A microcontroller board based on the ATmega168 or ATmega328.
0
votes
0answers
20 views
Make a prototype of a braille tablet using arduino [on hold]
I want to basically make a pin matrix controlled either by spring, electromagnets or small motors(spring being the most viable option), something like what’s shown in the image.
I'm pretty new to ...
-1
votes
0answers
22 views
Compatibility between Arduino Duemilanove and RFID RF522
Can I use this board (Arduino Duemilanove) with an RFID RF522?
I tried this tutorial: http://arduino-er.blogspot.gr/2015/10/arduino-uno-rfid-rc522-mfrc522-library.html
but I keep getting this:
...
-2
votes
0answers
12 views
Arduino Duemilanove keeps resetting
I've had this issue since a short-circuit. Then, I found it wasn't the short-circuit, but that Sony Ericsson Companion Suite was interfering with the communication. I would shut that program every ...
0
votes
0answers
45 views
Memory reduction in converting Serial.read to int/byte from 0-255
I'm taking rgb values in over Serial in a format like c-255 255 255. I currently have this code,
struct RGB {
int r;
int g;
int b;
};
struct RGB getRGBValues(char* rgbcode) {
char *rgbend;
...
1
vote
1answer
229 views
Four Fast PWM outputs, in parallel
I need four Fast PWM signals for four different transistors.
I want to use timers 1+2 (pins 3, 11, 9, 10) so it wouldn't interfere with delay(...).
I tried setting the timers to Fast PWM mode, and ...
0
votes
0answers
271 views
Arduino is freezing after 10-15 minutes
I am having a problem with my Arduino freezing after a small amount of time. I'm using an RTC DS1307 breakout to keep track of the time and display the time on an LCD. It displays hours, minutes and ...
0
votes
1answer
74 views
Cannot control servos through 32-servo-controller on Aurduino Duamilanove
I have servo (TowerPro sg90) connected to 32 servo controller (this one) through UART interface (RX-TX, GND-GND).
Seller provide documentation how to connect and control my servos, but it isn't work. ...
2
votes
1answer
157 views
How to make data sent by Python (via serial connection) wait for Arduino to finish current task?
I am trying to make my Arduino micro-controller and my Mac talk together, and I have created a functional serial connection. My computer is sending data to my Arduino, and my Arduino is sending a 1 ...
0
votes
1answer
210 views
Dimming 6W (24V DC 0.25A) LEDs using Arduino
I want to dim 24 LEDs which are powered by a transformer outputting 24V 6W at 0.25A
I am worried about temperatures, especially considering the circuit has to stay on for several hours keeping the ...
1
vote
1answer
193 views
Problem in SIM900 GPRS connection
I make simple code to read web page by ITEAD Gboard. Here is my code:
Serial.write("\nStarting..........\n");
mySerial.print("AT+CSQ");
delay(1000);
while(mySerial.available()!=0)
Serial....
0
votes
1answer
58 views
Will the Uno bootloader work in the Duemilanove?
I had an old duemilanove lying around (Which was not working because i accidentially busted the atmega) and I recently bought some atmegas pre-flashed with the UNO bootloader. So I tried to put one of ...
0
votes
2answers
162 views
Why do only specific arduinos support the keyboard and mouse libraries?
The Arduino website suggests that only three boards are supported for the Mouse and Keyboard library page:
Leonardo
Micro
Due
What is special about those boards, that the other boards in the ...
0
votes
1answer
140 views
Can't drive long NeoPixel strips with Due or Duemilanove?
I spent a significant part of today developing a sprite movement library for a 30-pixel NeoPixel strip using my Arduino Duemilanove (ATmega 168). It works like a charm. However, if I change N_LEDS to ...
-1
votes
1answer
110 views
How to prevent file overwriting in processing?
i am working on this arduino project using processing. There are some sensor values which should be logged, but unfortunately my processing code rewrites the file after each cycle so that i get the ...
1
vote
2answers
305 views
Can I measure the current (mA) of my project with just a multi meter?
I have a project and wish to choose the correct battery back for it such that it will last the required amount of time between each recharge of the battery pack. I am using an Arduino Duemilanove with ...
0
votes
5answers
743 views
Measure total microcontroller current?
So I have a Duemilanove board and am utilizing 7 output pins, I power a Pixy camera and pan/tilt servos from the ICSP header, i also power an HC-SR04 sonar snsor directly from the board.
Of those 7 ...
0
votes
2answers
841 views
Struggling with SD card read on Arduino
I'm attempting to read data from my SD card, but I have strange behavior and can't figure out why this is happening.
I'm using CardInfo from the Arduino example and am trying to read the data from my ...
1
vote
0answers
170 views
Wireless serial communication. Sending 4 different continuous values
I am trying to control 4 motors using 2 joysticks.
I want to send continuous analog values of 2 joysticks (x & y both).
I am using bluetooth HC-05. I am using the basic logic that is sending a ...
1
vote
2answers
703 views
How to display tilt sensor data on an LCD?
I'd like for a 16x2 LCD monitor from Sparkfun to display sensor data from a 4-directional tilt sensor from Parallax. The Arduino board is a Duemillanove. The board will run and power both programs and ...
0
votes
1answer
25 views
Use Arduino Mega to program Arduino Duemilanove
I hava an Arduino Duemilanove but I think that its FTDI chip is crashed.
I have an Arduino Mega too, so can I use it to program my Duemilanove?
1
vote
1answer
854 views
Receiving and sending on the Arduino Duemilanove with an MAX3232 chip
I have a max3232 hooked up to the RX and TX pins of the Arduino Due. I'm trying to write a simple program to relay messages received from USB and output as RS232 through the chip. Here is my code:
...
1
vote
3answers
245 views
arduino boot loader problem
I am using atmega 328pu instead of atmega328p-pu. I am trying to upload the bootloader using AVR pocket programmer.
I have changed signature from 0x1e 0×95 0x0F to 0x1e 0×95 0×14.
(Relevant link)
...
1
vote
1answer
168 views
Duemilanove serial TX/RX: which is what?
I want to use the GSM shield. For my project, I will hook it up directly to pins 0 and 1 (TX/RX). Will it work right away? Do I have to know which is TX and which RX and declare it?
I will not be ...
