The Arduino Uno is the most common of the Arduino boards. It is based on the ATmega328 microcontroller.
0
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1answer
19 views
Creating a Timer using a Real Time Clock with start and stop times
I have an Arduino Uno with a motor shield, as well as a DS1307 RTC that I am using to control 2 pumps.
Ideally I would like to set a start time (startHour + startMinute) and end time (endHour + ...
0
votes
1answer
13 views
Why is my TMP35 giving me weird values?
A TMP35/36/37 is giving very high voltage readings, which results in high temperature readings. The serial monitor looks like this:
As you can see, the sensor value is in the 900s, voltage is almost ...
0
votes
0answers
7 views
MPU6050, Bluetooth — FIFO Overflow and Breakdown
I am quite new to all the arduino stuff and right now I am struggling with a Problem that seems to be easy, but I have honestly no idea how to deal with it.
I would like to read the data from a ...
0
votes
1answer
19 views
graph of a function Arduino
I am making a temperature circuit with arduino.
is there any way to plot the value of the temperature in a graph using arduino?
thank you very much in advance
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votes
1answer
21 views
Regulation of the temperature using PID
I'm making a control system for the heating of a plate using a PID control.
the goal is to regulate the temperature of the plate by changing the power dissipated by the resistance. By using a sensor ...
0
votes
1answer
13 views
Arduino UNO with Sparkfun MP3 Trigger
I have a basic mp3 trigger with arduino uno setup:
Trigger - https://www.sparkfun.com/products/11029
Arduino Uno code:
#include <MP3Trigger.h>
// Script Function: RobertSonics mp3trigger ...
0
votes
0answers
22 views
Horse racing game
Basically i would like to create a horse racing game, (5 horses starting all to a point A and finishing in a random position to a point B).
I did an animated GIF for you to understand it more clearly ...
0
votes
1answer
41 views
arduino does not work when using resistors
i have witnessed a strange behavior of my arduino uno R3.
each time i wire up a resistor into the breadboard, it simply does not work.
for instance, i wired up an LED + 1Kohm resistor to the 5V and ...
0
votes
0answers
6 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 ...
0
votes
5answers
36 views
Arduino Temperature sensor with a LED
I want to program a temperature sensor with a LED using Arduino.
the goal is to make a sensor, when the temperature is over than Temperature max, the LED turns off and when the temperature is small ...
0
votes
1answer
24 views
I have two 6 volts DC motors connected to L298N motor Driver. Do I need to use 12 Volts battery?
I have two 6 volts DC motors connected to L298N motor Driver. Do I need to use 12 Volts battery?
0
votes
1answer
20 views
Understanding values from an MPU6050
Im trying to understand the values that im getting from my MPU6050. I believe that there is a problem with my code. Im not entirely sure how the code is supposed to look like. There doesnt seem to be ...
0
votes
1answer
17 views
Arduino uno retrieving data from azure mobile services
I am trying to make it so my Arduino controls the temperature of a room. I am using Microsoft Azure mobile services to be able to view the data from an app on my phone. I followed this guide to post ...
0
votes
1answer
23 views
Will there be any pin interference in this Project?
I am working on a project with Arduino Uno Clone. After having a look on my arrangement, please tell me whether I will have to face any difficulty or consider any thing.
I have a relay on pin 2 ...
0
votes
1answer
18 views
PC <-> Xbee <-> Another Xbee Communication
I have this application where I want to send commands from the PC to an Arduino, remotely, and receive an answer back.
The hardware configuration I'm using to achieve that is the following:
PC ...
1
vote
4answers
31 views
Create a device to detect object state
Here is what I want to do or get it done (since I am not a embedded guy)...
create a prototype with Arduino to detect open window/door of my room using camera(image processing/object state ...
0
votes
0answers
22 views
arduino serial comminucation
my vb.net app produce this result as 2d array :
01110000000111000
01110000000111000
01110000000000000
01110111000111000
01111111100111000
01110011100111000
01110011100111000
01110011100111000
...
