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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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How to Use a Half Bridge Micro Load Cell for Weigh Scale

Could anybody please tell me how to use a Single Half-Bridge Micro Load Cell along with an HX711 module, Arduino Nano to make a weighing scale? I've attached an image of the kind of load cell I'm ...
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32 views

arduino nano problem [duplicate]

I tried this code in an arduino uno card and it works in my nano arduino it dosent work
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1answer
24 views

Connecting multiple RS485 together

I am trying to build communication across multiple Arduino using RS485. When i am trying to connect 3 Arudino nano together using breadboard my code doesn't reach slave where as if i just if i do ...
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11 views

Arduino NRF24L01 transceiver reading trouble shooting

I bought a NRF24L01 from Amazon a few days ago but am having trouble getting readings. When ever I open my serial motor instead of a message I get a stream of "?"s I know that I did something right ...
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2answers
77 views

How to send and receive unsigned int from one arduino to another arduino

I'm trying to send some big numbers ranging from 0-62000 from one arduino to another via serial communication. I'm using unsigned int to hold values from 0 to 65535. And I'm using serial.print() and ...
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22 views

Basic communication with nrf24l01 between nodemcu and arduino nano

I spent the last two days to find a way to set up a basic communication between a nodemcu amica and an arduino nano with a nrf24l01 module; all of this without success.. Here the code uploaded on my ...
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1answer
41 views

Basic if endif not working and I'm puzzled

I got this small code I'm trying things on for like an hour. int receivers = 0; #if defined(PPM_RECEIVER) receivers++; #endif And I just cannot get it working, It keeps returning a "'receivers' ...
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2answers
28 views

Arduino nano / uno analog pin

I'm working on a project where I need 7 analog pins. I read the datasheet of Ardnuino Uno : 6 analog pins available. So I decided to use an arduino mega with 16 analog pin available. Then I saw the ...
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26 views

Resistance measurement using loop resistance technique

Im trying do a circuit to measure resistance between Neutral and ground, for this I tried ohm law method i.e., to obtain R = (V/I). Voltage is known value 25 Vac, Current value is measured using ...
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52 views

Arduino UNO R3 clone acting as Arduino Nano

I just got a bunch of Arduino Uno R3 (ATmega328P + CH340).In arduino IDE when i'm selecting board as Arduino UNO then i'am getting this error avrdude: Version 6.3-20171130 Copyright (c) 2000-...
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1answer
20 views

I am not able to set the correct configuration of sound module

I have been trying to make sound reactive LED lights but my sound module is detecting only very close voice the LED react only when I press it to the speaker with my hands I have tried to set the ...
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24 views

ESP8266 accepts commands but returns nothing

I've been struggling for a couple of days now with the module ESP8266. I have tested it already with another Arduino (RX-RX / Tx-TX) and I could send some test commands and receive the corresponding ...
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1answer
26 views

exit status 1 'mySerial' does not name a type

I just can't make it work for some reason. I tried #include <SoftwareSerial.h> and I tried #include "SoftwareSerial.h". Can someone help me? #include <SoftwareSerial.h> SoftwareSerial ...
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44 views

how to name master and slave with UART and Serial event

I am trying to implement some small program using below code, now this code works fine and I'm getting data to the slave. But I have more than one slave, so now I'm not sure how to send the Address of ...
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1answer
20 views

Arduino ethercard - passing variables to PHP webserver [on hold]

I have a problem passing variables to browseurl() function in Ethercard.h Library. This one which is below works very well, without problems: ether.browseUrl(PSTR("/test/void/add.php?"), "arduinoID=...
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1answer
30 views

Arduino Hardware serial pins with RS485

I tried asking a question in my earlier post - SerialEvent with RS485 communication it helped me understand Hardware serial and Software serial but i had few more questions for which i started this ...
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17 views

Connecting arduino with MATLAB

I installed Octave support package for Arduino and it is listed in the packages installed when pkg list command is run.But when the command "a= arduino('COM8')"; is run,"error: serial: Error opening ...
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29 views

