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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25 views

Arduino desktop on/off Switch over WiFi

I am looking to use my Arduino as a on/off switch for my desktop PC. All I need it to do is bridge to pins on the Arduino as i will be connecting it to the PC motherboard on the power pins. I'm ...
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55 views

Arduino NANO (CH340) error while flashing bootloader [duplicate]

Ok. So I'm close to tearing me hair out on this one. I have a batch of cheap Arduino Nano clones, that just straight up won't work. (I HAVE gotten one of them to work, but I suspect that was by pure ...
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39 views

Cheaper alternative to Arduino Nano 33 IoT with BLE?

The Arduino Nano 33 IoT looks great with its builtin Bluetooth chip. At ~€20 (Germany) it's pricey though and seems overkill for what I need anyway. What is a good, cheap alternative for a simple ...
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22 views

Decoding RF receiver signals

By using the following draft i decode the signals from an RF receiver #define CH1 2 #define CH2 3 #define CH3 4 #define CH4 5 #define CH5 6 #define CH6 7 int ch1Time, ch2Time, ch3Time, ch4Time, ...
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Arduino RS485 communication protocol - minimising overheads and best practice

I'm building a single master multiple slave RS485 network for remote sensors on test equipment. I have the hardware built and working, and I can do a Serial.print on the master and have the slaves ...
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50 views

Will a pull up resistor help the UART transmission accuracy on Arduino nano?

On A post from Arduino forum , someone mentioned that a pull up resistor over RX/TX pin could help the reliably of UART communication. Is that really the case for nano and uno board?
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+100

How can I set up outputs without using digitalWrite?

Consider the following: #define IN1 9 #define IN2 10 pinMode(IN1, OUTPUT); pinMode(IN2, OUTPUT); void LeftMotor(Direction direction) { digitalWrite(IN1, direction == Forward ? LOW : HIGH); ...
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What killed my Arduino nano?

Yesterday evening everything worked well. Today morning I am trying to upload sketch to the Arduino (nano china, CH340) and get the following: Writing | avrdude: stk500_paged_write(): (a) protocol ...
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22 views

Does using multiple HX711 amplifiers change the supply voltage of an Arduino?

I’m creating essentially a load cell using an Arduino Nano and an HX711 amplifier. However, I want to have two HX711 amplifiers running off the same Arduino. Will that change the supply voltage since ...
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36 views

HC-12 modules stopped receiving, cannot understand why

I've created a simple transmitter with an HC-12 and an Arduino Nano (clone), where I send the values of DHT11 and LM35 sensors to a receiver unit made only of a Wemos D1 and another HC-12. Setup is ...
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80 views

DHT Temperature sensors work with Uno but not Nano

I have been trying to write a program that uses the DHT11 temperature sensor and the BMP280 Air pressure sensor. The BMP280 works fine and outputs the air pressure, but the DHT11 does not work. On ...
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43 views

Sound sensor only detect peaks

I'm using this SparkFun Sound Sensor in my project for a simple ambient sound meter. I'm just trying to monitor the raw analog envelope output for the moment. My problem is that the output only ...
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Arduino AT Cmd Not Working

We are Using I-CUBE-LRWA Lora Module AT Cmd with Arduino ProMini Set of commands set with DockLight working Perfectly but with Arduino, we are getting some coded response and well every time RXTimeout ...
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36 views

Error compiling for Arduino Nano 33 BLE with LiquidCrystal library

I recently started coding in the Arduino IDE for the Arduino Nano 33 BLE I bought. When I choose the Nano 33 BLE as my board, I get the following Error: Arduino: 1.8.11 (Windows 10), Board: "Arduino ...
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133 views

Upload already compiled code on Linux CLI without arduino-cli

I have a sketch for an Arduino Nano. I'm compiling it on my build server and get these 3 files: project.bin.elf project.bin.hex project.bin.with_bootloader.hex Now I need to be able to upload/flash ...
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65 views

How to add calibration to a humidity contoller using UNO and DHT22 sensor?

