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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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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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102 views

Two pots controlling 2 servos — odd behavior

I'm trying to control 2 servos with 2 pots. I thought I could just amend the tutorial code by adding in the extra pot on a1 and extra servo on d8 (am using a Nano). #include <Servo.h> Servo ...
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1answer
70 views

Is it correct to use a 9V 1A transformer to power my project?

I have a quick question: I have a small alarm project running on an ArduinoNanoV3 (a chinese clon). Counting sensors, actuators and the arduino itself the consumed current (theoretically speaking, ...
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329 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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329 views

How to connect/call to the PSTN network using Arduino?

For a few months I made an alarm for my house, it is very simple: it is based on magnetic sensors DC-1561 (for windows and exterior doors), a few PIR sensors for rooms, buttons, LEDs and (of course) ...
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1answer
655 views

Dim a led using a NPN transistor

I know there are a lot of questions about this topic, but I've tried everything and any possible guide online without success. I want dim (increase and decrease the brightness) some leds (3.5 Watt ...
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102 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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68 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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1answer
51 views

Communication between 2 Bluetooth modules

I successfully connected two Bluetooth modules, HC-05 and HC-06 like on this website: http://www.martyncurrey.com/connecting-2-arduinos-by-bluetooth-using-a-hc-05-and-a-hc-06-pair-bind-and-link/ I ...
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3answers
1k views

How to receive more than 64 bytes on Arduino?

I am receiving about 90 bytes on the serial port. But Arduino has a serial buffer of 64 bytes only. Because of this limitation I am unable to receive further bytes. char c; void read_response() { ...
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1answer
123 views

4WD rover not moving

I am trying to make a 4WD vehicle. I have uploaded the code, all connections are OK and I have used L298N and HC-05. But when running the Bluetooth app, the motors do not rotate. I tried with both an ...
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150 views

Get UUID from Arduino Nano, ATmega328 [duplicate]

I need to know how to obtain the UUID from an Arduino Nano ATmega328 for a project.
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426 views

A4988 and capacitors [closed]

I’m working at a project which involves 3 stepper motors that are driven by A4988 drivers. I have read that I have to connect an 100uf capacitor in parallel with the motor power supply that goes to ...
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2answers
208 views

Arduino + nRF24L01 + ESP8266 mod

I was wondering if it is possible to connecting two Arduino boards with each other (Uno + Nano) using an ESP8266 mod on one of them and an nRF24L01 on the other board? I have seen lots of details of ...
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1answer
379 views

ToF VL53L1X sensor integrate with arduino

I have this latest version VL53L1X time of flight laser distance sensor: http://www.st.com/en/imaging-and-photonics-solutions/vl53l1x.html I study about this sensor, It says that sensor only Access ...
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1answer
501 views

How to write Arduino API code in VL53L1X?

I'm trying write code for the VL53L1X on Arduino, but I didn't get the VL53L1X registers. How to access them and how to measure the data in VL53L1X? Can anyone help me?
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70 views

Linking Mulitiple Arduino's

I have a project in which several Arduinos will be running independent programs. I would like to use an Arduino Mega as the main controller. It will receive input from a variety of switches, as well ...
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1answer
673 views

Two batteries sharing ground?

I need to power my arduino and 2 DC motors requiring 6V each, I want to power the DC motors with a 6V battery through the vM pin on an h-bridge and use a 9V battery to power the Arduino itself. On my ...
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1answer
34 views

character on 16X2 LCD is not visible properly

i am using 16x2 LCD with arduino nano for my project. when i connect arduino nano with usb power supply from pc or any mobile changer adapter then all the character on LCD is visible properly. But ...
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210 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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1answer
189 views

Arduino memory issue with old HP HDSP-2000 display chips

I'm running into memory issues with an Arduino Nano driving some old HDSP-2000/HDSP-2011 chips. I cannot seem to get the ASCII 5x7 array into PROGMEM and have it read properly. It's so low on memory ...
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1answer
2k views

MIFARE RC522 I2C Library

I was looking at this link on RFID I2C interface. I added the library to arduino, but in main.cpp, I see an error: In function 'void setup()': sketch_mar27a:16: error: no matching function for ...
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144 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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2answers
499 views

How to use digital pin as ground?

I have recently brought an arduino nano. It has only two ground pins but I needed three for my project. Is there a way to use a digital or analog pin as ground pin? Please show me how to do it
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2answers
1k views

6 wire 3 digits 7 segment display and arduino question

Here's a brain teaser for you: I have the following 3 digit 7 segment display that has only 6 wires Experimentally I found out how it works, even though I don't understand it, but anyways every ...
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1answer
178 views

Code compatibility with Arduino Due

I am currently working on a quadcopter project that involves an MPU6050 accelerometer+gyroscope module, an ultrasonic sensor and control of electronic speed controllers. I have used existing examples ...
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1answer
481 views

Powering 8-channel relay correctly

Replication Steps: 595N shift register powered by arduino Each output on register connected to 1 of 8 relays in relay board Arduino programmed to loop over each 8, triggering 1 relay at a time ...
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1answer
768 views

Is there a way to send data from Tensorflow to Arduino via Bluetooth?

