Arduino is an open-source electronics prototyping platform based on flexible, easy-to-use hardware and software. It's intended for artists, designers, hobbyists, and anyone interested in creating interactive objects or environments.
0
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1answer
13 views
Is it possible to use a digital pressure sensor with a ATtiny4313?
I have a pressure sensor as follows, tested and works great with the Arduino Uno:
Output is digital through SCL/SDA.....
Will I be able to use this directly with the ATtiny4313 coding with Arduino ...
0
votes
1answer
15 views
Accessing Arduino Yun from Internet
I am trying to access my Arduino Yun from the internet, and it's not quite working. I have correctly port forwarded the port 5555 from the router to the Yun (verified I am able to access my many other ...
2
votes
2answers
75 views
Arduino turning a knob left and right with Digital PWM [on hold]
I am trying to find a way in order to turn an car amp's bass level knob left and right using an Arduino's digital PWM pin. I am thinking that a stepper motor would be the correct motor to use in order ...
1
vote
3answers
138 views
Should I Remove the Power When Unplugging Components From an Arduino?
When I am done with a circuit and want to build another, should I remove power from the Arduino or can I just remove the unnecessary parts and start plugging in the necessary parts?
-2
votes
0answers
44 views
Electric Potential [on hold]
When work is done on a positive test charge by an external force to move it from one location to another, does the potential energy increases or decreases, and does the electric potential increases or ...
0
votes
0answers
31 views
DS1307 and Arduino Yun [on hold]
I recently purchased a DS1307 RTC module to keep time for my Arduino Yun. I cannot get the correct time no matter what I do. I always get 162:162:82. I connected the module to an Arduino Yun and was ...
4
votes
2answers
159 views
Is there any reason why using a baud rate of 31250 on an Arduino MIDI project could cause problems?
I have a 600 pulse per revolution optical encoder (and some other stuff) connected to an Arduino Uno (tried it on r2 and r3) through the interrupt pins 2 and 3.
While waiting for a my MIDI jack to ...
3
votes
2answers
314 views
Control 5V DC motor with Arduino
I'm trying to build a circuit to control a 5V DC motor with Arduino. My issue is that I can't understand the resistance value within this scheme:
Which resistor should I use in order to make work ...
2
votes
1answer
70 views
Arduino Starter Kit, Color Mixing Lamp Project 4
I just started looking into electronics and circuits. I purchased the Arduino Starter Kit to help get me started. I have a question regarding one of the 15 projects it comes with. Specifically with ...
2
votes
1answer
113 views
Detect Twist-Opened Bottle Cap on Arduino
I'm building a smart bottle cap. Every time it's twist-open it records a long timestamp to local storage. When user opens a smartphone app it syncs data from storage to phone via bluetooth LE. It is ...
-1
votes
1answer
73 views
How to drive nixie tubes from Arduino
What would be the most practical (and preferably cheapest) way to drive 3-4 nixie tubes from an Arduino Uno? I am looking for a setup that, once I make it, will make setting the nixie tube is as easy ...
-1
votes
0answers
20 views
Cheap ethernet powerline adapters [on hold]
I'm making a little domotics system with arduino's and powerline adapters. The only problem is that the powerline adapters cost more than the arduino and ethernet shield itself. So I'd like to know if ...
0
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0answers
21 views
Not getting data from Parallax GPS
I am trying to use a Parallax PMB-648 GPS with an Arduino Nano running this code:
...
3
votes
2answers
135 views
Is a USB Charger a regulated supply?
I'm trying to design a circuit based on an ATMega328 (from an Arduino stand-alone type kit), and was planning on adding a USB connector and powering the board from a generic USB phone charger type ...
2
votes
1answer
64 views
Arduino needs serial init to work
I recently bought arduino uno r3 and started with simple program which blinks embedded led:
...
-5
votes
0answers
47 views
Conversion of raw data received from MPU6050 [on hold]
I am using Arduino UNO board with MPU6050 (datasheet). Following are tasks I have to finish :
Reading the Accelerometer ( X Y and Z axis ) values on the serial monitor in terms of 'g' ( acceleration ...
1
vote
0answers
20 views
XBee Coordinator API not receiving data from Router AT pin 20
A Xbee Series 2 in Router AT configuration with a potentiometer wiper output connected to XBee's pin 20 AD0 is supposed to send the analog data every 100 ms. It was ...
