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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Arduino voltage misunderstanding

For arduino nano. I set digital pins 1,2,3,4,5 to HIGH (I do this using digitalWrite(pin,HIGH) for each pin). Does this mean that 5V is being sent through each of the pins so in total there is 25V ...
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1answer
26 views

Ardiuno + sim card to receive only calls phone [closed]

I am interested in making a busy board project featuring : Receive calls using a sim card Handset to pick up and answer Click a button and receive a call from a character Where should I start? I ...
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1answer
33 views

How to properly send bytes between RPI and Arduino over I2C while using ISR without IOerrors?

I have a I2C connection between an RPI 3B+ and Arduino Nano. I want to send a key and a corresponding value byte, and the arduino does something with that inside a timed ISR. Which works. But I get ...
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0answers
21 views

Low Power, SD Card module and SCK

in order to minimise power consumption in a project using the Arduino Nano, I need to set pin D13 to HIGH after using it as SCK for transferring data to an SD card module (I use the SD.h module. I ...
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1answer
37 views

AW9523B I2C on Arduino Nano

I'm testing the AW9523B IO expander with an Arduino Nano. I can't get the device to be recognized. Using I2C scanner to find all attached I2C devices. I've connected AW9523B to the correct pins to the ...
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1answer
32 views

How do you get 2 PWM pins to inversely bitbang at 25 KHz on a Nano?

I need 2 PWM pins to oscillate at 25 KHz but they need to oscillate inverse to each other. When one is high, the other must be low and vise-versa. I want to do this with a Nano.
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2answers
97 views

Arduino Pull-Down Resistors

I'm building what I thought was a simple Arduino Nano project... right up until it caught fire! I am a long-time reader of stack exchange and I always find the answers to my questions somewhere on ...
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2answers
66 views

Can i wire leds without resistor with arduino like this?

There are 4 red leds and an arduino in the picture. Each led has forward voltage 2V. My friend says that just digitalWrite(9,HIGH) and the leds will light without resistor and won't be burnt. Is this ...
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1answer
48 views

5V adressable led strip

im planning on using an around 17M adressable led strip controlled by arduino, and plan on putting it in car, so i would be stepping down the 12/14V to 5V, basically i need to know how many amps and ...
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0answers
31 views

NRF24 and Arduino Nano Every usage

Im building an RC car project and using 2 NRF24's for communication. I own an Arduino Uno, Nano and Nano Every. The NRF's work great with the Uno and Nano in any combinations but using a Nano Every ...
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1answer
49 views

How to fade LED in a defined time using FastLED

I'm using FastLED library, Arduino Nano and 5 addressable LEDs (WS2812B). I'd like to create the sequence in the image attached. (all in white color for example) I know how to turn ON each LED every 0....
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1answer
75 views

Trying to use Nano Every as a sort of USB logic analyzer, but can't isolate it from “device under observation”

Here's the scenario: I have a radio that displays information on a 1602A LCD. The 1602A is plugged into a header so I can easily pull it out and instead plug in logic analyzer leads. The logic ...
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0answers
46 views

How to make walkie-talkie with LoRa module?

well I am trying to make a walkie-talkie with this LoRa module. I need your help recording and sending the audio. I found a tutorial from this link and using RF24Audio library. But library works with ...
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1answer
152 views

Connecting microSD reader and e-paper display to Nano at the same time?

Pretty much as the question states, I'm wondering if it's possible to connect (this: https://www.waveshare.com/7.5inch-HD-e-Paper-HAT.htm ) 7.5" e-paper display that has raspberry pi HAT and an ...
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4answers
1k views

Removing CH340g chip from Arduino Nano clone.. any issues?