Long Press/Short Press with a timer

I'm new with arduino, If anyone has some time to look at this code an help me It would make me very happay :) I would like to modify the code so I If short press is made LED would power on and ...
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0answers
6 views

Arduino and SIM800L receiving message not working

I have following code for receiving the SMS, it does receive the garbage value when I sent SMS to module. #include <SoftwareSerial.h> SoftwareSerial mySerial(5, 4); char msg; void setup() { ...
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39 views

SerialEvent with RS485 communication

I am not expert in Arduino programming but i can understand lit bit, while doing review i came across two sets of programs one using serialEvent and one with RS485 library, Now my problem is with ...
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36 views

Proteus - How to Debug Invalid Opcode?

While running a program compiled in the Arduino IDE 1.8.5 and then using the .ELF file inside LabCenter Proteus 8.0, for an Arduino Nano ATMEL Mega 328P, for a code involving the use of the ...
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1answer
45 views

NRF24L01+ (TMRH20 library): Receiver gets blank data

I am working on sample Arduino project for communication over NRF24L01+ (TMRH20 library), everything is working fine with my example except one issue my Receiver gets message but that message is blank....
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1answer
37 views

Morse Interpreter-Microphone Problem

I am working on a morse interpreter. I can now use light-sensor and a regular key as input device and want to add a mic to the system. I recieve the input convert it to text and show it on nokia 5110 ...
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29 views

Arduino Nano v3 not being detected at any COM ports

My Arduino Nano v3 is not being detected anymore at any COM ports in Arduino IDE 1.8.9. There are 4 LEDS onboard; RX, TX, Power and L. The first 3 LEDS are always on. The L one stays off. After some ...
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1answer
32 views

Using an Arduino to manage graphics [closed]

Arduino game consoles are great, but they suffer from low write speeds and low memory. Is it possible to use an Arduino to handle all the back end code and another one for graphics
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33 views

Programming POV Display for Arduino

I can maybe work through a php/sql and css/html method of making a website to convert an image to code, but that is currently a time consuming method (which i will be taking the challenge if doing ...
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1answer
45 views

Applying 5v to analogWrite Pin

I am controlling a motor with an Arduino Nano, that motor is controlled by Cytron MD-10c motor controller. i want to wire a momentary switch in parallel with the analog output PIN from the Arduino ...
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1answer
45 views

Measure 64 different Thermocouples fast

I used the MAX31850K for testing. Its too slow (100ms resulting in around 7 s to wait till i know the temperature of all). I want to be able to measure them all within 1 sec. Should I try build my ...
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0answers
42 views

RS485 Slave doesn't receive any message

I am trying to follow below design to communicate with 2 Arduino Nano, using the example shared here https://github.com/RalphBacon/RS485-Serial-Data-Transmission. When i look at data my slave never ...
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1answer
35 views

HC-05 connecting to Arduino

I have been looking through StackExchange, and searching on the web and cannot find an answer to my issue. Setup: Arduino Nano 168 HC-05 VERSION:3.0-20170601 I am trying to connect my Android phone ...
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0answers
20 views

Coin Recognition from Parallel Coin acceptor to Arduino

I have one project to do where I have one big problem and I need your help. At this stage, it is not a problem for me to write Arduino program for a money receiver who has an impulse output. But the ...
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19 views

Morse Interpreter-(Problem on giving output with LCD Nokia 5110)

I am working on a project where my goal is to give an input from the key(button) with Morse alphabet and project it on an LCD screen and on the second phase I will also be adding a microphone system ...
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2answers
36 views

How many Amps can a Nano Arduino hold for LED project

I'm really new at this, and here is my doubt. What if I need to light 120x WS2812B (5v)LEDs (link: LEDs) using an Arduino Nano? if it takes 60 mAh each pixel, the total amount needed should be around ...
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2answers
37 views

How to power Arduino nano and LED strip?

