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.

232 questions with no upvoted or accepted answers
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549 views

Arduino nano clone problem with interrupt on falling edge on pin 2

I've s 1Hz square wave coming from a DS1307 SQW/OUT pin going into pin2 on the Nano that is set up as input with internal pullup enabled. I've set up the interrupt on falling edge but I can't get the ...
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2answers
251 views

I2C - Confusion

It's not often I ask a question. This one has me a little stumped though. Scenario: I have an 328PB (internal 8mhz), it speaks to a multiplexer on Wire1 (the PB's second IC2 - Minicore lib). The ...
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0answers
92 views

HC-05 and cheap Nano clone not powering on

I have a HC-05 module which works absolutely fine with an Arduino Uno. Because I need to reduce the size of it, I tried using an Arduino Nano. After correctly wiring it up to the Nano, sometimes the ...
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0answers
82 views

Can't reprogram Arduino on protoboard (perfboard), but could program the same circuit on breadboard

So I have a circuit that works well when it's on a breadboard and without removing any pins I'm able to upload sketches, but for some reason when I transition it to a protoboard I can no longer upload ...
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0answers
609 views

Arduino nano stk500_getsync() attempt 1 of 10: not in sync: resp=0xe1

I have been building a project using an arduino nano clone. It uses the CH340 chip. It worked perfectly, and a week later it now doesnt. When I want to upload code in arduino IDE I get the error ...
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0answers
137 views

Combining mysensors with SD card (on an Ethernet Shield v2)

I'm trying to combine a MySensors network with the usage of a SD card. Currently I'm working with the SD card reader on the EthernetShield v2. The NRF24L01+ chip I'm using is also using SPI but we ...
2
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0answers
1k views

Arduino GY273 HMC5883L Constant Value

I have a GY-273 which has HMC5883L chip (I guess). I am trying to get data. I find a few codes and library (I don't have enough information about HMC5883L) but always all serial port screen there are ...
2
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0answers
5k views

Can upload programs to ESP8266 with Arduino Nano but not run them

I am trying to use my Arduino Nano to program my Generic ESP-01 Module. I want to use the module to control an RGB LED Light Strip but am not having much success, only errors.... These are my ...
2
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0answers
882 views

Manchester 433MHz Nano to ATTiny85

My transmitter is a Nano, the receiver is a Tiny85. I use a Logic Analyzer to check if stuff is moving, I can clearly see data coming in at the receiver. The receiver does not 'decode' the data, man....
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0answers
9k views

UART from Arduino to NodeMCU

I'm trying to connect an Arduino nano to a NodeMCU 1.0 via the hardware UART, in order to send information one way from the Arduino to the NodeMCU (and from there to the network). I'm connecting the ...
2
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0answers
415 views

Can't reprogram atmega328p chips using nano as ISP

Using nano clone as an ISP on a breadboard- as shown here - http://www.martyncurrey.com/arduino-nano-as-an-isp-programmer/ Previously, it worked great. However, recently, chips that I have ...
2
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1answer
556 views

Arduino Nano USB Serial Bypass

I have a Nano clone here, that sporadically fails to get detected by my banana pi. This is annoying, because it works for days and hours, but fails to work randomly. The Nano gets it's own power via ...
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0answers
21 views

Arduino MEGA 2560 board doesn't transmit RF signal

I tried to test RF communication using nRF24L01 with 2 Arduino boards ( between Arduino Nano and Arduino mega). Codes are working fine (They are very simple codes). When I set Arduino nano as the ...
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0answers
21 views

Fail to upload sketch when Arduino Nano is connected to breakout board

When I upload a sketch from Arduino IDE to my Arduino Nano (not yet connected to breakout board) via USB, it works. I can then plug the Nano back to the breakout board and let it do its thing. However,...
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0answers
22 views

Receiving half the value of Reference Voltage in AD7705?

I have a doubt in the AD7705 library AD7705 Library Link when I am declaring a reference voltage of 5 V and giving a reference voltage of 5 V to IN1+. On the serial monitor, I can see ADC conversion ...
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1answer
40 views

Real Time clock module error-DS3231

This is not a code error I have been using DS3231 RTC module with battery. When I bought this module It worked perfectly now when I get it to use, The time is running perfectly. when I set the current ...
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0answers
18 views

How to use a non-adafruit BMP280 sensor for continuous data outflow

please I need help with the arduino BMP280 breakout board I got from AliExpress. I’m pretty new to the arduino world, I need it for my rocket datalogger, I downloaded the adafruit BMP280 library but ...
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0answers
18 views

Dual Channel Reading with 16 bit AD7705(SPI)

I want to read 2 separate voltage readings by AD7705 ADC and send the data to Arduino(Master). What is the correct program flow should I implement to get dual-channel operation working. How data will ...
1
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1answer
51 views

Arduino Nano and 0.96 i2c oled screen not working

When I try to scan the i2c address it stays stuck on "i2c Address Scanner" which is the first line of the code. My screen is connected with VCC-5V, GND-GND, SCL- 4.7K resistor->A5, SDA- 4....
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2answers
55 views

Failed to boot VL53L0X: VL53L0X Error: -6

I am using a VL53L0X sensor in my project. It was working fine when suddenly it started to show failed to boot error. I tried debugging but of no use. I ran I2C scanner sketch and it detected the ...
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0answers
36 views

Is it possible to connect Longan Nano with WS2815 LED stripde?