In trying to figure out how to solve another problem with Arduino Nano clone using CH340 chip, I was just now wondering, would there be any issues if I were to simply remove the CH340 chip? As it ...
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1answer
25 views

Unable to get readings for “Motor with Encoder”

I've posted to the DFRobot forum, who makes the FIT0186 motors, but no one seems to be replying there. So, excuse the copy pasting. It's probably an issue with the motor/encoder, but perhaps it has ...
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1answer
39 views

Can’t send string from arduino to processing via hc05

I’m trying to send and receive data from my laptop to arduino nano via hc05 Bluetooth for a rocket flight computer. For some reasons which I don’t know, I can send data from processing software using ...
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1answer
55 views

Building a vu meter

I am building a vu meter with 2 5v neopixel rings 2 pots a headphone jack and a arduino nano will 5 volts 1 amps cut it or do I need more power FYI I'll be powering it via a DC jack once I get it ...
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1answer
25 views

Arduino Nano not recognized by Mabook Pro M1

I am new to Arduino and I have ran into an issue. When I first tried to plug the arduino nano (after market, from ebay) into my computer (Macbook pro M1), nothing happened. Then I downloaded the ...
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1answer
41 views

Can I pass data from an Arduino Nano to a Websocket Server via USB?

I have an Arduino Nano, and a local Java WebSocket server (ws://localhost:8888) run by a .jar file on my computer. I'm wondering if it's possible to send data (text, numbers etc.) from the Arduino ...
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1answer
48 views

unbrick Nano RP2040 connect using Uno

I think I have bricked my Nano RP2040. How do I unbrick using a Uno or Mega? I found instructions for using another Nano, but only have the one.
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2answers
34 views

How to hook up a HC-06 to Arduino Nano

So I have an arduino nano hooked up to hc-06 however every diagram of the hookup wires shows some kind of resistors (1K and 2K, rather high resistances to ignore), and I completely overlooked them. I ...
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1answer
53 views

Arduino NANO clone not detected by computer

I recently purchased 5 Arduino Nano clones and on my Windows PC they were all working fine. I then gave one to a friend and after installing the CH34OC driver on his Mac he was able to program a ...
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1answer
645 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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1answer
31 views

Arduino randomly stops sending data to python over serial

I want to send commands to Arduino over USB Serial from my python program and Arduino should send back received command to make sure data wasn't lost. However Arduino randomly stops sending data back. ...
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1answer
21 views

Can I re-purpose any GPIO pin to work as TX and RX in MKR1500 board

I am using a fingerprint sensor and a VESC which connects to the Arduino MKR 1500 board using TX and RX pins. Is there a way that I could re-purpose any other GPIO pins to behave the same?
2
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1answer
155 views

Trouble obtaining values from Nextion screen to Arduino

Currently I have a setup running an Arduino BME 280 sensor and a 4.3" Nextion screen. What my program does is sent all the calculated values from the BME to numbers and progress bars in my ...
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0answers
29 views

Arduino integration with VESC issue

I am trying to integrate the vesc with arduino and I am running a simple code to print the voltage and other data into the serial monitor. Below is the code for reference. When I chekc the output, it ...
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1answer
4k 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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1answer
62 views

Sending Data Between Arduino Nano and D1 Mini

I am sending data from Arduino Nano to D1 Mini, Transmitter is Arduino Nano Transmitter Code: #include <DES.h> #include <SoftwareSerial.h> SoftwareSerial link(2, 3); // Rx, Tx DES des; ...
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1answer
40 views

Pass Byte Array to Char and Send to a Separate Arduino

I am trying to send data between Arduino Nano and D1 Mini (ESP 8266 Module) My Code as below in Nano which will be the transmeting , #include <DES.h> #include <SoftwareSerial.h> ...
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2answers
51 views

Arduino Serial Monitor Input 3DES Encryption

I am trying to 3DES encryption using Serial Read, Found this 3DES Sample code in Github, #include <DES.h> DES des; void setup() { Serial.begin(9600); Serial.println("Hello!"); } ...
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2answers
4k 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
24 views

5v pin not outputting any voltage in Arduino Nano ble 33

I bought an Arduino Nano ble 33 but when I try to power my MQ-4 and MQ-8 sensors, these don't turn on at all, they do turn on if I switch to the 3.3V tho. Is there anything special that I need to do ...
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0answers
20 views

