All Questions
0
votes
0answers
10 views
Arduino “piston” device
Is there any compact piston-like devices on the market that can apply pressure safely various parts of the head? I can further expound if needed.
The ideal size would be something within the 1-2 ...
0
votes
0answers
13 views
Control linear actuator with ROS and Arduino
I would like to control a linear actuator with ROS the same way ROS can control a servo like this
ros tutorial for 1 servo connected to an arduino. ...
0
votes
2answers
15 views
how to change variable when a button connected to pin 2 is pressed
Hi i am writing a code where, i have to switch a variable called toggle from 0 to 1 to 0.... every time the button is pressed (the button is on a 2 pin). I am a little lost as I am new to arduino need ...
0
votes
2answers
22 views
arduino project for c programming language
i am a student from 2nd semester BCA (Bachelor in Computer Application). My group need some project for presentation from c programming language so i thought of using #ARDUINO project for our ...
2
votes
1answer
27 views
Any chance of repairing Mega 2560?
So i decided it would be a good idea to flash a firmware onto my mega 2560 for a project. I ended up flashing the wrong side of the ICSP header (one near the usb plug/ M16U2) and killed my arduino for ...
0
votes
1answer
24 views
Detect closed shutter
I want to controll some ambient lights in my living room.
Therefore, I got some 433mhz outlets which can be turned on or off with an remote, a 433mhz transmitter and receiver on the arduino.
The ...
1
vote
1answer
7 views
Enternal Analog Reference mode not compiling in Arduino + Intel Galileo Gen 2
I am trying to use external voltage reference in Intel Galileo gen 2 operating in Arduino mode.
So I created a setup code like this:
void setup() {
// We'll send debugging information via the ...
-3
votes
2answers
28 views
How do you make the arduino go forward,backward and stop using Infrared? [on hold]
Please give me a code and diagram use makeblock i.r sensor V2.1 and makeblock remote
0
votes
1answer
18 views
How to fix baud rate when hardware capacity has a low limit?
I have a transmitter(simple 433 MHz transmitter) connected via digital pins on the Arduino. The receiver is connected to another arduino.
Now, I kept that pin on HIGH for 1 second, and it transmits ...
0
votes
1answer
12 views
Arduino Pro Micro Analog Pinouts
I have the Arduino Pro Micro and I would like to use all the analog pins that I can on it.
It currently looks like it has a total of 9 Analog pins that can be used.
A0, A1, A2, A3, A6, A7, A8, A9 ...
3
votes
2answers
44 views
Basic Serial Transmission Protocol
I have a small piece of code here that I hope to run on Arduino. Basically what this code is doing is, it takes a nibble from the user, appends a startbit to it, and transmits the code through a ...
2
votes
3answers
33 views
Arduino coding of producing frequency
Im new here. Anyone that could give a code or sample that would generate I wanted to use a frequency in range of 35k-43kHz. Please help me.
1
vote
0answers
16 views
Arduino bootloader burning error on atmega328p?
I am designing a circuit in which I have Atmega328P MCU and other components. I need to burn the arduino bootloder into the MCU. So I used a USBAsp programmer, and connected the MISO MOSI SCK RST of ...
0
votes
1answer
23 views
Can send AT+ commands, but can't upload sketch to ESP8266 via Arduino Uno
Connected a generic ESP8266 to an Arduino Uno.
I can send AT commands fine and generate a normal response, but cannot upload sketches to the ESP8266. I have "Generic ESP8266 Module selected as the ...
0
votes
1answer
13 views
Connect GPS module accompany with GPS antenna SIM39EA to Arudino Board
I bought GPS module accompany with GPS antenna SIM39EA online.
I have Arduino board, it has 3 ground pin, one Vcc and two input/output pin.
I want to know how can I connect this module to Arduino ...
0
votes
0answers
19 views
computer admin Arduino UNO using adafruit CC3000 wifi module
I want to use the CC3000 wifi module to communicate between a C# software on computer and Arduino Uno board.
The computer will send command to the board:
(for example):
get Log
the board should ...
0
votes
0answers
22 views
Sketch wil not start with external power source
NOOB Question: when my UNO is connected to an external power source it will not start running the uploaded sketch. The Arduino web site says its because the RX pin is not connected and then gets ...