I am not sure if such a question is accepted here. If not please direct me to a more suitable Exchange. I am planning a small project involving Machine Learning using TensorFlow and Python, which ...
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24 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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1answer
40 views

Steppers only vibrate, not rotate with I2C

The goal of my project is to be able to control two steppers with 4 buttons. Steppers are connected to Adafruit Motor shield(the older one) which is stacked on Arduino UNO, buttons are connected to ...
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2answers
1k views

How to measure the supply voltage of Arduino without using an analog pin

I'm using Arduino Nano to measure temperature with a 10 kohm thermistor and a voltage divider. My problem is I'm getting only 4.2V on the 5V pin. The power is supplied via a USB cable from a desktop ...
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2answers
608 views

Using SD shield for extra external memory?

I am an Arduino beginner and I am planning to make a musical instrument with it. I want to add record and playback functionalities into the instrument. I figure I will have to store lots of data to ...
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81 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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1answer
57 views

powering arduino with a voltage divider to increase lifespan

I have a chinese arduino nano that I'm planning to use to open a door using a numeric keypad. My power source is 12V and I want it running 24/7. I have read that the first thing to fail on an arduino ...
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1answer
835 views

What is a safe way to power arduino nano with 7.4V Lipo battery?

I'm trying to power Arduino Nano with 7.4V LiPo battery and use it to run 2 DC motor using L293D. I have figured out how power it with the connection just like in the figure below(the diagram uses Uno ...
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2answers
386 views

Attiny85 not able to understand data from 433Mhz using VirtualWire.h

The basic plan is to have a Attiny85 pass information from a 433Mhz RF module to another chip/Arduino via I2C using VirtualWire and Wire libraries. I have been able to make this system work on their ...
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1answer
446 views

Arduino Nano joystick x2 / potentiometer

will i be able to connect up all these parts to an arduino Nano i noticed i will need to connect to the nanos v5 to the 2 joysticks and potentiometer slider if i share the voltage will it still ...
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1answer
57 views

File include error while using Arduino Nano

I am using the code below to interface the Arduino nano and android cell phone to enable serial communication through the USB port. I downloaded the filter library from GitHub https://github.com/...
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1answer
138 views

What is best way to get data from sensors if arduino is slave?

Im working on a project where i have motor controller(arduino nano) being i2c slave. Its job is to get RF24 data and control motor and at same time send data to master about motor... Currently i have ...
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2answers
44 views

arduino didn't working properly

arduino didn't working properly. When i using a alarm program on pin 6 and a blinking led on pin 2 alarm sound beeps once and then goes down but when using only alarm program it works perfectly. I see ...
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52 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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1answer
61 views

what is welding plate?

I was looking at arduino nano boards here. Description says the arduino board is without welding plate. What does it mean for the user? If I buy this product will there be any issue? I understand that ...
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2answers
103 views

Getting error 32 in multi-master I2C sketch with library https://github.com/rambo/I2C

I am developing a multi-master scenario sketch with the https://github.com/rambo/I2C library, because this library will handle multi-master data collisions. I created a setup with two Arduino nano's ...
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2answers
368 views

Controlling multiple fans using arduino uno

I'm kind of new on the field of Arduino. Although I have a question concerning multiple fan connection on 1 arduino PWM pin. The goal is to connect around 8 to 16 fans on 1 arduino pwm header pin and ...
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1answer
87 views

Charge 14500 LiFePO4 lithium batteries from an Arduino Nano

I've recently started tinkering with Arduino, and I'm attempting to build a little 2WD robot based on an Arduino Nano. I was thinking of powering the robot using two 14500 LiFePO4 batteries, which I ...
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30 views

Can the “Arduino Create” chrome extension be used to program an arduino nano clone?

I was wondering if the Arduino Create app for the chrome browser can be used to program an atmega328 based arduino nano clone.(I need that app so that the arduino can be programmed using a chromebook)....
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483 views

I can't receive data from HC-05 on android

I would like to send ad8232 sensor data to android. The sensor data appears on the serial monitor however it doesn't appear in bluetooth terminal applications on android. Here's the code : #include &...
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2answers
137 views

Why my loop stop working

i have an arduino, an RTC (time), a DHT (humidity and temp sensor), oled screen (128x32 ; microoled 1306) and 4 relais ; all seems to work perfectly for hours, but sometime (1 or 2 per day..) ...
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1answer
437 views

Problem with SPI comms using NodeMCU v 3, Nano and SD

Recently I bought a NodeMCU 8266 v 3 (Lolin) and it works fine. I set up a Catalex SD card module (with a built-in 5-3.3V regulator) and all was good. Then I set the Lolin with an Arduino Uno and or a ...
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145 views

MPU9250 library exposing raw values

I'm looking for a library which would allow me to read the MPU9250 data without having to deal with float. So far, I have found 3 libraries: FaBo_202_9Axis_MPU9250 MPU9250_asukiaaa SparkFun_MPU-...