All Questions
0
votes
0answers
3 views
I²C between 2 Arduinos sends additional receive event
I hooked up two Arduino Nanos with I²C, using 3 wires between GND <-> GND, A4 <-> A4, A5 <-> A5Ω and 1kΩ pull-up resistors on A4 & A5.
When I use the following code to communicate ...
1
vote
1answer
9 views
Arduino on breadboard, and then soldered using a board made on Eagle but won't work
So I'm looking to create an arduino clone to mount on one of my robots. I started off making the arduino on a breadboard, using the instructions found on Arduino's own website and I succeeded. It ...
0
votes
1answer
4 views
Pro Mini Fuse Repair
It looks like I broke my Arduino (Compatible) Pro Mini board using AtmelStudio to change the fuses. I was having trouble with speed and using some basic sketches. For example, the LED blink was on for ...
0
votes
0answers
4 views
RTC interrupts and coin batteries
Summary
I'm having problems with my RTC draining its coin cells quickly - fresh batteries are drained in a few months. The RTC is set to signal an interrupt every 5 minutes, and I wonder - if there ...
0
votes
0answers
7 views
Arduino UNO and Arduino Pro Mini and NRF24L01+ setup not working
I have already tried possibly all the libraries (RF24, RF24(maniacbug), RadioHead, Mirf) available to with the NRF24L01+, to no avail. I might end up returning the modules I bought or getting them ...
0
votes
1answer
16 views
Can you use both 3.3v and 5v
Can you use an Arduino EtherMega's 3.3v and 5v pins with two sensors, one requiring 3.3v and the other 5v and a sketch that combines both?
0
votes
0answers
12 views
Getting NaN error in Processing when Xbee is used and trying to create a popup window.
I am trying to get data from D6T Omron thermal sensor. It works fine with both Arduino and Processing when I connect it to pc directly. However, it seems to always cannot read my last data in my data ...
0
votes
3answers
22 views
Is it possible to make 4hz readings with the DS18S20 temperature sensor?
My current code that doesn't convince me:
#include <OneWire.h>
int DS18S20_Pin = 3; //DS18S20 Signal pin on digital 3
unsigned long startTime = 0;
#define MEASURE_PERIOD 250
//Temperature ...
0
votes
1answer
9 views
Funduino Uno with 5V 1A power supply?
Can I use a "Funduino Uno" arduino with power from a power bank with DC 5V 1A output?
0
votes
0answers
6 views
Keyboard input arduino speed
I have an Arduino clone of a Leonardo and I was just wondering how many keyboard commands I can send to the computer per second via USB. I'm not talking about the delay between send and receive ...
0
votes
1answer
13 views
nrf24l01 (8pin) + adapter board (10pin) oops?
I just got my first arduino boards and have been learning the basics (so I know very little). I got the 2.4GHz NRF24L01+ (this one: NRF24L01+) and along with it a breakout board (this one: NRF24L01+ ...
1
vote
1answer
16 views
Maximum potentiometer resistance
I want to hook up a potentiometer to my arduino (Leonardo) as a voltage divider with the middle pin to an analog pin. I want to use the highest resistance to save power. I looked on the datasheet and ...
0
votes
2answers
13 views
What is the best way to attach TMP36 sensor to the copper coil?
I am very new to this site and this question may not be strictly related to Arduino, but I do small Arduino project which needs to measure the temperature of the copper coil using TMP36GZ sensor.
...
0
votes
0answers
8 views
SM 130 RFID reader, with Arduino Uno. Trying to read RFID passive tags on Arduino version 1.6.7
I am trying to read passive tags using these two devices and an arduino uno, for a class project of trying to make my own doggy door. However, all the code I have been able to find is out of date, ...
0
votes
1answer
12 views
Arduino Nano - Unknown USB device
I just bought an Arduino Nano v3.0 (compatible? +- 5$) and I cannot connect it to my computer (Windows 8.1 64bit, Arduino IDE 1.6.8 installed).
The Arduino was bought as a clone but shows ...
0
votes
0answers
18 views
Sampling Rate of Arduino Uno
It might be a stupid question but, I am currently using Arduino Uno with the 16MHz processor, what is maximum sampling rate of data available to me if I want to read data of a sensors such as ...