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votes
0answers
12 views
Playing Melody with Tone() without using delay()
Is there a method to play a Melody with Tone() without using the delay() function?
tone(8, melody[thisNote], noteDuration);
int pauseBetweenNotes = noteDuration;
**delay(pauseBetweenNotes);**
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votes
2answers
54 views
What is the best arduino board for a robotic arm?
In my university we need to buy arduino boards and kits to build a moving robotic arm, that moves up and down and clockwise in a specific degree (almost like humans's).
So, what's the most suitable ...
0
votes
1answer
39 views
Connecting two arduinos using WiFi
I have two arduinos (An UNO R3 and a Mega 2560), and I need to communicate them via two ESP8266 modules to exchange some values.
In one arduino I'll use a SW-420 vibrarion module, and I need to send ...
0
votes
0answers
11 views
Teensy and MS5803 sensor
I'm trying to use the ms5803 sensor with a Teensy 3.2. Compiling the Sparkfun or other libraries, however, results in no output. Can you provide guidance on how to modify the libraries to work with ...
1
vote
1answer
26 views
Using L298N to control DC Motor
I am developing a system where I want to control the direction of the DC motor (12V) from Arduino Mega/Uno. For that, I am using L298N H-bridge chip without the board as shown below.
My question ...
0
votes
2answers
25 views
Please explain this OneWire communication with Arduino Uno and DS2502-E48
The goal is to read the MAC address from a DS2502-E48 chip.
I think I accomplished this goal too with the following code, but I can't get behind at how this works.
I had a similar program with a PIC ...
0
votes
1answer
16 views
Synchronization and Implementing hamming code on Software Serial
I want to learn and use Hamming Code. Would it be wise to
alter the Software serial library to do this or just change the data being
transmitted in the actual Arduino sketch?
Also, for means of ...
0
votes
1answer
13 views
Read function in Software Serial
I have a question regarding how the read function works in Software Serial.
recv reads the bits a receiver picks up into a serial buffer. than read returns a uint8_t. However, when i set read() equal ...
0
votes
1answer
25 views
GPS coordinates
how do I compare coordinates I receive from the GPS module with the coordinates that I had hardcoded into the arduino, for example:
if (GPS reading <= hardcoded)
movecarforward();
else
...
0
votes
1answer
23 views
Detect if a chair is occupied using Arduino with some sensors
I want to detect if a seat is occupied by a person. This is the answer that I found on Stackoverflow.
However, how accurate is the output of 4 suggested sensors? Will the computing of all these 4 ...
0
votes
3answers
17 views
TMP36 probe reading 0 on analog
I've designed this system which is supposed to turn on the LEDs when the temperature of a particular probe exceeds 32 degrees. From what I can tell, this should be functional but the analog sensor is ...
0
votes
0answers
16 views
Interfacing ADS8319 with Arduino UNO
I am using Arduino UNO and trying to interface 2 16-bit ADS8319 ADCs with it via the SPI interface.
I have interfaced the 2 ADCs with the micro-controller using the "4 Wire CS Mode Without Busy ...
0
votes
2answers
17 views
How to resolve my Timer Interrupt issue
I am trying to work with arduino timer1 interrupts to make an led blink every bit on an 8 bit number, depending on whether its a 1 or 0. However, im trying to make a basic blinking program, and it ...
0
votes
0answers
29 views
Voice on arduino
I want to made an arduino which talk on button's click. I've only got a arduino uno and an speaker. With some tutorial, I've success to make talking arduino. But, I cannot add my own voice and sound, ...
0
votes
2answers
38 views
Formatting and code errors?
Hello I have managed to get both the Adafruit Datalogging shield walk-through and this individual code working http://www.learn.parallax.com/reed-switch-arduino-demo separately, but trying to combine ...
0
votes
0answers
19 views
How to switch program between automatic and manual control from same program
this is for solving maze and after solving maze we should control it manually. so I didn't get how to turn or block th condition that are used to control robot automatically after reaching to end zone ...
0
votes
4answers
33 views
Relay doing opposite to digital pin
I have a Arduino UNO with a Ethernet shield which hosts a basic HTML page with a button on it which controls a Relay module.
I'm trying to connect to a computer's power button so I can turn it on ...
