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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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
491 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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0answers
8k 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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0answers
387 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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1answer
469 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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1answer
34 views

How to use H3LIS331DL 3-Axis Linear Accelerometer with arduino to detect Harsh braking of vehicle

I am a newbie here, Recently I was working with H3LIS331DL 3-Axis Linear Accelerometer I²C Mini Module Here is code for the X, Y, Z-axis. #include <Wire.h> // H3LIS331DL I2C address is ...
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0answers
34 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
69 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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0answers
56 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
60 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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1answer
96 views

conflict with different i2c devices

I am trying to communicate with two i2c components using an arduino nano - some ADS1115s and some i2c flow sensors each connected to a different i2c multiplexer, but they seem to be conflicting. ...
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0answers
136 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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2answers
128 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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0answers
81 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
135 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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0answers
86 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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0answers
65 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
593 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
124 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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0answers
907 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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0answers
194 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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1answer
783 views

Powering a Nano with a 5v mini USB adaptor

I have made a simple temp sensing circuit that lights an LED when it reaches a certain point. It works perfectly when powered by a USB plugged in to the laptop but when I connect it to a 5V supply ...
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1answer
569 views

Can't move servo with my Nano

I'm new to this kind of thing. My code works on my Uno without problem with two separate servos. I've ensured that it's not any faulty leads, having tried a few other circuits with LEDs, buttons and ...
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0answers
54 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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2answers
679 views

Arduino UNO/Nano communication with SP1ML-868 module

Good evening, I'm trying to establish serial communication between an Arduino UNO/Nano (ATMega328P) and a SP1ML-868 RF radio module (http://www.st.com/en/wireless-connectivity/sp1ml.html). I can talk ...
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0answers
4k 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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0answers
787 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
810 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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0answers
2k views

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

It all started when I tried connecting an hm10-nano to a relay board 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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0answers
121 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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0answers
523 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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0answers
241 views

Arduino nano (clone) with ethernet shield only works when I open up serial monitor

#include <EtherCard.h> static byte mymac[] = { 0x7A,0x69,0x69,0x2D,0x30,0x31 }; byte Ethernet::buffer[500]; static uint32_t timer; const char website[] PROGMEM = "x0201g2.cloudapp.net"; ...
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0answers
126 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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0answers
784 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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0answers
79 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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0answers
130 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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0answers
153 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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0answers
18 views

To update GPS after every 30seconds using NeoGPS and NeoSWSerial Libray

I am using Adafruit Ulitimate Breakout GPS module and NeoGPS and NeoSWSerial Library. Now I want the GPS to update in 30seconds once (1time in 30seconds).After it is updated I want to check the ...
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0answers
16 views

Upload sketch in multiple arduinos

How do I upload sketches in multiple arduinos from one supervisor Arduino using UART , cd4051 for Rx and TX separately and reset pin low
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0answers
34 views

Arduino nano with 128x64px OLED freezing

I have an arduino nano, MCP3424 i2C ADC and a 128x64px i2C OLED display. The function is quite basic; the arduino receives information from the ADC and prints it to the screen as described in the code ...
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1answer
17 views

Sim900a AT+HTTPREAD does not get fully answer

changed the firmware on SIM900B try to send get request http://dummy.restapiexample.com/api/v1/employee/1 AT+HTTPACTION=0returned +HTTPACTION:0,200,98 but, when I try to read (AT+HTTPREAD or AT+...
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2answers
34 views

need at least 5 volts but 3.7 lithium polymer battery does not supply enough Voltage

I am building a device using an Arduino Nano, an OLED display and infrared thermometer sensor. I want to make it rechargeable so I am using a 1 cell lipo battery and a tp4056 circuit protection board, ...
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0answers
21 views

To stop the geared DC motor based on the number of rotation

I am doing a small project in which I need to stop rotating the dc geared motor based on its number of rotation (in my case I need only 2 rotation), after two rotation it should stop rotating. I am ...
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1answer
22 views

Arduino how can I search for missing library header files

How can I search for blank library header files (ie. .h files).
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17 views

Problem with connecting Infineon Pressure Sensor Shield2Go to Arduino Nano

How do I connect DPS310 pressure sensor Shield2Go with Arduino Nano?
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41 views

ethernet module works with uno, but not with nano

I use etherCard Library with ENC28J60-EDC8J60 ethernet module When plugging the "backSoon" example into an arduino UNO, everything works fine, but when i plug it into a nano, as seen in some tutorial ...
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0answers
15 views

I am not receiveing what i am sending using NRF24L01

I am trying to transmit and receive the value using NRF24L01. I am sending 5 but receiving 0. The code i am using at the receiver's end is #include <SPI.h> #include <nRF24L01.h> #include &...
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0answers
27 views

How to swap ground and power for multimeter

I'm trying to create a multimeter that measures resistance and capacitance for a school project and the code must be under 30 lines. I have made both a resistance meter and a capacitance meter but the ...
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4answers
73 views

wake from powerDown to check sensor then put back to sleep

I am using an Arduino Pro Mini with various sensors. I am powering it with 2 3.7v 3400mA batteries which I recharge with a solar panel. I take a reading from the batteries and if the reading is ...
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0answers
37 views

PIR Sensor Gives False High in 55 Minutes (Can't find a way to solve)

I have built a system to identify motions and fire alerts. System can send a SMS in case if it's identify such alerts. System consist of two parts, Part 1: Armed and Disarmed using a PIN (Using ...