I am using a setup that helps controlling humidity in an enclosure used to store a humidity sensitive product. My original posting is here. I'm using a NANO and a DHT22 temperature/humidity sensor ...
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39 views

Reduce Sketch Size Help!

I dont know what to do? Sketch uses 3712 bytes (12%) of program storage space. Maximum is 30720 bytes. Global variables use 210 bytes (10%) of dynamic memory, leaving 1838 bytes for local variables. ...
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packet selecting in arduino

I want to select a packet from many. In my case, I get data from a Bluetooth module and store it under a byte variable btbt[6]. The problem is there that I want to analyze those packets(i am sending ...
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40 views

Is there an Adafruit function to invert the colors of my screen for Arduino language?

I am trying to invert the color of my OLED display screen once a button is pushed. I have the button situation figured out but I can not find a function that inverts the color. I am using these two ...
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25 views

Does the Arduino deteriorate after shorting the voltage regulator?

I mistakenly connected a 7.4V battery backwards to an Arduino Nano via the Vin pin. The Arduino still works (I can upload code) connecting it to the PC using the USB cable. Here's my question: will ...
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38 views

USB Power switch

Can an Arduino power a USB device like a tablet from one of it's pins or do I need a relay? I want to essentially have the Arduino turn on and off a USB charger. Thanks
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53 views

MAX31855 gives wildly incorrect readings from the termocouple

I'm trying to hook up a termocouple to my Arduino Nano. I bought MAX31855 and connected it like this: ┌───────────┐ GND ──┤•GND ├─ Thermocouple ◇────┤ T- SO ├─...
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28 views

Arduino Nano as ISP programmer and Serial monitor

Is it possible to use an Arduino Nano or comparable as a programmer and simultaneously use it as a serial adapter? Meaning that I would be able to flash another µC (e.g. an ATmega644PA) using avrdude ...
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18 views

Arduino Nano - which battery [duplicate]

I am preparing Human IR detector based on Arduino Nano, where will be "SHD4216 Piezo Electronic Buzzer" for making as much noise as possible activated by "AM312 IR sensor". How to choose best battery ...
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89 views

Strange readings from embedded barometer on Arduino Nano 33 BLE Sense

I've been testing out the barometer (LPS22HB) on my new Arduino, and I've run into two issues with it. The first is that after an inconsistent amount of time from starting to take readings (usually ...
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37 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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56 views

SSD1306 recognized in I2C scaner, can't get it to display

The gist of my issue is in the title. I have a cheap ebay SSD1306 128x64 display which I hooked up to my arduino, and checked the wiring at least 50 times and the address is correct, the display has ...
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41 views

Arduino not writing full NMEA sentence to SD-card file

I'm currently building a small GPS-box that's supposed to track my location and write the full NMEA sentence to an sd card. (I want to pars it afterwards at my pc) I'm using the Arduino Nano and the ...
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How long will program stay in memory without power?

Let's say we program an arduino uno or nano and then stop using it for a while. How long can we expect the program to last on the arduino?
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WS2811 strip not working on NodeMCU, works fine on Nano

Sorry if this is something simple, but im scratching my head over this for a while and there are a few things that have me super confused. I have two WS2811 strips lighting up my outdoor stairs Both ...
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41 views

Arduino Nano Fried on Music Reactive Led Strip

I'm doing a project that involves an Arduino Nano, a sound detection microphone module and a RGB Led strip (individually adressable leds). I also bought an accumulator so I can connect everything ...
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85 views

Connecting an Arduino Nano to a Raspberry Pi Zero

I'm working with an Arduino Nano Every, and I'm trying to connect it to the Raspberry Pi Zero for data collection from I2C sensors and writing/program code from the Pi to the Arduino. Typically, I ...
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Bootloader difference between Atmel328p(through hole) and Atmel328p au(smd)

It’s been bugging me lot that Can’t we burn the same bootloader for both 328p and 328p au? I got confused when I see this linksmd 328p au bootloader burn. Will there be any impact on performance or ...
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Need help deciding Arduino board and ZigBee module for a wireless sensor network [duplicate]

