Episode #125 of the Stack Overflow podcast is here. We talk Tilde Club and mechanical keyboards. Listen now

Questions tagged [breadboard]

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

Filter by
Sorted by
Tagged with
0
votes
1answer
45 views

Breadboard circuit with PN2222 transistor, LED constantly on

I am trying to build a breadboard circuit for my class assignment using a PN2222 transistor. The LED light is constantly on, without pressing the switch (button). The directions of my assignment ...
0
votes
1answer
31 views

How to prototype current sense circuit on bread board?

Connectors on a breadboard have some resistance, when prototyping a current sense circuit with a 0.01 ohm resistor can the connectors resistance affect the circuit? and if yes how can we prototype ...
3
votes
1answer
100 views

Inverting op amp design saturates at a fraction of power supply

I have built a simple inverting op amp. I am applying a 1 Vpp sinusoid at 10 Hz to a design with ~4.7x gain. The resistors I am using are 47kOhm and 10 kOhm. The op amp chip is the LT1222, and I am ...
0
votes
2answers
70 views

Circuit Diagram to Breadboard

I'm really confused on how to implement this circuit diagram on a breadboard. The short wire indicated with v1 is the confusing part. I tried to make it on a breadboard but I can't seem to get it. Any ...
0
votes
1answer
30 views

1602a LCD - Voltage drops to zero when both VSS and VDD are connected

I'm currently trying to connect a 1602a LCD screen to an ATMega328P MCU: As you can see, I use an Arduino Uno for power supply and as ISP. However, when I connect both the first (VSS) and second (VDD)...
0
votes
1answer
35 views

Insufficient current using Elegoo UNO R3 and breadboard

I'm completely brand new to electronics and just bought a breadboard kit to try and get my feet wet. I have a 9V battery and I'm trying to fire up a green LED. I have a 330 Ohm resistor in series ...
0
votes
3answers
53 views

Breadboard and XOR gate not working

simulate this circuit – Schematic created using CircuitLab 70I am trying to make a circuit in which the switches will determine the outputs for the xor gate however when i used the switches it ...
0
votes
1answer
45 views

Switch that change its state with a signal of some seconds

I'm making an IoT project for a friend, but I need some tips: I want to use an old mouse sensor and convert it to a movement sensor (just for a door) and if it's activated, a second device (an esp8266)...
0
votes
2answers
90 views

How is the common anode 7-segment display in Ben Eater's setup working?

First question in this community, and I'm a beginner when it comes to circuits. In Ben Eater's video on using an EEPROM for combinational logic, he uses the output of an EEPROM to drive a common anode ...
4
votes
2answers
89 views

Simple Op Amp Non-inverting Amplifier Circuit Not Working

I am only just starting to learn about circuits and electricity, so please bare with me. I am attempting to build the circuit pictured below: And this is my rendition of it: Here are the parts used:...
0
votes
1answer
36 views

How increase pressure sensor breadboard sensitivity?

I build a pressure sensor breadboard according the schematic. It works, but has quite low sensitivity - it shows some pressure only after big pressure is applied. Is there a way to increase ...
3
votes
4answers
995 views

Simple fuzz pedal using breadboard

Complete newbie here. I've been trying to reproduce a simple fuzz pedal using breadboard. Here is the scheme: And here is the current state of my breadboard: The only sound I hear is white noise ...
0
votes
1answer
58 views

I have a 2 A 12 V regulated power supply and I want to use it to emulate a 9 V battery for a breadboard

I have a 2 amp 12 volt regulated power supply and I want to use it to emulate a 9 volt battery for a breadboard. However, I need to protect the power source and the components used in my breadboard ...
1
vote
3answers
45 views

Why different battery voltage does not affect LED light-up time?

I have this clock circuit build along with de-bouncing circuit - https://www.youtube.com/watch?v=6O6xdOexSCE (this is based on Ben Eater's 8bit computer). But I'm using 9v battery instead of 5v one. I ...
0
votes
2answers
164 views

The art of using breadboard

I am making a circuit for converting analog to digital signals using an ADC0808. This IC has 28 pins, and my circuit also includes a 555 timer and some LEDs to display the output. The high number of ...
0
votes
0answers
461 views

Tesla coil circuit troubleshooting

Ok so we are making a tesla coil. Here is the circuit diagram we are referring: Now it worked when we first made this. The light bulb lights bulb when we bring it near to secondary coil. Then we ...
0
votes
3answers
107 views

How to convert 8-bit information containing MIDI note, to square wave signal using basic chips and components? [closed]

Using basic electronic components (capacitors, transistors, etc) and/or chips (555, 74 series, etc) how do I convert from: Input: 8-bits containing the binary representation of a MIDI number "...
6
votes
4answers
2k views

Can I run 125kHz RF circuit on a breadboard?

