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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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14 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 ...
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1answer
24 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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27 views

TRRS breakout board connection to Arduino Nano

Is there any way to connect a TRRS breakout board to an Arduino Nano? The audio signal is going to be coming from my laptop which is an analog signal
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25 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
18 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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19 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
21 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
45 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
31 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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21 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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27 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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8 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
34 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 ...
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1answer
18 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 ...
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1answer
172 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 ...
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1answer
26 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 ...
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1answer
45 views

ATTiny85 I2C connection with Arduino Nano

I am trying to send and receive data using I2C between an Arduino Nano and an ATTiny85. The ATTiny is mounted on this board: Link I've tried to reach the slave with the simple I2C scanner, but I don'...
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35 views

ATMega328 AU bootloader burning issue using Nano

We are trying to burn bootloader into ATMega328P-AU SMD. We have taken the reference of the link and did the same. We checked wire connections and all looks fine and we tried with two chip with two ...
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1answer
35 views

Outputting 400 mV using Arduino Nano PWM pin

I am trying to output analog voltage (400 mV) using Arduino Nano PWM pins. Is it okay to directly connect (using jumper wires) the PWM pins to the Vin+ of the INA219 current sensor? I badly need it ...
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2answers
44 views

Choosing a motor for my project [closed]

Sorry For my bad English. I will start to make a mini conveyor (100 cm x 30 cm) with an Arduino Uno. What is the best motor should I choose for my project ? - Stepper Motor ? - DC Motor ? Etc. ...
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1answer
15 views

Is it possible to connect miband2 and arduino nano (?)

I want to make an IOT project using an Arduino nano and I need heart rate sensors. I I have a miband2. So, is it possible to connect them ?
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16 views

nRF24L01 multiple node ping pong example

I have used simple ping pong example found in maniacbug library. I am using Arduino nano + nRF24L01modules. With this I have one transmitter and two receiver. transmitter sends data on channel zero ...
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2answers
77 views

Risks when commanding multiple chips with same address via I2C

I know that I2C devices are supposed to have unique addresses when used. What if I still use multiple devices with the same address, what can go wrong? Let me describe the situation: I have multiple ...
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0answers
22 views

12v relay using arduino [duplicate]

I want to control a 12 V relay using an Arduino 5 V signal, but due to some unknown reason the relay does not work. I am using a BC548 transistor as a switch for relay.The relay only triggers when I ...
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1answer
43 views

12 V relay using Arduino [closed]

I want to control a 12 V relay using an Arduino 5 V signal, but due to some unknown reason the relay does not work. I am using a BC548 transistor as a switch for relay. Please suggest where I go wrong....
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1answer
19 views

Negative currentmA and Shuntvoltage

Why is my INA219 current sensor gives a negative currentmA and Shunt voltage? My sensor is connected in a glucose test strip connector. The current is from a glucose biosensor? Is it possible that my ...
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0answers
30 views

How to power an Arduino Nano without mini-B USB port?

I'm new to Arduino. I want to power my Arduino Nano with an external DC source, not with already attached mini USB port. I tried, but fail. Please help me to understand it. Thank you.
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34 views

Combining sketches

I have two codes for my to sensors and they work separately. However, I need to combine them in one program please can you help? The pulse code /* PulseSensor Starter Project and Signal Tester * ...
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2answers
44 views

what can be maximum number of vertical columns that can be chained using shift register for an led dot matrix using arduino nano [closed]

I have made a 8 x 24 led matrix using shift registers and I want to increase the columns that is 24 x 24. Can I do it using shift registers or is there any limitation in expanding rows?
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1answer
69 views

I need help with U8GLIB library

I have a project which uses a 128x64 oled display. I have to use the U8GLIB as the available displays change from SSD1306 to SSH1106 depending on when you buy it which that library covers both ...
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0answers
20 views

Arduino Nano driver not installed

I just bought a new Arduino Nano but the problem here I have is that when I connect it to my computer the windows popup says driver not installed. What do I do?
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1answer
58 views

How to use millis instead of delay on Arduino for independent time intervals for two output pins

I wanted to use millis for the code below but stuck in between . can anyone help to change the given code to millis? Code here: void set(){ digitalWrite(on, HIGH); // turn the motor on (...
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2answers
61 views

Interconnected Arduinos via digital pins and magnets

Before i get too far into the design phase of a project i have in mind, is there a way to connect arduinos in a non-master/slave manner to pass a few different combinations of HIGH/LOW (say 5) or '...
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0answers
11 views

Trouble with upload arduino nano board [duplicate]

I have a problem with the project 'ugly bug'. As I load my program I get the note stk500_recv(): programmer is not responding avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x40' Has ...
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0answers
14 views

How can I power up my Arduino Nano for project of Rocket Data logging?

