Questions tagged [breadboard]
A breadboard is a pre-made generic board for prototyping, typically referring to solder-less, reusable plugboards.
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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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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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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 ...
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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 ...
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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 (...
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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 ...
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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 ...
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Breadboard Power Supplies get hot in <2mns of runtime
I am trying to power 2 Raspberry Pi Pico's 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 ...
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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 ...
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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 ...
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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, ...
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Connection from breadboard to stripboard
I already have my circuit placed on breadboard. Now I need to transfer it on stripboard. My question is I can just transfer the exact same connection and placement on stripboard right? I don't need to ...
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Understanding a connection in my circuit design on a virtual breadboard of a voltage regulator
Circuit-1 is a simulation of a breadboard with 2 capacitors connected in parallel with a voltage regulator.
Circuit-2 is also a simulation of a breadboard with 2 capacitors connected in parallel with ...
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Solderless breadboard sizes
I wanted to know about solderless breadboard sizes; a standard solderless breadboard has five holes in a row.
There are a lot of options to get a bigger workspace, like assembling two solderless ...
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I have a basic LED circuit with an STM32F030R8T6 which is not working and I cannot figure out why
Apologies as this is a somewhat vague question but I cannot figure out what is wrong with my circuit/program and I have been stuck on this for a couple of weeks now.
I have this circuit I put together ...
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Jack audio 3.5mm PJ 215 (PJ 325) pins
I'm doing a simply audio frequency power amplifier circuit on breadboard. The input is the audio output of laptop or smartphone. I need to bring the input into the circuit:
I have this thing, it has ...
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What would this breadboard look like as a schematic?
Here is my button pull-up resistor circuit on a breadboard. Note both the additional link between the button and ground, and the multimeter measurement point is different.
I was wondering what the ...
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Suggestions for breadboard routing of hard switch full-bridge circuit
I need to do some test on a hard switch full-bridge PWM circuit, but I don't have any experience on how to route it.
I'm worried that the terrible routing may influence the normal signal, such as the ...
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Current flowing through transistor with no Vcc
I'm trying to get a motion sensor to turn on a motor.
I use a C1815 transistor. The problem is that the motor still turns when there is no Vcc from the sensor.
The positive for the motor comes ...
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Header pins stuck to breadboard
I got a MPU-6050, and with it I also got some header pins for ease of use. I connected the header pins to the breadboard and now I can't get them out. They are stuck extremely tightly and I don't want ...
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Converting a breadboard to a schematic
I am familiar with converting schematics to breadboards, but how would I go about converting this breadboard to a schematic?
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Breadboard contact resistance
My question is about breadboards. I've been using breadboards for 5 years and even if they are good only for early prototypes and are not too reliable, they have always let me build what I had in mind ...
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Convert USBC->USBA2 into USBC->Dupont connector for bread board
As I was tired of always lacking the right cable, I started making my own ones with the little soldering skills I have.
So now I want to convert a USBC->USBA (2.0, not blue) male-male into a USBC-&...
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How to connect correctly MP3 Jukebox Module to make the push buttons work
I purchased the MP3 Jukebox module (manual) from Velleman (ref. VM202N).
I have some trouble making the connections on my breadboard.
Here is what I think is the best I can do:
The result is that the ...
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Active notch filter behaves like a low-pass filter
I'm trying to build an active notch filter centered at 50 Hz. I'm trying to wire it using a breadboard but I'm facing some problems with the output signal.
Before wiring the circuit, I tried to ...
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Breadboard to perfboard
Update:
Thanks all! Problem solved. I tried to connect all the resistors to the ground and it did work!
I'm having a problem regarding a circuit on a perfboard. I try to use five piezo sensors which ...
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Trying to make an AND gate but it's not working in online simulation [closed]
The image above is what I'm trying to remake on a breadboard.
The image below is my attempt to remake it, but it's not working and I have no idea why.
Any help? I am pretty new to circuits.
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How to name and find this breadboard jumper connector (commonly named Dupont cable) but with a removable pin?
I was sifting through some stuff I got from a friend whose uncle was a professor of electrical engineering and found a few of these 2.54 mm pitch prototyping cables (commonly known as 'Dupont' cables) ...