I need to create a ZigBee network in a star topology with Arduino boards collecting the sensor's data at the router nodes of Zigbee. The sensors which I use are a temperature+humidity sensor and IMU. ...
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44 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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37 views

CH340 chip getting fried after connecting Arduino to a powerful 12V souce

I'm using a 120 W DC power supply connected in parallel with ESC and Arduino nano through Vin. However, somehow the Arduino get fried near the CH340 chip, i.e. around the big black square chip near ...
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38 views

Non-Linear readings on Analog Pin A0 vs. other Pins A1

I discovered a curios behavior of my Nano v3. The analog Pin A0 seems to measure data in a non-linear way while the other pins seem to work normal. Please have a look at the screenshot. This is the ...
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55 views

Is it possible to supply Arduino nano with LED-stripe from 12V [closed]

Arduino max amperage is 200mA with 5V supply. But I can connect arduino with LED-stripe to one 12V 40A power supply in parallel. It gives most balanced power consumption between LED-stripe and arduino ...
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32 views

How to make VOLTE/LTE or LTE calls using Arduino?

I want to make VOLTE/LTE calls using Arduino. I searched everywhere in Google. At last I found a website LTE Cellular Shield for Arduino with Voice!. But I cannot find SIM7500 Shield in online shops. ...
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29 views

RF24 code not working:

I watched this video and used his transmitter code and receiver code. However, it's not working. There's no response from the receiver. The transmitter stuck at the loop: if (!radio.write( &data,...
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2answers
58 views

Question about RGB LEDs

I think many people know about the staircase lights, which will get triggered by 2 PIR-sensors (1x upstairs and 1x downstairs). Here is my code - which works well. It's not cleaned up - as i don't ...
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The LED on SIM800L module doesn't blink and the module isn't working

I've recently purchased a SIM800L module from a local retailer. When i have inserted a SIM card and powered it up, the led doesn't blink at all. I have bought the module with a LM317 circuit on board ...
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36 views

NeoMatrix Button Troubles

I am creating a 20x15 LED Matrix using and Arduino Nano. My goal is to switch between different "scenes," if you will, using 4 buttons (I just need to run different code to make it display something ...
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1answer
34 views

What is the best way to assign pins to an LED Cube?

I have made an LED cube that is a 3x3x3 design and was wondering if there is way to make a function in the Arduino IDE where each the layers of LEDs can be represented by a list with 1 being on and 0 ...
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22 views

FlexiTimer giving errors in servo motion

I am working on a quadruped bot, spiderbot and I am trying to make a creep gait using Forward kinematics however, for some reason my code stops working after the execution of the line - [pwm.setPWM(...
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47 views

Powering the Arduino with a battery and reading the battery voltage

I am trying to display the battery level as it is being used to power the arduino. I have tried powering the arduino through the USB and the battery voltage is read accurately, when compared to the ...
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25 views

USB HID library for arduino nano BLE nRF52 board?

I am looking for a USB HID library for arduino nano BLE board. I want to send keystroke through USB serial from the nano to PC. The conventional keyBoard.h library won't work on NRF52 board. I am ...
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Arduino code uploads fine, however avrdude output is not able to read / verify memory

Purchased some clone Arduino nanos a while ago and finally got to working with them. Of the 3 i worked with, 2 of them upload and verify fine. The third is able to upload (code functions properly), ...
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18 views

I can't Upload my code on Arduino ATmega328p(the chip has' atmel 'wrtten on it) [duplicate]

I can't upload my code from Arduino Nano from Arduino IDE. I have used the Arduino with a Shield may times before... I uploaded one code.. but after some Seconds the code was not uploading This is ...
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21 views

to define a object in your own arduino library which is already defined in inbuilt library

I am creating my own GPS library using NeoGPS library. So for fixing the GPS NeoGPS library defines gps_fix as: gps_fix fix; Now i want to define the same thing in my library. How to define the ...

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