Questions tagged [breadboard]

A breadboard is a construction base for prototyping of electronics. In the1970s, the solderless breadboard (a.k.a. plugboard, a terminal array board) became available and nowadays the term "breadboard" is commonly used to refer to these.

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NodeMCU LUA ESP8266 12E Issues with Programming

I recently bought the NodeMCU ESP8266 to work on an embedded project, and for whatever reason, the board will only allow me to upload Arduino sketches when I unplug and replug in the board via the ...
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1answer
36 views

Connect multiple pins to same VCC using breadboard

Ok so I am pretty green as far as AVR programming is concerned so bear with me. I am doing a project with an ATmega32 MCU on a dev board which has 4 VCC pins. The project includes a GPS, SD card and ...
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33 views

MB-102 BreadBoard Power Supply Limitation

Does the MB-102 can handle Arduino Uno, SIM900 and 3 other modules that requires 5v? If yes, does 9v battery is enough? If no, please suggest me what should I use that uses only 1 barrel jack(if ...
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2answers
70 views

Button circuit draws all power away from LEDs

I'm very new to Arduino, so please forgive me if I don't know the proper terms for things. Whenever I press the button on the board, the LEDs all shut off. I can't host the image files on imgur, and ...
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4answers
188 views

Program Arduino then Remove Atmega?

Can I program an Arduino and then remove the micro-controller from it and use it on a breadboard without reprogramming the micro-controller again? My steps would be: create my Arduino code. I upload ...
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460 views

ESP32 Pins won't fit in solderless breadboard

I bought an Adafrut Huzzah32 ESP32 for an IoT project. When the ESP32 arrived, I attempted to fit it into my existing breadboard, but I immediately noticed that no matter how hard I pushed, the pins ...
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2answers
70 views

Soil moisture sensor not working in “pcb”

I have a little and common application in which a sc-28 moisture sensor reads humidity levels and turns a servo (which drives a little faucet) if the soil needs water. Arduino nano is the brain. All ...
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1answer
467 views

how to set buzzer on and off

I have a project that require me to use magnetic contact sensor. I will put the sensor at the door. So the idea is i want every time someone open the door, the buzzer will make a sound, but it will ...
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1answer
59 views

Breadboard arduino uno not working properly

Is there any mistake in the circuit of arduino uno on breadboard... I am using arduino uno board to program this 328p mcu and after that i remove 328p from arduino uno board and placing on breadboard ...
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2answers
221 views

Arduino Nano LED not working

I am just starting with Arduino and was trying to make the LED example work. I changed the script as follows to keep the LED on: #define LED_PIN 12 #define LED_RX_SIG LED_BUILTIN void setup() { // ...
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42 views

ATMega328P chip on breadboard does not work properly

I wanted to get some help about my ATMega328P on my breadboard. I programmed a simple clock like this - #include <LiquidCrystal.h> #include <dht.h> #include <DS3231.h> ...
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2answers
119 views

How to safely remove arduino nano from breadboard? [closed]

I did some prototyping with arduino nano in breadboard. And then after i done with the design, I was gonna implement it in a printed pcb so i need to remove the nano from breadboard. And this is when ...
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50 views

Why do preformed breadboard jumper wire sets miss so many useful lengths? [closed]

When I'm setting up a small breadboard (400 point) with a Nano, I often find myself having to run wires that are between 1" and 2" or point distances between 10 and 20 spaces on the breadboard. I have ...
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1answer
540 views

LCD lights up but shows no text

I've connected an LCD display to an Arduino Uno following the instructions from the Adafruit LCD lesson. I've used the code sample described in the Adafruit lesson. What happens after I connect the ...
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1answer
112 views

Arduino baud rate 8 times too high?

I'm having a strange issue where in order to get the expected serial output on my serial monitor, I have to set the baud rate on my serial monitor to be 8 times higher than the rate that i set in my ...
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1answer
152 views

How can I connect multiple different sensors that uses the same pins?