I have a very interesting interface card - Longan Nano and a LED stripe WS2815 (12V). As far as I understand, I need to connect to DI pin of the LED stripe some pin from SPI output of the card. As the ...
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0answers
21 views

Ardunio wireless voice transmission

I made a project based on calling with gsm module and arduino and now i want to transmit to voice wirelessly to my bluetooth earphone which module should i use for this purpose.
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0answers
26 views

NRF24 receiving data while turned off

The code to set up the nrf24 is from Electronoobs. The further if-clauses are suposed the drive a motor. The problem I am facing is, that if ther is no data transmission (emitter turend off; or ...
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0answers
23 views

RFID-RC522 not working properly?

So I'm working with an arduino uno and I want to read the UID from one card and write it to another with the code of Miguel Balboa but the RC522 doesn't appear to read anything on the serial monitor. ...
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0answers
54 views

Why isn't my Arduino Nano Every recognized as a Nano Every and why won't it upload sketch?

I have a genuine Arduino Nano Every board that isn't showing up quite right. I actually have 2 hooked up to the computer on different ports and one of them, when I click on 'Port' shows as: COM12 (...
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1answer
44 views

Arduino Nano IoT 33 Char Array size constraints

I would like to save data that I am receiving from API calls in a char array. The problem is the data is around 80KB however my Arduino IoT 33 has 32KB of memory. It will save data in a char array ...
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1answer
31 views

How to load scal factor external to the code?

We know that, we need calibration factors (scale factors) to read current sensor data (ACS758) to arduino. I am also using voltage reader using voltage divider circuit for my project. I need to build ...
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1answer
62 views

Why does the LEDs affect Analog Input?

So I'm working for a project to control RGB Led Strip using microphone or sound sensor with Arduino Nano. I'm using 5050 RGB Led Strip around 120 LEDs, and I control them using simple transistor ...
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2answers
118 views

Wireless Bluetooth USB HUB using Arduino nano

I have the following problem/idea: I have a electronics workbench and a separate PC desk. Now I have a USB HUB on the workbench, but it doesn't properly work, because the USB-cable to the pc is too ...
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0answers
161 views

Error compiling for board Arduino Nano 33 BLE

I am trying to use pulse sensor with Arduino Nano 33 BLE sense, but when I verify it, it shows Error compiling for board Arduino Nano 33 BLE. The code is from the pulse sensor website. The code works ...
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0answers
221 views

Arduino Bluetooth upload problem HC-05 v4.0

I upload code into arduino nano using a self-made PCB with bluetooth using this method. I was initially using Arduino Nano (chinese Clone, the one with CH340G) and Bluetooth module HC-05 (version 3.0) ...
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1answer
69 views

How can I read this digital pin for Nano by using AVR's Atmel Studo?

How can I read digital pin 6 in AVR? I set the pin as input as follows: DDRD = B0100000; //this will set pin 6 as input But how can I now digital read this pin?: Another way of putting it: how can ...
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0answers
77 views

Problem burning bootloader to ATmega chip using nano/uno

I designed a custom PCB that has the chip, an oscillatorm, decoupling capacitors, and all other connections for the ATmega along with the rest of my circuit. I followed all steps in the tutorial for ...
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0answers
183 views

ESP32 HCI command for setting BLE TX Power

Does anyone know if there's an HCI command for setting the TX and the advertising power for BLE on an ESP32? I have a Nano 33 IoT and a MKR 1010, and it has its power set annoyingly low for ...
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1answer
405 views

Arduino random LED on

I have a project which has two options No. 1 Randomly turn on one LED from a group of 6 LED (Relay Board) No.2 randomly turn on one LED from a group of 2 LED (Relay Board) The selection of the ...
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1answer
140 views

led chaser fill color effect

Please help. I am learning a lot about Arduino. Most all in lightning. I am a newbie. I play with nano and LED ws2812 and use fastled library. What ask is to make effect like fill effect. For ...
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0answers
59 views

Arduino Nano drivers

I got a Arduino Uno awhile ago and it took me awhile to set up but it worked when I downloaded the IDE. This time when I bought an Arduino Nano it doesn't pop up with the driver. Doesn't show up ...
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0answers
45 views

RTC 1307 when connected to a relay via Arduino Nano

I was posting a question but to be completely sure i did some more tweaking in the code and solved at least functionally my problem. I decided to post it anyway to have suggestions for a better ...
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0answers
80 views

ARDUINO PROGRAM

I have a project that consists in measuring the mass of an object with a strain gauge HX711. so I found an interesting Arduino program and the editing that goes with it. but I have a problem, I ...
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0answers
423 views

Basic communication with nrf24l01 between nodemcu and arduino nano

I spent the last two days to find a way to set up a basic communication between a nodemcu amica and an arduino nano with a nrf24l01 module; all of this without success.. Here the code uploaded on my ...
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0answers
71 views

Resistance measurement using loop resistance technique

Im trying do a circuit to measure resistance between Neutral and ground, for this I tried ohm law method i.e., to obtain R = (V/I). Voltage is known value 25 Vac, Current value is measured using ...
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0answers
70 views

Arduino UNO R3 clone acting as Arduino Nano

I just got a bunch of Arduino Uno R3 (ATmega328P + CH340).In arduino IDE when i'm selecting board as Arduino UNO then i'am getting this error avrdude: Version 6.3-20171130 Copyright (c) 2000-...
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0answers
104 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
35 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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0answers
33 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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0answers
426 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
229 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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0answers
266 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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0answers
28 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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0answers
112 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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