The Arduino Uno is the most common and one of the newest Arduino boards. It is based on the ATmega328 microcontroller.
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15 views
Fast logging of data to SD card
I am trying to log data onto a SD card using UNO and the speed is critical. I am using two buffers to achieve this, so that when the data is being written to SD card the data from ADC gets stored in ...
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0answers
12 views
Arduino as ISP for attiny85 to drive 4-digit 7-segment using two 74HC595N shift register not alternating fast enough
I am using an Arduino Uno to program an AtTiny85 (1MHz) to drive a 4-digit 7-segment LED (common cathode, 12-pin). I'm just counting from 0 to 9 and alternating between the first two digits (pin 12 ...
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0answers
5 views
Teleduino with CC3000
I have just bought the CC3000, and it looks great.
However, I want to use my new WiFi connectivity with Teleduino service, but the Teleduino examples and code only support Ethernet connection.
I have ...
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0answers
23 views
Analog Input not going to Zero
Arduino Uno user here
I am building a project with 4 analog inputs A0 dose not work. A1 A2 and A3 work perfectly fine! But for last input when I connect to A4 or A5, then they do not go to zero. They ...
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0answers
15 views
Receive multiple data from arduino using String builder
I am working on a small project where I have to read data from different hardware and display it on android app. I am using arduino Uno to get the values from a sensor and a motor and I use a ...
1
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2answers
42 views
16Hertz Uno R3 Board vs Arduino Uno R3 Board
I bought a 16Hertz Uno R3 Board. When I installed the driver and the Arduino IDE, in the IDE`s menu I saw:
Tools -> Board -> Arduino Uno
was selected by default which is great, ...
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votes
2answers
26 views
“write” function in sd card is not working
I have recently started working with arduino UNO and the "write" function in sd Card library is not working. Below is my code. I have tried with "println" which is working fine. Any help regarding ...
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0answers
6 views
convert to zero-index to match javascript's dates not working [migrated]
i used some of this code from an example, however the part where it says "convert to zero-index to match javascript's dates" does not seem to work.
I have -1, but the date still keeps showing 1 ...
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votes
3answers
39 views
Can I control my Arduino using just a 2.4GHz Wireless Transceiver and a wireless Xbox 360 controller?
I want to control my Arduino using my wireless Xbox 360 controller. I've been looking up tutorials, and they all seem to recommend using a USB shield and the Xbox 360 wireless receiver.
I don't own ...
1
vote
1answer
12 views
Error with Arduino/Processing Serial Communication
I am relatively new to both Arduino and Processing and I have been working on a code that utilizes serial communication between the two. My Arduino code is reading and printing values from a piezo ...
-2
votes
1answer
35 views
What you should't do with your Arduino [on hold]
You probably own an Arduino board or you thinking to buy one to play around. Before you start linking wires and using the digital pins you migh need to understand few things on how to protect your ...
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votes
3answers
35 views
What info should I look for when choosing a solid state relay for arduino?
I want to control a phone using an arduino board by connecting each pin of the arduino to a button on the phone using relays to simulate a button being pressed or release by switching a relay ...
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votes
1answer
25 views
Stop servo when enter 0
I am trying to stop servo motor from rotating when I enter 0 in serial. The code is below. Can someone please help?
#include <Servo.h>
Servo myservo; // create servo object to control a servo
...
2
votes
1answer
66 views
I²C between ATTiny85 (8MHz) and Arduino Uno
I keep receiving the following error in myATTiny85-Slave code below:
sketch_mar12a.ino: In function 'void setup()':
sketch_mar12a:19: error: 'class USI_TWI_S' has no member named 'onRequest'
...
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votes
1answer
17 views
Serial Error Correction
I currently have a setup where I take serial output from Arduino 1 and push it through a transmitter to the receiver of Arduino 2 where it is fed back into the serial input and further processed. I ...
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0answers
18 views
IR Remote as a keypad [on hold]
i need help plz ASAP
i want to know if could use IR REmote as a keypad to put in password open or close door?
how do we program Ir Remote act as keypad so we can put in the password like 1234
to ...
