Questions tagged [arduino-nano]

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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33 views

Project organization and Arduino board for bee-hives monitoring

I'm new about Arduino and also about the electronic world... I'm a software developer. I need to put in place a project to monitor my bee hives. I have multiple hives in two different places (one with ...
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1answer
35 views

How to add colour change to the strobe coding?

I have this strobe effect working. However, I would like to change the colour of the LEDs after each 'strobe sequence'. How can it be achieved? The code I am using is this one: // Basic code ...
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48 views

Arduino does not boot when SPI lines are loaded

i connected an Arduino Nano to an external SPI Flash using THIS tutorial (russian) and the SPIMemory library. While accessing the Flash works well, i have encountered the following issue: The Problem: ...
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91 views

Delay coding not working as expected

Added second attempt at bottom of code, Please check it, works with out lag time but never turns Vacuum off? This project is pretty well explained in the code description. My main problem is I need a ...
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76 views

Project doesn't work after 2 - 3 times, requires frequent turning off and on

I am new to Arduino and I am working on a project. This project inspired me and I tried doing it. The following code was provided in the description: int maxPeople = 5; // maximum number of people ...
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21 views

can we use TCRT5000 sensor instead of IR proximity sensor?

I am planning to make a human following robot which requires two IR proximity sensors. I already have two TCRT5000 sensor. Can I use it instead of it?
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1answer
72 views

How to show the distance in decimal use sensor TF-Luna Lidar or more specific value

I want to ask about TF-Lunar Lidar, I've written code to know the distance in cm by reading the array data, right now I need some help about how to read the data so it can be showing the more specific ...
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50 views

How can I read data from power analyzer with arduino NANO through rs485

well I have this power analyzer. And I want read data with Arduino NANO, through rs485 here is product and here is the register table of this device. I am using boud rate 9600, no parity, slave 1 ...
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1answer
88 views

Why is my Arduino Nano's buzzer clicking?

EDIT: I'm so sorry but the clicking wasn't coming from the Arduino but from the piezo buzzer! I was wrong and I'm so sorry for misguiding you! I recently bought an Arduino Nano so that I could ...
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3answers
620 views

How to implement Arduino NANO as a RS-232 to USB adapter (Or do I need a Arduino Mega?) For 3D printer comms

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 ...
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36 views

Can i use PL2303 USB to TTL Serial Converter Module send keystrokes using Arduino nano?

If I can, which library to use (an example code will be great). Here is the module:
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2answers
47 views

Would someone provide an example of extracting data from a char array?

I have tried so many things now that I am just confused. I am not understanding the way char arrays work. I can't get the date and names extracted. And when I use just strings, I jam up the memory. ...
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24 views

Nano 33 BLE Sense LED flashing 3/5 slow/fast after upload

I'd successfully got my Nano 33 BLE Sense to read accelerometer data and subject to there being a difference between current and last readings, to send this via the EasyTransfer library to an XBee ...
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1answer
52 views

Substring: What is causing my output to be truncated?

I suspect that I might be using too many resources, because of the strings, but I am new to Arduino, so not sure where I am going wrong. Any help would be appreciated. What it should do when complete:...
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1answer
334 views

Multiple Wire.write() not working for Arduino Nano I2C

Code for Master #include <Wire.h> void setup() { Wire.begin(); Serial.begin(9600); } void loop() { Wire.beginTransmission(9); Wire.write('c'); Serial....
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280 views

Problems with Hardware Serial (UART) on Nano 33 BLE Sense

my new Nano 33 BLE Sense arrived today. I'm working on a project to send data from the the Nano via an Xbee S2C module to a receiver module connected to a Nano 33 IoT. I had the project working ...
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42 views

How do you know what to call the digital pin your using? changing the sensor pin your using

I downloaded a water flow sketch and got it working on a bread board using an Uno, and a LCD shield. I what to make it on perf board using a Nano, and an NOT I2C LCD. I soldered it all up, got "...
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1answer
41 views

Arduino inspiration device [closed]

