arduino.stackexchange.com is a stack dedicated to Arduino
5
votes
1answer
30 views
Millis versus centis on AVR platform
I am building a device on the AVR platform. The device will need some timing information, so I was thinking of reimplementing Arduino millis-like functionality ...
0
votes
0answers
3 views
pcf 8591 arduino and labview [migrated]
Is it possible to connect p0cf 8591 adc / Dac kit to arduino through labview interface for arduino. i want to take data from analog sensor to pcf 8591 to arduino to labview for processing. Arduino is ...
0
votes
1answer
43 views
Integrating simple Bluetooth functionality without microcontrollers
I have recently bought a Bluetooth HC-05 Module, and have followed many tutorials on integrating it with an Arduino, or a microcontroller. However I got interested in whether it is possible without ...
0
votes
1answer
33 views
4015 with Arduino
I'm having multiple issues with this project. I know I've managed to screw it up, but I'll start with the basics. I'm making an LED stacker using an Arduino nano as a substitute for a 555. This ...
0
votes
0answers
34 views
How do I control a brushless DC motor without an ESC with Arduino
Is there a way to control brushless DC motor removed from a CD-ROM drive without using an ESC by using an Arduino.
0
votes
0answers
7 views
Stream audio from smartphone to arduino [migrated]
Is it possible to stream audio from smartphone to my arduino?
And if yes, what does it require?
Does it require programming from the smartphone side?
I know programming on the arduino. I have even ...
0
votes
0answers
21 views
Controlling ESC with Arduino [migrated]
I want to control these motors: hexTronik DT750 Brushless Outrunner 750kv with this battery: Turnigy 2200mAh 3S 25C Lipo Pack and these ESCs: TURNIGY Plush 18amp Speed Controller.
I am new to this ...
-1
votes
0answers
24 views
What does the line “while (! Serial);” do in an Arduino program? [migrated]
I'm new to Arduino, and I am trying a couple of tutorials. What does this line do in a program?
while (! Serial);
0
votes
0answers
15 views
Help connecting an Arduino and an electronic speed controller [migrated]
We have this controller that we are planning to use with this motor. How do we plug it to the Arduino to make it work?
This is a totally new subject for our school team, since we are mostly ...
0
votes
1answer
30 views
Strange problem with JY-MCU (HC-06) Bluetooth module
Short explanation: data sent over the bluetooth serial does not arrive correctly to the Arduino.
Yesterday I connected a JY-MCU bluetooth module to my Arduino UNO R3 to test it. I connected the TXD ...
0
votes
0answers
22 views
Beginner friendly bluetooth LE arduino for wearable [on hold]
I'm looking for a good beginner friendly arduino for an android/iOS wearable that does the following:
Bluetooth LE
Coin cell powered
Small form factor
I've ...
0
votes
1answer
33 views
Arduino Mega & LIN Transceiver (MPC2004)
I am trying to connect an Arduino Mega with another device using a LIN Transceiver. I have decided to use a LIN MPC2004 Transceiver for this.
I am now trying to understand the reference design of ...
0
votes
0answers
39 views
Using timers on an Arduino Mega 2560 [migrated]
I'm an amateur and I wish to use timers in my project. I'm using an Arduino Mega 2560 with a touch-sensitive screen with six DS18B20 temperature sensors and a DS1307 RTC (real time clock). I would ...
0
votes
0answers
57 views
Simple Circuit To Light Up OLED
I'm a ICT student and need to make a circuit to light up an OLED.
we have developed an OLED but have some trouble with the power supply.
We need to have an arduino so we can send an PWM-signal to the ...
2
votes
0answers
65 views
AVR program code location
I'm working with an ATmega328P and I wanted to interface with the flash memory writing data to it with the macros provided by avr-libc. This is the memory map for my chip:
I don't understand where ...
0
votes
0answers
34 views
AVR ISP error programming ATmega32u4
I have made a custom board based on the Arduino Leonardo design. It is an exact Leonardo clone.
I am trying to program the bootloader via the AVR ISP tool.
I am getting the message as follows -
...
0
votes
0answers
4 views
Debugger for Code::Blocks + Arduino [migrated]
I am not very experienced in this, but I was wondering if Code::Blocks has a way of getting a debugger that runs for Arduino chips, specifically. I understand there is Arduino IDE for but does it ...
