Questions tagged [arduino-uno]
The Arduino Uno is the most common of the Arduino boards. It is based on the ATmega328P microcontroller.
1,386
questions with no upvoted or accepted answers
10
votes
1answer
2k views
Update Dynamically Tkinter Widget Scale from Arduino Ports using python and firmata
I'm having trouble trying to get Arduino digital ports values and set these values into a Python Tkinter Widget Scale.
I'm using Python and Arduino with Firmata. I'm able to access my arduino board ...
3
votes
0answers
255 views
Ultrasonic Flowmeter Using TDC-GP22 and Arduino Uno
I'm working on a project of Ultrasonic Flow Meter with TDC-GP22 using Arduino UNO. I used the library of leokoppel
In my code,the configurations of the registers are copied from the Application Note ...
3
votes
1answer
1k views
Flash String Helper object as variable
So I have a Bunch of commonly used char arrays to build commands in my library.
So to preserve memory, I have them put into flash, via PROGMEM ext,
typedef const char PROGMEM ProgChar;
ProgChar AT[] =...
3
votes
2answers
2k views
Atmega328P-PU: Programmer is not responding
Few days ago, I built my own custom Arduino on the breadboard. It is built according to tutorial on http://www.crash-bang.com/resource/breadboard-arduino/. The Atmega328P-PU is already burned with the ...
2
votes
2answers
912 views
How to use external libraries in CLion
I would like to use the external libraries that are downloaded by Arduino IDE into the default sketchbook location (~/Arduino/libraries/).
If you open Library Manager in Arduino IDE and if you ...
2
votes
0answers
93 views
qMenuSystem using DigoleSerial library doesn’t work on my I2C Monochrome OLED
Just like the title says I’m trying to make qMenuSystem to work with my oled display.
Here is what I know so far about my display :
- It's a Monochrome OLED 128x64 (Blue) Display
- It's connecting ...
2
votes
0answers
119 views
Problem in integrating speed sensor LM393 with L298N
I am currently working on a project that has an automatic support wheel for bicycle.
The mechanism of this project is when the speed sensor is detecting the RPM of the rear bicycle wheel it will ...
2
votes
0answers
394 views
Measuring Amplitude/Frequency of sound
I need to read an analog signal at about 500-1000Hz for at least 5 seconds.
I've a battery powered microphone wired into an analog and ground pin on my arduino and am trying to measure the frequency ...
2
votes
0answers
520 views
How to use SPI to set/ read registers for a sensor (Avoiding need for Github Lib)
Ok so as some readers might have seen, my current project involves using MPU's. The idea is sending data via CAN bus to a controlling MCU to then send to a raspberry pi to perform the calculations ...
2
votes
0answers
86 views
TM1638 making high pitch sound?
I have a TM1638 board with 8 seven-segment displays, 8 LEDS, and 8 buttons. Each time multiples leds are on, the board makes an annoying high pitch sound.
I'm controlling it with an Arduino Uno.
...
2
votes
0answers
435 views
Is it possible to put ATtiny85 to sleep while using TinywireS?
I have an arduino uno as the master I2C device talking to an ATtiny85 as the slave.
What I want to do is have the Attiny85 receive a message from the UNO to tell it to power off which will then ...
2
votes
0answers
277 views
How can i change by esp8266 baudrate, as I accidentally changed the baudrate to something else(which I dont remember)?
//In order to connect,
SoftwareSerial esp8266(2,3);
// the TX pin of esp8266 is connected to pin 3 of
// arduino uno and RX pin is connected to 2
// we need to pass baud rate to begin ...
2
votes
0answers
3k views
Slower nRF24L01 round trip delay than expected
Short/summary
I expected that the round trip delay of a nRF24L01+ would be less than 1 ms. In practice I see around 3 to 5 ms and other sources have similar values. Does anybody know why this round ...
2
votes
0answers
1k views
Arduino Uno doesn't work as Manchester code receiver
I'm sending some data from ATTINY85 to Arduino UNO using 433Mhz modules. Coding is Manchester using Manchester.h library from here.
Transmitting data works perfectly, 433 receiver gets data alright.
...
2
votes
0answers
102 views
Problem with coding
Recently I got this code from a friend which is unfortunately unavailable right now.
When button is pressed two halfbridges are supposed to change directions with increasing frequency of direction ...
2
votes
0answers
4k views
Run Servo when detect object on OpenCV Python
I want to connect OpenCV (Python) with arduino Uno when it detects a tennis ball.
OpenCV code:
import numpy as np
import cv2
import serial
face_cascade = cv2.CascadeClassifier('tennisballdetect.xml')...
