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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 have 2 Arduino Nano that will communicate in half duplex mode with transceiver using MAX485. But the master has libraries like Wire.h, uses tone() and also receives UART communication. I'm a ...
steve d.'s user avatar
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I try to use three PWM pins on an Arduino Nano, each with 10kHz. I know that there are timer0, timer1 and timer3 but I wonder if I can combine them while ensuring all three PWM pins to be in sync and ...
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I'm running to an issue when measuring my sensor outputs. Previously I've connected my sensors directly to Nano analog pins and measured fine, but I want to use more sensors so trying a mux. Any help ...
JamesG's user avatar
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So I am working on an Arduino project and have trouble communicating over UART. I have a SIM7600G-H 4G Module from Waveshare and hooked it up to an Arduino Nano ESP32. The connections are as follows: ...
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If I have multiple NODES one on each Serial port (and / or SoftwareSerial port) all of which have the same code for execution can the names of each Serial port be put into an array such that I can say:...
Harry J Crowley's user avatar
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The essence of the task I have a task to connect an external device with my arduino and transfer data to each other via the UART protocol. The external device has 4 pins (Two for power supply and RS-...
Michael's user avatar
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I am trying to set up an Arduino Nano ESP32 so that I can code in MicroPython. I successfully installed Arduino Lab for MicroPython and flashed the firmware onto the device, but when I try to run the ...
ehalstea's user avatar
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I have a bunch of Arduino Nano boards with the CH340 chip. When I want to upload code to a board, it sometimes works the first time, sometimes it doesn't. Afterwards, it mostly doesn't work anymore. ...
Deekay's user avatar
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I'm trying to write an Arduino sketch which pings multiple hosts and switches some RGB LEDs to indicate the status of the devices on my network. This question is a followup of ParseIP in the EtherCard ...
Deekay's user avatar
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I realize that using float results in loading all or at least parts of the floating point library, which consumes a significant amount of memory. How can I avoid using float?
halfbit's user avatar
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The RTC module can output the hours as 165, and the minutes as 165. This is some random number that is different every time. Everything works fine, but at random times I get this. Maybe once every ...
Rodney's user avatar
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I'm trying to modify the pings example from the EtherCard library so I can ping multiple hosts. The end result should be a small device which monitors other devices on my network. Here is the modified ...
Deekay's user avatar
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I feel a little like I am back in 1975 trying to fit my code in 4K of RAM. I am writing some code for an ATTiny88, and the code is starting to get big, relatively speaking. I need to save every byte ...
LesRhorer's user avatar
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Thank you for considering my question. I have been learning Arduino so I can teach coding basics to my son. I came across a fun project to interface bluetooth with an old singing Billy Bass so he can ...
Benjamin Burgess's user avatar
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I recently got two of these ATmega328P Nano SuperMini USB-C boards but none of them is being recognized by my PC or Mac. I'm using the old bootloader setting in the Arduino IDE 2.3.6, CH340 drivers ...
georgmierau's user avatar
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The maximum ADC sample rate for the '328p, using the default prescaler of 128, is given as roughly 10000 samples per second. Maybe I've missed it, but I can't see whether that is the total rate for ...
Jim Mack's user avatar
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I'm new to Arduino development. I use Arduino Nano v3 ATmega328P (Old Bootloader). I assembled 2 small boards, one of which is a transmitter with three buttons, and the second is a receiver with three ...
QuL1ux's user avatar
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I have intermediate-level Arduino experience but it's been a few years... and, I would like to be more confident in a plan before ordering all the parts. So, basically, this is theoretical. The design ...
T. Paul's user avatar
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I have this issue where I'm transmitting sensor data from Nano Sense Rev 2 (transmitter) board to Nano 33 BLE rev 2 (receiver). The receiver keep failing to detect and connect to the transmitter and ...
Anwar Elhadad's user avatar
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I'm working on a linux machine with avrdude and avrgcc. NOT using Arduino IDE. I'm using Arduino Nano 33 SENSE REV2 BLE, trying to upload a sample blink .c program and getting this error. This is the ...
Shubhra's user avatar
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I'm trying to make a box that revolves around a pivot point using a NEMA17 stepper motor. The idea is straightforward: US1881 Hall effect sensor will change state based on magnets on the base of the ...
MDChaara's user avatar
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I am working on communication between a Arduino and ATtiny13, and I need to get this bare-bone communication to work. There is a Arduino Nano powered by USB cable from the PC, and there is ATtiny13 ...
Milos's user avatar
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The code below has a normal bright led on the 5th pin of port F while those on port B, 0, 1, 2 are dimmer. Even if you hold down one button and a moment later simultaneously press another button while ...
NaturalDemon's user avatar
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I'm looking to play songs from a DF Player mini and for that I use the SoftwareSerial.h library but my code keeps compiling an error that it's not there. In addition, the error only appears when I use ...
Nathan Marti-Turon's user avatar
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I'm sorry, could you help me create this arduino-based device? you need to create a tachometer, but not with a hall sensor, but with a photoresistor and an LED. The value should be transmitted to the ...
Aviva Jппаин's user avatar
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I'm trying to get some C code that runs on a PIC18F, working on an Arduino '328P. It uses an 8-bit timer, PWM, and a LUT to generate sine waves. I hope to get it going using Timer2 on a Nano. The PIC ...