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Having trouble verifying op-amp on circuit board
I'm having trouble verifying that I understand how op-amps work (because I clearly don't!). I've hooked up the following circuit on my breadboard:
The voltage sources are two 9 V batteries, the ...
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10 by 10 reaction game project not working
I know it will not be easy to answer just by looking at this.
The breadboard instructions in the book are fully wrong; it doesn't work at all.
Then I tried building according to the circuit diagram. ...
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Appropriate hardware for driving 8 linear solenoids?
I have a project where I plan to drive 9 12 V linear solenoids using a controller (Arduino Uno?) to “play” a recorder. I don’t have a background in electronics systems/design, and I have the following ...
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How to get high quality single headers?
I've been working with Arduinos for the past couple of days, and one of the things that I've really appreciated from the Arduino Uno is that it has very conveniently placed headers, allowing for very ...
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How can I create a mist maker with a 9 V DC power supply?
Context
Note: I am a beginner with electronics so please provide detailed explanations and add descriptions that are more beginner friendly. I really do want to learn how this all works.
I am trying ...
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Why does my oscillator work in LT Spice but not when I implemented it on a breadboard?
I'm working on creating a phase shift oscillator that uses a common emitter BJT as the amplifier. I designed the circuit so that it produces a sine wave with a frequency of roughly 25kHz and peak to ...
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Which complementary astable multivibrator is more reliable to produce for tests on a breadboard?
Astable multivibrator coupled with complementary astable multivibrator:
I tried to build this schematic on a breadboard, but the complementary astable multivibrator circuit on the right does not work ...
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Query regarding 9 V battery connection to 7408 IC
I have got some LEDs, a breaboard, a 74HC08 IC, a 9 V battery, resistors of 10 and 100 ohms. I want to check the IC by connecting it to a breadboard but the IC input voltage is 5 V and current 8 mA. ...
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Complementary astable multivibrator vibration/oscillation reason
I set up this astable multivibrator on a breadboard. Sometimes it works and flashes on and off it, and sometimes it does not flash on and off - the LED stays on.
Is there any reason or specific ...
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Soldering cheesy 9 V battery wires to wires I can plug into my breadboard
I have a wire that fits atop my 9 V battery and it should easily feed into a breadboard but it does not as the wire is stranded.
I tried last week to solder these wire strands to breadboard jumper ...
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How do you build this circuit on a breadboard?
How do you build this circuit on a breadboard?
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How can I connect those pins to jumper wires? [closed]
I have an nRF24L01 and I want to connect these pins with jumper wires to my Arduino but the module covers the right side of the pins and I can't connect jumper wires to them. How can I connect those ...
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Long PCB breadboard [closed]
I'm looking for a PCB breadboard longer than this one:
I spent a long while searching without success. Any clues or confirmation of futility of further search would be greatly appreciated.
Here is a ...
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Could I have a whole batch of bad AT26C16 EEPROM chips?
I am in TTL chip heaven (India) where I can get these things for pennies on the dollar, so I bought batches of chips to tinker with. Among them a 16 AT28C16 EEPROMs, looking like new, and then 2 very ...
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LEDs lowering my voltage
I'm getting to electronics and I have ran into a big issue. When I connect LEDS to my breadboard in parallel my voltage drops. I read in the past about series decreasing voltage and parallel ...
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Is there a breadboard for DDR4 card slots? [closed]
I've got a TE 2309413-1 card slot on my project board and I'm looking for a development board that I can use and plug into the slot. Does anyone know if such a thing exists? My Google-fu isn't turning ...
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MCP2515 CAN Transceiver Breadboard vs direct PCB Female Header connection
I have experienced a case, where I connect the MCP2515 over jumper wires to uC and everything works as intended.
However, when I plug MCP2515 directly in the PCB (through female headers), the MCP2515 ...
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Voltage drop resistor circuit unexpected voltage
I am playing around with voltage drop resistor circuit, but the output voltage doesn't match the voltage I calculated.
This is the formula I am using
Vout = Vs*R2/(R1+R2)
simulate this circuit –...