I seen a video on a instapration device using a e ink screen and a nano, i has the quotes in a array how do I randomize the quotes that show up? and I want to be able to send quotes from my phone
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1answer
45 views

Why AnalogRead shows value (395) when its on HIGH State ? why not shows 1023 when its high State

I Took a output from ESP8266 and Connected it with Arduino Nano Analog input A0 i use BLYNK app to on/off D0 pin in ESP8266 , and i connected ESP8266 D0 pin with Arduino Nano A0 analogPin. when ...
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1answer
100 views

connect USB keyboard to Arduino using clk and data wires

Edit: What I'm looking for is some kind of library which could be used with an arduino to read the HID protocol output from the Data+ and Data- cables of the USB. ========== If I cut the cable of a ...
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0answers
28 views

Reading ground signal from circuit

I am trying to detect whether a signal is high or low from an ESU LokSound 5 decoder for HO locomotives. My idea was to use one of the auxiliary pins used to drive an LED (AUX 3 in my case). The ...
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3answers
69 views

Is there any way to create some AI with Arduino?

Is there any way to create some AI with Arduino?. The question is just that. I would like to give some intelligent (explore the house, trigger alarms, etc) to a rover but I dont have so much ...
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2answers
33 views

How to change Windows 10 Device Manager so Arduino NANO COM3 can operate on COM4

The Arduino ATmega328 NANO uses COM3 on my WINDOWS 10 computer, but COM3 is NOT available. QUESTION: Please explain in detail how I can change this Arduino NANO to operate on COM4
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17 views

Arduino NRF24LO1

I have a problem with transmiter (Arduino uno) and receiver (Arduino nao). When I am trsmiting that I receive that: An this is my code for receiver #include <SPI.h> #include <nRF24L01.h> #...
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65 views

Code for Heart Rate Detection using PPG Sensor

I am using the "MIKROE Heart Rate 3 click" PPG sensor (https://www.mikroe.com/heart-rate-3-click) and an Arduino Nano (https://store.arduino.cc/usa/arduino-nano) to find heart rate ...
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26 views

How to use an Arduino along with a PPG sensor to find respiration rate [duplicate]

I am working on a project where I am trying to determine respiration rate through an Arduino Nano and a MikroE Heart Rate 3 Click device. I have been working on this for a few months, reading ...
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36 views

How do I measure the analog PPG signals from my Arduino Nano that's wired up to the Heart Rate 3 Clicker

I'm trying to find a code that would take the PPG signals from the MIKROE-2036 Heart Rate 3 Clicker and process the information through the Arduino Nano to find a person's Oxygen Saturation. Basically,...
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3answers
115 views

Create a dead zone for joystick

I'm trying to create a dead zone so the joystick will turn the motor off completely when in the center position. It's much too sensitive and will start the motor if barely touched. How could I fix the ...
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50 views

Interfacing Arduino nano ,adxl335 ,nrf24l01

I'm trying to make a project with this conection diagram but I don't think it's correct , and my adxl sensor died . Can you help me with a modified one ?
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2answers
65 views

I need a good battery reccomendation

I have simple project composed of an Arduino Nano, a HC-05 module, and a small toy DC motor controlled using a L293D driver, I want to be able to power this circuit entirely using a battery, here is ...
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1answer
38 views

Arduino RTC SD Card problem

I am using a script on an Arduino to record BME280 data onto an SD card and to display it on a lcd display. To have a valid time stamp I am also using a DS3231 RTC module. I set the time succesfully ...
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28 views

Hello I am working on getting a pwm signal with arduino nano, I am new to Arduino and i need it for a project [closed]

I want it so that When I apply 1v to analog input i get a pwm signal of 50% duty cycle. When I apply 2v to analog input i get a pwm signal of 80% duty cycle. Can someone tell me the code on how to do ...
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1answer
25 views

Updating mysql data using SIM900 and Arduino

Thanks in advance for your kind support. I am not an expert but have little understanding of concepts and trying to integrate various things to get some useful projects for my purpose. I want to ...
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1answer
23 views

First Project (auto garden)

I've been tinkering for quite a while and I'm looking to try out an arduino to control an automated small garden project for growing seeds. I've never done any coding before and am looking for some ...
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1answer
84 views

DS3218MG Servo - Not working with power supply

I'm trying to run my DS3218MG Servo Motor with an external power supply and my arduino nano. I'm using the following code: #include<Servo.h> Servo Myservo; int pos; void setup() { Myservo.attach(...
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1answer
35 views

Thermistor returns correct value on Arduino Nano, completely fails on Arduino Uno Wifi Rev 2?

