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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0answers
18 views
OneWire DS18B20 on mighty 1284p can't find my sensors, same sensors work w/ Duemilanove
I have uploaded the DS18x20 Temperature example sketch (unaltered, except I tried multiple pins for the I2C communication) to my proven Duemilanove and my ...
1
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0answers
21 views
Arduino building a pulse proportional thermostat
I'm not much of an engineer, but I have worked with arduino. I'm looking to see if it's possible to build a pulse proportional thermostat with a probe and an arduino. Any recommendations on where to ...
0
votes
1answer
49 views
Alternatives to an RFID reader
For my Engineering project this semester, I proposed a luggage tagging system using integrated RFID. I know you're all thinking yes this has been done, but for my final presentation I'm looking for a ...
2
votes
0answers
19 views
Power supply issues when using LiquidCrystal and WS2811
I have been attempting to run a 16x4 liquid crystal display with both an Arduino UNO and I have also used a MEGA.. I loose power to the screen (flickering, etc) when attempting to animate 29 WS2811 ...
-2
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0answers
25 views
PING))) + Arduino + Servo [closed]
I’m trying to make what I thought would be a relatively simple project involving:
4 X separate PING))) Parallax ultrasonic distance sensors connected to 1 X Arduino Uno with 4 X Servos as 4 X ...
1
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0answers
27 views
XBEE S2 RPSMA not working with batteries
I have a couple of XBEE S2 with RPSMA antenna
I'm using the xbee explorer(with arduino) and XBIB development board with X-CTU on a PC.
if I drive the arduino from the USB,,, it works... not really ...
2
votes
1answer
33 views
What type of stepper motor should I use in my project and how do I control them?
I'm building a video camera pan and tilt head. Here's what I'm getting at:
I'll need one motor to control the horizontal rotation of the camera, and one for the vertical. The horizontal motor ...
-2
votes
0answers
20 views
Building an Arduino Universal IR Receiver [duplicate]
I am trying to build a universal IR receiver on Arduino. I was thinking of using this external IC for demod+filtering of signal.
http://www.datasheetcatalog.org/datasheets/208/301092_DS.pdf
However, ...
0
votes
0answers
33 views
Infra-Red with arduino [closed]
Good Day,
I am trying to build a universal receiver transmitter with an arduino. Basically, I want to understand first how the IR protocol works on normal remotes. Is the signal transmitted modulated ...
0
votes
3answers
38 views
Piano keys touching detection
I would like to make glove with pressure sensor on each finger to detect a moment when piano player touches a key. What kind of sensor should I use? I tried use simple buttons, but it is very ...
0
votes
1answer
69 views
How to reduce a noise on a serial line
I have set up serial communication between my Arduino and a sensor stamp.
The sensor stamp in question is Atlas Scientific EC stamp.
The communication uses RT232 RS232 serial protocol.
The replies ...
-1
votes
0answers
42 views
Arduino Micro Clones? [closed]
I am using an Arduino Micro for a project I'm working on and I'm tempted to try out a clone. Has anyone had experience with using an off-brand board? My main question is regarding the IDE: are there ...
0
votes
1answer
26 views
Adding the AVR Dragon's HVPP to the Arduino IDE
I would like to teach my Arduino IDE to use my AVR Dragon's HVPP (High Voltage Parallel Programming) interface to upload compiled sketches to my boards (an ATMega1284P-PU in this case, supported by ...
3
votes
0answers
35 views
Programming an ATmega1284p with Arduino IDE and internal RC Oscillator?
I'd like to program an ATmega1284p with my AVR Dragon and the Arduino IDE. So far I have installed mighty1284p (http://maniacbug.wordpress.com/2011/11/27/arduino-on-atmega1284p-4/), after writing my ...
3
votes
1answer
42 views
Arduino Runing On && Charging NiMH batteries
I have a project I'm working on that will have an Arduino running on 2 or 4 rechargeable NiMH AA batteries. I say 2 because I might boost up the voltage to what's needed. My problem is that this ...
1
vote
3answers
47 views
Arduino and FTDI Communications
Short Version
Can I make a serial connection from an Arduino to a device with an FTDI connector?
Long Version
I have a wifi shield for an Arduino that is misbehaving. I know their is an FTDI ...
2
votes
6answers
90 views
Switch transistor with a low voltage and current
I'm designing a circuit that will use a combination of switches and resistors to allow a microcontroller to identify which switch was pressed based on the voltage read and perform a switch-specific ...
