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.
1,298
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nrf24l01 not communicating with each other
Since the past few days I've been trying to get two of my nrf24l01 modules to communicate with each other without any progress. I would greatly appreciate any help provided on this forum. Thank you ...
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Unsure how to get started on lighting project [closed]
So to preface, I am brand new to arduino coding, and have no clue what it is I’m doing. But I wanted to experiment cause I was wanting to make some fun lighting additions to costume pieces.
This ...
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While I was trying to upload a code in arduino nano I got this error : [duplicate]
While I was trying to upload a code in arduino nano I got this error
avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x00
avrdude: stk500_getsync() attempt 2 of 10: not in sync: resp=0x00
...
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Arduino voltage divider Vx to mm [closed]
I am new to Arduino and trying to cope with an assigment for my class. I am using an Arduino Nano board and a potentiometer with 2 resistors as shown in the picture. I am trying to write code that ...
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Looking for best methods of remaking the code without changing its functionality, but reducing the code amount by ~10 times [closed]
Can anybody help me with examples of code with matrix? or:
How is the approach to optimize code relative to my example with using "switch case" to "arrays"? Without changing its ...
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Trouble bootloading Atmega328p-au, are my capacitors messing with it?
I'm new here.
I've been trying to flash a bootloader to an atmega328p-au. I use an arduino nano as an ISP and have been double/triple checking my wiring because I'm getting the following error:
...
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HX711.h: No such file or directory although every thing is installed correctly!
I'm not quite new to the Arduino, I did some projects and some of which was using hx711 and load cells, they used to work in the past.
However, I tried it today, and it shows this error
HX711.h: No ...
2
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2
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75
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Arduino read thermocouple Type K with ADS1115
I ordered a ADS1115 so I could measure temperature of a type K thermocouple, but I am not managing to get accurate readings. I had it working while having a normal A0 pin, but since the type K table ...
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3
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Arduino Nano Every USB Connection not working
I have two original (designed and assembled in Italy) Arduino Nano Every Boards from a German Web Shop. They came sealed in original packaging. When I try to connect them to my PC, they don't power up....
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Sim800l v2 send message to multiple numbers
I have this data I'm getting through EEPROM "Emergency Contacts: +639*********, +639*********, +639*********;"
Using this I want to send a message to these numbers.
I have this function but ...
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"if" condition problem / question
I'm new to Arduino and my question is rather theoretical. I have an Arduino Nano board (Atmega168 processor), a button, a display. I have written a button handler that does not stop code execution. My ...
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Incorrect reading from DHT22 (on a Nano board)
I have rigged two different DHT22 sensors to an Arduino Nano board. Both temperature readings are more or less comparable but they produce very different humidity readings.
The sensors are:
Sensor No....
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OpenCV on ESP32 Arduino Nano
I am implementing a program on Arduino Nano ESP32: the KY-037 microphone is connected to the board and collects five seconds of analog signal. Then, an algorithm is applied to create a 128 x 128 ...
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Confusing stepper reaction to increase in delayMicroseconds()
I have been following this tutorial using the same hardware, TB6600 driver, 42HS48-1704A (yes I think its supposed to be 42hs40 but thats not what it says the sticker) stepper but am controlling via a ...
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Arduino Nano is performing really slowly, even though the calculations are simple and there are no delays
I'm working on a tiny ping-pong game based on Arduino Nano. Its modes are "person vs person" and "person vs computer" (the computer just tries to keep its racket at the same Y ...
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Using Internal Timer Interrupt to Read Analog Sensor
I'm having difficultly using an internal timer interrupt with my Arduino Nano to properly capture a specific value from a linear potentiometer and then instantly stopping the actuator.
I basically ...
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Addressable LEDs using SM16704
I've been asked to interface with some LED strips that use SM16704 pixel chips.
A site search here doesn't show any mentions of this chip, so I wonder if anyone knows if they're compatible with the ...
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GPS speedometer with NEO 6M - latency issue
I have built a speedometer, based on this
youtube video: https://www.youtube.com/watch?v=gKuJxjxNP-k&t=34s
The speedometer is for a car, so it needs to be in real-time and accurate, with the ...