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0answers
13 views
Home-Made EL Tape chaser
I am working on a project involving 14 sections of EL tape. This is a circular array that incorporates a chaser effect with two lights lit on either side. originally I had found a small diy LED ...
2
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2answers
52 views
Difficult between atmega328 & atmega2560 when coding & compiling in a pure c
I have an arduino uno with atmega328p controller.
I found the code to deal with some specific uart protocol, named mdb: https://github.com/Bouni/MateDealer/tree/master/arduino
But it's compiled just ...
-1
votes
1answer
24 views
Connecting light and temperature sensors and LEDs to an Arduino
Fairly new to arduino, what is the best and simplest way to connect an LM35 temperature sensor, a GL5528 photoresistor and some LEDs as well as the required resistors to an arduino for recording ...
1
vote
0answers
28 views
Can I use an Arduino and GSM breakout board for triangulation?
IS there a way for me to use cell towers to triangulate my location with an Arduino Uno and GSM breakout board? if so how?
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vote
2answers
57 views
which is the most efficient way to save power with battery using Arduino UNO?
I am working with a ArduinoUNO - 2100 mA battery, and a solar Charger shield. I use a temperature reader that sends info every half hour with GPS-GSM shield called LONET ...
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2answers
42 views
Powering USB device from arduino uno?
I'm wanting to power a USB device from an Arduino Uno. Forgetting about the two data pins, it just requires power. Using a power meter, I can detect the 5v pin at about 4.95 volts, however I don't ...
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0answers
26 views
Pair of nRF24L01s ping/pong example sketch works, but using my own code, fails after first successful transmit
I have a pair of nRF24L01s connected to a pair of Arduino Unos and I'm using the RF24 library from here: RF24 library. When I run the pingpair example sketch, the radios transmit and receive back and ...
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0answers
21 views
Master remote module supports many slaves [closed]
Is there any remote module (like bluetooth, radio) that can support many slaves (up to 20).
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0answers
21 views
Adding HC-SR04 ultrasonic sensor to the board [duplicate]
I would like to add three more HC-SR04 sensor
Currently I have combined the Arduino UNO R3 with the AR 293d(refer to below graph), and pluged in one HC-SR04 sensor to the SRO4 hole at the left top ...
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2answers
29 views
Arduino Uno with CC3000 Wifi Shield Cannot Initialized
I am working on arduino UNO and CC3000 Wifi shield. I interfaced it over my arduino. And Added SParkFun library SFE_CC3000_Library, then i opened TestBoard example. but it stucks on setup in the first ...
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votes
1answer
57 views
Arduino on ubuntu 14.4 gives “Broken pipe” and “Input/output error”
Im using arduino (R2) uno board and my pc is running 64bit ubuntu 14.4.
I was previously using arduino on ubuntu 10.04 for a long time and got no error. I recently moved to 14.4 from 10.4.
I ...
1
vote
0answers
18 views
ModbusMaster.h - changing node
I'm using the ModbusMaster.h library on a project, with arduino-uno and a TTL/RS-485 converter, and the function has to identify the slave that it is communicating. The slaves goes from 1 to 16. After ...
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0answers
29 views
Atmega 328P-PU vs 328P-AU [duplicate]
im planing to make my very own arduino design based on the Arduino PRO mini. I picked this board instead of the UNO mostly because it's way more simpler compared with the UNO since the USD-to-Serial ...
0
votes
1answer
54 views
How to add Ultrasonic Sensor to the board?
I am making an RC car , have combined the Arduino UNO R3 with the AR 293d, and pluged in the HC-SR04 sensor to the SRO4 hole at the left top corner in the below graph. However, besides one sensor I ...
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votes
1answer
24 views
RSSI stop sketch on a gboard (atmega)
I have this function in my code and works fine (it returns a valid value, I put this value into a int variable outside function), but when end the function (or continue the code), my sketch ...
3
votes
2answers
120 views
Using Arduino for Industrial process
I was wondering if the Arduino is applicable for Industrial monitoring, I want to make a real time status of the presses in our company. I haven't seen or read much about people using Arduino at an ...
