
Breadboards ...
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Are variable capacitors compatible with breadboards still available?
Variable capacitors are used less, since the preference is for digital adjustment. And through hole parts are used for less, since the preference is for SMD. Finally, many variable capacitors have ...
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IC socket for SMD on Breadboard
I'm trying to find an IC socket that will work on a breadboard for a "SMD" type pins.
Breadboard https://www.digikey.com/en/products/detail/dfrobot/FIT0096/7597069
I have a chip fds9934 ...
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Trying to get PIC code to work
Relevant info can be found in this Google drive folder, breadboard is 1:1 with the schematic.
So, I've been scratching my head for the past few days to get this design to work, I tried to get some ...
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How to modify frequency of an analog signal [closed]
I want to create my own pcb. First step is to design my circuit. I thought about a voice modifier.
So, in the breadboard I should put:
a microphone (an electrostatic electret microphone)
followed by ...
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Trying to make a Pip-Boy like game with LED buttons on a breadboard
I'm new to making electronics and I'm having a hard time of going about this. I have had a little help but I'm stuck.
The way I'm wanting to have the circuit work is there are 3 LEDs with 3 switches ...
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Attempting to get a program for my PIC16F84A to work
I've been struggling for the past few days trying to get this to work right and need a professional to take a look at this and see where I am going wrong:
Code:
...
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Circuit simulation is not functioning properly
I am a college level electrical physics student (and so I do not have a lot of knowledge on the topic of electronics) and I am in the midst of writing a report on a project that was done throughout ...
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Connecting many wires to Vcc
How can we make a common horizontal connecting point on a breadboard? We are trying to design a 3 bit synchronous counter using JK flipflops, in which most of the pins are get connected to Vcc. We are ...
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Why is the frequency and voltage of my Colpitts oscillator lower on breadboard than LTSpice?
My colpitts oscillator I made on LTSpice oscillated at 5 MHz at a peak-to-peak voltage of 260V.
When I put all the components down on my breadboard and measured it with a real oscilloscope, the ...
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The Electronic Electroscope breadboard is not working [closed]
Firstly, It's my first time using a breadboard or any electronic components.
I am trying to copy this electronic electroscope circuit from this site. Here is the image of the circuit
And this image ...
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Breadboard connection problem
The schematic shown is for an electroscope.
{Source of the schematic: https://www.electronicsforu.com/electronics-projects/electronic-electroscope?unapproved=346023&moderation-hash=...
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What type of wire do you recommend for "breadboard jumpers" where the insulation doesn't melt?
Every kind of 24AWG solid core wire I've gotten from Amazon over the years has this same problem. If you want to have lovely neat organized breadboards/perf board circuits, you try to bend the wire to ...
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TinkerCAD Digital Logic
Everything here seems to be right, like the gates and resistors, but the gate seems to be the issue; the LED is off when the switch is on. What is the issue? I have also included the schematic.
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Chip based logic, NOR by sn74hc02n analog [closed]
I think I'm not understand something obvious when trying to implement the complex logic(half-adder) by NORs. Possible to simplify my question, why in this position the diod is emitting:
In this state ...
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Emitter circuit on a breadboard
I am working on an emitter circuit that has a 2N3904 NPN transistor.
I have simulated the circuit before and got the results. I am trying to build it in the lab so I can compare the results to my ...
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Reverse polarity, over-voltage and over-current protection for a "breadboard add-on board"
I am designing a small utility board that should attach to a breadboard and take power from it.
It can be described as the opposite of this SparkFun Breadboard Power Supply: instead of powering the ...
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How to connect multiple devices using one USB port and a breadboard?
I have an audio device with 8 channels, every 2 of which need to be powered by a 5V power outlet. Up until now, my lab used USB chargers to solve the problem.
But now I have to improve upon it, and I ...
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3
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Why do they ship a metal sheet with the breadboard?
My breadboard came with a metal sheet:
The breadboard should hardly be ESD sensitive. And if it would be, then there's still the double sided tape separating the breadboard from the metal sheet. From ...
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253
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Using ARM Cortex on breadboard
I want to know if can I use an ARM-Cortex-M4 processor directly on a breadboard and then create a microcontroller on a breadboard. I already tried searching google but didn't find anything.
Please ...
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What resistors for a 4 LED Arduino/breadboard project?
I am currently working on a school project for my work-study. The project is super simple: light up 4 LEDs, in various patterns, using a push button to cycle through the modes. I'm using 4 colored ...
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Adding on and off state in a 555 timer clock circuit
I'm making a clock signal for my circuits, and I'm utilizing the 555 timer for this. I made this circuit below which outputs a clock signal. And now I'm trying to figure out how can I add on and off ...
