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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32 views

Best way to ask Arduino for data from Python?

I'm trying to send numerical data from inertial sensors from my Arduino to a Python script via serial (PySerial). I found that if I continuously send the data from the Arduino without stopping, the ...
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30 views

Extremely unstable analogRead() on Arduino Nano when powered from an external source

I'm doing a really simple project with an Arduino Nano and found a problem. The circuit is a simple temperature sensor and a tension read from an analog pin everything showed on a Nokia 5110 LCD. When ...
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need help regarding modification of arduino code [closed]

https://youtu.be/a7cO0Zcwmvw).Can Anyone help me to remove the LED DISPLAY 16*2 code from the given below code(I just need the TM1637 LED DISPLAY code) CODE:- https://drive.google.com/file/d/...
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ESP8266 HttpClient recursive connections to URL to send sensor data

I am developing a project based in Arduino Nano and 2 sensors. In this projects is very important the energy because of the prototype is going to be powered by batteries or solar power. In order to ...
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2answers
36 views

dot matrix arduino turn off the intermittent led

I made a dot matrix that contain 10 row and 12 column , total 120 led. I want to turn on the leds like this picture but when I open ground 1 , 2 and pin 0 , 1 , 2 6 leds light together.what kind of ...
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25 views

nRF24L01+ radio not transmitting anything but says it is

I have a nRF24L01+ radio that was working like a charm for many months now, and a few days back, I was trying to send something and then receive it. The transmitter initialized properly and said it ...
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24 views

Arduino Nano 33 IoT StandardFirmataPlus

newbie here. So I've been trying to upload StandardFirmataPlus into my Arduino Nano 33 IoT so that I can program in Johnny-Five. However I have this issue. I've checked that my port is connected and ...
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1answer
22 views

I2C comunication, ESP->Nano on endTransmission no ACK fron nano

i am trying to communicate between ESP(master) and arduino nano(slave). This is only a prototype and all works fine. But i want to add multiple arduinos and therefor i need to detect if the arduino ...
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Arduino Nano - How to add multiple sensors? Lithium battery requirements? LED requirements?

I am new to arduino and need help with a couple projects I am working on. One involves the use of 2 sensors - one pulse sensor, and one vibration sensor. Both need to be plugged into the "5v"...
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1answer
42 views

MPU6050 Problem with NodeMCU

I am using MPU6050 as a part of IMU of my drone, and I wrote this program for Arduino Nano to fetch the orientation of the MPU6050 module in 3D space. And that works perfectly fine, but when I ...
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regarding ardunio error

Arduino: 1.8.13 (Windows 10), Board: "Arduino Uno" c:\program files (x86)\arduino\hardware\tools\avr\bin../lib/gcc/avr/7.3.0/../../../../avr/bin/ar.exe: unable to rename 'core\core.a'; ...
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digital input pins on arduino nano with standard firmata and pyfirmata are always 'None'

I have connected pin D2 on my arduino nano to high, and tried it out with an arduino c program and it works. However, when I load standard firmata onto the the controller from the arduino IDE and try ...
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35 views

Fastest Communication from NodeMCU to Arduino Nano

For one of my projects, I need to transmit data from NodeMCU to my Arduino Nano, in real time, I used S-Bus, but it quite unsatisfies me, as, slight latency is taking place. I am transmitting a JSON ...
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1answer
33 views

Latency in Websocket

I am using Websocket, for a communication from my mobile phone to a NodeMCU, and transmitting 4 channel, data, through 4 different Websocket Ports. the NodeMCU control code is here: // ============ By ...
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Different Counter Reading on Serial Monitor Vs .96" OLED I2C

I've cobbled some code together from reading multiple sources on the web. Makeatronics in particular to help me get this rotary encoder code together (shout out to them). I'm pretty close to the end,...
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Arduino : Not receiving complete data over Bluetooth when serial printing is enabled

I have written an android application that sends IR codes of different appliances to Arduino over Bluetooth (HC05). Below you can find my android code and data which is I am trying to send to arduino. ...
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29 views

Programming Arduino Nano through Arduino UNO

I am trying to Program arduino Nano using ICSP but the problem is uploaded program only works as longs as Nano is connected to UNO. Here is what i am trying. Upload arduinoISP program in UNO. Make ...
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37 views

Arduino soldering station - introducing error detection code

I found the following soldering station project: https://www.instructables.com/id/DIY-Arduino-Soldering-Station/ I want to add the code for detecting iron over temperature and if the thermocouple ...
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2answers
30 views

How to specify a timer's name depending on the chip it will be compiled to?

