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.
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1answer
15 views
Communicating an Arduino with a Data logger
I need to communicate a Sharp Dust sensor to a Data logger for a weather station project. It was straight forward to communicate other sensors (wind, temperature) as they were ready calibrated from ...
0
votes
1answer
24 views
Wiring a GY-521 to an Arduino Uno R3?
I am searching for a non-technical picture or diagram or explicit textual instructions explaining how to wire a GY-521 Accelerometer/Gyro to an Arduino Uno R3.
I am a software developer and need ...
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0answers
18 views
OLED Custom Character not being displayed correctly on Arduino Uno? Too Many?
So I have a bunch of custom characters and they are created like this
...
1
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0answers
17 views
Arduino with FTDI cable - USB port error
This is my first time using FTDI with Arduino.
I'm using the SparkFun EL Sequencer which uses and embedded ATMega328p. I hooked it up to my USB port using this FTDI cable. When I try to upload my ...
2
votes
2answers
24 views
Short-cut when using SN75441 h-bridge (with an Arduino)
I'm trying to control 6 bi-directional motors using an Arduino to feed an SN75441. ** In order to minimise the number of wires between the two I'd like to tie the Motor Enable pins (1 & 9) to Vcc1 ...
1
vote
1answer
34 views
How do I get my Arduino Mega 2560 registered as a game controller?
I'm tempted to buy an Arduino Leonardo, but I already own an Arduino Mega 2560. I understand that the Leo already has support USB HID.
I'm just wondering if there's a fairly easy way to get my 2560 ...
3
votes
1answer
29 views
Problem stacking accelerometer and SD card shields on Arduino UNO
I have an ADXL345 accelerometer on a Makershield stacked on top of a Seeed SD card shield. Both of those are stacked on an Arduino UNO R2.
I've got each working individually, but when stacked they ...
0
votes
2answers
30 views
Arduino Time.h - Resets on Serial Connection for Sync
I realize and understand the problem with arduino boards resetting whenever you open a serial connection as stated and answered here.
However, because of that I'm trying to figure out how various ...
1
vote
1answer
32 views
Arduino Motor Shield for 12v stepper motor
new to the forums here!
I'm making a basic rig for timelapse photography using arduino.
It is a panning system for a DSLR camera, so I went with the motor shield from Arduino with the L298 chip and ...
1
vote
0answers
32 views
Olimexino 328 upload problem
I'm young user of Arduino IDE and with my new Olimexino-328 it's quite impossible to upload any sketch without stk500 sync error :
...
-3
votes
1answer
102 views
How do I find companies that would build prototypes for me? [closed]
Im asking since I have projects that I would like to test, but honestly have little to no time to do this myself. Particularly since I've never even welded since I was a kid.
I just need to know how ...
4
votes
2answers
110 views
Is it possible to extract code from an arduino board?
Is there a way to export code for an arduino even as a hex file?
0
votes
1answer
47 views
Using Arduino Uno to Log GSM Air Interface Messages
Is it possible to log the GSM Air interface messages that are sent between a GSM Module and the GSM/WCMDA network using an Arduino Uno?
Basically, I want to log/record all the GSM messages of the Air ...
2
votes
2answers
65 views
Applescript to Arduino LCD only works with Serial Monitor
I spent all day trying to figure this out and finally got somewhere that atleast lets me know that I am doing something weird...
I am trying to send data to my LCD Screen on my Arduino Uno, but for ...
0
votes
0answers
34 views
Simple PIC18 USART Interrupt not working
Edit
So talking to the duck and some more searching here seems to have solved it. On power on and reset, ports are set to be analog. I now disable this in my setup. It was a problem between this ...
1
vote
1answer
40 views
Arduino XOR BCC checksum
I need to calculate the Block Check Character (BCC) via XOR of this array
byte data[] = {0x02,0x06,0x06,0x06,0x06,0x06};
and i'm under Arduino. Is there already ...
-1
votes
1answer
53 views
SainSmart 5V 4 Channel Relay momentary switch
Hey all i am wanting to hook this relay up here:
What i am wanting it to be hooked to (output) is the pwr and reset switch on a PC motherboard to act as a momentary switch:
I am also wanting to ...
