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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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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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7k 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 ...
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311 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 ...
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51 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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59 views

Why does I2C On Nano Fail with LiquidCrystal_I2C library unless Nano runs at 8Mhz?

I have an Arduino Nano (running by default at 16Mhz). I am connecting a 20x4 LCD screen via I2C (using A4 for SDA and A5 for SCL). Here's the very simple code (which was previously only showing black ...
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80 views

Serial to wifi using arduino nano and esp8266

I am trying to configure ESP8266 from Arduino Nano through software serial, after this I am sending some data through esp8266 to a PC (server). And I am lighting 3 leds, led #1 for AT ok, #2 for ...
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51 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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532 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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96 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 ...
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463 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 ...
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129 views

ESP8266-01 system param error

I'm using esp8266-01 connected to arduino nano. Every time I tried to upload code to the esp8266 chip I get this error in the serial monitor: system param error 56 45 52 31 00 00 00 00 ff ff ff ...
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46 views

Ultrasonic Sensor returns com3 false

Im a very beginner with Arduino. Recently started with the blink code. Thats my only experience with these. Ive got an ultrasonic sensor (As in this tutorial http://howtomechatronics.com/tutorials/...
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2k 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 ...
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641 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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599 views

How do you debug SPI connected devices?

EDIT: Changed the title to better express what I'm after. I've been dabbling in connecting two Arduino Nano 3's with the RFM69HCW breakout for the past 5 days.. but got nowhere. I've followed the ...
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1k views

Sending data from Arduino w/HM10 to relay board with hm12

It all started when I tried connecting an hm10-nano to a relayboard which is bluetooth enabled. Here is my nano with the hm10 module: And here is the relay board's bt module, which looks like an ...
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71 views

Redbear BLE v4.1 - Daisy Chains?

Has anyone in SE land tried daisy chaining BLE v4.1 or v4.2 devices? I'm embarking on my next project and would like to try daisy chaining BLE devices. The only device I've found is the RedBear Nano:...
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108 views

How can I read also the temperature with this GSR sensor?

Considering the GSR is the inverse of the Resistance, if I know the resistance and how much it increases for every celsius degree, the game would be done. Here's how my code looks like at the moment: ...
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405 views

Arduino Nano - 5V pin drops to 3.3V when load is connected

I have a Nano (with ATmega328) board that I am using along with a GPS module, an LCD and a potentiometer to make a small GPS unit that will tell the location. Long story short, when powered externally ...
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113 views

What is the Arduino Nano maximum wattage?

Hello, I am currently working on a DIY project and I would like to know the Maximum Wattage of a Arduino Nano with a ATmega328 processor. If anyone know what it is it would be a great help. Ricky
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703 views

Arduino PWM LED blinking on four pins, each pin's intensity and time period based on the previous pin

I am trying to make four LEDs glow using my Arduino, based on some relationship between them in terms of brightness and the time for which LEDs glow. For example, the relationships are: pin_3_value =...
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70 views

Arduino Nano Max Current Draw best Motors

I know that the Arduino Nano cannot source more than 40ma per pin. My question is there any type of motor or continuous rotation servo that I could use four of to make a robot without making the Nano ...
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122 views

Device manager sees my nano as FT232 USB UART not as COM port

Until yesterday I had 2 arduino nanos (atmega328, 16Mhz, 5V), and they worked fine,when I changed the cable and was able to upload code to them. Then I tried to make a breadboard arduino, but my PC (...
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152 views

Sketch not giving feedback as predicted switching from Arduino Uno to Nano

I have a sketch that works just fine on my Arduino Uno board, but somehow mess up, when I try to retrieve data from a Nano Board. I have wired a TCS230 color sensor, to get data about some colours. I ...
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28 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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33 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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39 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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26 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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48 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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41 views

Fastest communication between two arduinos wirelessly

So there are several options including radio frequency and Bluetooth but both seem slow. I need a wireless way to communicate between two arduinos. The values i need to send don’t matter i will choose ...
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99 views

Arduino & MCP2514 CAN bus

Trying to get this working, initially just to view and capture messages on the CAN bus in a Peugeot 407. Started with this: https://github.com/coryjfowler/MCP_CAN_lib/blob/master/examples/...
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36 views

