Questions tagged [shields]

Shields are attachments that "snap" onto the Arduino board adding functionality. They are usually the same shape as an Uno/Leonardo/Duemilanove. Some examples are: the Ethernet (includes SD port) shield, motor shields, and sensor shields.

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Serial device file no longer shows up in /dev/ after working fine for months

I am using an Arduino MEGA connected to my Linux workstation via USB. I have been using this setup for several months with no issues. A few days ago, the usual serial device file (/dev/ttyACM0) ...
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297 views

Multithreading Leds and Joystick

I'm trying to made a program that turn on and turn off leds with an input and send the coordinates of joystick, but, in the loop, the arduino makes one at a time, and i want make this in the same time....
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135 views

What connects to Arduino Solar Shield?

I see there is an Arduino EnergyShield available, and am wondering what (specific) solar shield/panels/attachments can be used to power it. Thoughts? Bonus points if someone can explain how long the ...
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721 views

Android Studio project for Redbearlab BLE Shield apps

To interact with its BLE shield, Redbearlab published sample Android apps in the Play Store. The sources for the apps are available on GitHub. How can I build them in Android Studio?
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Multiple interrupts in same sketch

I am trying to create an Arduino program that combines a pulse sensor (that measures the Beats Per Minutes) and a music shield. I am experiencing some difficulties with the coding because the pulse ...
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1answer
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Adafruit Music Maker Shield - Retrieve song names from SD Card

I am currently working on a project that plays music for you. My question for this thread is, is it possible to retrieve the names of the songs within the micro SD card that is inserted into the ...
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1answer
635 views

MP3 Shield stacked on DMX Shield - Arduino Uno

We are using Arduino Uno revision 3, with TinkerKit DMX Shield rev. 4 and Sparkfun Mp3 Shield. We uploaded the Mp3 Shield example called FilePlayer and after we open the serial monitor, the interface ...
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Arduino Motor Shield and Adafruit CC3000 WiFi Shield Compatibility

My question is similar to this one: Motor shield and wireless transceiver compete for same pins But not exactly the same! I would like to know if the solution is as practical, though. I have an ...
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1answer
114 views

Wifi module for arduino shield

Recently I bought a B006RATC2E wireless shield for my Arduino One, but didn't notice that I had to buy a wifi module as well to let it work (bad surprise as the shield already cost me $30 + travel ...
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324 views

Ethernet Shield on Arduino Mini

I would like to connect my custom-made Arduino with an Ethernet shield but I'm not so sure I can. The problem My board is using the design from the Arduino Mini which lacks the ATmega16U2 which does ...
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How can I open simultaneously 2 client socket connections with GSM shield?

How can I open simultaneously two socket connections with a GSM shield? It seems that when I try to open the second connection, it is not opened, and additionally the first connection is closed. ...
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If I put a shield on an Arduino, can I use the Arduino for anything else?

I did some basic Arduino examples in the recent past, but I have never actually seen a shield for Arduino firsthand. So I wonder: If I put a shield on an Arduino (for example, the Adafruit Motor ...
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362 views

Cannot send two arguments from a WebClient

I am using the Arduino WifiWebClient to insert records into a RoR (Ruby on Rails) app. It works but it only inserts one field regardless of the number of arguments I send. For example, if I test ...
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1answer
63 views

Plugged in shield off by one, now all analogues read high

I have a prototyping shield for an Arduino Uno. I accidentally plugged the shield into my arduino so that the pins were all "off by one". I didn't think this was possible, but it turns out that the ...
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796 views

Using MULTIPLE shields on Arduino Uno R3

I'm very new to using Arduino! I'll be using Ocean Controls KTA 259 thermocouple multiplexing shield AND a Sparkfun microSD shield on my UNO--to log temperature data for a study I'm doing. The KTA ...
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2answers
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Can stackable Arduino headers be automatically soldered?

I want to design an Arduino shield with stackable headers, so it will allow other shields to be mounted on top of it. I was wondering if these could be soldered automatically. Neither wave nor reflow ...
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4answers
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3.5" TFT LCD Display is not working with Arduino Mega 2560 R3

Even I can't do similarly with my 2.4" TFT LCD in here still: 2.4" TFT LCD Shield isn't working on Arduino Mega Now, I have bought 3.5" TFT LCD display for my Arduino Mega 2560 R3 to try ...
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640 views

Sparkfun Red board and CC3000 shield not allowing multiple HTTP_GET requests.

