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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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1answer
50 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
67 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
269 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
65 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
41 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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0answers
32 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
41 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
158 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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0answers
74 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
49 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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1answer
76 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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0answers
32 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
58 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
17 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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0answers
11 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
47 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
39 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
30 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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1answer
208 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
426 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
87 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
29 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
58 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
71 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 ...
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1answer
147 views

how to write an int to RFID tag and when read then store that in an array

The writing code is from the MFRC522 Example below: I have added an array to store the value but it does not store it as the same value written to it in the writing. instead it stores it as byte ...
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0answers
136 views

i2c code hanging - tried all connections

I'm trying to connect a TCA9548a breakout to my nano (also tried using an uno), but it can't recognise it - using the i2c scanner it just hangs on 'scanning...' I've tried everything suggested in ...
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0answers
21 views

ZS-040 Bluetooth module is undiscoverable

My bluetooth module is connected to arduino nano using voltage delimiter (to get 3.3V) exactly as its said in this article. I connected it to my phone and was able to communicate with it through ...
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1answer
33 views

Why is IF statement executing on itself

x = 5; Serial.println (x); if (x == 0); { //stuff in this IF keeps happening why ? //Iam too stupid ? }
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1answer
82 views

Send ECG signal with NRF24L01 from Arduino to Raspberry Pi 3

I'm using nRF24L01 to send ECG samples from an Arduino to Raspberry Pi, the type of sample is double after denoising, and I stock them in a byte[8] to send 8 by 8 sample. When I print the sample ...
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3answers
173 views

How to generate .a and .so files to add in arduino project

I know to make a library on arduino ide with source codes, but I cant send my source code to another users who want to use my lib. So I need to make a library with precompiled=true info at library....
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1answer
177 views

How to stop motor after a desired time?

I am trying to stop a dc motor after a desired amount of time !! And the motor starts upon settling on a condition !! From that very moment i want my motor to just run for 5 seconds and stop!! Below ...
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0answers
126 views

RS485 Serial Communication not working with Arduino

I am trying to control 2 devices with my arduino using RS485 communication. Basically switch on device 1 for 5 seconds when I send 'g' to the master. And switch on device 2 for e3 seconds when I send ...
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1answer
110 views

Data Logging without Interfacing SD Card module [duplicate]

I want to log data to a text document without connecting the SD card module. I don't want to print the data on Serial Monitor I want to store it in a file. Is it possible? Can someone help me with it? ...
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0answers
128 views

Arduino FFT Heart Rate Monitor

Part of my project is to build heart rate monitor from Nano and a PulseSensor. I am having trouble working with the Fast Fourier Transform part of the code. This code here is from a library (...
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2answers
73 views

How to safely remove arduino nano from breadboard? [closed]

I did some prototyping with arduino nano in breadboard. And then after i done with the design, I was gonna implement it in a printed pcb so i need to remove the nano from breadboard. And this is when ...
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0answers
25 views

Motion detection alarm that calls back

I need help. I am making motion detector that calls you when sensor activates and i have done the code for that, but the thing is i am beginner and i need to make it when it first time boots i send a ...
0
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1answer
53 views

Program Upload Loading problem

Please help me about this program uploading problem. Arduino: 1.6.13 (Windows 10), Board: "Arduino Nano, ATmega328P" Sketch uses 930 bytes (3%) of program storage space. Maximum is 30,720 bytes. ...
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0answers
59 views

More than 3 SPI devices read by a single arduino

I've been working on a project that involves SSI Rotary Encoders from CUI. They are being read through the SPI interface, and I am bit-shifting appropriately to account for the differences between SSI ...
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0answers
92 views

Arduino based hour counter [duplicate]

I would like to make a hour counter for a particular machine.I have a problem in coding.arduino internal clock can work only till 49 days.my hour counter should calculate 150+ hours.I thought of using ...
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0answers
99 views

Arduino Nano with Arduin Nano Ethernet shield ENC28J60

I have connected the Arduino Nano with the Arduino Nano ENC28J60, and then I connect the Ethernet cable with the laptop and also the Arduino nano with my laptop to load the code and it works just fine....
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1answer
46 views

nRF24L01+ Unable to set address

I'm trying to communicate between Arduino Nano and Arduino Uno using nRF24L01+. I tried using RF24 by ManiacBug and TMRH20, but when I open the serial monitor after uploading the Example Programs ...
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1answer
436 views

What is /dev/tty.usbserial-1420 [duplicate]

I'm a complete newbie with Arduino. I've bought a couple of Nano clones from China. According to supplier description, it is Arduino Nano V3.0 ATMEGA328P ATMEGA328 CH340. Not sure why they list both ...
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1answer
49 views

Arduino should check the same way like a USB keyboard or a USB mouse, if turned on notebook is connected

I have a USB HUB and have connected to it a USB keyboard and a USB mouse. As long I have not connected a Notebook to it those devices don't turn on. 5V is always turned on! So I could charge my phone. ...
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0answers
23 views

Setting up two arduinos connected to separate serial ports with wires in-between

I intend to have both an Arduino Nano and an Uno connected to a PC via the on-board USB ports, but have them inter-connected with wires from one's GPIO pins to the other's (one reads the status of the ...
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0answers
149 views

How can I use an MPU6050 with Arduino to measure linear speed?

I need to measure linear speed of a body which travels 1000 m forward and backward recursively. How can I use an MPU6050 with Arduino Nano to measure the linear speed of a moving object? (the object ...
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0answers
21 views

nRF24L01 and sim800L not working together

Good day, I would like to ask some help for my program code regarding the problem of nRF24L01 and sim800L. I have the code below #include <Sleep_n0m1.h> #include <Time.h> #include <...
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1answer
75 views

I2C potentiometer mess

I bought a few MCP4651 dual 8 bit I2C pots for a project. After browsing the arduino libraries and finding nothing,"No big deal" I thought to myself ... I've already written I2C libraries for other ...
1
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1answer
32 views

Dual power supply using Arduino uno and nano

I had a very vague thought. I was wondering if I could I create a dual power supply using an Arduino uno and a nano. Can the ground terminals of both the boards be shorted and the 5 volt terminals be ...
1
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1answer
261 views

How to chose softserial library use on Arduino project?

I want to do a project that has multiple Arduino communication through UART, that project project one of limit is using Arduino Nano (small and cheap). I need to set 4 serial port instance on Nano to ...
0
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1answer
59 views

Specific formatting of floats and converting them to an array of chars

I have an oled display which can only display 4 digits + decimal point. I need a way to format the number into 4 significant figures; Then I need to convert that into an array of 5 chars (4 digits and ...