1
vote
0answers
13 views
ATND gets Response when Xbee Router AT is connected to Computer, no response when on breadboard
I have a Xbee Series 2 in Coordinator AT which is connected to a computer, a Xbee Series 2 in Router AT which is connected to a breadboard and powered by Arduino's +3.3V and GND rails.
Coordinator ...
1
vote
1answer
76 views
DMX on Arduino with RS485
I'm implementing DMX on Arduino. DMX uses the RS485 standard to communicate.
In the specifications of RS485 it notes that there is a positive line, a negative line and a ground line. If the positive ...
0
votes
3answers
50 views
Linear potentiometer for suspension travel
I am working on a project for university measuring the extension of a cars suspension.
I have a potentiometer available to me, but have a few questions regarding how to use it. I understand that it ...
0
votes
1answer
57 views
(Arduino UNO) Random Button inputs due to change in code
(First of all: Sorry for the Title.. I really don't know how to describe my problem in one Sentence)
I'm an arduino beginner. I build a two button control for an electronic motor.
simulate ...
1
vote
1answer
64 views
Transmit and receive 433,92MHz signal from the smartphone [closed]
I would like to use my smartphone to send and receive signals from the devices that is working on the 433,92MHz.
I assume that it's not possible to communicate directly with this device from the ...
1
vote
1answer
67 views
Can I use Arduino's FTDI chip for another device?
I have an Arduino UNO (R3) with its main chip and main crystal oscillator accidentally destroyed, but everything else is working I presume.
I started learning PIC (16/18f) and was wondering if I ...
-2
votes
2answers
50 views
How do I find co-ordinates from an accerelometer? [closed]
I have an Arduino and an ADXL335 accerelometer , all I want is to find the coordinates only ( x and y) (and later also to calculate number of footsteps) , I do understand accerelometer detects ...
0
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0answers
28 views
Measuring consumed energy with MCP3905A
first of all sorry for my English because I'm Italian.
I'm trying to measure consumed energy with MCP3905A evaluation borad. ...
0
votes
0answers
40 views
Sonic Range Finder up to ~200 meters [closed]
I'm trying to locate a sonic range finder that is functional to 200 meters. With much searching, I've only been able to find one that functions up to 30 feet.
At this range, would a super-sonic range ...
1
vote
1answer
76 views
Switching Arduino/ATMega to sleep mode when on battery
I'm trying to make a small clock but want to ditch the need for a separate RTC chip with battery backup. What I would like to do, instead, is keep track of the time completely on the ATMega using the ...
0
votes
0answers
45 views
arduino IDE isn't able to load skethes to my arduino mega board
I made a big mistake: I've written a small sketch just to play with my new arduino mega 2560. The sketch worked fine but a bit slow, so I thought that if I increase the baud-rate I will get faster ...
-2
votes
0answers
22 views
How to read COG and Velocity(3D) from (3DR GPS uBlox LEA-6h-002) using APM 2.5 (ArduPilot Mega 2.5)? [closed]
The connection is made by the SPI port (not the UART port), as shown in the following images:
http://s2.subirimagenes.com/otros/previo/thump_878803210.jpg
...
0
votes
2answers
93 views
linear-control 12V DC fan with 5V low-current (Arduino)
I am trying to control a 12V DC computer fan ...
without PWM for longer life and less high-frequency sound emitting
Controlled by 5V positive voltage coming from the arduino after a DAC
Using a ...
1
vote
0answers
111 views
Where does serial data get stored on a PC? [closed]
Say I have the following python script to read in serial data from my Arduino:
...
0
votes
1answer
36 views
Where to connect RX and TX on my Sainsmart UNO?
I am trying to connect a Bluesmirf Gold on my Sainsmart UNO. I don't know where I should connect the RX and TX on the Sainsmart and I don't have any electronics experience.
On Arduino, that's quite ...
1
vote
2answers
76 views
Arduino. How do I limit the output value of a PID controller? [closed]
I have the following PID algorithm I snatched from a website whose name I forgot and I need to limit the output such that its maximum value is, let's say, 90. How do I do that? I tried using Arduino's ...
2
votes
1answer
87 views
How to use MOSFETS for single-button on-switch and input signal to microcontroller [duplicate]
I'm trying to create a single button circuit for the purpose of both powering on a microcontroller (probably an arduino) and then allowing the microcrontroller to control its own power (power itself ...
