The Arduino Uno is the most common of the Arduino boards. It is based on the ATmega328 microcontroller.
0
votes
0answers
6 views
How to connect an industrial sensor to Arduino Uno?
I want to use a sensor to read pressure in rooms. But sensor like MPX series isn't capable to read air pressure change under 100 Pa. So I want to use industrial sensor like Dwyer 607 Series, and dont ...
0
votes
0answers
6 views
Noise from the I2C - digital potentiometer
I have a digital potentiometer controlled by Arduino, connected via the I2C bus (it controls volume). For some reason it beeps just by itself, even when no audio is playing. I have checked that it is ...
0
votes
0answers
15 views
Does Serial.print introduce something else than Serial Transmission?
I'm using an Arduino UNO to create a scale that can weigh and count items. However, I've come into a weird phenomenon when getting measurements
When I boot the scale up to work on it's own, there ...
1
vote
1answer
6 views
Using multiple HC-SR04: sharing trigger pin and interference between HC-SR04
If I have four HC-SR04 detectors, can they share the same trigger pin on the Arduino? This would reduce the number of pins needed from eight to five.
Even if they can share the same trigger, maybe ...
0
votes
1answer
19 views
How to set limits in Arduino of pin x to remain in high state?
I am working on this thermostat, which has a predefined int that sets pin high and low. But now I want to give it a particular range on which the pin 7 stays high, let's say from 24°C to 26°C, because ...
-2
votes
1answer
28 views
How many projects can make at once using arduino uno
I want to make a trash level monitoring and a talking bin using one arduino uno at the same time.
Can i do it.
Pl tell i have a exibition at school.
I want to make a smart bin
0
votes
1answer
18 views
Will M2.5 screws fit the holes in the Arduino Uno?
I'm developing a sump pump monitor/alarm setup that will include an Arduino Uno as well as a Raspberry Pi. Both boards will be mounted to a piece of wood. The Arduino is designed to take M3 screws, ...
-1
votes
1answer
24 views
Make Arduino return information from a website to a display
So I want my arduino to return the number of total-views of a youtube channel from the website socialblade.com to a digit-segment.
this is what I want:
I want to know who many total views the channel ...
0
votes
0answers
22 views
Arduino TTL Pulse Limitations?
I have an Arduino board and would like to know of the limitations and the possibility of creating a TTL pulse in the microseconds range (at least 200microseconds). This TTL pulse would be the signal ...
0
votes
1answer
15 views
Arduino + UltraSensor - Serial Monitor outputs garbage
I am trying to connect an HC-SR04 to an Arduino Uno. For some reason when I run this code on the serial monitor it outputs wingdings in a straight line.
ýòøÿüÿøÿüòý÷ÿ÷ýÿÿúýÿýúÿòý÷ûòûòû÷ýÿøÿøÿÿ÷...
-1
votes
0answers
10 views
How to use custom components in Ardulink?
I am trying to control 3 motors with my computer using Ardulink, but there aren't any tutorials on how to do this for beginners. I don't even know where to start. All help is appreciated, thanks!
0
votes
0answers
8 views
Kaysan Stepper Motor ( Motor Shield or Easy Driver ) ? How to stop motor after rotation?
I am currently working on a project. The project is about rotating some sort of pipes. I have not figured out where to place the electric motor but all I am working on now is setting up the circuit ...
0
votes
1answer
17 views
Opening a two-way connection between arduino and web server
I'm using an arduino to send sensors' data to a web service, however sometimes I need the web service to trigger the arduino at a certain time (known at the web service).
So i was thinking of making a ...
-1
votes
0answers
17 views
Controlling servo via keypad [on hold]
I want to connect 2 continuous rotational servos with a 4*4 keypad, and the keypad determines the angle each servos goes to.
Could you help me with the code please?
-1
votes
0answers
12 views
MPU6050 not working with Arduino UNO R3
I am trying to build myself a Self Balancing Robot using Arduino UNO R3, MPU 6050 GY-521 and L293D Motor Driver Circuit. I am also using I2Cdevlib for MPU Values. Initially in order to check whether ...
-1
votes
0answers
13 views
Arduino OV5642 register setting
I'm trying to implement with OV5642 arduino cam.
So I'd like to get the 1920x1080 raw image as the below register setting.
write_i2c(0x3103, 0x03);
write_i2c(0x3008, 0x82);
...