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Is my 600mA, 9V adapter suitable for a MB102 breadboard power supply?
I've recently bought a 600mA, 9V adapter thinking that it would be suitable for a MB102 breadboard power supply but have now read that the maximum output of the MB102 breadboard power supply is 700mA ...
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Controlling Motor Speed with MCP4162-104E Digital Potentiometer
I am new to electronics and this is my first time using a digital potentiometer. My goal is to control the speed of a DC motor using the MCP4162-104E digital potentiometer. I am confident in the ...
user360439
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4
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How to learn/experiment with AC voltages safely in a breadboard-like environment?
I'm trying to build a project where I will use a microcontroller to control a heating element. From what I’ve read, it seems a TRIAC and Optotriac will be best suited for this purpose.
While I'm ...
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My Z80 is not reading from memory (RD pin high and Databus is showing 00)
I am trying to run a simple program on my AT28C256-15PU with a Z80 from here I bought in mid 2023; it goes:
...
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Why am I not getting an output from this breadboarded phaser?
After following along with a hobbyist's video, I breadboarded a phaser. Unfortunately it seems my circuit is not achieving anything close to what the hobbyist achieved with his.
I believe the issue is ...
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1
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What are the outputs from my cable?
I am in the process of building a microphone connected to a Raspberry Pi Pico. To check my expectations are correct, I have bought a pre-assembled electret mic and amplifier. The issue I have, is I ...
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Arduino's impedance in breadboard circuit
(Warning, as this is a long question, asked by students that don't know what they're doing. Perhaps our questions are too general and can't be answered but at this point we'll take all the help we can ...
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How can prevent the source voltage from dropping when using a 555 timer
I am trying to use a 555 timer in my circuit to produce a signal (rather generally) above 100kHz. I have been successful with this goal, but have had an issue where the voltage measured on my positive ...
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BJT 2 Stage Amplifier with Global NFB
I am a designing a transistor amplifier that will have a gain of 100-130 and output-swing of 6Vpk-pk, and frequency range of 1kHz-10kHz.
I am at lost how in the simulation my circuit work with the ...
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Would a solderless breadboard be able to handle 20V without short circuiting?
Until I can get a 12V power supply, I'm left with using a laptop charger as a power supply for my solderless breadboard. Will the breadboard be able to handle it?
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First time using breadboard, diagram circuit and arduino
I'm relatively new to Arduinos, schematic circuits, and breadboards. My goal is to recreate this project that emulates an antenna rotator controller.
To clarify, I don't want to use the LCD and button ...
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Review and Feedback on my Prototype Button Module for Breadboard [closed]
I'm working on creating a button module that can be placed on a breadboard. I've designed the schematic for it and am considering converting it into a PCB soon. You can find the images of the module ...
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What's the name of this plug?
This is the plug on the MH-Z19B Carbon Dioxide Monitor Sensor. What is this plug called? We need to find a breakout board for it (header?), a connector we can plug that into that have pins that are ...
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LED Overcurrent Circuit
I've just started in basic electronics. I was simulating some basic circuits at tinkercad.com and I do not really understand why the LEDs in the two circuits in the pictures below have too much ...
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Max Power for a square wave on a breadboard
I am aware the max continuous power for a breadboard is 5 Watts. I am creating an amplifier circuit for a 1.7 MHz square wave using a mosfet. I would like to test it using a breadboard before I go ...
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Why is the green LED not lighting up?
I suppose the green and red are connected in parallel state.
Why is the green one not lighting up?
Why is it not green-1, red-0?
3. I am using a 9V battery. How are the bulbs even lighting up? ...
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How to connecting two ADXL345 (GY-291 modules) to one Arduino UNO R3 by using pin jumper?
I am having some trouble in connecting two independent ADXL345 (GY-291 modules) to my one Arduino UNO R3. Before this I tried using one ADXL345 and it works perfectly, but in my project I need to use ...
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How to turn-on NPN transistor? [closed]
Connecting base to high state from MCU
Transistor: BD239C
Collector-emitter is powered by 12 V 2 A and resistance is 660 Ω,
12 V / 660 Ω = 0.018 A
Base is powered from MCU output by 5 V 0.2 A and ...
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2nd LED doesn't turn on as expected
I'm new to electronics and have been doing it as a hobby.
Today I tried to use a relay in my circuit to turn on and off 2 LED lights, as you can see in this schematic:
Image source: Make: Electronics ...
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2
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Two LEDs don't light up together [closed]
Why do two LEDs not light up together simultaneously?
Microcontroller is atmega328p. Output voltage 5 V 200 mA
LED 20mA
When I replace LED by single cable, LED doesn't light up too.
LED lights up only ...
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