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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19 votes
4 answers
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Parse JSON with arduino to turn on LED

Hi i'm trying to parse JSON resposne from webserver in my arduino in order to turn on and off a LED light. I'm using the wifi client repeating example to make a get request to my server: http://...
16 votes
3 answers
2k views

Is there a color LCD display for an arduino?

I currently have a Mega2560 with the LCD4884 Shield. The Shield is good for putting out text and simple pixel images. But I am wondering if there is something that has a full range of colours that ...
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14 votes
5 answers
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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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12 votes
3 answers
2k views

What is the advantage of using a motor shield if I want to use a stepper motor?

I know that it is possible to connect a stepper motor directly to an arduino (as displayed here). I know that another option is to use a motor shield (for example the Arduino Motor Shield or the ...
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11 votes
4 answers
287 views

How do I know if a board fits my requirements?

I'm new to Arduino and I saw on their website that there are many different kinds of boards. What are the differences, or to be more specific, how would I know which board meets my requirements? I ...
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10 votes
4 answers
10k views

Arduino motor shield orange/white pin usage

I have an Arduino motor shield like this one plugged into my Mega board. I would like to know some more information about the orange and white pin blocks on the board. The Arduino website has the ...
10 votes
2 answers
811 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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9 votes
4 answers
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2.4" TFT LCD Shield isn't working on Arduino Mega

Even on ebay's website it is mentioned that I can't use 2.4" TFT LCD Shield display on attach to Arduino Mega. The problem is that I bought this shield by mistake. I want to put this shield onto ...
  • 295
9 votes
4 answers
1k views

Which shield to use for GPRS?

I'm planning to build a device that would read some sensor data and send it via GPRS, eg. once per day. (Not that original, yeah.) But my problem is choosing a GSM/GPRS shield. The official ...
7 votes
2 answers
8k views

Are all Arduino shields compatible with all Arduino boards?

Are all Arduino shields compatible with all Arduino boards? Like is the Wi-Fi one compatible with the Arduino Nano & Micro as well as the Uno, etc., or do I need to be careful when buying shields ...
7 votes
2 answers
457 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 ...
6 votes
3 answers
898 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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6 votes
1 answer
163 views

LEDs on TX/RX lines interfering with the programmig of the device

I have recently designed a shield to my Arduino Duemilanove, which has 8 LEDs, on the digital GPIO, from 0 to 7, but it won't program with the shield on because the voltage drop is too much on the RX ...
5 votes
2 answers
3k views

How to measure resistance of TFT Touchscreen

I'm using a TFT Touchscreen shield with my Arduino UNO, and I'm running "tftpaint" example by Adafruit. I've noticed that when initializing the Touchscreen object, a resistance value must be provided....
5 votes
1 answer
4k 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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5 votes
1 answer
337 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?
5 votes
3 answers
2k views

Multiple GSM shields on one Arduino

I am looking for a way to listen for received text messages on multiple numbers. When I came across the Arduino and its shields, I thought to myself this might be the perfect way to do just that. One ...
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5 votes
2 answers
6k views

What's the difference between different Ethernet Shields?

I am working on a project with Arduino and I need an Ethernet shield. but after searching in some electronics shops I found there isn't only one but a lot. I don't know which one is better and what ...
5 votes
2 answers
18k views

Is the SIM900 3G? Or is the SIM900A able to connect to 3G?

I would like to state that I am not familiar with the whole cellular connection thing. But I was wondering if the SIM900/or/SIM900A is 3G and will work with PTel Mobile. I need this Arduino to be ...
5 votes
1 answer
402 views

Disconnect Ethernet Shield

I'm trying to use the Ethernet Shield and the EasyVR (voice recognition) together. The Ethernet shield uses the same pins that the EasyVR, but the easyVR works fine if I don't call Ethernet.begin(). ...
5 votes
4 answers
3k views

What options are available for connecting to a CDMA network?

I am looking specifically to connect to a CDMA carrier from an Arduino. In doing research, I came across a CDMA shield option (requires getting a CDMA module that you drop into a shield), but that ...
5 votes
1 answer
2k views

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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5 votes
2 answers
398 views

Simple Arduino Bluetooth Shield Android Display [closed]

I need help with my Arduino code. Here is my setup: LM35 connected to Arduino with output connected to Analog 0. Temperature computation work and serial monitor displays the correct reading. I want ...
4 votes
3 answers
2k views

How to directly solder wires to protoshield to connect them to Arduino pins

I bought an assembled Arduino Uno protoshield version 5, similar to this: I bought it because I would like to solder wires from Arduino IOs, and I was quite disappointed with the impossibility to do ...
4 votes
2 answers
4k views

Controlling LED from web server

I have a LED attached to my Arduino wifi shield that I want to control from my PHP web server. In terms of communication, should I Make my Arduino a web server and then communicate with PHP web ...
4 votes
1 answer
139 views

Compatibility between shields

Despite that I am new to Arduino, I am tasked to invent a serious alarm system and I chose Arduino. I study electronics, but virtually I am a software programmer and C is my area of expertise. I ...
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4 votes
2 answers
2k views

How can I connect the Tamiya double gearbox to Arduino Uno?