0
votes
0answers
52 views
How to connect Arduino Uno to PIC18F4620 using I2C
Anyone have an idea about how to connect Arduino Uno to PIC18F4620, the following circuit illustrates what I mean:
I want to use Arduino as a master and 2 PIC18F4620 microcontrollers as slaves, the ...
2
votes
1answer
55 views
Read variables from Arduino code into PureData?
I've been trying to find ways to pass a variable from my Arduino code into PureData in real-time. I've explored PDuino and the Firmata library, but the tools seemed a bit more for reading and ...
0
votes
1answer
49 views
a4988 Pololu and Unipolar Stepper Motor
I currently have an Unipolar Stepper Motor with 6 wire and a A4988 Pololu Stepper Driver also Arduino Board, but there are not any guide to connect Unipolar Motor with Driver, Only Bipolar.
Someone ...
1
vote
1answer
41 views
RS-422 distance sensor with arduino
I need to make a converter to go from RS422 full duplex to my Arduino. I have found lots of different chips which I think can do this, but am slightly confused by the terminology. The RS422 device is ...
0
votes
3answers
143 views
Converting ~5V DC to 12V DC safely
We have an Arduino device that is using a sensor requiring ~12V. Are Step up devices safe? Are there any dangers in terms of current etc?
To elaborate; we plan to run the 5v supply from the arduino ...
0
votes
2answers
77 views
Arduino - Voltage ladder and analog input pins
I have two questions:
1. Does the analog pin on the arduino board get the voltage or the amperage from the circuit I connect it to? (of course it's scaled to a value from 0 to 1023)
.2. I have this ...
1
vote
1answer
90 views
How to check a 433Mhz module on an Arduino
I am new to arduino and electronics so please bear with me :)
I would like to build a 433 MHz receiver which output I would later feed to a RPi (that will be the easier part for me). I bought a set ...
0
votes
1answer
37 views
Programming FabISP Attiny44 with Arduino
Is there a way to program the Attiny44 on a FabISP board using an Arduino board? I read through a few online tutorials, and the ones that even mention using the Arduino as an ISP for an Attiny44 don't ...
2
votes
0answers
65 views
4 cell bath scale to Arduino what is circuit? [closed]
A bath scale has 4 cantilever beam load cells; one at each corner. Each beam is fitted with 2 strain gauges glued to one side of the beam and three lead wires, Red, White, black, go out of the cell to ...
0
votes
0answers
54 views
Custom Arduino board beeps and process freezes while I'm uploading firmware to it. Why?
The strangest thing is happening to a standalone Arduino board that I've designed and built. The board (whose schematics are below) has the following features:
It has an ATmega328P with a 5V voltage ...
0
votes
1answer
65 views
What are the components used for the iPhone-sized car hack? [closed]
Recently two security researchers hacked a car with iPhone-sized gadget according to this link.
They didn't release any technical details, but I think we can guess from the picture of the gadget:
...
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5answers
188 views
Arduino vs Microprocessor vs Microcontroller
What is the difference between an Arduino, a microprocessor, and a microcontroller? I'm trying to determine what is best to operate a cheap resistive touch screen.
2
votes
3answers
179 views
What resistors to use to read several buttons with a single analog pin
EDIT: Thanks, all of you helped a lot! Ricardo summed everything up nicely so I'll mark his answer as the best, but all of the answers helped me understand. Thanks again :).
I have an Arduino Uno R3 ...
0
votes
2answers
62 views
Xbee-Arduino serial input (outliers problem)
I have an Xbee configured as receiver and Arduino (standalone w/ atmega328p chip) connected together. The RSSI pin of the Xbee is connected to one of the Arduino Board PWM pin. I used the PulseIn to ...
0
votes
2answers
47 views
LPD8806 Arduino Uno RGB strip
To start off I'm pretty new and have never used a LED strip before. I bought a meter of RGB LEDs off of ebay. The strip is based on the newer LPD8806 chip. I downloaded and tried to run the strandtest ...
1
vote
1answer
68 views
I2C bus and Arduino Uno
I'm not really sure if this is the correct place but here we go.
I'm in the process of creating a robot for Uni and the hardest part for me is the hardware side of it, specifically the electronics. ...