I need to enable a timer interrupt for a chip, and in the mean time, I am testing the code on Arduino Nano rather than (feed the chip, test the chip)++. So as part of the code I have to TIMSK0 |= (1 &...
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40 views

Program Nano Every using UPDI port

I have and Arduino Nano and an Arduino Nano Every. I'm doing some experiments and trying to program the Nano Every from the Nano, using the UPDI port. I'm using tutorials like this one that does the ...
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4answers
67 views

Displayng 2 error messages on a 16x02 display

I am trying to display on a 16x02 LCD display 2 error codes. The error message is when one or both thermocouple wires get disconnected and the second error message is when the soldering iron temp goes ...
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1answer
36 views

Can't read PWM signal from 2-pin fan header

I'm trying to get PWM values from a 2-pin fan header on DuetWifi board (it is a 3D Printer Controller Board). Here is some info about the fan connection on that board. From their forum, I got to know ...
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1answer
76 views

Nano: All digital pins do not output anything

New user here. Using the examples provided on the Arduino IDE software I could produce melodies with a piezo buzzer, or have a blinking LED. Not anymore. No digital pin is giving anything. I can see ...
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1answer
37 views

nRF24L01 - Measuring distance using time elapsed

For school usage, my team and I are working on a wristband that will alert the user if they are too close to another wristband (for social distancing). The problem is measuring distance using radio ...
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1answer
55 views

Power supply for Seeeduino Xiao

The Seeeduino Wiki claims that it can run on 3.3V/5V. It doesn't specify if it can step down higher voltages. I am looking to power the XIAO using a battery. It usually uses a USB-C cable which can ...
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2answers
57 views

Power Arduino and LED strip

I saw this question about powering Arduino and LED strip. So, I searched for a 5v 4a power supply and foud this one. How does that adapter provide power for both Arduino and LED strip? I thought I ...
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29 views

How do I recover when Arduino USB Serial Port randomly disappears?

I'm using my computer remotely and have an Arduino Every attached to a powered USB 3.0 hub. Anyway, the Arduino is part of a hardware tool that does some nice things for me. I communicate with it ...
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1answer
47 views

Connecting microSD reader and e-paper display to Nano at the same time?

Pretty much as the question states, I'm wondering if it's possible to connect (this: https://www.waveshare.com/7.5inch-HD-e-Paper-HAT.htm ) 7.5" e-paper display that has raspberry pi HAT and an ...
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3answers
74 views

NRF24L01 Transmission Problems between Arduino UNO and Arduino Nano

I'm a beginner in using NRF24L01 tranceiver module. I tried sending a simple "Hello world" using Arduino Nano and a Arduino UNO with the use of two NRF24L01 modules. I don't get any output ...
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1answer
29 views

Arduino Nano-combo NRF2401

I am using two nano-combo for a RC car and when the remote emitter battery is too down if the car was running and battery finally empty the car was still running...is there any way by programming to ...
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33 views

Radino40 Breakout Board

I would like to control the Radino40 breakout board with arduino. But i don't know if is it possible. I know that the single Radino40 DW1000 antenna could controlled by Arduino through SPI, but my ...
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1answer
48 views

Having problems with running two 74HC595 as a single 16bit shift register

I'm using two of these together to create a single 16bit register which will give me access to 16 outputs. I have gotten them to work but not exactly how I imagined them to work. The code written is ...
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1answer
43 views

Pulling the enable pin on Adafruit PowerBoost to low (It's connected to VBatt!)