3
votes
1answer
55 views
Vinyl player emulation on Arduino
Say, you have an arduino uno + audio shield, a speaker and a jog-wheel (or mouse scroll-wheel).
And you want to play some audio-file tied to the movement of the wheel, just like you move vinyl disc.
...
0
votes
1answer
19 views
xbee and interoperability
i'm studying interoperability in the telecommunication field and i want to know we must do what to have an xbee module interoperable with other zigbee devices of other manufacturers (not Digi). I ...
2
votes
1answer
54 views
should I use 2 SPI devices on Arduino UNO/PRO or 2 I2C devices?
I am using a microSD breakout board and the accelerometer ADXL345 https://www.sparkfun.com/products/9836.
each one alone works perfectly fine, but once I put both (sharing pins 11,12,13, but with ...
-4
votes
1answer
49 views
What type of AT commands should i use? [closed]
I want to display my location information from a GPS receiver to a personal website(or any other website) using a GPRS modem connected to an arduino board through a USB host shield. My problem is ...
1
vote
1answer
53 views
Multiplexing with or without transistors
I'm doing something in where I need to multiplex 6 7-segment displays. About doing it, I found things like this:
And things in where the same thing is done without the transistors, just by ...
2
votes
1answer
53 views
Need help setting up 7X6 Piranha LED Matrix with Arduino
I need help correctly getting my parts list for a 7X6 matrix that will be part of a electronic outdoor scoreboard.
Here is my parts list so far but I am stump whether the arduino is powerful enough ...
1
vote
1answer
75 views
How will the output of a 12V transformer wall wart differ from that of a 12V SMPS brick?
I have been working on a project to drive an electric door strike from an Arduino shield of my own design. Actually, I'm using a Freetronics Eleven and not an official Arduino, which is relevant ...
1
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3answers
123 views
How do I hijack a reading from the circuit of my digital meter
I have a tri - meter (ph, ppm, temp) that reads and displays readings on three LCD screens. I'm trying to hijack the measurement at some point in the circuit and read it in through on of the inputs on ...
-3
votes
0answers
40 views
problem for serial communiation in Arduino Mega [closed]
I am using arduino mega board. In that i can't sent serial data continuous. Like wise if i inserted 15 the board take 1 first then execute hall the loop then take 5.
Please give me solution..
1
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0answers
56 views
How can I use arduino to control 4 motors speed and direction?
I consider this question different from others because of the variety of things I need this setup to be able to do.
Description:
I want to build a minimalistic motor controller capable of controlling ...
1
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0answers
39 views
Arduino - Solenoid Valves and Pumps Control (Relay Shield & Motor Drive Shields)
I’m trying to control two Diaphragm Pumps (12VDC/4.3W) and five Solenoid Valves (24VDC/10W) using Arduino Uno & Arduino Display Module.
I know there are many different ways to control these ...
1
vote
2answers
54 views
Arduino Nano v3 atmega 328p avrdude: stk500_getsync(): not in sync: resp=0x00
i get this error:
avrdude: stk500_getsync(): not in sync: resp=0x00
when trying to upload a example sketch.
pin (0,1) are not occupied;
it is the right serial ...
1
vote
3answers
61 views
Arduino Mega 2560 - Ghost Values on Analog pins
Yet again in need of your help... I have the Arduino up and running reading 2 external temperature probes.
I'm using a common ground (tried separate ground same result) and Analog Pin 0 (A0) with 1 ...
1
vote
1answer
56 views
Wiring a switch to toggle both usb power and external power on Arduino
I have a 5v Arduino Pro Micro. I am using it to run a series of motors. I am controlling it through the USB port. The USB power doesn't supply enough current to power the motors, so I am using a 9v ...
3
votes
2answers
76 views
Use PWM and ISR at same time on AVR
Is it possible to use AVR PWM outputs and ISR interrupts at the same time?
I've got a project I'm trying to do on an ATMega328P and I need 3 PWM outputs but ALSO need to be able to use ISR interrupts ...
0
votes
1answer
64 views
How to wire a Normally Open Button to a BeagleBone Black?
This one should be simple, but I'm fairly new to this.
The button has a COM and an NO terminal. Beaglebone pins can only take 6mA, so I don't have much room for error. My question is, how do I wire ...
3
votes
3answers
120 views
How can I safely power two 3v motors from a 9v battery?
I'm making a Sumo Bot from scratch and I had purchased two 1.5-3v DC motors from Radio Shack to run with my Arduino Uno v3. I'm using a 9v battery to power my Arduino alongside an RF receiver, Quad ...