I was wondering if making a low frequency RF circuit on a breadboard is viable.
0
votes
2answers
68 views

Arduino pin connection basic

In the Arduino Uno's basic manual, connections for fading led are given. They have connected led on breadboard. The positive of led is connected through a resistor to the pin no 9 (pwm) and negative ...
2
votes
1answer
106 views

Finding the broken cicuit in an Xor Gate

I am new to this particular stack site but I feel that this is the most appropriate place to ask my question. -Background- I've been following an online web course called Nand2Tetris that takes you ...
0
votes
2answers
140 views

JK flip flop integrated circuit (7473) toggle malfunction

I built a state machine using JK flip flops, I tested it but I kept getting seemingly random results. I decided to test each jk flip flop individually. Here is the schematic for my testing: simulate ...
1
vote
1answer
84 views

Electronics project

I am building a project for my college work which is used to detect the leakage of gas in house. The schematic diagram is given below. 1: I removed the rectifier part because I am using a battery. ...
0
votes
1answer
61 views

Connect TFT LCD screen with flex band to breadboard

I'm asking for clues on how to do this, I didn't found much over the internet as everybody buys their LCD screens with a mounting to the breadboard of as a shield for arduino. The TFT screen I bought ...
4
votes
1answer
841 views

my breadboard simulation doesn't work properly

I'm trying to simulate the below circuit on a breadboard but it seems I'm missing something because the numbers don't seem to be correct. Here is the circuit I am trying to build: Here is my ...
2
votes
2answers
112 views

electronically efficient breadboard wiring

I have checked stachexhange for my answer, but no luck. I hope I can be helped here. I am building ben eater's 8-bit, and have a general question about wiring: Is it better (less impedance/resistance)...
0
votes
1answer
59 views

Low Pass filter

I am making a Sallen-Key topology second order low pass filter with 10Hx cutoff frequency: I am using the LM248 op amp. The resistor and capacitor values are specified in the drawing. However, when I ...
0
votes
3answers
117 views

TTL IC logic high output doesn't reach high enough voltage

I've been having a problem trying to build a breadboard circuit. The problem being, that some IC high outputs doesn't reach a high enough voltage, staying around ~2V. That is not sufficient for a ...
11
votes
1answer
1k views

Is this a correct way to route current away from breadboard?

I've recently grown interested in electronics and robotics, so I wanted to move my contraption using a servo motor. A 555 chip creates a PWM signal for servo for positioning, and I control the servo ...
0
votes
1answer
48 views

Can I use the oscillation frequency equation for this circuit?

I'm not really sure if this is a question that can be answered so I'm sorry in advance if it isn't. I've just started doing electronics on a breadboard and I'm making a "Mini Strobe Light" from Jaycar'...
0
votes
0answers
131 views

Perfboard dimensions

I would like to design a 3D printed enclosure for my project. I am using these perfboards from amazon. I could not find online the dimensions for the mounting holes. I know I can use a calliper, but ...
2
votes
1answer
213 views

Arduino UNO disconnects from computer when connecting it to a breadboard from specific holes

I am a complete beginner in electronics; I started learning using Arduino yesterday. There is something strange happening with the Arduino UNO board. The Arduino board is connected to my laptop and ...
0
votes
4answers
62 views

simplest way to create an activatable alarm on a speaker?

I have made a circuit that produces a 3.3V high when its active and 0V when it is off. Now I would like to extend it with a speaker that plays some sort of alarm (although it shouldn't be too ...
0
votes
1answer
170 views

Led on breadboard burned out why?