MQ-4 Sensor working fine with Beetle Bluno BLE but not with Arduino Nano 33 BLE

I have an MQ-4 sensor connected to a Beetle Bluno BLE that seems to work fine, however, when I change the board to an Arduino Nano 33 BLE, the sensor doesn't seem to work well (I get an arbitrary ...
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1answer
48 views

How to sue Arduino Nano to control Stepper motor with Firmata

I have a stepper motor and at present it is controlled by a sketch all working fine. I need now to add it to a Win32 app to control it in circuit with existing Servo Motor. The servo Motor is working ...
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2answers
83 views

Everything is ready for project . I have one doubt! I am using transmitter + Arduino *Uno*..and receiver + arduino *nano* will it work?

Everything is ready for project except hardware! I have one doubt! I am planning to use transmitter of Arduino Uno and receiver of Arduino Nano. Will it work? Both Uno and Nano obey for same ...
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1answer
96 views

Trying a crude water level sensor

first of all, Im from Cuba, that means I may have some problems to find parts... I have a little system to measure the water level in my house water tank. The system is pretty rough: a proximity ...
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1answer
30 views

HG-C 1100 measurement sensor

I am using two HG-C 1100 measurement sensor for measuring the width of the metal. In the top of the sensor I will be having the measurement value. The sensor is capable of measuring the dimensions ...
2
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1answer
279 views

Can’t set duty cycle to 0% with custom PWM

I'm trying to control a heating element with PWM with an Arduino Nano, but the problem is even if I set the duty cycle to 0 it gives a tiny spike. I want to generate a square wave of 1Hz and that's ...
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0answers
38 views

Motor response is lagging

I've got a DC motor connected to an Arduino Nano, L298N H-Bridge and a 12v Power supply. I'm trying to make it respond to incoming MIDI data a bit quicker. Right now, it seems awfully slow, and lags ...
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0answers
35 views

Arduino MPU error

This is my code - // Basic demo for accelerometer readings from Adafruit MPU6050 #include <Adafruit_MPU6050.h> #include <Adafruit_Sensor.h> #include <Wire.h> Adafruit_MPU6050 mpu; ...
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1answer
23 views

Touch Sensor and Potentiometer - Need some help

I'm using an Arduino Nano with a capacitive touch sensor and a potentiometer. I'm trying to get my code to differentiate between three different program states. One is when my touch sensor is NOT ...
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0answers
33 views

8 Touch Screen Displays with single custom Microcontroller Board [closed]

I want to build a project like this but with touch screens. So that I can drag the moving text all across different touch screens from one to another. I want to know what would be your approach to ...
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2answers
35 views

Invalid use of void expression (how to use function pointer with input)

I'm defining an attachinterrupt and I'm running into an error. The line in question is: void setup() { attachInterrupt(digitalPinToInterrupt(stallsense1), changedirection(1), RISING); ...
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0answers
31 views

Mesure sensor voltage by 328p and OP Amp in parallel

I am designing a circuit to measure the temperature via a thermistor via the ADC pin on a 328p and I am looking for some advice. As a failover I am also using an OP Amp as a comparator, to see whether ...
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0answers
20 views

Arduino Nano. Max30102 and memory problems

We are making a simple pulse oximeter device with nano and max30102 sensor. The problem is the spo2 reading and processing algorithm of the max library litterally does signal processing on arduino ...
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1answer
35 views

How to add colour change to the strobe coding?

I have this strobe effect working. However, I would like to change the colour of the LEDs after each 'strobe sequence'. How can it be achieved? The code I am using is this one: // Basic code ...
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1answer
36 views

Custom 328P-AU board not responding via ICSP

I created a custom PCB based on a 328P. The design is mainly based on the Arduino Nano schematic (3.0). The boards have arrived some days ago, and I can't get avrdude to recognize them via USBASP (or ...
3
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1answer
103 views

Anyone know why my pushbutton is always returning HIGH?

Been trying to figure this out for a couple hours, despite how ridiculously simple it should be. I have no idea why it's always returning 1, even when i'm pushing the button. Fritzing sketch: My code:...

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