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Questions tagged [breadboard]

A breadboard is a pre-made generic board for prototyping, typically referring to solder-less, reusable plugboards.

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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 ...
SRobertJames's user avatar
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4 answers
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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 ...
Still's user avatar
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0 answers
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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 ...
JamesTDG's user avatar
-1 votes
2 answers
85 views

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 ...
void_brain's user avatar
0 votes
1 answer
115 views

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 ...
Tonto's user avatar
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1 answer
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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: ...
JamesTDG's user avatar
2 votes
2 answers
129 views

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 ...
Boldumus's user avatar
1 vote
1 answer
63 views

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 ...
user14822524's user avatar
6 votes
2 answers
391 views

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 ...
george_2roz's user avatar
0 votes
1 answer
88 views

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 ...
OMARGO GT's user avatar
1 vote
2 answers
133 views

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=...
MxDiodePN's user avatar
2 votes
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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 ...
AJ_Smoothie's user avatar
-1 votes
1 answer
44 views

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.
user367142's user avatar
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2 answers
59 views

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 ...
Kofani's user avatar
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1 vote
2 answers
165 views

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 ...
Ben Müller's user avatar
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0 answers
32 views

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 ...
tpimh's user avatar
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1 answer
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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 ...
Prothy_the_Prothean's user avatar
2 votes
3 answers
229 views

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 ...
Thomas Weller's user avatar
0 votes
4 answers
202 views

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 ...
stng's user avatar
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2 votes
3 answers
922 views

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 ...
Dio B.'s user avatar
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2 answers
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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 ...
Noobielectrix's user avatar
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2 answers
86 views

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 ...
J R's user avatar
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1 answer
100 views

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 ...
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2 votes
4 answers
219 views

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 ...
electronics_n00b494's user avatar
-1 votes
1 answer
112 views

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: ...
Dragonite Brian 1024's user avatar
3 votes
1 answer
484 views

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 ...
Thxforhelping's user avatar
0 votes
1 answer
56 views

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 ...
user10709800's user avatar
1 vote
1 answer
112 views

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 ...
Emmannuelle_Legolas's user avatar
4 votes
2 answers
694 views

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 ...
Alex Heinle's user avatar
1 vote
0 answers
143 views

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 ...
Lumiere's user avatar
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4 votes
4 answers
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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?
Natnael Belay's user avatar
0 votes
0 answers
217 views

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 ...
ed190's user avatar
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1 vote
3 answers
71 views

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 ...
megvrx's user avatar
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2 answers
200 views

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 ...
Agent Zebra's user avatar
0 votes
2 answers
157 views

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 ...
Zachary's user avatar
1 vote
1 answer
83 views

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 ...
JulianGervassi's user avatar
0 votes
2 answers
165 views

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? ...
Abdush's user avatar
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1 vote
1 answer
186 views

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 ...
Airidz's user avatar
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-2 votes
2 answers
143 views

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 ...
Jakub Kutrzeba's user avatar
1 vote
1 answer
109 views

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 ...
pipocaDourada's user avatar
-1 votes
2 answers
307 views

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 ...
Jakub Kutrzeba's user avatar
0 votes
2 answers
176 views

Why does the LED turn off when I touch the insulating part of the wire?

This is a NAND gate IC. I have one input connected to the positive terminal of the battery while the other input is not connected to the battery as you can see in the image. Why does the LED turn off ...
Rx6rx's user avatar
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1 vote
1 answer
69 views

Butterworth filter not getting as much gain as expected

Using the Analog Devices Filter Design Tool, I have created a band pass filter for a 1MHz input with 20dB of gain. I have implemented the circuit in LTSpice with the expected behaviour, however when I ...
LK26's user avatar
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1 vote
0 answers
80 views

Alterning LED's in breadboard with timer 555, 2 circuits doing the same but i don't understand one of them

I am working on an alternating LED circuit. Initially, I implemented it following the circuit shown below. From this circuit, I understand that the capacitor discharges from R2 to the discharge pin (...
Aleat's user avatar
  • 179
2 votes
4 answers
121 views

PCB Mount Switch to Breadboard Adapter

I'm currently working on implementing this switch in my project (PCB Mounted). I'd like to move to the part of my project where I can implement a looks-like, works-like prototype, but I'm currently ...
Jelani Thompson's user avatar
5 votes
2 answers
2k views

4 parallel LED's connected on a breadboard

I am trying to connect on a breadboard 4 red LED's in parallel (Forward voltage: 2V, max current 20mA). To do so, i followed the schematics below and used a 50 ohm resistor (put two 100 ohm resistors ...
Aleat's user avatar
  • 179
1 vote
2 answers
137 views

Breadboard power supplies get hot in less than two minutes of runtime

I am trying to power two Raspberry Pi Picos with one breadboard power supply (found here.) When I connect a 9V battery to the supply (and have ensured correct wiring, correct rail polarity, etc.,) the ...
harryt's user avatar
  • 23
1 vote
1 answer
97 views

Needing some EPROM breadboard help!

I'm currently trying to make an EPROM programmer on my breadboard capable of programming a single address at a time. Nothing fancy for writing large programs, just trying to learn some basics. Right ...
Andrew Albritton's user avatar
0 votes
0 answers
117 views

My LTspice simulation results don't match the breadboard

I was testing a high pass filter like this. And here comes the simulation result on LTspice as well. This is the AC analysis result followed by the transient analysis. The 8Hz transient analysis ...
Tian's user avatar
  • 1
3 votes
1 answer
384 views

How to star ground in a breadboard?

How would one go about star grounding on a breadboaard? As I understand star grounding means connecting all wires to one point ground. How could you put all the wires into onee hole on the breadboard, ...
LEXOR AI's user avatar
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