I have a SparkFun Red board (Arduino Uno R3) with a SparkFun CC3000 shield attached. I am trying to post data to the "data.sparkfun.com" service in order to test a basic Wifi data logger. I am using ...
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1answer
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Using Arduino Nano as USB Host

I'm pretty new to microcontrollers and Arduino and since I can't find any satisfying information on my problem, I hope that you might answer them: My project is actually quite simple: I just want to ...
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1k views

Using NodeJS, socket.io and Adafruit HUZZAH CC3000 breakout board to control Arduino wirelessly?

I'm looking to build my a wirelessly controlled lamp and have a few questions. Would I be able to use the Adafruit HUZZAH CC3000 breakout board to receive commands from a website and control a ...
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3k views

H-Bridge vs Motor shield for the arduino

Assuming we wish to control a small toy car with an arduino - meaning spinning the right and left wheels forward and backward and being able to break and control the speed, where each wheel has it's ...
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83 views

How to program your Arduino Due while its connected to a display?

Im trying to program my Arduino Due and it seems that I have to disconnect the display from it every time. Is there a work around for this? Im using a 7" TFT with a CTE TFT LCD/SD Shield with a ...
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1answer
211 views

Problems stacking Arduino Shields

I'm trying to stack the Adafruit Data Logger Shield https://learn.adafruit.com/adafruit-data-logger-shield/overview onto a CuteDigi Sim900 GPRS Shield so that I can upload data (collected eventually ...
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1answer
462 views

Several SIM with Arduino GSM/GPRS shield

For some purpose we need to communicate with Arduino using more that one SIM card, but still like to use an only GSM shield. So, the idea is to use several SIM holders, to commutate each of six SIM ...
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1answer
1k views

DS1307 RTC conflicts with DS18B20

I'm working on a project to output the temperature from a DS18B20 to a 16x2 LCD while logging the temperature to a CSV file using the Adafruit Data Logging Shield. I keep getting this error when ...
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1answer
587 views

Multiple Stepper Motors in One Shield?

I need to construct 4 reactors for an experiment requiring mixing. We want to automate the mixing and at the same time reduce cost. can we connect multiple stepper motors with 5 or 6 wires on one ...
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1answer
822 views

Determine difference between 3.3V and 5V shields

How do you determine if an Arduino shield uses 3.3V or 5V on their pins? Previously, I thought all Arduino shields used 5V, since that's what most Arduinos use. However, I've been researching ...
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2k views

Can I drive this relay shield with an Arduino Due?

Sorry I'm new to electronics while I've some experience in coding. This let me very curious about the Arduino Due board: it is super powerful and I can run some C++ code that I can not with the normal ...
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2answers
916 views

Arduino Uno to drive 2 unipolar stepper motors

I need to use two stepper motors to move microscope positioning knobs in the X/Y direction. The stepper motors I have are unipolar and are 6V rated (I think). I know it's possible to drive a unipolar ...
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83 views

How can I tell which pins I will have left available by looking at a shield?

I'm very new to Arduino and came to a point where I'm interested in playing with shields, such as LCDs. For example, I really like the looks of "LCD 1602 with keypad" module, but it seems to be using ...
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1answer
456 views

Arduino Nano and a 3.3v Ethernet shield

I plan on purchasing a Nano clone, an Ethernet shield (ENC28J60), an LCD and a DHT22 humidity + temperature sensor. This will be used in a wine cellar to monitor relative humidity and temperature. ...
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3answers
5k views

Breakout vs Shield

I would like to extend my arduino uno with WIFI and I am checking different options. These are: Adafruit-CC3000-Breakout-with-Onboard-Ceramic-Antenna Arduino WiFi Shield (integrierte Antenne) ...
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2answers
1k views

How to pass rx/tx led outputs to a shield

I have an Arduino Uno. I am building a custom shield and was wondering how I would connect two of the LEDs on the shield to the TX / RX LEDs on the Uno. Digital pins 0 and 1 seem obvious, but after ...
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219 views

GSM shield SIM card troubles

So I'm trying to use the GSM shield to communicate with my smart phone. The SIM card that came with the shield only works with other devices on that network, and it's an obscure latin network that I ...
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1answer
752 views

While using Arduino Ethernet shield, do we need to explicitly select/Deselect SD and W5100 in our code?