0
votes
2answers
76 views
How to determine bipolar stepper motor wiring (came from a 3.5 inch floppy drive)?
I have extracted a small stepper motor from a 3.5 inch floppy drive, that I intend to use with an Arduino or Raspberry Pi. The problem is: initially a thin ribbon cable was attached to it, with no ...
0
votes
0answers
14 views
Dumping Code in Arduino YUN in windows 8 Machine [migrated]
I am having Arduino yun , i trying to burn the code in Arduino but after i click on upload , i get the error message:Please Help at first it showing Arduino under the port tab after this message no ...
0
votes
0answers
7 views
How do you connect an Arduino UNO to a Si4703 Tuner Breakout Board? [migrated]
I need to connect a Si4703 Tuner Breakout Board to an Arduino Uno. I have seen sample code for it so I know that it is possible. Here is the website selling the Si4703: ...
0
votes
0answers
18 views
Arduino: How does digitalRead read a value? And what is this value? [migrated]
I have a Arduino Uno with 14 digital pins. I believe they have an output of 5V.
But they can also input values. I'm not sure of what exactly it reads when it does that (amperage, voltage ...). Also, ...
0
votes
0answers
11 views
What is the execution context of the function registered via the Wire.onReceive() method? [migrated]
I'm basically wondering if it's OK to Serial.write() or print in the function I register to be called when I2C data is received. I can't seem to find the execution ...
1
vote
3answers
119 views
Sin signal from PWM
I wrote a program in order to use Pulse Width Modulation to simulate a sinusoidal signal.
Added a low pass filter to get rid of the noise and the traces of it being a discrete signal.
Added a half ...
0
votes
0answers
7 views
Communication between Arduino and iOS device [migrated]
How can I get weight that has been measured by an Arduino device to show up on an iOS mobile or tablet device as a number?
Thanks.
Warmly,
N.
0
votes
0answers
27 views
Which Platform for GPS and Various Sensors? [closed]
I am new to platforms like mbed, Arduino, PIC, etc.
I have to choose a platform to include a hydrophone, pressure sensor, acceleration sensor, GPS, and to record all the readings.
Which will be a ...
1
vote
2answers
60 views
Measuring power consumption of a design ranging uW to tenths of mW
I want to measure the power consumed by my design ranging from uW to tenths of mW. Power values I wish could be recorded digitally so that I can use them for analysis later. May be another form is ...
0
votes
0answers
17 views
Send Processing color data into Arduino [migrated]
I am trying to send color() data from Processing to Arduino.
Here is my code from Processing:
...
0
votes
2answers
77 views
What happens with Arduino digital pin 12 when the power is OFF
I am using the Arudino Uno board as a trigger/delay pulse generator to drive a laser. I read the input pulse train sequence from a test point on the external device using pin 12 set as INPUT. The ...
0
votes
2answers
82 views
I2C Communications with Arduino
My Engineering Design and Development (EDD) class is working on a high altitude balloon (HAB) and my friend an I are in charge of data collection. It looks like we are going to use an Arduino (Uno or ...
2
votes
0answers
92 views
Arduino Leonardo + 3 wire Load Cells + INA125P – Analog Signal Bounce / Noise
I actually have a software background so my experience in electrical engineering is somewhat lacking. Never the less, I have given my first Arduino project a go and for the most part I am quite happy. ...
0
votes
0answers
17 views
arduino manchester encoding two receivers [migrated]
I want to make the arduino receive from two receivers. I am trying to make another pin receive signals from another connected receiver in the pseudo code below, how can this be done?:
...
0
votes
2answers
137 views
Use 555 for additional 40KHz PWM in Arduino
I need to transmit infra red signals using IR LED from my Arduino device. The IR signals consist of PWM 40 kHz periods and "silence" periods of various length (typical IR remote signals).
I know ...
0
votes
1answer
54 views
Calculating mV/g of a sensor
I have constructed a piezo-resistive sensor using graphite. I managed to obtain the output voltage of 0-5V by using the ADC of my Arduino to read the sensor. But I have no idea how to calculate its ...
1
vote
2answers
63 views
Shape Memory Metal framed sail
I am working on a costume prop that utilizes a triangular cut sheet of emergency blanket spined with a single 12" long, .04" dia piece of nitinol wire that has a transistion temp of 115deg F. My plan ...