Jim Mack's user avatar
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https://youtu.be/oVZgFsWsKPM][1] I'm a beginner in Arduino. I made a 12-hour common cathode 7-segment clock. I made a 7-segment display with LEDs, using Arduino Nano. If I use a long period of 1,000 ...
jagpal singh's user avatar
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I have changed the strain gauge of BH350 modules with another strain gauge of equal 350 ohm strain gauge, but after the change, the readings are only 1 or 2. It's like there is no strain gauge ...
Vishal Jangir's user avatar
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I am using a Arduino Nano 33 BLE and I'm using MicroPython to write code for my board using Arduino Lab for MicroPython. I uploaded a file with the name main.py to my Arduino to test if it would work ...
SimonHéJa's user avatar
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I accidentally connected the 3.3V output and 5V output to the same connection. How bad is that and what issues could that cause? I was busy with making my first project which uses a module which runs ...
R.vW's user avatar
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I've tried to install CH34xVCPDriver on my Mac M3 Sonoma and it's not working no matter what I do. I get an error message that says: Install Tips error: The operation couldn't be completed. (...
Chen Libman's user avatar
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I'm trying to program a board I designed with an ATTINY1616. The schematic is shown in the photo. I'm trying to connect an Arduino Nano. +5V and GND are shared, while the UPDI pin is connected to the ...
NickF_93's user avatar
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I am using an ATTiny88 to measure temperature using a 470 ohm thermistor attached to port A3 on the Arduino. The thermistor is attached in series with an 1870 ohm resistor connected to Vcc. At room ...
Leslie Rhorer's user avatar
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What is a missing puzzle in here, relay, transistor? I would like to pull pin of external device to the ground programatically using arduino's digital pin.
Maleowy's user avatar
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I read several answers, but those can be confusing, because it depends on how you provide power to the Arduino. What if I use a wall adapter with 5 V / 1 A and connect it directly to the Arduino Nano ...
VextoR's user avatar
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How do I create a second output with a different frequency? void setup() { const byte DRIVEa = 3; // Timer 2 "B" output: OC2B pinMode (DRIVEa, OUTPUT); // driver a. TCCR2A = _BV (...
ted thomas's user avatar
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OS: Windows 11 Arduino IDE Version: 2.3.2 I recently opened up my Arduino IDE to find that nothing--absolutely nothing--would compile. Whenever I tried, I got the following error message: Using board '...
Robert Goddard-Wright's user avatar
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I'm measuring how long it takes to drain a battery. An Arduino Nano controls an SSD1036 OLED display, a board with two relays, and an INA3221 voltage/current measurement board. The battery is ...
Hobbes's user avatar
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2 votes
1 answer
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I have a 328P (328P-AUR to be specific, [link]), and in the schematic below is how I've implemented it to a PCB: Uploading a program works fine, but I hink there is an issue with the clock source, ...
Boyfinn's user avatar
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How would I put a delay in the reading of DIC? DIC is a photocell to ground whose light is blocked to stop dice roll. I want to put a delay so someone will not trigger another roll out of turn. The ...
greg's user avatar
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I have a problem receiving heart rate message tranmission data from the reciever. I was able ot transmit the data from the trasnmitter but I am unavke to recieve the data from the reciever side. This ...
Adithya narasimhan's user avatar
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I have a GY-GPS6MV2 connected to a nano. (Also tried UNO same result). RX on GPS goes to TX of Nano PIN 3 and TX on GPS to PIN 4 on Nano. When I run the code below all I get is a set of numbers. They ...
TomTheTec's user avatar
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I'm new in coding with Arduino, and I am trying to make a one hand keyboard with joystick as personal project. I tried to make it print some ASCII characters, but I don't know why the button keeps ...
Burritodeltodo's user avatar
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1 answer
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I am currently using an ESP32-CAM with an OV5460 camera, and I am interfacing it with my computer using an Arduino Nano. I am trying to run a camera web server using the Arduino example code. I have ...
Kyle Hurst's user avatar
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1 vote
1 answer
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I've been trying to do a sort of "crash course" in Arduino but there's something I'm still confused about. I've read about programming ATTiny microcontrollers using Arduino boards, and I've ...
BirdsInMyBrain's user avatar
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I am working on a simple code to write data to a MicroSD card using Arduino nano ESP32 (ABX0083) and Df robot SPI MicroSD card module(DFR0229). I am not able to write to the SD card. I get the error ...
Rekcoj's user avatar
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I'm trying to implement an Arkanoid game on a 16x16 RGB matrix (the library is Adafruit_NeoMatrix). The blocks are 2x2 squares, and there are 3 rows with 8 blocks in each. The current state of the ...
SNBS's user avatar
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I made code to make 2 servos work. the sequence of working is to make the servo 1 start rotate 2 cycles then stop and the second servo start rotate for another 2 cycles then detach both of them. I ...
Salma's user avatar
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Hey all I have a sketch that takes up 99% of my storage space since I am using a Arduino Nano. Although everything in my code fits as-is, there seems to be an issue with me sending a json string over ...
StealthRT's user avatar
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Good day! I've just ran into a problem with a project of mine that I can't really figure out myself anymore. So i'm hoping someone on here will be able to help... First things first, I'm trying to ...
TPoE's user avatar
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