It has been mentioned here http://arduino.cc/en/Main/ArduinoEthernetShield that corresponding libraries take care of chip select between SD and W5100 in Arduino Ethernet shield. Does it take care ...
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1answer
1k views

Controlling flexinol with an arduino board?

I am looking to wire up 16 pieces of flexinol (http://www.musclewires.com/MWFlexinol.php) using an arduino board. Ideally I would like to be able to activate them independently, meaning that they ...
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3answers
832 views

Arduino uno + XBee Shield Not transmitting when under battery power?

I have a few Arduino's along with XBee Shields communicating with one another. The problem I'm having is that, when all the Arduinos+XBee Shields are powered via USB(PC) they seem to work fine and ...
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2answers
852 views

Is it ok to share the same power rail for the arduino and a shield?

I have a two amp 5VDC power rail. I have configured a motor shield to use external DC (by moving a jumper.) Is it ok to share the rail between the arduino's 5V and Gnd pins, and the motor shield?
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572 views

Are these lcd and motor-shields stackable?

first of all, I'm kindly apologizing for asking such stupid questions, but as my electronic-knowledge is dramatically limited, you are my only hope to get my problem solved. I'm pretty new to Arduino ...
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2answers
542 views

Stacking shields without headers

In the project I am working on, I have a limited space with which I can work. I am using an Arduino Uno with 2 Adafruit motor shields, and when I stack them using normal, female stacking headers it is ...
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1answer
1k views

Cheapest way to connect android device to arduino wirelessly

I'm building a simple RC car which I want to control using android phone. The phone has bluetooth and Wi-Fi. My questions is what will be the cheapest way to connect the two devices at about 50-120m ...
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1answer
3k views

Adafruit motor shield + Adafruit stepper not working

I have the Adafruit Motor Shield V2 and an Adafruit stepper motor. I have not soldered the shield onto the Arduino (which is an Uno) yet because I don't want to make anything permanent yet. I have the ...
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1answer
479 views

Receive SMS example gives me a garbage values

When I run my Receive SMS example code, By default every time I get the same thing.I am trying to send sms to my sim card present in the Arduino GSM shield. I don't want this message. How to solve ...
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1answer
818 views

Arduino Uno + Ardumoto + BT robot works from USB but not from baterries

My Arduino UNO board is part of a small robot that works when connected to the laptop by USB but it does not when plugged to the batteries. The baterries plug seems okay, it outputs 7.8 V. My UNO is ...
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1answer
128 views

How to use components that don't have a shield?

I recently started messing around with an Arduino and I have made a few "gadgets" using shields. I then wondered how I would go about using things I can't find shields for. One specific thing I want ...
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1answer
1k views

ArduinoUno+LcdKeypad+ArduinoWifi=Pins Problems

Is it possible to connect these two shields to my Arduino Uno? After a research on the internet, I discovered that they use some of the same pins. Even so, is it still possible for me to connect the ...
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449 views

Is there a way to make wiring a bare microprocessor to a shield easier?

I currently do most of my AVR work on breadboards, but the large variety of Arduino shields and code out there makes me wonder if I'm not beating my head against the wall sometimes, and looking up ...
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3answers
664 views

XBee shield communication

I need to communicate between two Arduinos using XBee. I am new to XBee and hardware. The two Arduino Unos need to send a message (number) to each other and light an LED or play a sound, when they ...
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1answer
329 views

Is it possible to build a 1080p OSD webcam shield?

What do I need to build a shield capable of receiving 1080p video from USB camera, timestamp each frame and send the frame to memory card?
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2answers
794 views

Arduino Uno R2 and Ethernet Shield R3 compatibility

I bought an Ethernet Shield R3 for my Arduino Uno R2, but since R3 has extra pins it does not fit. Can I use the shield? Should I cut off the extra pins. What do I need to do to make it work?

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