1
vote
2answers
17 views
Port Manipulation - fastest implementation
I'm working on an Arduino program but am getting bogged down on what is the 'correct' implementation. I understand that multiple versions may work, so for my needs the 'correct' version will be the ...
2
votes
1answer
16 views
How to design and debug a custom I2C master-slave system?
How to proceed, when in need of a custom I2C master-slave system?
What are the design criteria to apply?
What are the debugging tools one can use to troubleshoot problems?
0
votes
2answers
30 views
How can I use my old cellphones camera on my arduino robot?
The pins are so small I dont know which pin needs to go to the which pin socket and if t's compatible or not. I have the selfie camera of Xperia Z phone and a Arduino Uno r3.
0
votes
0answers
20 views
arduino quadcopter freezing while reading MPU6050/RC Receiver
I am trying to build an Arduino Flight controller. I have an MPU6050 (Gyroscope/Accelerometer) on board that is helping me configure my stabilization software. I also have my ESC's, and receiver ...
0
votes
0answers
31 views
problem with my arduino project
I am making a smart bin which automatically sense (with the help of IR sensor ) and dispose the trash by moving with help of DC geared motor 12V 60 RPM and it also detects for obstacles with the help ...
2
votes
2answers
81 views
SDA/SCL pins Arduino Uno
I am trying to figure if SDA and SCL pins from Arduino Uno is a TTL or a CMOS technology. I am not able to find this info anywhere but regarding it is a I2C protocol it does make sense to be a TTL ...
0
votes
1answer
21 views
What are some “must-have” sensors or shields for an Arduino robot or motor?
I am starting to learn Arduino and wanna make some projects.which components will I have to buy?please help me.
1
vote
1answer
17 views
What is the necessity of “Prototyping Shield” for an arduino UNO R3?
I just want to learn arduino and make some small projects.But in beginner starter kit there's a part named Prototyping Shield .Is it necessary or will it help me?
0
votes
1answer
21 views
How to use a digital RGB LED Strip?
I know this is probably a little bit basic but I need SERIOUS help with using my new led strip. You can see here the type of strip I have, and the packet.
It's difficult because it looks slightly ...
0
votes
1answer
11 views
NEO 6M GPS SPEED
I am doing a project using NEO 6M GPS with my arduino lilypad.
I programmed it already, and it's working well except of the speed. I get stuck on fixing this, I wonder why the value is never getting ...
0
votes
1answer
20 views
Version of esp8266 to connect display and button
Which version of ESP8266 module (e.g. ESP-01, ESP-02, etc.) should I chose to connect it with display (OLED) and button?
I want to create some kind of old school pager.
0
votes
1answer
12 views
What is the necessity of “Prototyping Shield” for an arduino UNO R3?
I just want to learn arduino and make some small projects.But in beginner starter kit there's a part named Prototyping Shield .Is it necessary or will it help me?
0
votes
2answers
44 views
Project 2: Arduino controlled spaceship interface
The circuit diagram attached shows that the switch is open. Yet, the LED connected to pin 3 of the arduino board lights up.
I don't understand this - the circuit is open, so why should pin 3 light ...
-1
votes
1answer
17 views
Beat 1 LED light is always on - should turn off
/**************************************/
const int lowestPin = 1;//the lowest one attach to
const int speaker = 13;
int ts = 4;//how many beats you want
int count = 1;
const int keyPin = 11;
const int ...
0
votes
0answers
6 views
NEO GPS 6M connecting to Lilypad Arduino
I'm working on a project that has something to do with receiving gps data from the satellites. With this, I've used GPS NEO 6M with an arduino Lilypad for wearable purposes.
I've already tried using ...
1
vote
2answers
18 views
Serial Data Formatting not Correct?
I am writing two Arduino Uno programs. One is a remote with a joystick and the other has five LED's indicating which direction the joystick is pointing. They are Bluetooth, so everything is sent and ...
0
votes
0answers
19 views
Error with libraries after setting up Code::blocks to work as an arduino IDE
I followed this guide: http://arduinodev.com/guide-to-arduino-development-environment-codeblocks/
Everything seemed to work until I compiled the example code:
#include <Arduino.h>
/*
Turns ...
0
votes
0answers
11 views
Sim900 data logging through Sparkfun
I've been trying to upload data to data.sparkfun's servers using HTTP commands, but I've hit errors every time I try.
