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The Arduino Nano is a small board based on the ATmega328 or 168. It has male headers, so it can be plugged directly into a breadboard. It is small and compact, and features a USB chip.

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I'm new to Arduino and my question is rather theoretical. I have an Arduino Nano board (Atmega168 processor), a button, a display. I have written a button handler that does not stop code execution. My ...
ONamaeWa's user avatar
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I upload code into arduino nano using a self-made PCB with bluetooth using this method. I was initially using Arduino Nano (chinese Clone, the one with CH340G) and Bluetooth module HC-05 (version 3.0) ...
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11 votes
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When trying to upload the blink sketch to my (unofficial) Arduino Uno, I get the following error: avrdude ser_open() can't set com-state for "\\.\COM3" I have programmed this Arduino before using ...
juice's user avatar
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2 answers
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I'm trying to control a heating element with PWM with an Arduino Nano, but the problem is even if I set the duty cycle to 0 it gives a tiny spike. I want to generate a square wave of 1Hz and that's ...
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2 answers
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I have the following problem/idea: I have a electronics workbench and a separate PC desk. Now I have a USB HUB on the workbench, but it doesn't properly work, because the USB-cable to the pc is too ...
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I am implementing a program on Arduino Nano ESP32: the KY-037 microphone is connected to the board and collects five seconds of analog signal. Then, an algorithm is applied to create a 128 x 128 ...
ocrdu's user avatar
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I have been following this tutorial using the same hardware, TB6600 driver, 42HS48-1704A (yes I think its supposed to be 42hs40 but thats not what it says the sticker) stepper but am controlling via a ...
chrisl's user avatar
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3 votes
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I'm working on a tiny ping-pong game based on Arduino Nano. Its modes are "person vs person" and "person vs computer" (the computer just tries to keep its racket at the same Y ...
SNBS's user avatar
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2 votes
2 answers
648 views

I'm having difficultly using an internal timer interrupt with my Arduino Nano to properly capture a specific value from a linear potentiometer and then instantly stopping the actuator. I basically ...
Rohit Gupta's user avatar
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2 votes
1 answer
3k views

I am testing a project on Arduino Nano. I copy-paste the code on the Arduino IDE and click "Upload". I see: No device found on cu.usbserial-<unique id> An error occurred while ...
Motaz Emad's user avatar
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3 votes
1 answer
591 views

Please help. I am learning a lot about Arduino. Most all in lightning. I am a newbie. I play with nano and LED ws2812 and use fastled library. What ask is to make effect like fill effect. For ...
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2 votes
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I am trying to send RF signal from Digispark Attiny 85 (this one) and receive the signal with Arduino NANO V3.0 ATmega328 (this one). Transmitter and receiver are STX882 and SRX882 (these). Library ...
allan's user avatar
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like discribed in the title my temperature sensor goes to -127 after a few minutes of run time, it works again after a restart, I have already replaced the sensor and I'm using the same code for the ...
Dennis's user avatar
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2 votes
0 answers
649 views