Keep battery pack awake and run motor every 6 hrs

My circuit is a Nano that runs a watchdog timer code to keep it asleep and wake it every 6 hours to run a small dc motor for 5 minutes and then go back to sleep. The watchdog timer code works great ...
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13 views

EZ-Link break out issue

I keep getting this error "not in sync: resp=0x00" when I try to upload sketch to a arduino nano. I followed this tutorial https://learn.adafruit.com/introducing-bluefruit-ez-link/arduino-programming ...
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256 views

Rc-Switch Receiver Code not receiving anything

Hi so I'm Having Problems on my receiver code which uses the RC-switch.h library, The transmitter code is OK and it prints the corresponding values on the serial monitor but the receiver code doesn't ...
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29 views

Virtual Wire transmitter code

I'm Having problems on my virtual wire transmitter code. when i press one button the backward button is continuously being pressed even when im not pressing it. Here is the code // TRANSMITTER CODE #...
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83 views

Servo.h and ServoTimer2.h difference

So i'm trying to code a servo motor to turn left when a button is pressed and turn right if another button is pressed i already have a code for it on the servo.h library but it has a problem with the ...
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27 views

My arduino nano stops working after a short time with no obvious provocation

I have an arduino nano setup with a screen using the setup from the liquid crystals library "hello world" example, it works for a minute but then everything goes blank on the screen and the lights on ...
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36 views

Grounding analogue signals through ads1115

Quick question - I have some pretty expensive gas flow sensors outputting a 0-5V signal, which need at least 2.5 KOhms minimum load. Can I connect them to the Adafruit ADS1115 breakout (ADS1115 chip, ...
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45 views

Arduino button trigger coding

I am trying to write a simple coding to change the color of an RGB LED using a push button trigger. I just need the the pin output to change when the button is pressed. I would like to do this using ...
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229 views

Counting pulses of a signal between 2 pulses of another signal

I set an Arduino Nano to read the time between 2 pulses of a signal (kind of rotary encoder) to get and display an rpm value. I've done this using interrupts. Now I'd like to add a second (kind of) ...
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119 views

Waterproof ultrasonic sensor probe and arduino

I want to build myself a parking sensor using Arduino and I found on Ebay multiple solutions, but I was wondering, is it possible to make only the probe work with Arduino? Does anybody has an idea ...
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122 views

Is this Arduino NANO counterfeit?

Today i bought my second NANO(First one was made of Gravitech).I have some doubts that if it is a counterfeit product.I have noticed some points & they are as follows. 1)No "NANO" printed on the ...
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284 views

Arduino Uno R3 (with Atmega 16U2) and macOS 10.11 not working

So, i have the newest Arduino IDE (1.8.5) installed and the newest release of Arduino AVR Boards 1.6.21. My OS: macOS 10.11.6. Usually I only use Nano's china clones with an CH340 USB-Serial chip, I ...
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74 views

Using the Adafruit_PWMServoDriver within a function 'crashes' Arduino Nano

Just switched out an Arduino 101 for a Nano and having trouble since then. When the following function is called, the Nano stops responding or doing anything. void thumbMove() { //interupt the ...
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53 views

Multiplexing BMP180 pressure sensor on arduino nano

I am getting fluctuating values from the pressure sensor on using this code. without the multiplexer the reading is stable and accurate. //---------------------------------------------- // // ...
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37 views

Automatically detect and address module voltage on board on 3v board

Let's say I have the objective to simplify project assembly, for kids, perhaps. I have three requirements: Use industrial made, and readily available boards and modules. No development here. Extend ...
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182 views

Arduino-electronic voice pitch detector

I'm doing a project, which is "Electronic Voice Pitch Detector for ADHD Patients". My device for the detector can detect when there is any sound at the surrounding. And I had set the threshold value ...
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110 views

4x4 Keypad Interface issues

I have not used arduino until now. I thought of interfacing my 4x4 keypad. But when I press keys 1, 4, 7 and *, key values A, B, C and D are sent out to serial terminal respectively. All other keys ...
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20 views

Can we code XBee more than once?

How many times we can rewrite code in XBEE, can we write code more than one or once a code is written it cannot be overwritten
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60 views

Arduino not getting reset

I need some help. Is there any way to master reset Arduino? I once uploaded a code few days back, and now (next time) I can not upload a second code.'Arduino Nano' is running that same code which I ...