I am completely baffled. When I wire the thermistor into my Nano, everything reads completely fine. Then when I switch to the Uno Wifi Rev 2, I get negative numbers -40 to -80 when I was reading 24 on ...
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1answer
71 views

what voltage level is a digital low for the interrupt mode LOW?

I am learning about interrupts and one of the interrupt modes is LOW which triggers anytime the pin is a digital low. Can someone tell me what voltage that is for an Arduino nano? I did a google ...
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1answer
68 views

How to use pyserial to write two separate message?

I'm using pyserial to communicate with my arduino. I set up the connection and everything works fine. Now I have these two writing commands: pyserial.write("conn".encode()) pyserial.write(&...
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43 views

nRF24L01 +pa +lna link does not communicate

I’m trying to create a link between two nRF24L01 units. Each nRF24L01+-based module (purchased) is connected to Arduino Nano on a custom-designed PCB. The printed wiring is per the hardware ...
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1answer
81 views

Arduino nano KiCad symbols

Can anyone explain me the difference between the symbols for Arduino nano in KiCad? Is there any important difference at all? All of them seem to have all basic pins.
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18 views

want to get data from one IMU and Arduino simultaneously using I2c communication

I want to get data from an other Arduino and IMU using I2c communication and wrote a code given below but it is not working for me , #include<Wire.h> // Define Slave I2C Address #define ...
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2answers
132 views

Strange behavior from uint32_t, acting like signed int (Nano clone)

I'm having trouble with these variables. As you can see they're uint32_t type, so they should have a maximum value of 4 million or so, but they're rolling over and going negative at 32,767 like a ...
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1answer
50 views

Controlling op amps amplification ratio by arduino

Is there any option how to control amplification ratio of operational amplifier by some logic signal which can be produced by arduino? I am talking about some clasic op amp like lm356 or ui741 in ...
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2answers
67 views

LEDs always dim with arduino nano

so I'm making an animated LED brake light using arduino nano, similar to this: https://www.youtube.com/watch?v=d5Ohzg3JKq0&ab_channel=IMEEMADE I have 18 channels, with differet amount of series ...
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49 views

How can I store a value of 1000 over to EEPROM of Arduino Nano?

I need some of your feedback and guidance. In my prototype project powered by Arduino Nano(Space Constraint), it will operate continuously until it reach a maximum of 100 hours. Once it reached 100 ...
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26 views

Having trouble compiling in VsCode when including arduino libraries. (Win10)

I recently switched over to Visual studio code and away from the arduino IDE though I am a novice at both. When using VSC and the neopixel library and sample code(strandtest) containing animations ...
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47 views

Stable amplitude of amplified signal

Is there any circuit with opamp where can be (by arduino) set constant output amplitude which doesn't depend on input signals amplitude?
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34 views

How to modify this code to control a stepper with buttons

I want to change this code to use 2 buttons instead of the pot. I use this code for one motor but I need another motor that uses buttons instead of a pot. I started to modify it, I commented out some ...
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2answers
99 views

Getting different numbers after sending an unsigned int 8-9 times between Arduinos via Serial

I am trying to transfer unsigned int values between 2 Arduinos. When sending 61805 for the first 8-9 times, I am getting 61805. But after then after these numbers: 61937 28013 61937. Sender's code: ...
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1answer
24 views

how to use Nano instead of Uno3 to operate DC motors

OK I have the Logitech G29 Wheel and Pedal setup that I use for my Racing Sim. On YouTube there is a gentleman (amstudio) who has used motors on the Gas and Brake pedals to give some realism to the ...

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