This is my code:
#include <String.h>
void setup()
{
...
1
vote
2answers
19 views
Using Arduino and Xbee at the same time
I have 2 Arduino Uno's, 2 Xbees and 2 Wireless Proto Shields. The first setup has a humidity/temperature sensor (SHT21P) and it writes data to serial and it works (i've tested it). Now I have the ...
0
votes
0answers
11 views
Arduino Mega2560, Ethernet Shield & OV0706: “Camera not found”
I want to make a picture with the OV0706 that saves the picture to the SD card. I'm using the Arduino Mega2560, Ethernet Shield (with SD slot) and the OV0706 (this one: ...
0
votes
2answers
31 views
What does serial monitor send with 'Both NL & CR'
There is something I don't understand about serial monitor.
As far as I know the Newline option is \n.
The Carriage return option is \r\n.
But does that make the Both NL & CR option \n\r\n?
0
votes
1answer
48 views
Why does this code show me a lot of space?
I want to make a 4hz reading of GSR and temperature, in the following format for every second:
697,20.8744
696,20.86521
695,20.8653
699,20.8777
The print, in python, would be print(GSR+","+Temp)
...
0
votes
0answers
6 views
Which tft works on both Arduino Uno and Raspberry pi
Ideally I'd like a 2.8 inch and it to be touch screen.
But most of all I'd rather it work on both boards without much hassle.
0
votes
1answer
17 views
Random numbers being printed back after entering data
Good evening/morning,
I am currently working with an Arduino Micro / Linduino and making a program based on a lot of switch statements to execute certain functions that will be passed to a ...
0
votes
1answer
23 views
“missing filename” compilation Error
I've recently got back to my Uno. I tried compiling my program and got the following error:
Arduino: 1.6.6 (Windows 8.1), Board: "Arduino/Genuino Uno"
avr-g++: error: missing filename after '-o'
...
0
votes
1answer
18 views
Did I fry a Sainsmart 1602LCD (not shield, just LCD), HD44780 compatible
Each new circuit I build, I seem to make every possible mistake, including inverting 5V and ground.
I did that precise mistake on this 2x16 Sainsmart LCD. The backlight definitely works, but is the ...
0
votes
0answers
7 views
receiving sms by arduino with wavecome to control the led with sms
how to code the arduino program for turning on / off thhe led if we use wavecome modem fastrack on the arduino, please help me i'am in a trouble about this. Please
i dont understand about how to ...
0
votes
1answer
14 views
radio wave generation using arduino
const byte ANTENNA = 9;
void setup()
{
// set up Timer 1
TCCR1A = bit (COM1A0); // toggle OC1A on Compare Match
TCCR1B = bit (WGM12) | bit (CS10); // CTC, no prescaler
OCR1A = 9; ...
0
votes
1answer
19 views
How to load Atmega328p 8mhz board using board manager
I need to load the Atmega328p 8kHz board definition using the board manager and can not find a way. Any help will be appreciated.
0
votes
2answers
57 views
I²C only works when I short-circuit my Arduino
I'm trying to connect an Arduino Nano with a Raspberry Pi 3 via I²C.
This is the small test-program I found and used for I²C.
#include <Arduino.h>
#include <Wire.h>
void setup() {
...
0
votes
0answers
15 views
Write to file the reading of an external EEPROM?
In the web there are lots of guides about how to read the raw content of external EEPROM memories with Arduino and the Wire.h library. But how can you write that to a file? The idea is to replace an ...
0
votes
1answer
32 views
serial communication dead slow after a while
I'm workin on a node for blender to control an arduino. I notice it goes really slow after a while so I isolated the problem.
It is good in maintaining 60 frames a second, then after around 40 seconds ...
0
votes
0answers
8 views
Send Newline / Carriage return with python
With the Serial Monitor I have the Newline option:
How can I send the same using python?
I tried:
30\r\n
30\r
30\n
import serial
ser = serial.Serial('COM3', 115200)
while True:
...
1
vote
1answer
19 views
No sketches will upload to Arduino Uno board; says “access denied”
I'm using an Arduino Uno board with an HP computer running Windows 10 and IDE version 1.6.8. Arduino was working fine for me until a few days ago, when (and I suspect this is the root of the problem) ...