I'm doing a project on Arduino Uno and it requires me to connect 3 different sensors together: Waveshare 2.9 E-paper, MFRC522 RFID Reader and a ESP8266 wifi module. problem is, The e-paper and RFID ...
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1answer
93 views

Learn Arduino Basics : Temperature sensor with LCD Display and Potentiometer setup [closed]

I have temperature sensor, potentiometer and LCD screen attached to mini breadboard and wired to an Arduino. My temp sensor appears to be working fine however sometimes it reads inaccurate numbers ...
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2answers
3k views

Connecting an Arduino to a servo with an external power supply

I have purchased an MG995 servo (4.8-7.2V operating voltage, 170MA no load operating current draw) and will power this using a 5V, 2A mains plug pack. Do I need a breadboard to connect this with my ...
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61 views

Arduino Uno LED not working

so I'm new to all this Arduino stuff and have been trying to get into it, starting off with a simple project/test but have been having some issues. I followed the set up the book provides, and am ...
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77 views

Can't reprogram Arduino on protoboard (perfboard), but could program the same circuit on breadboard

So I have a circuit that works well when it's on a breadboard and without removing any pins I'm able to upload sketches, but for some reason when I transition it to a protoboard I can no longer upload ...
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2answers
145 views

Issue programming breadboarded Arduino via FTDI chip

I am trying to upload the Blink sketch to my ATmega chip which is now on a breadboard connected via an FTDI chip. My clock is running, power is OK. I connected the reset pin via a 100 kohm to the vcc ...
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1answer
62 views

How to fix the Break Beam Sensor programming issue that says “USB Device Disabled”?

I am trying to use the Adafruit Metro Mini as Arduino (can be used the same way) to program an IR Break Beam sensor and a stepper motor. I connected the beam sensor to the breadboard and plugged the ...
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1answer
157 views

Concave button wiring with Arduino

I am new to working with Arduino and I have a basic question. I have an entire circuit set up and functioning, but I would like to add an arcade style button (Larger concave style) like this. So my ...
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1answer
603 views

How do I know if I have a short circuit

I just got my first arduino starters kit so I'm a total noob in it. My simple LED blinker did work, afterwards I used a switch button with a debouncer script. It worked like I wanted but I wanted to ...
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1answer
68 views

Arduino Pong game Circuit Board Troubleshoot

I am following a tutorial online to make a pong game. I have managed to make quiet a lot work apart from my paddles in the game keep on shaking. The buttons do work fine, up and down on both ends. ...
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7answers
5k views

Arduino Newbie: Solderless Breadboard Alternate

I am completely new to arduino. I have created a circuit using solderless breadboard. But obviously the connections are lose or not as good as a soldered solution. So I was wondering since I am new to ...
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1answer
69 views

Can anyone identify these headers?

I'm very new to the Arduino platform and micro-controller projects in general, which is why I'm still learning about all the parts needed for circuit creation. There is one particular part that I ...
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5answers
843 views

Use MQ2 Sensor with Arduino Uno without breadboard?

I want to make a small and compact gas sensor using the Arduino Uno and MQ2 sensor. However all sites list a breadboard as a requirement. Now, the MQ2 has A0, D0, GND, VCC, pins and the Uno also has ...
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1answer
44 views

Help understanding circuit for button example

I´m working on the button example .Basically, i don't quite get the use of this connection. Also, the breadboard i'm using is not quite the ones i see on most tutorials. is there any 'mapping' i ...
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3answers
5k views

How to know positive and negative in breadboard

I have this breadboard, and there is no indication on it about what is positive/negative on it. In comparison, this other breadboard (pic from the internet) DOES have indications: Can anyone give ...
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0answers
223 views

Electrostatic Discharge Protection on Arduinos

I have been using Arduino for quite some time without providing any kind of ESD protection. Does the Arduino have on board ESD protection?