I am building a Model Rocket for which I need arduino nano to log data.But,I dont know how to power it up once it goes off the ground.Can anyone explain?
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2answers
62 views

Memory problem? dtostr() and strcat()

I've been dealing with this for quite a while now and searching all over for answers.. I'm trying to put together two floats into a char*. Seperated by a ",". This is the code I'm working with. #...
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55 views

code for OLED display suddenly crashes arduino Nano

Today i've been playing with my monochrome oled 128x64 adafruit screen. I've got it connected using SPI. Previously today i had no problems att all and i was able to print messages and variables on ...
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43 views

Double precision floating point operations using Arduino

Today we were programming something in university which dealt with really large numbers (even larger than unsigned long) and we had to create a code that broke the numbers into an array and performed ...
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0answers
41 views

LED turning on late

I am using an Arduino nano and an ESP8266. I have burnt an Arduino, but when I send a request to the Arduino LED, it takes some time to turn ON. Here is my code: #include <SoftwareSerial.h> ...
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1answer
230 views

SSD1306 allocation failed when adding a constant

I am trying to get this code working: #include <Button.h> #include <SPI.h> #include <Wire.h> #include <Adafruit_GFX.h> #include <Adafruit_SSD1306.h> #include <RTClib....
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1answer
61 views

Does UNO and Nano have the same pins?

Do Arduino Nano Atmega328p have the same pins as Arduino/Gizduino Uno Atmega328p?
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1answer
49 views

Arduino Nano Midi to cv convertor interesting issue

I created the circuit in this schematic on protoboard, and the code, https://github.com/elkayem/midi2cv I use a dual opamp and a single dac, because i only need note and velocity. The opto i use is, ...
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1answer
81 views

Arduino Uno: avrdude: stk500_recv(): programmer is not responding

I have an original Arduino Uno board purchased directly from the official arduino website. I have used it successfully with IDE v1.8.5 on my Windows 10 laptop for various projects in the last 6 months....
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0answers
29 views

Differing behaviour from Arduino Nano when plugged into laptop vs power source

Well here's a weird one. I'm monitoring a mic on an analog pin of an Arduino Nano and using the variation in voltage to control and LED. When plugged in to my Laptop (USB 3, 500ma available, the ...
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4answers
179 views

How to blink led and run another code at same time?

I had written a code to calculate rpm of the motors using IR sensor and Arduino nano and displaying it on OLED . With that I want an LED to blink always. Here is the code what I did: You can skip the ...
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2answers
205 views

Arduino NANO hardware SPI not working

I have an Arduino NANO clone and a 2.4" ILI9341 TFT display. The VCC and LCD pins of the display are connected to the 5V pin of the board. The GND to the GND. All the logic pins are connected to ...
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2answers
105 views

Nano damaged. Power LED OK. USB Detected. No Sketch upload. No Program running

seems i damaged one of my Nanos. i have to say i am new to Arduino and have basic electronik skills and i realized after shopping via amazon that the Nanos i have are clones with CH340G. never the ...
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1answer
34 views

My SIM800L isn't working in England. Alternative board for new EE/T-Mobile 3G PAYG SIM?

EDIT: I live in the UK, and I've read some articles just now that this module never worked after 2017 in the USA because it needs "a two frequency network"?, and support for 2G(phased out in America?)....
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1answer
64 views

MPU6050 Calibration [closed]

Why does the MPU6050 IMU sensor not require calibration? I've used other gyro sensors on RC helicopters that required calibration at boot. Also, how does it know what its neutral position is ...
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0answers
245 views

Emulating a generic Mifare USB peripheral device with RFID-RC522

Hardware Dev Board: Arduino Nano V3.0 Module: RFID-RC522 13.56 MHz Cable: USB A - USB Mini B Configuration Physical Code /* * -------------------------------------------------------------------...