2
votes
0answers
228 views
Arduino UNO WiFi RestServer returning “not found”
I'm trying to run RestServer on my Arduino UNO WiFi, and I'm currently using the tutorial from Arduino: http://www.arduino.org/learning/tutorials/boards-tutorials/restserver-and-restclient
Everything ...
2
votes
1answer
566 views
ADS1262 and 2.2 SPI TFT (Two SPI Slave) with Arduino
I am interfacing two SPI slave module i.e. ADS1262 and 2.2 SPI TFT with the Arduino Ethernet board.
When I test each device on its own it works. Initially, I interfaced the TFT to the Arduino and it ...
2
votes
0answers
241 views
DHT22 reading weird values
I just hooked up a DHT22 I had laying around in a parts drawer to test something and it is giving out some crazy wrong values, I am running the adafruit library's unified example and this is the ...
2
votes
0answers
507 views
Slow response from ENC28J60
I am making a circuit which turns a LED on and off through internet. I am connecting an Arduino to a LED and to an Ethernet controller(ENC28J60), but when I make a GET request to the device, it takes ...
2
votes
0answers
316 views
Is Arduino WiFi101 library fully compatible with Arduino MKR1000 with WiFi HW?
Will all the classes in this library work with the MKR1000 with wifi hardware?
The guide mentions "wifi shield".
So, does the library work exactly the same with the Arduino MKR100 (with the onboard ...
2
votes
0answers
494 views
Nordic nRf905 (433MHZ) with arduino receive garbage data
I am interface Arduino with nRf905 in receive mode use 433 MHZ.
I Have follow this link http://www.electrodragon.com/w/NRF905_Transceiver_433MHz-Wireless_Module.
And for transmitter, I am use RF-...
2
votes
0answers
624 views
Camera VC0706 not found
I tried connect my Arduino Uno R3 with module camera VC0706 following this instruction of Adafruit: https://learn.adafruit.com/ttl-serial-camera/using-the-camera.
[VC0706] --- [Arduino]
Vcc --- ...
2
votes
0answers
619 views
RFID Code (and setup) works on an UNO but not on the Yun
We're using two RDM6300 RFID readers for this, and the code works when plugged into an UNO, but not when connected to the Yun. We have one of the rfids plugged into the rx pin (0 on the digital side) ...
2
votes
0answers
442 views
Connecting arduino and EV3 using I2C
I'm trying to connect arduino uno and ev3 by using this guide (http://www.dexterindustries.com/howto/connecting-ev3-arduino/),
everything works perfectly but when i tried to use analogRead block to ...
2
votes
0answers
2k views
Sending data from Arduino UNO as a SOAP request
I have a servo motor on one end which can be turned ON and OFF with web service sending SOAP request. In the other end I have my Arduino UNO with ESP8266. Currently, I am able to send HIGH or LOW ...
2
votes
0answers
2k views
How to save data to SD card using Memory Shield Module SPI
I am trying to save some data to the SD card using the memory shield module that I read from HC-SR04 Ultrasonic Module. The data that gets printed indicates error. This is how my SD card module is ...
2
votes
0answers
2k views
How to upload .hex file to Atmega8 Using Arduino IDE and Uno as an Isp?
I want to upload an .hex file to an Atmega8 chip (SMD). I want to use the Arduino IDE and an Uno as the ISP program. But I'm unable to find any details on how to load a sketch which is in .hex format.
...
2
votes
0answers
385 views
Arduino Neopixel affecting IR receiver module
I have tried this on both an Arduino Uno and an Arduino Mega2560. my issue is as follows. Without a 150 LED string of addressable pixels attached, I can pretty consistently capture and read the input ...
2
votes
0answers
226 views
error with avrdude command line using arduino as isp (i think)
I am trying to upload a .hex file to my attiny85v-10pu and using my arduino as a isp (i think thats the right term) but it come up with this error.
ser_open(): can't open device "lpt1": The system ...
2
votes
0answers
1k views
Using Johnny-five API with RFID Controller Shield
Is it possible to use the Adafruit PN532 NFC/RFID Controller Shield with the Johnny Five API? I've searched the depths of google and I'm unable to find anything so far. If it is possible, how can I go ...
2
votes
0answers
6k views
Sending AT commands to a gprs shield using serial port
I have a GPRS shield connected to an arduino uno board, i want to use the shield to send sms and do phone calls, from a C# Wpf application, the arduino is connected to the application using the serial ...
2
votes
0answers
172 views
Uno Ethernet shield and TMP36 reading
I am just getting started with my Uno via the Vilros Ultimate Starter Kit. I've done all of the sample circuits and played around with a few other things.