0
votes
0answers
19 views
Core libs from Arduino are not found when external libs are moved to project location
I have an Arduino project in Atmel Studio.
Some of my external libraries are on the folder:
C:\Users\waas\Documents\Arduino\libraries
The project compiles.
But now, I want to have everything on ...
0
votes
3answers
65 views
Measure the duration a pin is in a HIGH state
I'm struggling with getting the button configuration. Simply, I have a LED controlling setup for a button to increase its brightness when pressed. However, I would like to have it setup like this:
...
0
votes
0answers
14 views
TPS/MAP calculation problem
In my recent project, I have to create TPS/MAP table, which is provide value of LOAD.
Here, it is my table. You can see two value of LOAD which is separate by /. (TPS LOAD / MAP LOAD)
But now here ...
2
votes
3answers
35 views
Brushless motor + ESC with Arduino question
Sorry in advance as I'm still a rookie with Arduino projects. My goal is to use an Arduino Uno 3 to create an inexpensive drone/plane project.
Here are my materials and my set up:
A2212 1000kv ...
0
votes
1answer
30 views
Serial Connection
I was trying to communicate with my arduino uno over the serial connection from the USB. Connecting to it is usually not a problem, but what buggs me is the first transaction of the data... No matter ...
0
votes
0answers
37 views
Use Arduino with Angular2 and Meteor?
Can I use Arduino with Angular2/Meteor?
I want to do a simple Arduino project with it...
I have searched for it and find out that there are some generators for it, but it is very difficult to use it....
1
vote
4answers
95 views
Is there any way I can light up a candle with an Arduino?
I want to make a candle flame light up triggered by a microcontroller. Is it possible? I only want to light it up. Not turn it down. Moreover, this is for a one-time use so the candle burning down and ...
0
votes
2answers
28 views
Different Functions using 2 buttons
I'm currently learning Arduino stuff. So right now I'm trying to create a arduino app that will use buttons, leds and rgb
So I have 2 buttons, 8 leds and a RGB. The first button is the function ...
0
votes
2answers
23 views
How do I specify a particular pin to use as output for the Print class?
all.
I'm attempting to write a class that inherits from the Print class. I only need serial output.
However, I'm having difficulty locating any reference on how to specify which pin on the ATMega ...
0
votes
1answer
21 views
How to do weigh scale zeroing (tare weight)?
I'm using the sketch below for a weighing scale. The sketch prints out the load-cell voltage just fine. I can't figure out how to let the scale run a couple seconds to stabilize, then use the current ...
0
votes
0answers
13 views
Dht11 sensor always returns 0
I have a Dht11 sensor and an Arduino uno board. It seems my sensor is broken, because it always returns 0 value, even if I download a pre-coded sketch. How could I be sure it's broken (and so buy ...
0
votes
0answers
20 views
GSM Modem returning message without AT Command
I am trying to receive message from gsm modem with arduino uno with following code:
#include <SoftwareSerial.h>
SoftwareSerial mySerial(2,3);
void setup()
{
mySerial.begin(9600);
...
-2
votes
0answers
35 views
Adafruit ESP8266
I am getting this error
section attribute not allowed for 'Pchr'
typedef const PROGMEM char Pchr;
It compiles with arduino boards, but not with the adafruit esp8266 board.
How to solve this error?
0
votes
0answers
33 views
Controlling brushless motor using arduino and esc gone wrong
I recently bought some brushless motors (2200kV) and some ESCs (30A). Now I try but I can't control a motor with an arduino uno. The problem is that when according to my code the speed should be ...
0
votes
0answers
41 views
Problem with receiving data from Arduino via HC05 sent by Java
I want to both send some sensor data via Bluetooth (HC05) and Arduino to Java and I also want to send some command data via the same Bluetooth and serial port to Arduino.
I've managed to do the first ...
-1
votes
0answers
13 views
how to make no strings in DHT library
I want to get rid of the string part of the DHT reading. I normaly get
Tempature: 20.00
Humidity: 89.56
The code:
include "DHT.h"
define DHTPIN 2
define DHTTYPE DHT22
DHT dht(DHTPIN, DHTTYPE);
...
0
votes
1answer
24 views
Why do the LEDs visibly flicker?