Please be kind as I am fairly new to electronics. Anyways, from what I read on multiple forums the rules are fairly straight forward, but I am puzzled as to why my led burnt out. So I connected the ...
0
votes
0answers
79 views

LEDS on Traffic Circuit using 555 Timer Don't Light up

Here is a picture of the circuit and circuit we built on the breadboard. We used every component as instructed and built it as such. The Green LED lights up for about 7 seven seconds then turns off, ...
0
votes
2answers
133 views

Power issues on TTL circuit

I am building a homebrew 8-bit computer on breadoards and PCBs with TTL logic IC's (LS, HCT and ALS families). This is a small portion of the circuit (3 modules): I'm using an ordinary phone charger ...
0
votes
1answer
30 views

Unable to supply FONA 32u4 3.5 v through circuit

I am relatively inexperienced when it comes to circuitry and electronics. However I am trying to create a simple device in which with a press of a button, the device turns on and calls a specific ...
0
votes
2answers
302 views

741 Op. Amp.: Inverting input connected to output (pin 2 connected to pin 6). What does it mean?

simulate this circuit – Schematic created using CircuitLab I am a newbie electronics students. My question is, what does it mean (what happens) when you connect pin 2 to pin 6 on a 741 op. ...
1
vote
1answer
420 views

Zero crossing detection circuit correct?

I am working on a DIY AC dimmer circuit with arduino. This project is part of the AC dimmer circuit as mentioned here Since, I was stuck in so thought of retracing my steps and checking each part of ...
7
votes
4answers
3k views

AND Gate Stays Open

I have a very simple circuit on a breadboard with two push-button switches, an AND gate (74LS08), and an LED. I have the two switches hooked up to pins 1 and 2, while the LED goes from 3 to ground. ...
0
votes
2answers
56 views

Magnetism and my breadboard

So today I assembled a little circuit to test my new shift registers (74HC595). I took three breadboards and connected them as shown on the drawing here. It is supposed to work as a user ...
4
votes
2answers
146 views

555 Astable Timer produces incorrect period/frequency

I am building a 555 astable timer circuit for a course which must match the BPM of a song. The song has a BPM of 104, which requires a timer frequency of roughly 1.733 Hz. The circuit looks as ...
0
votes
1answer
78 views

Why doesn't my bench PSU read current on a breadboard?

I've recently purchased a cheap eBay DPS3012 DC-DC converter supply. I intend to use it on breadboard projects. The "problem" is that the meter reads a 5V output, with no current being drawn and ...
7
votes
1answer
3k views

What breadboard simulation software is this?

I'm not familiar with what software is available and cannot recognize the origin of this diagram. Does anyone know what software this is? I'm only guessing that it can perform simulation; it may just ...
1
vote
2answers
1k views

Circuit to Breadboard [duplicate]

I'm currently working on a project which requires me to test the functionality of TTL logic gates by making use of diodes and resistors. To do so I must first place them on the breadboard and then ...
1
vote
1answer
125 views

Noise everywhere on solderless breadboard, could the DC-DC converter be the source?

I am using a solderless bread to prototype an analog sense -> 8 bit digital circuit. It's messy Has Hi gain sensing opamps sensitive POTS I have 20mV of noise everywhere, even when I am connecting ...
0
votes
1answer
112 views

Is the grounding of the breadboard common used? [closed]

Is the ground of the breadboard common used ? I mean can i connected two different voltage producer (voltage supply) ground pins in the some negative hole in the breadboard?
-1
votes
2answers
2k views

How adding a jumper switches the power between 5V and 3.3V?

Below is a snapshot of MB102 bread board powersupply that can provide either \$5V\$ or \$3.3V\$ on either rails. We can switch between 5V and 3.3V by adding a jumper as shown. I'm just wondering how ...
0
votes
2answers
135 views

Connecting Led in Series with Parallel Switches

I created a diagram for a circuit that i am trying to implement. I have attached my circuit diagram and have been trying to implement it but still have not got it to work. I've checked all the wiring ...
1
vote
3answers
106 views

Need help choosing a power supply for a breadboard [closed]

Hey i want to (in the long term) start experimenting with remaking modules from old analog synthesizers. For example remake an oscillator from a Minimoog or a chorus from a Roland Juno-60 or something ...
19
votes
3answers
5k views

What kind of rubber “melts” plastic?

I know this should probably be posted in a chemistry exchange, but I figured the parts are pretty standard electronics equipment that the question might be more relevant here. So a couple of ...