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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About MAX30102, MLX90614 & Nodemcu-32s

I am using Nodemcu-32s with MAX30102 & MLX90614. I noticed a thing that when I was working with both sensor individually then both of them were working fine but when I started them using together ...
Yash Gandhi's user avatar
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1 answer
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Arduino pin erratic behavior?

I've built a switch key matrix (thus the diode, contextually useful schematics below) and me being me, I realised after that I misunderstood a few things about how button really works, to say the ...
O'Schell's user avatar
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How to Connect Two CQRobot Ocean Non-Contact Water/Liquid Level Sensors (CQRSENYW001) to Arduino UNO REV3 (A000066)?

I am a complete beginner trying my hand at a home automation project. Part of my setup includes using an Arduino UNO REV3 (A000066), and connecting two CQRobot Ocean Non-Contact Water/Liquid Level ...
Cody Kentucky's user avatar
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2 answers
92 views

Atmega 328pu on breadboard. What to choose in order to upload code with ftdi converter

When I program atmega328 PU on breadboard,vwhat programmer do I have to use and what arduino board type I have to choose? I am trying this with ftdi converter I have already done the connections and ...
Alexis Tsetsonis's user avatar
2 votes
1 answer
134 views

What type of pin header is this?

Most of the Arduino uno boards have black female pin header. when i bought a ardiuno uno the digital pins 0 to 7 are made of silver pins. What type of pin header is that? How to use these kind of pin ...
Alwin Varghese's user avatar
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2 answers
497 views

Rotary encoder weird values

I am trying to understand this rotary encoder I have, but it makes no sense to me. I am using this rotary encoder: https://www.amazon.com/gp/product/B07DM2YMT4/ CYT1100 aka CY110 aka EC11 I am using ...
John's user avatar
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Arduino not recognizing external microcontroller

I've been trying to follow the official Arduino instructions on how to program and power an external breadboard, and I've gotten a pack of ATmega328p's that may or may not have been preloaded with the ...
Daneolog's user avatar
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breadboards and accurate voltage measurments

I am trying to setup a thermistor(PT1000) to work with arduino. For that I used voltage divider and 5V pin as the voltage source. I was getting very unstable results so I removed the thermistor and ...
sanjihan's user avatar
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411 views

Failure to recognize the Arduino Mega2560 R2 board by the computer

I am using an Arduino mega2560 R3 My Arduino port is not recognized by the computer.led on is green,leds Tx and Rx are yellow and led L is blinking constantly(According to the figure).I used an ...
ali's user avatar
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Whats common practice when using more components than there are pins?

I have a project where I want to use several motors (servo and stepper) which are activated with an RFID and show info on a display. What’s common practice or a smart way to get past such limitations?
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What is the correct way to externally power a MKR 1010 WiFi

I'm a little confused by the powering arrangements of the MKR 1010 WiFi. I need to power it on a breadboard from an external power supply. I will not be using a LiPo battery and I need it to work when ...
Tim Long's user avatar
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How do I wire a ground rail to a VEROboard?

I’m looking to move my project from a breadboard to a vero board. However, I’m not sure how to go about soldering in my ground and power connections as the veroboard doesn't seem to have dedicated ...
Yemi Davis's user avatar
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3 answers
108 views

Where to go after Arduino?

I apologise in advance if this question is not right for this Stack or if it has been answered before but here goes. I have been learning C/C++ using the Arduino Uno and have gotten the hang of it now ...
Miles's user avatar
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Where is the positive and negative holes on the arduino mini breadboard?

I have the mini arduino breadboard. The pins go from A to J and 1 to 17. On the larger breadboard, there are symbols + and -. My breadboard doesn't have those two sections to put wires in. Does anyone ...
clueless-genius's user avatar
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Else Statement Never Functions As Expected

I've been working on a rather simple Arduino-breadboard project, that is supposed to imitate a traffic light intersection. There are two sets of lights, one called the North-South lights, and then the ...
Zayd's user avatar
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Adding a common activation pin to a group of buttons

I'm working on an Uno, which has only two interrupt capable pins, but i need at least three buttons to wake it up from its power saving mode. Is there a way to wire buttons such that, in addition to ...
none none's user avatar
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Still getting "stk500_recv(): programmer is not responding" while uploading to bare ATmega328P

SOLVED! See bottom. I know this question has been asked a lot (believe me, I've been Googling for solutions for 3 days, and have come across many posts on SE), but none of the posts I've found have ...
Carl S's user avatar
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2 answers
605 views

Using Arduino UNO as FTDI

so , just bought some pre-bootloaded ATmega328(p/pu) to which I need to upload sketches on a breadboard using uno TX and RX pin as FTDI Here is what I am to do. I connected Uno GND and Reset . ...
Subha Jeet Sikdar's user avatar
1 vote
0 answers
54 views

Arduino Micro Breadboard USB Not Connecting

I have been working on getting an Atmega32u4 connected to USB. I lifted the connections from the Arduino Micro schematic for the preliminary schematic shown here. When I connect the chip to USB, the ...
barntaco's user avatar
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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 ...
SD'Anc's user avatar
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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 ...
Machi's user avatar
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1 answer
273 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 ...
TechHermit's user avatar
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2 answers
86 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 ...
TheCirclesSquared's user avatar
2 votes
4 answers
2k 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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3 votes
3 answers
4k 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 ...
Brandon Avant's user avatar
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2 answers
141 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 ...
David P.'s user avatar
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1 answer
4k 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 ...
Hanim's user avatar
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-1 votes
1 answer
163 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 ...
naga chaitanya's user avatar
1 vote
2 answers
1k 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() { // ...
Abrar Hossain's user avatar
1 vote
0 answers
113 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> ...
MerryGR's user avatar
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1 vote
2 answers
538 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 ...
gema's user avatar
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0 votes
1 answer
2k 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 ...
Robert Munteanu's user avatar
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1 answer
211 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 ...
Raiyan Sobhan's user avatar
2 votes
1 answer
871 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 ...
Arthane Vixtion's user avatar
-1 votes
1 answer
159 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 ...
sirshakir's user avatar
3 votes
2 answers
10k 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 ...
Stacey1234's user avatar
2 votes
0 answers
119 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 ...
auphynne's user avatar
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1 vote
2 answers
177 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 ...
LandonZeKepitelOfGreytBritn's user avatar
-1 votes
1 answer
90 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 ...
Win Dee's user avatar
0 votes
1 answer
249 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 ...
Jake's user avatar
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1 vote
1 answer
1k 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 ...
Sinan Samet's user avatar
1 vote
1 answer
102 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. ...
iowaqas's user avatar
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15 votes
8 answers
11k 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 ...
Saad Bashir's user avatar
0 votes
1 answer
92 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 ...
ci7i2en4's user avatar
0 votes
5 answers
1k 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 ...
Mohit Akundi's user avatar
1 vote
1 answer
56 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 ...
cnmoya's user avatar
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7 votes
3 answers
12k 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 ...
N Sharma's user avatar
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0 answers
295 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?
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