0
votes
1answer
20 views
Help with socketIO Example
I'd like to get a TCP based connection from an arduino to a node.JS server. I found an example, I've tried to run it but its throwing the errors below, would appreciate any help.
Error Messages
...
2
votes
1answer
15 views
How to make an Arduino USB programming circuit?
I am designing a PCB in which I am using the MCU used in Arduino UNO which is Atmega328P and some other components as per my project requirements. I have almost designed the circuit but I am confused ...
0
votes
1answer
33 views
Interrupt not firing on motion
I'm trying to get MMA8452Q to trigger an interrupt when motion is detected and wonder if I'm missing something very obvious here.
So I setup CTRL_REG4 to 0x0B with
void MMA8452Q::setupISR()
{
...
0
votes
2answers
29 views
Identical statements, different outcome
First a little background on me and my project. Most of my programming experience is with PHP and javascript. I have just recently started looking at C and C++ for this Arduino project. My project is ...
0
votes
1answer
25 views
RGBs, photoresistors, and delays
I am having a little trouble with a program of mine. My circuit consists of (mainly) an arduino UNO, two RGB LEDs, and a photoresistor. My current code(programmed in c#) operates the hardware as so: ...
0
votes
2answers
34 views
Reading from a KY-040 rotary encoder with Digispark
I have a rotary encoder KY-040 connected to a Digispark like this:
CLK go to p0 and and DT go to p2, SW is disconnected for now (it's just a button).
I did everything like the instructions here: ...
0
votes
2answers
29 views
Standalone Arduino
I have an Arduino Uno and I am using arduino 1.0.5 IDE. I followed he procedures for bootloading an atmega328P-PU on a breadboard using an Arduino Uno from the link:
...
0
votes
0answers
16 views
A/C doesn't detect IR codes sent from Arduino
I have an IR receiver and an IR LED I got from a kit (I don't have the datasheets for them).
I uploaded an Arduino sketch to record my A/Cs IR codes. Those were NEC encoded 32bit integers.
After ...
0
votes
1answer
13 views
Trying to get my MPU chip to work
I'm new to Arduino and I'm trying to get my MPU 6050 chip to work. The simple code runs fine but when I use the downloaded example I get the following:
Arduino: 1.6.5 (Windows 7), Board: ...
0
votes
1answer
11 views
Dagu Mini Driver Board Issues
I have the Dagu Mini Driver board which is based on the atmega8 and I uploaded the code here. It uploaded perfectly and I wired 4x AA pack to the battery terminals making sure to observe polarity.
I ...
0
votes
2answers
18 views
Measure Vcc using 1.1V bandgap
For an battery driven application I want to measure the Vcc (using an Atmega 32u4). That is my code:
int readBandGap() {
ADMUX = (B01 << REFS0) // VCC
| (0 << ADLAR) // ...
-3
votes
0answers
36 views
How would I use recursion to create an array of extra change($100, 50, 20, 10, 5, 1) MATLAB [on hold]
How would I correctly make a recursive call within every if-statement to get the change of money? I'm specifically focusing on the "change" variable.
TEST CASE ...
2
votes
1answer
56 views
How do you use SPI on an Arduino?
With reference to the Arduino Uno, Mega2560, Leonardo and similar boards:
How does SPI work?
How fast is SPI?
How do I connect between a master and a slave?
How do I make an SPI slave?
Please ...
0
votes
1answer
21 views
Edit code on a Sainsmart Uno R3
I have a Sainsmart Uno R3 and I can't seem to edit the code. I have it on the Device Manager but it keeps on saying: "Unknown device". Therefore I can't edit this code built in to the board.
My ...
0
votes
1answer
31 views
How to connect arduino directly to mysql server using the url?
I started a project with my arduino MEGA2560 that get some values from sensors. I'm using Mysql Connector, https://launchpad.net/mysql-arduino , and this lib allow me to connect to a server using the ...
0
votes
1answer
22 views
Just sanity-checking a concept… poor man's self-monitored alarm system
If I wanted to throw together a simple burglar-alarm system that had wireless sensors talking to an Arduino (which would then send me an SMS message via cellular shield as a silent alarm telling me ...