The aim of the project was to be able to show two "kinds" of LEDs in a 8x8 single color LED matrix. I used a MAX7219 chip to drive the LEDs using my Arduino UNO R3 as the driver (with the usual ...
9
votes
3answers
282 views
Powering Arduino Uno from 5V pin, what exactly is the voltage range/tolerance?
I want to bypass the onboard regulator and use the 5V pin to feed arduino with external, regulated source.
Everybody just keeps saying regulated 5V, but how precise does the regulation need to be ...
0
votes
1answer
22 views
Ethernet Shield 2 data to PHP server doesn't work
I am trying to send data via GET to my PHP server from my Ethernet Shield2.
This is part of my sketch:
char myserver[] = "www.myserver.com/";
if (client.connect(myserver, 80)) {
Serial.print("...
1
vote
0answers
21 views
Upload custom trinket firmware
I'd like to disable the trinket 10-second bootloader when powered up, so it will just begin running the program. I would still like to be able to press the reset button to re-program it.
I found an ...
0
votes
0answers
23 views
ESP8266 to Arduino 2-way communication
I am trying to get my Arduino and ESP8266 to talk to each other. I am trying to send a message from my Arduino to tell my ESP to light an LED, and also get my ESP to tell the Arduino to light an LED.
...
0
votes
3answers
35 views
Using 11.1v for a 9.6v motor
I have a DC motor that uses 9.6 volt batteries. Can I use 3 of my 3.7 volt lithium-ion polymer batteries (11.1 V) to power this motor?
Somebody please help me. I have tried 2 of the LiPo (7.4v) and ...
0
votes
1answer
29 views
Does anyone know how to connect 2 digipots to Arduino? (MCP4141)
I'm struggling with getting the code right. I'm trying to connect 2 digipots (MCP 4141) to Arduino to work separately over SPI. Has anyone got any experience with that?
1
vote
3answers
40 views
Absolute encoder vs Accelerometer for calculating angles
I've been toying with this idea for a while and after some thorough research I'm more than happy that the project is realistic. However I'm in need of some direction in terms of the sensors I should ...
0
votes
1answer
34 views
MCP23017 and Stepper Motors
I am new to Arduino and programming and I am muddling along with some tutorials, I have a little project I am working on, its basically an LCD Screen with 5 buttons a simple menu system that will ...
0
votes
0answers
32 views
Can a sketch be found if new software overwrites the library?
I accidentally reinstalled the Arduino program and can't find my UNO sketch in the library anymore. Is there a way to retrieve it?
0
votes
0answers
37 views
Arduino Uno unable to upload on Mac
I have tried everything. I spent at least 4 hours on forums and everything.
I am currently on Mac OS X Sierra. I am trying to upload anything to an Arduino Uno board. I have selected Arduino Uno both ...
-4
votes
0answers
25 views
how to connect relay and inductive proximity sensor [on hold]
i would like to know that how to connect 2ch ralay module and inductive proximity sensor (pnp NO) to arduino. and how create sketch for both?
i have an arduino, 2ch relay module, inductive proximity ...
-3
votes
0answers
33 views
How to separate message from GSM Read SMS [on hold]
+CMT: "+918892611849","","17/01/26,15:13:58+22"
#123456
How can I separate #123456 from this string?
0
votes
1answer
41 views
I2C communication, wrong response
With reference from http://www.gammon.com.au/i2c I tried the example there. However I am getting the wrong response and readings. At startup the Master will request for slave address. I should get a ...
0
votes
2answers
25 views
My servo is misbehaving
I have been trying to get my 9g tower pro servo to work and no matter what i do nothing happens. I connected the servo to the arduino with the red wire to 5v, brown to ground and orange to pin 6.
#...
-2
votes
0answers
16 views
Simple Harmonic Motion using Stepper and Arduino
I'm looking to create a Simple Harmonic motion (of the form Asin(bt+c), say, the number of cycles required are also given) of a linear stage using a stepper motor and Arduino using the EasyDriver ...
0
votes
3answers
69 views
Run 2 loop side by side
Let's say I have 2 loops LED() and IR() with a print statement in my Arduino void loop() function. Basically I want my IR() loop to be always running so that at any point in time I provide a signal ...
0
votes
2answers
50 views
Can't able to detect Square wave from 74HC14
In my recent project, I want square wave which length vary according our timing. And this square wave is take reference as a another square wave.
For that, I made Square wave with help of Arduino.
...
