The Arduino Uno is the most common of the Arduino boards. It is based on the ATmega328 microcontroller.
0
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0answers
3 views
Reading Multiple RFID Tags Using RDM 6300
Instead of the question in Reading Multiple RFID Tags using RDM6300 125 khz
Sorry guys to trouble again.
For my project I need to scan a set of RFID Tags, which has frequency of 125KHz, I was able ...
-2
votes
0answers
11 views
Reading Multiple RFID Tags using RDM6300 125 khz
I need to read multiple tags using RDM6300 rfid reader which is operating at 125khz frequency. are there are any solutions to work with Arduio, SoftwareSerial
-2
votes
0answers
25 views
Need help for count total number of GPIOs for ARDUINO ETHERNET REV3 (ATMEGA328)
I have a ARDUINO ETHERNET REV3 board with ATMEGA328 M/C. There is a shield for display, so I can't figure out the exact number of pins.
As, I want to calculate the total number of required pins.
...
1
vote
1answer
32 views
How can I tell how large my program is?
Scenario
When I upload my project via the Arduino ide I see this at the bottom:
Writing | ################################################## | 100% 4.14s
avrdude: 25698 bytes of flash written
...
-1
votes
0answers
16 views
Arduino-UNO Programming [on hold]
I'm doing a surveillance project using arduino UNO, sd card module, OV7670 and PIR sensor but can't get the programming right. could i get a correct programming for arduino UNO
-1
votes
1answer
34 views
control multi adruino over the internet [on hold]
I have three arduino in different locations (house 1, house 2, office) and I am trying to build a web application to control these arduino, what are the possible ways to distinguish between then over ...
4
votes
2answers
72 views
Sending uint16_t over I2C
How do you transmit and read a uint16_t over I2C?
I'm trying to read two uint16_t values from a slave device, and I'm seeing nonsensical readings.
This is the code on my slave Arduino Uno:
#include ...
3
votes
2answers
40 views
Pinball - “All Lanes Lit” Bonus score is not behaving as expected
I'm trying to build a (very basic) pinball machine with an Arduino Uno. This part of the code will detect when a ball passes 3 lanes. When a lane is passed, it will activate the lane(laneState), ...
1
vote
0answers
40 views
Determining if an LED on another device is on
I'd like to check if this circuit I'm making is correct -- I'm concerned I'll mess up my Arduino. Essentially, I would like to determine if an LED on another device is on or not by measuring the ...
2
votes
1answer
46 views
Use transistor to press button on external device
I have a small device with a simple push button. I'd like my Arduino to be able to make the device register button pushes. It seems like the best way to do this is to use a transistor to close the ...
2
votes
0answers
33 views
Serial Communication Between 3 Arduinos Doesn't Work (Daisy-Chain)
In my project, I have to send a string from one arduino to a second arduino, and make it send the same string to a third arduino. I used UART and SoftwareSerial library, and connected the arduinos ...
0
votes
1answer
27 views
Is it possible to hookup two ultrasonic sensors to one Arduino Uno unit?
I found a couple of projects using Ultrasonic Distance sensor with Arduino Uno. Is there a way to connect two or more sensors on the same Arduino Uno?
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votes
2answers
19 views
Arduino box stops working: Reading RFID tag and sending data over network
This is a simple Arduino program which reads RFID tag and sends the data over a network (lora).
The program works fine in as i run it, the arduino reads RFID and sends it over the network (lora)
...
-5
votes
0answers
39 views
Scroll only one line & another line is fixed [on hold]
I want to make humidity and temperature measurement display on lcd(16x2) where 1st row is fixed(showing Humidity) and 2nd row is scrolling(showing Temperature). Please send me the arduino code.
...
1
vote
1answer
42 views
Individual control of multiple RGB leds
I'm trying to control several RGB leds individually. So far I've been able to control multiple RGB leds using only 3 PWM outputs using NPN transistors as shown here (pic below).
I would like to ...
-3
votes
0answers
20 views
Draw arduino and rfid circuit [on hold]
I'm using isis 7 professional to draw the arduino circuit. however i cant find the rfid component in that program. ive search over the internet the rfid library for isis 7 but i found nothing. can ...
0
votes
0answers
9 views
connecting both ov7670 and hc05 to arduino
I'm trying to send images from the ov7670 to my computer and in response to the type of image send something back to the uno, I'm trying to send back to the hc-05 through Bluetooth but the serial ...