I am working on an Tonuino (tonuino.voss.earth), and I am using a PowerBoost-module from Adafruit (https://www.adafruit.com/product/1944) for it. The powerboost-module needs the enable pin driven to ...
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1answer
52 views

Powering a system using batteries

I made an arduino nano IR sensor based auto liquid dispenser. Currently it is being powered by a 12V 2 amps adapter. The 12v adapter is connected to a LM2596 DC to DC buck converter which converts the ...
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1answer
36 views

Relative position using Accelerometer

I have a simple scenario please: Two Arduino Nano 33 IoT devices started moving randomly from the same exact origin(Point = [X0, Y0, Z0]); Can I use the coordinates queried from each device ...
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1answer
41 views

PROGMEM for IR command storage

I'm working on a code that is able to send raw data as IR signal to IR transmitter, the memory of arduino Nano is not enough to store the array in SRAM storage,so i'm about to use PROGMEM to store ...
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1answer
54 views

Trying a crude water level sensor

first of all, Im from Cuba, that means I may have some problems to find parts... I have a little system to measure the water level in my house water tank. The system is pretty rough: a proximity ...
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57 views

i build quadcopter using USB HOST SHIELD + NRF24L01 but the data transmit is wrong

I am building mini Arduino quadcopter project. I am using USB host shield for joystick support and nrf24l01 to transmit the data. Unfortunately, I got wrong data transmitted at the receiver and tried ...
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1answer
51 views

Trying to draw a bitmap to an LED matrix only draws the left half

I'm EXTREMELY new to Arduino and fairly new to programming as a whole, but I thought it would be fun to try and write a program that draws arbitrary 1-bit bitmaps to an LED matrix using the Adafruit ...
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1answer
26 views

Issues with reading numbers from serial port

I've built 2 motor drivers for a robotics project and need to set positions that I want the motors to move to, and read that using the arduino. The arduino then uses a rotary encoder to implement a ...
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2answers
64 views

Bike Gear Indicator Coding Problem

Lack of practice I forgot many function of C & C++... Can anyone help me with this coding Please... I think this is The Main coding: Topic: Gear indicator I first found this, Gear_Indicator_Raw ...
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2answers
73 views

Running a motor for a 3 seconds continuously with and without interrupt

I have interfaced a dc motor and IR sensor to my nano. The DC motor is supposed to run only if the IR sensor detects an obstacle. Now, I'm trying to get the motor to turn off if continuously ...
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17 views

Unable to upload to Arduino Nano [duplicate]

I cannot upload a program to my nano. This was what I could see when I ticked "Show verbose Output during: upload" (During compile it just prints a lot of paths) Arduino: 1.8.12 (Windows 10), Board: "...
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1answer
59 views

Serial Read Data Loss With Arduino Nano

I am trying to use Serial reading from a python serial code (which is running on my Jetson Nano) in my project, but in some loop in my code, my data is receiving wrong. I use Serial.readBytesUntil() ...
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4-20mA output circuit from arduino [duplicate]

I'm pretty clueless about electronics so everything has to be explained in simple terms to me. I have an Arduino with a program which provides a value via the Analog output, so that is anything from ...
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1answer
77 views

Possibility of clean the code?

Good night! Based on stuff I get a bit here and there, came up with a program for an Arduino Audio Selector with shift registers and some features. Working as expected, only missing connecting the ...
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1answer
71 views

Arduino Project Interrupt Error?

I have a project to be made i.e. water Billing System using RFID(Mfrc522) on Arduino NANO. There is one difficulty that I haven't been able to overcome. I hope someone could help me out. Project flow: ...
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1answer
51 views

Macbook Pro CH340 Nano 14201 error

I'm using a MacBook Pro Mojave 10.14.6 to code genuine Arduinos. Been working with multiple Uno R3s, no issue. Got a genuine Nano and get the following error: ser_open(): can't open device "/dev/cu....
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1answer
129 views

Parola library and DS3231 clock

EDIT2: Well, this is the "new" code and it just displays random dots on the matrices: #include "RTClib.h" #include <MD_Parola.h> #include <MD_MAX72xx.h> #include <SPI.h> // Define ...
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Splitting a string in arduino from computer

I am having an issue splitting an incoming string from a computer program to arduino. The incoming format is as follows: 123.456,987.654 \r\n The comma separates the two values. code is this(edit to ...

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