I have built a speedometer, based on this youtube video: https://www.youtube.com/watch?v=gKuJxjxNP-k&t=34s The speedometer is for a car, so it needs to be in real-time and accurate, with the ...
jsotola's user avatar
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I have a few cheap Nano clones that I bought online that have worked for the past couple of months. They were working fine today until suddenly the Arduino IDE had trouble uploading sketches to them. ...
Gil's user avatar
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4 answers
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I have a PC upstairs running my 3D printing slicer program (Simplify 3D). In the basement, I have several USB-enable 3D printers. My PC upstairs has a USB-to-RS-232 serial adapter. The serial side of ...
Nick Gammon's user avatar
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2 votes
1 answer
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Arduino n00b here. I currently have an Arduino Nano set up to run 6 servos from a PCA9685 board. I'm looking to add 6 switches and 6 LED indicators to switch servo positions. What I'm curious about is ...
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I need some hand here. I wrote some code for a small arduino console-like device that has five pushbuttons, 128x64 I2C OLED display and arduino nano. And it doesn't work when uploaded to arduino nano -...
Rohit Gupta's user avatar
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I'm new with arduino (nano). I am having problems with Servo MG90S, I cant make it move. Im doing the easiest test, Servo cables connected: Brown -> gnd Red -> 5v Orange -> pin 9 my arduino ...
Austin's user avatar
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1 answer
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I am having trouble uploading code to my Arduino Nano. It has been very trusty in the past, but I am getting this new error when uploading any code to it: avrdude: ser_open(): can't set com-state for &...
KIIV's user avatar
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1 vote
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I have an Arduino Nano RP2040 Connect with two temperature sensors. A DHT22 is connected to D2 and pulled up with a 5 kΩ resistor to 5V, and a LSM6DSOX IMU is built in to the board. Here's my code: #...
Community's user avatar
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3 votes
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I want to communicate between Jetson nano and arduino nano through serial. I wrote a simple script to test functionality but I receive strange data here is the arduino code void setup() { // put ...
user3837286's user avatar
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Having the skill to be stupid has managed to fry not one but 2 Arduino nano boards in the same place (I think it is because this part that smoke came out from of has a lump on it that was not there ...
StarCat's user avatar
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4 votes
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I picked up my Arduino Nano 33 BLE Sense for the first time in a while and ran the classic "Blink" sketch to make sure it was alright. After slight usage, I wanted to play with the onboard ...
ocrdu's user avatar
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2 votes
1 answer
195 views

After reading another post CH340 Nano avrdude: stk500_getsync() not in sync resp=0xa4 I have discovered that the bootloader on current Nano v3.0 has been upgraded. However, the advice given to ...
Raistlin's user avatar
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1 answer
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I am using the NRF module for remote communucation.I have been many research about nrf but my nrf module is not working This is my tranmistter code: #include <SPI.h> #include <nRF24L01.h> #...
Fahad's user avatar
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2 votes
1 answer
140 views

I'm trying to individually control 3 LEDs with 3 toggle switches. This is the code I'm using #define LED_PIN1 2 #define BUTTON_PIN1 14 #define LED_PIN2 3 #define BUTTON_PIN2 15 #define LED_PIN3 4 #...
Sam's user avatar
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1 vote
2 answers
1k views

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 ...
mamatha ces's user avatar
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1 vote
1 answer
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I am making a cansat which will be launched on a sugar rocket. The cansat's Arduino nano will be operating sensors which will read the data and store it in an sd card and also a servo to deploy the ...
Rohit Gupta's user avatar
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1 vote
2 answers
114 views

Working on a project where I get an input where its a comma delimited string like: "255,10000000,42949672950254,12,22". and then the numbers (no commas), would be split into 6 Long ...
Rohit Gupta's user avatar
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4 votes
1 answer
2k views

I have the following circuit: (The Arduino is powered via the USB) The problem is that I the reading from the fan's tachometer signal are incorrect, I tried to add the two resistors as voltage ...
Rohit Gupta's user avatar
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183 views

I'm using a MacBook Pro 2013 Late with OpenCore Patcher. Currently Ventura 13.3.1 is installed. Before this version was installed, I had no problem using arduino on my MacOS computer. But right now, ...
Proxy64's user avatar
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My circuit uses an Arduino Nano which I communicate via Α4 and A5 via I2C. There are several BMP280, HMC5883 and MPU6050 sensors on the I2C line. While I was dealing with these other two sensors, my ...
Roman 's user avatar
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1 answer
2k views

I've been at this for over a week now and still cant get things working. Im attempting to wire up an ESP-01 chip to a Nano to send AT commands over Serial. I've followed many different tutorials, but ...
Rohit Gupta's user avatar
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1 vote
0 answers
209 views