0
votes
1answer
37 views
Arduino Uno outputs 8V when pin is set to HIGH
I am doing the following in setup:
pinMode(13,OUTPUT);
digitalWrite(13, HIGH);
When I check with the multimeter, I get an output voltage of 8V rather than 5V. What may be the problem and how do I ...
0
votes
0answers
11 views
can't find Nexion libraries for arduino
I'm new to Nextion HMI and i try to import the Nextion libraries for arduino it didn't work as expected can any know any reference for download the Nextion libraries for arduino
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votes
0answers
42 views
Simplifying my Arduino circut
I created a circuit to control the directions of two motors. I am trying to learn how to use this to eventually, if I get good enough, make a programmable auto tripod. So far I am learning to use ...
1
vote
2answers
22 views
WiFiClient.connect() does fail all the time (ESP8266 Core for Arduino)
I have one ESP(1) opening an AP and running a server on it. The other ESP(2) is running a client on it and is connecting to the AP and after that trying to connect to the host server. The connection ...
4
votes
1answer
36 views
Motor running slowly when connected to digital pins, but fine with 5V pins
I am trying to connect a Dagu DG01D motor to my Arduino Uno. First I tried connecting the black wire to GND and the red wire to digital pin 7. My code:
void setup() {
pinMode(7, OUTPUT);
...
1
vote
1answer
35 views
Possibility of installing custom firmware from Arduino Uno R3?
I've been messing around with installing keyboard firmware onto my Arduino UNO R3 (I used this tutorial) and had an interesting idea: would it be possible to have this install custom firmware, ...
1
vote
3answers
59 views
Making three LED's blink at given times
I have a breadboard connected to an Arduino Uno, 220k resistors connected to an led, of course it has a common ground and a pin connected to 5v. All pins are digital.
Now, I want led 1 to turn on for ...
1
vote
1answer
20 views
Sending IR via a wire
So i have taken apart this old remote i found, and removed the IR-LED and replaced it with wires.
I thought that i would just be able to put the wire that used to go to the positive side of the IR-...
0
votes
2answers
45 views
Making three led's blink at different times in Arduino
I have a breadboard connected to an Arduino Uno, 220k resistors connected to an led, of course it has a common ground and a pin connected to 5v. All pins are digital.
Now, I want led 1 to turn on ...
0
votes
1answer
26 views
Use an electromagnet for reading induction aswell
I have an electromagnet that I wish to use to pull a neodyne magnet closer.
I'm thinking of having the electromagnet sensing when the magnet is close, but when the magnet is running I'm pushing 12 ...
-5
votes
0answers
28 views
Sone one is running a backround backup of all i do and i need help rooting my phone [closed]
I noticed that i have some form of Java or some other script tgat is backing up all that i do, and then sending it to some where else. I thought that if i roited my divice i could dig deeper into my ...
-3
votes
1answer
25 views
arduino uno + l298n motor driver+ 2 dc motors + 2 Ir sensors
I've been doing a line follower project for a week
Now I've completed connections but only one motor is working
MY doubt is: How to interface arduino uno and l298n
What i done was
I connected 2 and ...
-1
votes
0answers
16 views
I m trying to send the heartbeat value to ph through gsm..bt i m not getting msg in ph.can anyone correct my code
#include <SoftwareSerial.h>
SoftwareSerial mySerial(9, 10);
int in=8;
int count=0,i=0,k=0,rate=0,heart_val;
unsigned long time2,time1;
unsigned long time;
int sms_count=0;
void setup()
{
...
-1
votes
2answers
24 views
Delay In receiving data when SoftPWMBegin(); is used from SoftPWM.h library
when i use SoftPWMBegin() function in setup there is some delay while receiving data over bluetooth. And if i pressed o and 1 fastly (see in below given code), some time it receives data and sometime ...
0
votes
1answer
37 views
Applause reactivity
I'm making a pretty basic light circuit and I'd like to have it react to applause or laughter, but NOT during regular speech, amplified over speakers.
I'm wondering if anyone has already made a ...
-1
votes
0answers
13 views
Displaying live IMU data in a 3D model from bluetooth HID source [on hold]
I would like to be able to visualize the raw IMU data I'm reading. When I rotate my imu, I'd like to see it update on the visualization on my pc. I have a 9 axis imu(https://www.sparkfun.com/products/...