0
votes
0answers
19 views
Printing bitmap image from thermal printer using Serial input
I want to print Bitmap image from thermal printer, but image data is from Serial Input. But I am not getting valid print. What wrong i am doing ?
Here is code i wrote
#include "Adafruit_Thermal.h"
...
0
votes
3answers
48 views
Arduino code on Raspberry? [on hold]
Is there any way to run Arduino sketches on Raspberry Pi (basically on Raspbian)? I have several projects that work on Arduino and I would like to run the exact same stuff on my Raspberry Pi. Is there ...
0
votes
1answer
24 views
help with 7- segment display
I'm playing with a 7 segment display.
The following works on my breadboard:
5V -> 330 Ohm Resistor (same row, row 9)
330 Ohm Resistor -> Com Port (row 9 to row 15)
h led (the dot/row 17) -> ...
-3
votes
0answers
25 views
I'm new with arduino, plz help
I want to build a rf controlled car with a camera. The camera should transmit to a screen (not phone or PC). Is this possible and what do I need to get for it?
-1
votes
0answers
15 views
How to build gps prototype
I want to build a gps system for college project to track college buses can u help with that. how to start ? We have gps in our cellphone in which we can locate ourself only how to track other phones ...
1
vote
1answer
25 views
Hardware to measure velocity via string/wire attatchment? beginner
This is a broad question but I want advice on what type of hardware I should look for to make a device that could measure the velocity of an object attached via a string/wire to some sort of rotary ...
0
votes
0answers
13 views
Issue when using Nick Gammon Board Programmer Sketches
Unknown issue when using the Nick Gammon Sketches for Board Detector or Board Programmer. Unsure what the issue is however whenever the ICSP Reset pin is connected to D10 as instructed the following ...
0
votes
1answer
16 views
I2C Master send reset command to the slave counter
My name is Gianni, I live in Olbia Sardinia Italy and I have some experience in electronics.
For several years I have been passionate about Arduino.
They are now engaged in a project to counter with ...
0
votes
3answers
34 views
Arduino circuit diagram help
I'm new to the arduino and to EE in general. I've built the basic examples and a, now trying to get a deeper understanding of what the physics is doing. As such, I'd like some help in understanding ...
0
votes
1answer
25 views
Is it difficult to do high voltage parallel programming using nick gammon library?
I have bricked a few AT328P by invalid fuse settings.
Has anybody used the above sketches and the associated circuitry to perform high voltage programming?
Many thanks.
0
votes
1answer
39 views
Is the Serial buffer going from Arduino to PC and from PC to Arduino different?
I'm both sending and receiving strings to Arduino from my Python program on the PC and the opposite. I don't check by code if one is finished before doing the other. Are they seprate buffers, or is it ...
0
votes
2answers
21 views
SD card and arduino
Good day! I need help regarding the used of SD card on arduino. I need to store some recorded music and I want the arduino to process it. Do i need to add some module? And circuitry? Libraries and ...
-1
votes
1answer
30 views
Serial.readString() - how does it work exactly?
Someone posted a solution for a problem I had which used Serial.read() .Why doesn't readString() seem to work though? From the docs it seems it reads the data as a String object which would make ...
0
votes
1answer
25 views
Querying streaming sensor data on the Arduino board
I am new to Arduino and this forum, so please forgive me if I am asking something really trivial and stupid.
I have an Ardino board which collects sensor readings from a mpu6050 ...
1
vote
1answer
29 views
Linking Arduino With Twitter
My project is having Arduino with my WiFi shield connect to Twitter and look for any messages that other users have tweeted at me that contain a certain color, (I.E. @myTwitterHandle I want red) and ...
1
vote
1answer
14 views
USB 1.1 Low Speed project for Arduino UNO/ATmega328P to learn USB protocol
Arduino UNO is 5V, 16 MHz.
USB 1.1 Low Speed spec operate:
at 5V level - so we avoid to maintain voltage level
at 1.5 Mb/s - so we have 16/1.5 ~= 10 instructions per elementary protocol signal
Is ...
0
votes
1answer
27 views
Write to EEPROM during power down
I am making a counting device, and I would like to be ensure that the count is not lost if the power is lost.
As I need to count to many millions I cannot use EEPROM writes as I will trash the nvm ...