I'm working on building my first robot. this is my first foray into DIY electronics. I already have an Arduino Uno, and I have ordered the Tamiya double gearbox here. My goal is to control the gearbox ...
4 votes
1 answer
130 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 ...
4 votes
2 answers
338 views

How do I program my Arduino Yun Shield when I keep getting this AVRDUDE error message?

The error message is: avrdude: AVR device initialized and ready to accept instructions avrdude: Device signature = 0x1e950f avrdude: Expected signature for ATmega32U4 is 1E 95 87 Double check ...
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4 votes
1 answer
285 views

Problems with green TWI (I2C) port on Arduino Braccio Shield

Summary: The green TWI/I2C port on my Braccio shield I2C port hasn't worked for me so far. Looking for advice or information please. Detail: I'm using the Arduino (Tinkerkit) Braccio robot arm for ...
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4 votes
1 answer
58 views

What controller should i use?

I'm working on a little DIY project in which I intend to make my own dataglove. Now I'm kinda stuck on choosing the right microcontroller. And since it can be quite costly, I thought to ask for some ...
4 votes
2 answers
728 views

Interfacing Logitech Joystick to Arduino and interrupt a while loop

I am working on a project of a robot arm. The joints are made of servo motor. The basic function can be describe as: The robot arm (the servos) were moved manually by the Logitech joystick. The user ...
4 votes
1 answer
217 views

Advanced Arduino Project Help

So, I am an Engineer working on a very time tight project. I want to create a system capable of collecting data from a Photodiode and compiling it in a way that will separate data into four columns ...
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4 votes
2 answers
1k views

How can an Arduino Mega 2560+Wifi Shield 2.0 (SeeedStudio) receive data from database in a XAMPP server on my PC?

I'm trying to connect my Arduino Mega via Wifi to my XAMPP server. My main objective is get a value from my database and store it on a variable in Arduino code. With this new variable I'll be able to ...
3 votes
5 answers
211 views

Picking an Arduino

I'm looking to develop my own personal SmartWatch, hardware, software, and all. My problem is starting off on the hardware portion of it; more specifically what platform I should build it on. I ...
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3 votes
4 answers
498 views

Can you help me trim my code?

First of all I want to be clear, I'm not very skilled in programming methods, all the C I learned was for various Arduino projects. That being said, I just finished a project that reads some data ...
3 votes
3 answers
2k views

Arduino Mega vs servo shield

I am currently designing a hexapod with a total of 18 servos. I come from a computer science background and know little about electronics, so there is one thing which puzzles me. Adafruit is selling ...
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3 votes
3 answers
451 views

How does the Space Replay record audio?

The Space Replay A hovering object that explores and manipulates transitional public spaces with particular acoustic properties. By constantly recording and replaying these ambient sounds, the ...
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3 votes
1 answer
3k views

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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3 votes
2 answers
113 views

Stacking 3 of the same shields on top of each other and instructing them in sync

Context: I have an audio track separated into individual channels grouped by frequency and speaker location. I need to play all three of these channels simultaneously and perform instructions like ...
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3 votes
1 answer
2k views

How to save data to SD card using Memory Shield Module SPI

I am trying to save some data to the SD card using the memory shield module that I read from HC-SR04 Ultrasonic Module. The data that gets printed indicates error. This is how my SD card module is ...
3 votes
1 answer
2k views

How to connect GPS Neo-6M module to GSM Shield SIM900 V2?

I'm doing my final year project, My project is based on "Arduino Real Time Gprs/Gsm & GPS Tracker". So Now I have purchased the hardware components such as: Arduino UNO R3 GSM Shield ...
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3 votes
1 answer
316 views

Attempt stacking 'CAN-BUS' and 'USB Host' Shields on Mega 2560

I've run into a case of 'In theory it works, but in reality'.... I'm using the CAN-BUS Shield V1.2 from Seeed studio. Many things are written in broken english, so I'm starting to wonder if I can ...
3 votes
4 answers
23k views

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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3 votes
1 answer
836 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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3 votes
1 answer
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 ...
3 votes
1 answer
4k views

Using SD card shield on Arduino Due

I have a Seeed Studio SD card shield (V3) that I am trying to use on my Arduino Due. I am having trouble using the SD examples that come with the Arduino IDE. They worked fine on my Arduino Uno by ...
3 votes
0 answers
333 views

Is Arduino WiFi101 library fully compatible with Arduino MKR1000 with WiFi HW?

Will all the classes in this library work with the MKR1000 with wifi hardware? The guide mentions "wifi shield". So, does the library work exactly the same with the Arduino MKR100 (with the onboard ...
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3 votes
0 answers
1k views

Using Johnny-five API with RFID Controller Shield

Is it possible to use the Adafruit PN532 NFC/RFID Controller Shield with the Johnny Five API? I've searched the depths of google and I'm unable to find anything so far. If it is possible, how can I go ...
3 votes
0 answers
6k views

Sending AT commands to a gprs shield using serial port

I have a GPRS shield connected to an arduino uno board, i want to use the shield to send sms and do phone calls, from a C# Wpf application, the arduino is connected to the application using the serial ...
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