2
votes
1answer
40 views
Crosspack instead of Arduino IDE, how to include Arduino.h
I quit using the Arduino IDE, instead I am now using Crosspack via the command line on my Mac.
It is working totally fine. I use "make" to compile it, "make flash" to upload it to the Arduino.
This ...
-3
votes
1answer
19 views
Connecting an optris to an arduino uno to send and receive hex strings
I have an optris CT IR sensor, data sheet below.
Is it possible to connect the Uno to the sensor, so I can send a hex string (01) and hopefully receive a hex string from the sensor (04 D3)?
https://...
0
votes
1answer
34 views
Communicate with ESP8266 RX/TX
I just managed to get a unofficial Arduino WiFi shield to work. But the ESP is flashed on its own now - providing only information to the USB->TTL converter and therefore the output goes straight to ...
-3
votes
1answer
40 views
Arduino Parse data serially on VB [duplicate]
I am working with Arduino Uno, I have tracker application running on Arduino Uno board. I am sending data in comma separated value. Now I want to view data into Visual Basic. I have code as below. The ...
-4
votes
1answer
37 views
Arduino Serial data receive on visual basic [on hold]
I am trying to receive data from Arduino using visual basic. With below code i can able to recieve data over Serial communication. Problem i am facing parse the Serial data and put into textbox.
...
-1
votes
1answer
36 views
XBee mass production price [closed]
I want to create a product that would use Xbee (series 1) and one IR sensor. But Xbee retail price is about $25 per unit. So my question is how will i be able to take the price down for mass ...
3
votes
2answers
359 views
EEPROM bytes preset to 255 while programming
I'm working on a program with Arduino Uno which involves writing and reading EEPROM. I'm using a basic EEPROM library. My problem is: EEPROM values are preset to 255 whenever I burn my program. And ...
0
votes
1answer
22 views
using an ESP8266 shield on my Arduino Uno R3 with an unofficial library
I'm using the following Makefile: https://github.com/sudar/Arduino-Makefile
It works very well and I was able to get my LED to blink.
Now I bought a WiFi Shield which is NOT supported officially by ...
-3
votes
1answer
42 views
I want some help guys about arduino code for valve [closed]
I really need someone to helop me about Arduino code, the code for valve. i need the valve to go from fully closed to fully open in five steps stopping for
one second between each step.
-3
votes
0answers
31 views
How to show on screen with LCD 20x4 the current time , temperature, humidity and day
How to print on the screen the current time temperature , humidity, counter to account as light and driven , state whether the light was thrown or not
//Programa : Temperatura e umidade com o DHT11 e ...
0
votes
1answer
24 views
how to get an unofficial WiFi Shield to work?
I just bought these two WiFi Shields -> http://www.ebay.de/itm/262525969091?_trksid=p2060353.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT
As they arrived I put one of them onto my Arduino Uno R3 and ...
1
vote
0answers
22 views
How to attach Arduino MKR1000 to a shield meant for Arduino UNO?
I have an Arduino MKR1000 and need to interface it to an Adafruit Music Maker shield, which has pinouts for an Arduino UNO.
Maybe I'll have to attach female headers, and then jumper pins over.
Which ...
-5
votes
0answers
27 views
How I can send sms by arduino?
How I can send SMS to multi number?, I want to send SMS through SIM900 to 3 number same massage, I use Arduino uno and gsm Sim900 module, by this code send just to one number,, I want same code but ...
1
vote
2answers
31 views
How I can use multi sensor in one code in Arduino?
How I can use multi smoke sensor in one code? I mean how can I use more than one sensor, where both sensors has the same purpose, like use smoke sensor in multi room. Similar to this code where one is ...
2
votes
2answers
47 views
What are the logical errors in this piece of code?
The client always reply with "ThisCodeTurnsTheUnoOnn" or ThisCodeTurnsTheUnoOff" based on some conditions.
This piece of code is inside arduino uno's void loop().
Expected behavior:
The arduino ...
-3
votes
0answers
24 views
Controlling Direct Tv with arduino
I have 3 tv that has direct tv on them. the receivers are DIREC TV H24 HD Receiver (i believe i meant to grab the exact model # off them before i let work but failed to do so) I want to add a in wall ...
1
vote
1answer
40 views
LCD 16x2 Blank Display
I am using the following wiring diagram from a tutorial. I need to follow this configuration because later tutorials build on this example. I have looked at other solutions, but they follow a ...