1
vote
2answers
41 views
Arduino Ethernet not visible in Router Status
Hey all i am trying to send over my code to my Arduino Ethernet board via the Adafruit FTDI friend. I am using the 1.0.4 version of the IDE and have the following settings:
Tools -> Board -> Arduino ...
-1
votes
0answers
67 views
Thermostat Connections with Arduino
I want to control my home thermostat using an Arduino microcontroller. From what I've heard, it is pretty straightforward as the Arduino can be powered through the 24V that is coming to the thermostat ...
-1
votes
3answers
82 views
Information delivery through zigbee
I am doing a project in which i have to measure the voltages of a given terminal and send it to other distant system through zigbee. My work plan is like this: I will use an arduino board and measure ...
4
votes
1answer
96 views
Wiring an illuminated toggle switch
I'm trying to build a model rocket launcher circuit. So far I have
this
The igniter requires 12V and 3A, BAT1 is 12.6V 9800mAh.
The arduino input pin should read HIGH when the igniter is connected ...
2
votes
3answers
54 views
arduino and bluethooth usb dongle
Is it posible to use a mini USB bluetooth dongle like this one
(image)
in order to improve my arduino UNO so it can comunicate with other bluetooth devices? If it is, how can I do that?
3
votes
2answers
97 views
Do I need to use a resistor with a microswitch to limit current for an Arduino Uno?
I'm using an Aruduino Uno to control a small robot and I'm starting to add micro-switches as bump-sensors. I know that when I'm creating a circuit with LEDs I need to use resistors to limit the ...
0
votes
3answers
101 views
How to control 0 to 110 of AC with microntroller rms output of 0 to 5 v
Is it possible to control high current with small rms voltage?
UPDATE
Do you think that this is gonna work?
1
vote
1answer
78 views
Use power line to communicate between devices - simple communication
So I am a google programmer getting interested in hardware hacking.
What I want to do:
Use Arduino or a similar microcontroller to control the lighting in my house, of course for as cheap as humanly ...
2
votes
1answer
43 views
Optiflow based Odometry speed sensing
Am planning to build a odometry speed sensor based on optiflow to measure the speed of the conveyor. I am using ADNS-5020-E from a old mouse of mine and managed to get the X and Y coordinates by ...
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votes
0answers
40 views
RF Transceiver without arduino [closed]
I want to transmit analog voltage signal from pot through rf transceiver(FSK Modulation) without Arduino at the transmitting end. Is that possible??If it is,can u tell me the pin connections
6
votes
2answers
206 views
Any reason not to use Timer0 on AVR?
Just a basic question... For arduino/avr/ATMega328 I find lots of examples using Timer1 (there's even a whole library for it) but rarely any that utilize Timer0 (or Timer2).
Now, I know that using ...
0
votes
1answer
56 views
ds1307 incorrect timing
i built a clock circuit using ds1307 and atmega328 and it works very fine
but i noticed that the time of my clock is increment by 6 seconds in a day (approx) by comparing to my computer clock
what is ...
1
vote
3answers
156 views
Python serial between Arduino and Raspberry Pi: Data is modified upon reception
I'm using an Arduino for sensor readings and sending them to a Raspberry Pi via USB, using PySerial for data reception.
It works great, except for the fact received data is awkwardly modified (And ...
-1
votes
1answer
46 views
wireless communication for identification purposes [closed]
I am working on a project that requires me to have a microchip installed on an electronic device and can also be identified by a scanner. The electronic device may be a car, so I need
microchip ...
1
vote
2answers
87 views
Motors controlling Arduino usb question
simulate this circuit – Schematic created using CircuitLab
I made a RC car with an Arduino board, using an H-bridge to operate the motors. I connect them through a capacitor and a diode ...
1
vote
2answers
70 views
Dimming multiplexed LEDs
I'm multiplexing 32 LEDs in a 4:8 configuration on an ATMega328 and am trying to dim them with what is probably a completely naive understanding of PWM. Note: I'm multiplexing them directly with 12 ...
0
votes
1answer
79 views
Getting a incorrect voltage from a analog sensor
I'm trying to build a very simple thermometer using shift registers, 7-segment LEDs, and a LM35. The idea of the project is to learn more about shift registers and how to use them. What I've done so ...