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1
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DS18B20 doesn't work reliably
like discribed in the title my temperature sensor goes to -127 after a few minutes of run time, it works again after a restart, I have already replaced the sensor and I'm using the same code for the ...
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Having trouble uploading sketch to Nano [duplicate]
I have a few cheap Nano clones that I bought online that have worked for the past couple of months. They were working fine today until suddenly the Arduino IDE had trouble uploading sketches to them.
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LoRa Ra-02 Module begin and beginPacket not working in Arduino Nano
Here there, recently I am testing Lora Ra-02 module I saw many videos and it is easy to set up, according to this schematic:
LoRa SX1278 Module-----Arduino Nano Board
3.3V-------
Gnd---------Gnd
En/...
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Arduino Servo MG90S not moving
I'm new with arduino (nano). I am having problems with Servo MG90S, I cant make it move. Im doing the easiest test, Servo cables connected:
Brown -> gnd
Red -> 5v
Orange -> pin 9
my arduino ...
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Arduino Nano uploading problems
I am having trouble uploading code to my Arduino Nano. It has been very trusty in the past, but I am getting this new error when uploading any code to it:
avrdude: ser_open(): can't set com-state for &...
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Watchdog don't work with Atmega328PB
I have a code that is working fine using WatchDog timer to auto reset in case something goes wrong, but now i got a arduino with ATMega328PB, and the old code just don't active the watchdog.
#include &...
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Arduino NANO RF reciever and Digispark Attiny 85 transmitter issues
I am trying to send RF signal from Digispark Attiny 85 (this one) and receive the signal with Arduino NANO V3.0 ATmega328 (this one). Transmitter and receiver are STX882 and SRX882 (these). Library ...
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Which temperature sensor is accurate?
I have an Arduino Nano RP2040 Connect with two temperature sensors. A DHT22 is connected to D2 and pulled up with a 5 kΩ resistor to 5V, and a LSM6DSOX IMU is built in to the board. Here's my code:
#...
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1
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arduino nano fried (TWICE!!)
Having the skill to be stupid has managed to fry not one but 2 Arduino nano boards in the same place (I think it is because this part that smoke came out from of has a lump on it that was not there ...
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How can I get the Arduino IDE v0021 running on Windows XP to communicate with the latest Nano v3.0
After reading another post
CH340 Nano avrdude: stk500_getsync() not in sync resp=0xa4
I have discovered that the bootloader on current Nano v3.0 has been upgraded. However, the advice given to ...
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Need help individually controlling 3 LEDs with 3 toggle switches
I'm trying to individually control 3 LEDs with 3 toggle switches. This is the code I'm using
#define LED_PIN1 2
#define BUTTON_PIN1 14
#define LED_PIN2 3
#define BUTTON_PIN2 15
#define LED_PIN3 4
#...
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NRF24L01 PA+LNA With Arduino
I am using the NRF module for remote communucation.I have been many research about nrf but my nrf module is not working This is my tranmistter code:
#include <SPI.h>
#include <nRF24L01.h>
#...
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Problem with reading data from ELM327
The idea was to create a bluetooth device on the arduino to read data from the machine (ELM327 v2.1) using the HC-05 bluetooth module.
In this code the bluetooth module is switched to MASTER mode and ...
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Why does a simple LED Blink not work using mbed.h PWM and Arduino Nano BLE?
I have set up a very simple test program to blink an builtin LED using PWM. Following the mbed example and setting the period to 4 seconds (0.25 Hz) and duty cycle to 0.5, the expected behaviour is ...
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Can I use regular pins (Example: D2, A3, etc...) as serial (RX, TX)?
Python/Arduino Beginner here...
I have a DFplayer I am trying to hook to my Arduino and I want to hook it up through the regular pins instead of the RX and TX pins, but I've not been able to find ...
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Making a servo work for just once after a specific time period without hindering the sensors that are reading the data in a loop
I am making a cansat which will be launched on a sugar rocket. The cansat's Arduino nano will be operating sensors which will read the data and store it in an sd card and also a servo to deploy the ...