I encountered an issue when I try to send AT commands from Arduino nano to ESP01 I tried to find any tutorial for more helps, but I find nothing. please someone can help me. I tried the tutorial from ...
Salomon Oholo's user avatar
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2 votes
0 answers
1k views

I am at my wits end and hope somebody here can provide some much-needed guidance. My platform is an Asus ROG AMD laptop running Windows 11. I recently decided to try working with Arduinos and ...
BobW53's user avatar
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1 vote
1 answer
1k views

My Arduino needs to do: Run ISR as many times as possible/ as fast as possible. Occasionally receive data over I2C. Output data over SPI in ISR. My question is regarding SPI and ISR. The ...
Community's user avatar
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1 vote
0 answers
471 views

I am working on building a sensor using Arduino Nano 33 BLE that will measure temperature using two thermistors and angle changes. The measured values will be transmitted over Bluetooth to a ...
jsotola's user avatar
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2 votes
0 answers
117 views

my results are here. 0 press--"a" 1st press--"b" 2nd press--"c" 3rd press-- still showing "c" When button pressed 3rd time, It must be repeated to show "a&...
timemage's user avatar
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1 vote
1 answer
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I've manage to build myself an RFID music player which I'm pretty chuffed with. It's definitely a bit home made but it woks and I'm proud of it. I don't know what plug type to buy to sort my problem ...
Juraj's user avatar
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1 vote
1 answer
690 views

#include <PWM.h> int led = 9; void setup() { InitTimersSafe(); Serial.begin(115200); Serial.println(); variable_freq(); pinMode(A0,INPUT); } void variable_freq() { while(true) { ...
Nick Gammon's user avatar
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1 vote
0 answers
92 views

so I am currently creating a MIDI to CV module and am still having trouble with my MIDI input circuit. I am following this circuit as my guideline and am sending MIDI messages via MIDI interface with ...
Harmony's user avatar
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1 vote
0 answers
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I'm building an MIDI to CV converter using an Arduino nano along with a MIDI input circuit, however, when uploading the code and connecting the MIDI to a laptop via USB, the Arduino doesn't recognize ...
Max Ellzey's user avatar
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1 vote
0 answers
428 views

I have a HM-10 module connected to my Arduino Nano that I want to use to get data from a ELM327 OBDII. I have been able to successfully connect to the ELM327 via: AT AT+RESET AT+BAUD2 AT+ROLE1 AT+...
leopardxpreload's user avatar
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1 vote
1 answer
978 views

I am trying to run a thermometer with thermocouple sensor on Arduino Nano. I have bought 4x 7 segment display and 74HC595 chip. Everything is connected like in the attached diagram below (without ...
Vincent's user avatar
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2 votes
0 answers
808 views

I am going to use 4x TPIC6B595 and 4x 7 segment display with common anode. Below You Can find vendor site of this display. https://sklep.avt.pl/wyswietlacz-led-2-30-57mm-zielony-wa.html Here is my ...
Krzychotnik's user avatar
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0 votes
1 answer
2k views

First sorry for my bad english, not my native lenguage. Today I started working on my Arduino nano (first time used). When plugged for the first time the "L" led started blinking, after that I tried ...
geronimo's user avatar
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2 votes
0 answers
78 views

I've been playing around with several Arduino ethernet modules based on the ENC28J60 and the W5500 chipset. All modules are advertised as 10/100M, but in reality only work when the port of a switch is ...
Joe's user avatar
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1 vote
1 answer
2k views

I'm having a really strange problem with my screen. It's connected in i2c to my Arduino Nano and I'm using a rotary encoder to navigate through a menu. At startup everything is fine, but when I change ...
Community's user avatar
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0 votes
1 answer
319 views

So I bought a Arduino Nano and a very cheap soldering iron and solder from Alibaba. I was attempting to solder in some connections and failing pretty hard. A small resister popped off when trying to ...
Nick Gammon's user avatar
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