I currently have a HC-06 Bluetooth device connected to my Arduino Mega 2560 in order to receive strings sent from an Android device. With the HC-06 on Serial 0, I am receiving the data without error …
I wan't to controll some lamps by using bluetooth. I have a bluetooth module installed and I'm sending command messages using my android phone. The Message is a string that contains the values for ...
When a wire with no resistance is connected to the terminals of an ideal battery, will a current exist in the circuit?
If a capacitor is added to the circuit, will it be charged by the battery or will …
I would like to power my Arduino Yun board with the following battery:
Arduino Yun has a VIN pin that represents the input voltage to the Arduino board. The official documentation says:
OK, before I start I know that there is significant difference and that the Arduino Uno is not designed to run off button cell batteries especially to run both the board AND its load but what if the …
I have zynq board ( not the zedboard), it doesn't have all the peripherals of zedboard.
I am facing some problem while booting the linux on zynq with my new BOOT.bin.
When I used to put the sdcard in …
#define MAX 50
const int LED1 = 2;
const int LED2 = 3;
const int LED3 = 4;
const int LED4 = 5;
int old_b = 0;
int counter = 0;
I'm developing an Arduino project (but this is not important). For this project I need to communicate (radio control) to my Arduino from my PC. The idea is to send the message or the instruction to …
This answer gives a great explanation of how surface charge builds up to force the current to move perpendicular to the wire: http://physics.stackexchange.com/a/102936/41086
However, it fails to ...
I am trying to create a pattern that will turn one of the Arduinos ports on and off. However, after about 2 on/offs it gets stuck on and won't turn off unless I unplug the Arduino. I have tried many …
I am trying to make an Arduino Piano with analog sensors as keys. However, all of the keys produce the same tone, the tone produced doesn't appear anywhere in the program. When multiple keys are ...
I am trying to perform write coil operation.In below code i can read data But i could not able to performs write operation. SInce my code size is big i am pasting part of code. Give me simple example …
Now that the music festivals are getting closer this summer, I thought I would build some low-power dancefloor lights for my camp. The circuit I've found is really simple, but unfortunately I am not …
Going back to transformers after some years I realize they hide a possible missconception I'm not sure I really understand. It is not easy to find a full derivation of the well known relation ...
I'm writing a library for a Arduino project, and i have been struggling with this code for quite a while now. I keep getting this error: "motorSource.cpp:4: error: 'motorStyring' has not been ...
I have connected an arduino gsm/gprs shield on arduino uno. I want to send the data to a server(ip & port). They are not HTTP requests.
What are the appropriate AT commands sequence to send data …
I would like your advice relating to using the Arduino IDE and avrdude to program an ATmega328 which is preloaded with an Arduino bootloader. I am using a USB to TTL-serial breakout board based on an …
I'm making my own laser tag and I was checking out existing open source solutions.
The MilesTag protocol uses 600us as the basic pulse length. This however limits the maximum rounds per minute to ...
I'm sending strings over Bluetooth to an Android device.
I have an Arduino board with a Synapse SNAP RF100 module and a RN42 Bluetooth module connected to serial ports.
The data is read from the ...
How am i supposed to connect a transmitter to my raspberry pi "pins"?
I have bought a transmitter online
But i have to wait about 10-15 days before its delivered, so i want to make sure that thats …
I'am working on a Kinect User Interface gesture recognition.
I also used an arduino with eight leds connected to the digital pin. The leds simulate an output (like opening the doors).
So I used the …
Some of you may know this experience (Grape + Microwave oven = Plasma video link):
take a grape that you almost split in two parts, letting just a tiny piece of skin making a link between each ...
I am trying to send the data from a bunch of sensors to a web server that I've written using Node.js. I have written the following code for my Arduino Sketch but it doesn't work. Can someone help me …
GPIO User Space App describes user space application to test the GPIO.
Another related link is Linux GPIO Driver.
This would be running on a xilinx zynq board having an ARM Cortex A 9 processor.
I am running Debian 7 (Linux Crunchbang) and wanted to use The Arduino IDE to program my Arduino UNO. To do that I installed the package arduino. When I started the Arduino I was asked to add my user …
I'm trying to hookup a common anode 4-digit 7-segment LED array to my Arduino via a Max7221 IC.
Here's a hard-to-see (sorry!) pinout for my LED array (my LED array is the bottom common anode one, ...
I have a 7 segment led display with 3 digits (BT-M512RD-DR1
) and Valueline Launchpad MSP-EXP430G2
I connected LED display according to this answer and here is my version of the sketch
But I am …
I'm making mobile app in android for room automation control via bluetooth ( android -> bluetooth -> arduino -> devices ). I want to make few sceneries, for example when I wake up at 7am I want to get …
I want to transmit a DMX signal over a Xbee RF module. I came to realize that sending 1 Universe of DMX can be problematic.
Looking at the Open DMX page we see that the computer's DMX information is …
I'm going to control my Canon DSLR with an Arduino board.
How can I get current camera "busy" state before firing then next shot so I will keep waiting until it will finish all its jobs?