1
vote
1answer
25 views
Touch the Neopixels
I want to create a game using the individual LED "pixels" in a Neopixels 8x8 panel as a game pieces. Any ideas how I could add a touch event to each pixel?
1
vote
1answer
29 views
Burning a UNO bootloader into a NANO
I bought some cheap Arduino Nanos from ebay, but the watchdog does not work in them.
So I removed their old bootloader and burnt a new Nano bootloader from the Arduino IDE. Same problem, the watchdog ...
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votes
1answer
37 views
How to make an arduino wifi repeater?
I am trying to make a wifi repeater. My router's signals don't come to my study and instead of buying a proper wifi repeater I prefer making one.
I want to learn how to make a simple wifi repeater ...
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0answers
22 views
How to use “enum” within Arduino IDE? [duplicate]
When I try to write a enum function it looks like arduino IDE does not recognise it.
Any suggestion on how this works?
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1answer
28 views
snprintf crashing my program
I have to admit that I can't really use this function.
I'm trying to format some json but it crashing all the time my arduino:
char response[300];
tmp = "123";
snprintf(response, 300, ...
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votes
1answer
25 views
Which battery should I use to power arduino+motor shield + two 200 RPM (3.6V/1.5A)motors
I am using two motors ( from old two drill machines - same kind, these are 3.6v motors ), connected to arduino + arduino motor shield seeed studio v2.
When I measured the both motors (indvidually) ...
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votes
1answer
57 views
Arduino TCP communication with android phone
I am trying to communicate Arduino UNO with android phone, What I trying to is
1) android device post a string to arduino
2) arduino post a integer to android
So far I can post message from ...
2
votes
1answer
99 views
How to add hysteresis to threshold values?
This code compares the analog input value against two thresholds, having three voltage regions. Then it will turn on an LED according to what region the read voltage is in.
The problem is that when ...
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votes
0answers
15 views
can you send analog voice commands across an xbee coordinator to a router which is then picked up and visualised via an arduino [closed]
if anyone can help id appreciate it thanks sean
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votes
2answers
310 views
Problem to upload code
I tried to upload example code form arduino software and got error below. Two arduino attach with my computer running windows8.1. And These arduino using port 3 and port 4. The arduino using Port 3 is ...
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0answers
36 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: ...
0
votes
1answer
30 views
Timer1 arduino makes Serial not work
Running the code below, when I send any character in the Serial arduino is not printing "a" back. I think it's something wrong with the timer1 code but it should work cause this code was given by my ...
2
votes
1answer
33 views
Continuous Servo not setting speed correctly
I have two continuous servos connected to my Uno, and I'm running this code on it:
leftServo.write(91);
rightServo.write(102);
delay(3000);
leftServo.write(112);
rightServo.write(81);
delay(3000);
...
1
vote
0answers
35 views
Is this a 3.3V to 5V logic level converter? [migrated]
I am trying to interface an optical mouse sensor (OM10B) with an Arduino Uno. The sensor is 3.3V and the Arduino runs at 5V, but also has the 3.3V source. I found this very detailed homepage , where ...
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0answers
17 views
Interfacing accelerometer LSM303DLH with Arduino UNO using I2C
I am trying to connet a tri axis accelerometer LSM303DLH to arduino UNO using the libraries taken from the following links (https://github.com/adafruit/Adafruit_LSM303DLHC and/or ...
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0answers
16 views
DFRobot Bluno + Relay Shield
I'm a new to all things electronics and I'm having trouble using a DFRobot Bluno V2 with a DFRobot Relay Shield for Arduino V2.1. For testing purposes I've done the exact same circuit as represented ...
0
votes
1answer
36 views
How to return a message when calling by a TCP connection?
I am working on a communication between android and arduino board.
The android make a TCP connection with the board and successfully send some string to the board.
The problem is , there is a int ...
0
votes
1answer
78 views
How to make the motor car move left-forward / left-backward/ right-forward/ right-backward
I recently using the arudino uno to make the motor car. And I successfully make it move forward / backward / left / right
void forward(void)
{
analogWrite(EA,254); //speed 0 - 255
...