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converting comma delimited Serial message to 7 Unsigned Long variables
Working on a project where I get an input where its a comma delimited string like:
"255,10000000,42949672950254,12,22".
and then the numbers (no commas), would be split into 6 Long ...
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MPU6050 when searching is at address 0x68 but as a result shows only "0"
My circuit uses an Arduino Nano which I communicate via Α4 and A5 via I2C. There are several BMP280, HMC5883 and MPU6050 sensors on the I2C line. While I was dealing with these other two sensors, my ...
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Arduino sketch doesn't work when uploaded to arduino nano and OLED display shows npothing (possible issue: lack of memory)
I need some hand here. I wrote some code for a small arduino console-like device that has five pushbuttons, 128x64 I2C OLED display and arduino nano. And it doesn't work when uploaded to arduino nano -...
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try to send AT commands from Arduino nano to ESP01
I encountered an issue when I try to send AT commands from Arduino nano to ESP01 I tried to find any tutorial for more helps, but I find nothing. please someone can help me.
I tried the tutorial from ...
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How to pass AT commands to Lora from ESP32 UART?
I have connected "Reyax RYLR998" Lora module to ESP32 UART2, but AT commands passed through Hardware serial not working.
#define RXD2 16
#define TXD2 17
void setup()
{
Serial.begin(...
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Bad readings from 12V pwm fan tachometer signal
I have the following circuit:
(The Arduino is powered via the USB)
The problem is that I the reading from the fan's tachometer signal are incorrect,
I tried to add the two resistors as voltage ...
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Problem using CH340 driver for Nano
I am at my wits end and hope somebody here can provide some much-needed guidance.
My platform is an Asus ROG AMD laptop running Windows 11.
I recently decided to try working with Arduinos and ...
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MacOS Ventura freezes/crashes when i plug in my Arduino Nano Clone
I'm using a MacBook Pro 2013 Late with OpenCore Patcher. Currently Ventura 13.3.1 is installed. Before this version was installed, I had no problem using arduino on my MacOS computer. But right now, ...
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Troubleshoot/Diagnose Arduino circuit
I've built the attached circuit with the following changes:
I used Arduino Nano
I used 10K pot
12V is connected to VIN pin (instead of RAW)
the Arduino was connected to the PC by USB for the use of ...
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Arduino Nano 33 BLE power consumption optimization
I am working on building a sensor using Arduino Nano 33 BLE that will measure temperature using two thermistors and angle changes. The measured values will be transmitted over Bluetooth to a ...
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How to show repeated result on LCD while button is pressing
my results are here.
0 press--"a"
1st press--"b"
2nd press--"c"
3rd press-- still showing "c"
When button pressed 3rd time, It must be repeated to show "a&...
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What do I need for a plug?
I've manage to build myself an RFID music player which I'm pretty chuffed with. It's definitely a bit home made but it woks and I'm proud of it. I don't know what plug type to buy to sort my problem ...
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Arduino Nano not receiving MIDI messages
so I am currently creating a MIDI to CV module and am still having trouble with my MIDI input circuit. I am following this circuit as my guideline and am sending MIDI messages via MIDI interface with ...
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Arduino Nano not recieving MIDI Message
I'm building an MIDI to CV converter using an Arduino nano along with a MIDI input circuit, however, when uploading the code and connecting the MIDI to a laptop via USB, the Arduino doesn't recognize ...
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1
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50% duty cycle PWM signal with calculated frequency
#include <PWM.h>
int led = 9;
void setup()
{
InitTimersSafe();
Serial.begin(115200);
Serial.println();
variable_freq();
pinMode(A0,INPUT);
}
void variable_freq()
{
while(true)
{
...
1
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0
answers
131
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How to query data from my ELM327 via BLE?
I have a HM-10 module connected to my Arduino Nano that I want to use to get data from a ELM327 OBDII.
I have been able to successfully connect to the ELM327 via:
AT
AT+RESET
AT+BAUD2
AT+ROLE1
AT+...
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