0
votes
1answer
45 views
Flash atmega 8u2 on arduino mega with another arduino mega as ISP
[For a detailed post of my problem read here]
Long story short: My Arduino mega 2560 works fine (I plug it in, code runs flawlessly) except for the usb-serial converter which when connected to the PC ...
1
vote
2answers
62 views
Connecting RFID reader with RS232 interface to an arduino
I am attempting to detect 134.2kHz RFID tags using a chip from Priority 1 Design, specifically this one
I am attempting to connect this to an arduino Uno, but I am not really sure where to start. ...
-2
votes
0answers
28 views
Query and parse with ARDUINO2560 [closed]
I want to use an ARDUINO MEGA2560 to communicate with a hand held LCR meter and light three leds’ labeled target near, target far and sensor fault, based on inductance. If inductance is < L min ...
0
votes
2answers
109 views
coding using Arduino, two 74HC595 and two RGB LED, problems with shifting out database
the whole point of this was to be able to send 8 bits of color code to 2 rgb leds through 2 74hc595 registers. if i can get the default color for each led to be sent out then the next part of code is ...
1
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0answers
53 views
ATTiny Default AREF
I am trying to get the Adafruit Electret Microphone Amplifier to work with an ATTiny85 but am having some trouble with the reference voltage.
I am using a 5V circuit because I am also powering a strip ...
1
vote
3answers
91 views
Powering Arduino Nano 12volts
I know that the Arduino Nano can handle 12 volts, and it says it is recommended to power it between 7 and 12 volts. So I am wondering do I just hack together a 12 volt adapter to a Mini-B or is it ...
0
votes
2answers
42 views
SR04 As only Transmitter and Receiver
I have taken up a "follow me" robot as my course project ,i am taking the following approach:
Use one SR04 ultrasonic transducer only as transmitter which will be with me.
Another SR04 module only ...
2
votes
1answer
76 views
SPI.h for ATTiny
Is there a different implementation of the Arduino SPI library that can be used for the ATTinyX5 series? I assume, partly because I believe the ATTiny SPI is provided via USI... I got the environment ...
2
votes
3answers
94 views
How do i make a micro-controller act as a finger on a touch screen?
I want to make a device that i can place on a capacitive touch screen and it will start tapping the screen repeatedly. Is there any way to do this with the Arduino?
0
votes
1answer
107 views
Can I add resistors?
How can I achieve 10k resistance?
I just got my photocell in the mail, totally forgot the 10k resistor. The thing is I have a lot of different resistors in the span 1, 10, 27, 37,56, 68, 82, 100.
Is ...
0
votes
1answer
60 views
Arduino board not detected when connected via USB
I have an Arduino clone called the InduinoX. It works with my mother's laptops and I can program it, but in my other laptop it goes undetected. It's last uploaded program works when connected ...
2
votes
4answers
83 views
10 million switching cycles with a hall effect sensor
I am trying to build a pull switch for my invention that can survive 10 million cycles, and in a previous question here I recieved advice not to use a mechanical contact.
The other problem is size. ...
1
vote
1answer
104 views
how to wire up LIS302DLH with arduino? (or similar, small accelerometer)
heads up: I'm new to electronics and have just started working with the arduino.
I'm trying to hook up a LIS302DLH accelerometer (spec sheet) with the arduino. ...
0
votes
1answer
101 views
IR Arduino Transmit n Receive
I am using digital IR Receiver Module and digital IR Transmitter Module connected each with different Arduino Uno. How can I transmit data like "1234" to the receiver and display data on LCD? This is ...
-5
votes
1answer
62 views
Fried Arduino uno pins. yet I can blink led 13. anything plugged in does nothing [closed]
I don't really know what happened. I was using a 5 volt relay and now nothing works. I can upload sketches to it and blink led 13 but anything plugged into it does nothing. the 5volt and grounds don't ...
4
votes
1answer
83 views
making a dc motor sing under load
I have a battery operated toothbrush that I want to generate notes with using PWM on the motor. The microcontroller used is an Arduino for testing and am able to get a bare motor to generate tones. I ...