0
votes
2answers
72 views
Controlling AC mains using Arduino and removing control easily
I am planning to for an Arduino to read status of a switch, and accordingly switch on and off AC appliance, for a demo purpose. I want to add a feature to it of easy recovery to manual switch control.
...
0
votes
0answers
45 views
Canon EF SPI data protocol and IS activation
I have been trying to find information about Canon EF data protocol between lens and body. So far I have seen examples how to control focus or aperture but I would like to know how IS is activated. Is ...
0
votes
1answer
65 views
Detect alternating current using one contact only and arduino analog input
I am trying to setup an arduino so it can detect an AC where it only has access to one pole.
(kind of like these "electricians screwdrivers" that you put in one of the connections of an electric ...
1
vote
3answers
150 views
Excessively high temperature reading with LM35
I am really new to electronics and I am just experimenting at the moment with a breadboard.
My question here is related to the LM35 temperature sensor and Arduino micro controller. I am getting a ...
1
vote
2answers
70 views
Designing an ABBA circuit (3 input, 2 output) inputs: (GND, +V, Logic)
I'm working on a relatively simple Arduino project and want to reach an elegant solution for a circuit. I'm not sure if there is an existing IC for what I want to do, but here is a diagram for what ...
0
votes
1answer
53 views
tlc5947 LED driver without constantly occupying uC pins
I am working on TLC5947 chip to control 24 RGB Leds to create different patterns with them.
My concern is, I have to keep giving command to SIN, SCLK, XLAT pin of microcontroller every loop to keep my ...
0
votes
1answer
125 views
Arduino dies after activating a 5th led
I have an Arduino Uno, using a MAX7219 to control a 8x8 Bi-color led matrix.
The problem however, is that upon activating a 5th led in the matrix, the unit "dies", in lack of a better word. I can ...
3
votes
1answer
87 views
Multiple nrf24l01, shared power, ripple/interference, DSO screenshot provided
I've got this circuit with 3x atmega328 & nrf24l01+ running off shared power supply, either 2x AA battery or 3v3 reg.
It acts as a repeater, and depending on the origin of the message and the ...
0
votes
0answers
7 views
bitRead() gives wrong answer Arduino UNO R3 [migrated]
I am trying to read from a quadrature rotary encoder using an Arduino UNO R3. This is done by connecting the encoder's channel A pin to the Arduino interrupt 0 pin (digital IO pin 2). Inside the ...
0
votes
1answer
37 views
Bluetooth headset button replacement
I have a Samsung HM1300 headset and want to emulate the call button signal via a microcontroller.
Here is a pic of the inside of the headset:
(Original)
The gold button is the call button. I see ...
0
votes
0answers
22 views
Hacking a Bluetooth headset
So I have a Samsung HM1300 (http://www.samsung.com/us/mobile/cell-phones-accessories/BHM1300NBACSTA).
I would like to hack this device, and transmit the button data from the call button for something ...
0
votes
0answers
29 views
Sensor to detect that the subject is still close
I'm thinking about starting a small Raspberry Pi / Arduino project and I have to use some sensors. I want to detect if a mechanical plastic part on the other side of a wooden panel has moved and if ...
0
votes
1answer
48 views
Replace potentiometer with digital version (Speakers)
I am trying to get my PC speakers to be controlled by my arduino. I've taken apart the control and it seems very straight forward, just need a few questions about subbing the manual pots for digital ...
0
votes
2answers
125 views
Porting SPI code from (Intel) Galileo to Edison - Arduino
I'm currently working to port some Arduino sketches from Intel Galileo that use SPI (using a prototype Arduino Breakout board).
I haven't been able to get it to work so far - but I have used an ...
0
votes
0answers
19 views
Digital pins on Arduino function as both positive and negative terminals? [migrated]
I'm learning the arduino platform and working on a circuit that connects the two pins of a piezo buzzer -- one to ground and the other to a digital pin of the arduino board. In this configuration, is ...
0
votes
2answers
57 views
Wheel speed from Shimano dyamo hub using arduino
I'm trying to figure out a way to extrapolate wheel speed from the Dynamo hub I just purchased. I outputs 6V 3W AC, and I would like to potentially measure it using an arduino if possible, I' assuming ...