Today I connected the Ethernet shield with ...
2
votes
0answers
174 views
How far can i go just with this starter kit?
I want to buy this kit: http://www.banggood.com/UNO-Basic-Starter-Learning-Kit-Upgrade-Version-For-Arduino-p-970714.html
However, as shipping stuff from China takes like 3 months to arrive, i need to ...
2
votes
0answers
2k views
How to read temperature using arduino uno board with PT100 RTD sensor?
I am new to arduino programming. And almost inexperienced.
I am looking to program my arduino Uno board to read 2/3/4 wire configuration of PT100 RTD sensor (in accuracy levels of atleast 0.5°C). The ...
2
votes
0answers
776 views
Why won't Wifi Shield detect any networks? Even really close
I just purchased an Adafruit Wifi Shield CC3300 and strapped it onto my Arduino Uno board.
I'm running this basic sketch that I found to test the functionality of the Wifi Shield: http://arduino.cc/...
2
votes
0answers
199 views
Why does avrdude error appear when interfacing GLCD with arduino uno in ubuntu
I want to interface a GLCD with arduino uno. The GLCD is JHD12864E. The connections are as shown in this image
I downloaded the OpenGLCD library and uploaded HelloWorld program from it.
I got ...
2
votes
0answers
1k views
Interfacing SD card with arduino without shield
I am trying to connect SD card with arduino without using a shield. To convert to 3.3v, I have used voltage divider circuit as described in these two sites:
http://garagelab.com/profiles/blogs/...
2
votes
0answers
1k views
Hub RFID Arduino + WIFI
I will start an Arduino project and its main requirement is that some RFID readers (at most 6 readers) be connected and controled by the arduino board.
I do not have a strong background in ...
2
votes
0answers
674 views
Negative value conversion for modbus slave
I have an analog sensor which reads values 0-5v, -75 degrees to 75 degrees. Now I have converted to +75 degrees and -75 degrees format depend on the voltage.
From 2.5v to 5v data is read properly (i....
2
votes
1answer
3k views
Running two stepper motors with two rotary encoders
I'm really bad with this coding part of using two rotary encoders to control two stepper motors [using 28BYJ-48 stepper motor with the ULN2003 board].
This code works fine using one rotary encoder for ...
2
votes
1answer
1k views
How to send HTTP request to specific port using Ciao?
I currently have a working REST client on my arduino, but the requests always go to port 80, how do I make it send the request to a specific port?
This is my current code:
/*
File: RestClient.ino
...
2
votes
1answer
48 views
arduino sketch on Win7 vs. MAC op system?
I have a friend who is just getting started with Arduino UNO. He downloaded a sketch and is using a UNO on Mac OS. He loaded the sketch and verified. it comes up with errors. He sent me the same ...
1
vote
0answers
22 views
Trouble with basic communication between two NRF24L01 modules
Introduction
I am trying to setup a radio communication using the NRF24L01 module because I want to use it to control a tank. The first thing I did when I got the modules was watching some basic ...
1
vote
0answers
35 views
Chance light intensity in a pwm pin using LDR using Arduino UNO
I am using proteus and Arduino software to simulate my circuit. What I need to do, is to have an LDR in my Arduino uno. When light intensity increases in my LDR, I need another LED which is connected ...
1
vote
0answers
49 views
NRF24I01 with antenna Communication Delay
I am doing my senior design project which is due in a week, I am currently using the NRF24I01 with antennas for both the transmitter and the receiver. I am building a robot that is suppose to climb a ...
1
vote
0answers
32 views
L293D to change the direction current and amplify it - Temperature-Stabilizer
I have a question about my project. I'm going to make a temperature-stabilizer. To make this, I think I should use a TEC with a H-bridge and a LM35. First of all, I tried to make a H-bridge by myself, ...
1
vote
0answers
48 views
How to get my LCD contentiously updating with data from sensor?
EDIT DOWNSTAIRS:
Hello beautiful people of the internet! How are you smart people doing with all that's going on these days. Okay so the title says it pretty much. I've got a code and inside of my if'...
1
vote
0answers
59 views
Uploading a sketch without using the usb cable
I've lost my usb cable used to upload a Sketch to my arduino from my laptop. I do have my Bluetooth 4.0 module. Can I use it to upload my sketches?
1
vote
0answers
36 views
Project concerning wireless communication between raspberry pi (transmitter) and arduino uno(receiver) using nrf24l01. Receiver not working
We are trying to send a message using NRF24L01, raspberry pi as transmitter and arduino uno as receiver. Our concern is, the receiver arduino might not be working because we are not getting the proper ...