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votes
2answers
34 views
Cell phone battery with solar shield, arduino [closed]
I was looking for your opinion on this product: http://www.seeedstudio.com/wiki/Solar_Charger_Shield_v2.0b
Do you think I could use a cell phone battery (3.7v 1000mA) with this? I have a standard ...
1
vote
1answer
45 views
Servo not working with Arduino
I've connected a servo(AS-18 acoms) to my arduino and I've uploaded the sweep example onto it. But nothing happens . Here's a pic.
I've connected the positive terminal of the servo to 5V on the ...
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votes
2answers
37 views
Redefining Slave-Reset-Pin in MegaISP on ATmega2560
I want to make a Arduino ISP-Shield universal exchangeable between Arduino models. For this purpose I want to use the ISP-Header in combination with Pin 10 (like the Arduino Ethernet-Shield does). The ...
1
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0answers
40 views
Most compatible Bluetooth modem to use with Arduino Uno R3?
I'm looking for a Bluetooth modem that can be connected with the Arduino Uno R3, and communicate with Android mobile device. I found one modem (the BlueSMiRF RP-SMA) but it was to expensive, and it ...
-3
votes
0answers
60 views
Audio Filtering [closed]
I have some doubts about how to implement a solution for the app that I explain below:
I want to filter specific audio sounds (truck, trumpet...) with an arduino and a microphone (amplifier + ...
1
vote
2answers
69 views
How to use electrically isolated weak signal for Arduino interrupt?
I'm trying to use the signal generator from a DSO Nano v2 to drive an Arduino interrupt for testing purposes. I have measured the output of the signal generator at approximately 13mA @ 2V DC.
I have ...
1
vote
1answer
30 views
Programming ATMega48 with Arduino Uno
I'm trying to build a circuit that uses an ATMega48 PDIP-style chip and an ATTiny26. I'm stuck on loading code onto the ATMega48 using an Arduino Uno.
I've been following these instructions. I got ...
0
votes
0answers
34 views
Reading/writing garbage when programming AD45DB161D EEPROM (SPI) using Arduino
I'm trying to program the AD45DB161D. I found two libraries and Arduino example code both aren't functioning as expected. I suspect it's hardware problem.
When reading the data and dumping it to the ...
0
votes
1answer
72 views
creating a switch using arduino's digital outputs
I'm trying to charge a simple servo that only has + and - pins. Usually I would connect it's - pin to the ground and + pin to the digital output from Arduino. This works, but the servo turns weakly ...
1
vote
2answers
78 views
Power Consumption of Arduino Nano ( Current Draw Low Power )
anyone got measurements of Arduino Nanos power consumption ?
It guess it should be less than e.g. of the Uno or Mega as the USB Part only get powered when connected via usb and so does the 3.3 ...
2
votes
1answer
46 views
MIDI sequencer timing accuracy using the Arduino
I build these music sequencers.
Only it's not exactly a sequencer, it's a physical interface for a sequencer. The sequencer is an application that runs on a laptop that the sequencer connects to, ...
1
vote
1answer
104 views
Is De0-Nano an alternative to Arduino/RaspberryPi?
Arduino and Raspberry Pi are touted as ideal programming boards for beginners and hobbyists. Could De0-Nano fit in that role, too?
What does Arduino or RaspberryPi have that De0-Nano does not?
1
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0answers
68 views
16 x 2 LCD not displaying analog inputs fed to ATmega168
I am experiencing some problems getting a display of analog inputs(current and voltage) fed to ATmega168's A0 and A1 respectively. I believe the wiring and the program are correct since the same ...
5
votes
1answer
74 views
Sensor decoupling and noise reduction
I have an Arduino UNO board, and I wanted to design a simple 'sensor shield' --since all simple sensors has 3 pins (namely, SIG-5V-GND) and it is convenient to connect bunch of them directly-- and ...
2
votes
2answers
91 views
Op-amp input stage for Arduino Due ADC - guitar signal
I am trying to design an op-amp input stage to capture a guitar through an ADC, specifically the ADC on an Arduino Due (3.3V, 12 bit). I am aware there are numerous ways to configure and bias the ...
2
votes
2answers
129 views
Expanding Range Of Analog Values From Temperature Sensor
I'm trying to build a temperature controlled relay module with an ATtiny45 ( Arduino UNO R3 as ISP ) and a NXP KTY81-222 Temperature Sensor.
The temperature range i want to monitor is 20°C to 30°C.
...
