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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2answers
213 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
50 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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2answers
210 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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61 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
208 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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1answer
56 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
96 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
201 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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40 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
56 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
546 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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113 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
238 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
70 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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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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17 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
114 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*. Separated by a ",". This is the code I'm working with. #...
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247 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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160 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
48 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
1k 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
106 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
188 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
1k 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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36 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
334 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
565 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
287 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
392 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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1answer
2k 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 /* * -------------------------------------------------------------------...
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2answers
171 views

Distance measuring utilizing (1 or 2) Arduino Nano's

I would like to develop a small-distance measuring device that will be primarily used in indoor scenarios to measure a distance with cm accuracy (mm if possible). The device would be in a small form ...
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2answers
1k views

How do I choose a battery to power my Arduino Nano project?

I was wondering if anyone would be willing to teach me how to logically choose/calculate which battery I should/can use to power my Arduino nano project (so I don't have to keep it connected to my ...
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2answers
494 views

How to read a PWM OUTPUT PIN value?

How to get a pwm pin value that is in pinMode OUTPUT? How to get a digital OUTPUT PIN value: #define pin 3 void setup() { pinMode(pin, OUTPUT); Serial.begin(9600); } void loop() { delay(...
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1answer
93 views

Intermittent jittering servo

I'm controlling a Hitech HS-625MG servo from a 10k slider via a Nano. For a while the motion tracks the slider position even when moved quickly. Then, for no reason I can find, it will stop following ...
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1answer
244 views

vk2828u7g5lf GPS module over SoftwareSerial

So my goal was simple. Trying to get a GPS speed, and show it on a display (later use it to control a stepper motor). I am using the vk2828u7g5lf GPS module from Banggood, which after days of ...
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1answer
151 views

FreeRTOS Timer Use

I use Timer1 on an UNO to generate a 38KHZ signal for IR communications. It all works as expected. BUT, I need to convert the code to run as a task under FreeRTOS, and can't seem to find any details ...
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1answer
39 views

Button that gives an Input, Has a small delay — then gives another [closed]

I'm pretty new to the Arduino scene, and my question will likely be solved simply by some more experienced fellows. I'm trying to create a code for a switch/ button that when you press it, it ...
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1answer
78 views

How would I go about powering addressable RGB LED light strip? [Arduino Nano] [closed]

The addressable RGB LED I have is WS2812B. I plan on controlling the LEDs via an Arduino nano. I have a total of 188 LEDs to supply power to. Would I require anything between the addressable RGB LED ...
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1answer
56 views

I can't make more than one arduino gas sensor work at the same time

I'm doing a school project in which I need to track different kinds of gases, the problem is I can't read more than one sensor at the same time, I'm using four sensors (mq5, mq7, mq8 and mq135) and ...
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1answer
404 views

Resetting I2c Address - MLX90614

I was using my MLX90614 IRTherm sensor flawless and bought two more. I have connected two sensors serial with pull-ups to SDA --> A4 and SCL --> A5. After digging the internet I found out that I ...
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2answers
422 views

could not convert 'digitalWrite(8u, 1u)' from 'void' to 'bool'

I am trying to make some LED lights to turn on when i flick a switch on my RC crontroller. I will connect the signal wire from RC controller to pin 8. The plan is: if i flick the swich, the LED's (pin ...
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3answers
1k views

WatchDog on Arduino Nano - does not recover

I'm trying to add a watchdog on an Arduino Nano, for my code, and I'm following exactly code in this manual, but after the amount of time for not resetting the watchdog- it resets but does not reboot. ...
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3answers
60 views

Do I need the Ground and 5 V pin connect to Led?

I am building an ambilight. So I bought a 3 pin LED Strip which I power with the USB hub from my TV. Next step is to connect it to the Arduino Nano. Is it OK when I only use the dataport from the ...
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2answers
350 views

Arduino Nano- Programer not responding after upload WDT

I followed an example link for WDT. Code was copied as is, and uploaded to Nano successfully. Now- when I wish to upload another code, I get an error message saying avrdude: stk500_recv(): programmer ...
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1answer
94 views

Nano & Ethernet will not write to PushingBox on a workplace network (but will at home)

I have a Nano+ENC28J60 and I'm using Pushingbox which I have setup to write data to a GoogleDrive spreadsheet which works perfectly at home. However when I take it to my workplace it no longer works. ...
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1answer
59 views

Help with simple gradually brighter flickering led

im a newcomer for arduino and sorry for any grammar error. So what im trying to do is replicating a flickering effect found on spacecraft thruster when they about to take off where the fire bursting ...
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2answers
70 views

ATmega328, arduino nano v3 code error saying insufficient ram memory [closed]

the code error says this and im not sure what to do please i need urgent help :(` // Easy bluetooth controlled scrolling text // by Yoruk for Instructable // 26 02 15 : first code // 03 03 15 : ...
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1answer
127 views

TimeAlarms stops working when using setSyncProvider(RTC.get) DS1307

Been working on this project for some time now, like title states when I un-comment setSyncProvider(RTC.get) in the setup the program fails to get any of the Alarm.timerOnce to run. I have been stuck ...
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1answer
554 views

Problem with Pulse Sensor signal

I'm making alarm with input from pulse sensor. When it detect high heart rate then it send a text message. Everything works fine when i am using potentiometer (as input) for simulating triggering SMS. ...
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1answer
240 views

Pull-down resistor value for interrupts

I wonder how to calculate pulldown resistor to make interrupt work? I need to connect 5 buttons to A0 and get pressing event via interrupts. Using different resistors, finally, I made work only 4 ...