I am making a project that uses an Arduino nano and a sound detector module to power a 1m LED strip. I got the idea from this video and I am not sure how to power it. My LED strip flashes for a split ...
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27 views

Arduino uno and Nano as master and slave [duplicate]

please help me!! I'm using two arduino (uno and Nano) as master and slave. I wants to control 3 servo which are connected on Nano (slave) by uno (master). Uno have 3 push buttons on it to control ...
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1answer
22 views

I have a problem with my nano arduino and the nrf24l01 as receiver

Hello I have a problem with my nano arduino and the nrf24l01 as receiver . I'm trying to upload my code to my board, but it say that my code have this mistake: Receiver:45:10: error: void value not ...
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20 views

tty doesn't list ttyUSB0 so arduino doesn't list serial ports

Okay so lsusb gives Bus 002 Device 019: ID 1a86:7523 QinHeng Electronics HL-340 USB-Serial adapter dmesg|grep 'ttyUSB' gives [63723.589107] usb 2-1: ch341-uart converter now attached to ttyUSB0 ...
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25 views

BLUETOOTH MODULES Arduino

I am new to the world of electronics so please forgive me if I ask stupid questions. I would like to ask if there is a difference between Bluetooth Modules that state: "for Arduino" as well as those ...
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2answers
55 views

Problem of repetition

I have encountered a problem concerning the repetition of the program that means it executes once (since the sensor passes to 1 it calculates 5 seconds (the sensor is still at 1) after the lamp is lit)...
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0answers
15 views

Can i connect my arduino nano in pin27 in 5V 2A as supply voltage? [duplicate]

I have solar charge controller and it has a usb port 5V 2A. Can i connect my arduino nano in pin27 in 5V 2A as supply voltage?
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7 views

Can I customize RF24Network message.type and where would it be referenced?

I've been out of touch with arduino's and i'm exploring networking a bunch of arduino nano's together using the RF24Network library. All sorts of sensors attached to different nano's. Some will have ...
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0answers
42 views

Lost with Nano and i2c

I've been struggling with some code that was failing to "begin()" any devices on my i2c bus. I've uploaded a scanner program from arduino playground which lists the addresses of any i2c modules found. ...
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1answer
30 views

Help with coding Arduino Nano to run fan through slide switch at specific intervals

I’m trying to use Arduino Nano to run my 5 V PC fan, which, I know it sounds crazy, it’ll be mounted on a piece of Tupperware that’ll control the airflow through it via the fan. However I have no ...
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0answers
21 views

Arduino Nano input voltage

Can I supply an Arduino Nano 5 V 1 A unregulated in pin 27? It has a PIR sensor, a LDR sensor and switch drive high power MOSFET trigger module connected to it.
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0answers
37 views

How I can connect module GSM SIM800L?

I bought a GSM module, and I want to connect it with Arduino but I have a problem. I linked GSM SIM800L with regular LM2596 12 V 2 VA I changed tension to 5 V, So far the GSM is ...
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1answer
81 views

Arduino Nano 3.0 CH340G clone cannot upload sketch from Arduino IDE [duplicate]

I connected my brand new Arduino Nano 3.0 clone with CH340G and installed the drivers. It detects in Device Manager as USB-SERIAL CH340 (COM6). Under the Tools menu, i selected the correct board, the ...
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1answer
47 views

conflict with different i2c devices

I am trying to communicate with two i2c components using an arduino nano - some ADS1115s and some i2c flow sensors each connected to a different i2c multiplexer, but they seem to be conflicting. ...
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1answer
23 views

How can I scan for a HIGH signal on digitalRead during the main loop, while running other things?

I'm working on a program which listens for certain bytes on serial through an if/then/elseif ladder. I want to also check if a pin (say, A15) has been given a HIGH state, by another Arduino with ...
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1answer
23 views

Using Arduino Mega with multiple HC05 Modules as masters, communicating to multiple HC05 Modules as slaves, each connected to separate Arduino

So I have not actually experimented with the HC05 Bluetooth Module yet, but I have read up about it and watched some videos. From what I understand, you cannot use one module (master) to communicate ...
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1answer
29 views

Can I daisychain multiple Arduino Nanos to a single USB port (specialized purpose)

I need to have several Nanos on one USB port. They will have separate power, so power constraints won't be a concern. I need them all to go through the same serial port. They will never get anything ...