0
votes
1answer
24 views
H-Bridge L298N motor driver
I have 2 motors connected to a dual H-Bridge motor driver and the H-bridge connected to an arduino uno, It was working fine at first but now my motors are spinning very slow and the car bearly moves, ...
0
votes
0answers
11 views
Sending data from Arduino to the server where arduino (sketch) acts as a client
I want to make simple client-server program where arduino behave as a client. For example I have a LED connected in arduino board that is controlled by a switch. With the switch I can turn off and on ...
0
votes
1answer
39 views
Can anyone explain how this code can be converted to work on a Arduino Uno
I was hoping someone could help, im totally new to this. I wish to use this code for a Raspberry Pi on an Arduino Uno with the Adafruit SD data logging shield. It is for recording reed switch closures ...
-2
votes
1answer
19 views
Is there any tutorial for RS485 shield v1?
can i use the arduino code of v2 to operate v1 ,thanks in advance
http://linksprite.com/wiki/images/thumb/2/28/RS485.jpg/400px-RS485.jpg
0
votes
1answer
12 views
Intercept Data being sent to XBee Module via UNO
An XBee Pro S1 module sits on a DIP socket on-board a Personal Weather Station (PWS) to transmit data.
Instead of letting the station transmit data wirelessly via the XBee, I would like to read that ...
0
votes
0answers
7 views
what is the fastest shield to add to the sparkfun v3.2 Arduino Uno that will enable me to playback and record hour of short audio dictation
I have almost no eexperience building electronic kits. I just buoght and began tinkering with sparkfun 3.2 and want to adapt its simon sketch to real audio files
What isis theeasiest to assemble add ...
1
vote
0answers
17 views
Arduino port recognition
New Arduino Uno, Arduino 1.6.3, MBP running 10.10.5.
The Arduino IDE is running, I connect to the laptop via usb. The green LED is on the amber light is on but it's not blinking.
I attempted to ...
0
votes
1answer
33 views
How to make a main hub
I want to build several sensors connected with ESP8266. My idea is to send all the sensor values to a main node (hub), where can be stored the values in a csv file for example.
After that I want to ...
0
votes
1answer
10 views
Arduino Uno + Adafruit Ultimate GPS Shield Serial issue
I've had an Arduino Uno for a couple of months-making basic sketches-and recently purchased an Adafruit ultimate GPS shield and attached with soldered headers. This shield has 2 options for reading ...
0
votes
1answer
15 views
Math with analog input values coming out wrong
Im getting stuck in a while loop because Im having trouble running a calculation on some sensor values. When I read my four sensors values and compare the ratio of the first two to the second two, I ...
1
vote
1answer
34 views
Debouncing a limit switch in Arduino ISR with delays
I have a limit switch attached to an arduino Mega 2650 for motion control. The limit switch's two Normally Open contacts are connected to an Arduino Pin and ground, such that when the Limit Switch is ...
0
votes
0answers
7 views
Serial Monitor is displaying the output without delay using xbee communication
I'm basically facing the exact same problem as explained in this post
I'm following this tutorial on how to make simple chat program between two xbees. I'm using two xbee S2, two xbee shields, and ...
0
votes
1answer
21 views
Capacitive sensor MPR121 on Arduino Uno—how many will work?
I need to attach several capacitive sensors MPR121 with each of them using all of its 12 electrodes to an Arduino Uno.
Could you please tell me, how many will work with the voltage and current ...
-1
votes
0answers
26 views
Finding duty cycle and time period
How can I find the duty cycle and the time period of a pulse train waveform using arduino uno?
** Question: Given an input waveform (pulse train) from function generator to the controller. Generate ...
0
votes
2answers
26 views
Extracting high and low bytes from long
I am learning Arduino from "Arduino cookbook by Michael Margolis", i was reading about bitwise operations and extracting low and high bytes from int. He said that there is no function in Arduino to ...
0
votes
2answers
233 views
Problem with connecting ESP8266 to arduino
I have:
Arduino Uno
ESP8266
Problem:
I see SoftAP and can connecting to it. But i can't send AT-commands to ESP8266 from Arduino.
I use Arduino app v.1.6.5 for send command to ESP8266 via Arduino. ...
