Arduino Stack Exchange
Arduino Stack Exchange

Questions tagged [adafruit]

Adafruit Industries is an open-source hardware company founded by Limor Fried in 2005. Use this tag to mention issues with Adafruit products or tutorials.

Adafruit is one of the companies supplying Arduinos and Arduino-compatible products. Their web page is http://www.adafruit.com/.

Adafruit has a forum - initial queries about their products or tutorials would be appropriately directed to there.

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Turning all LEDs on (FAST.LED)

In Fast.Led lib for arduino there is a code to turn off all leds FastLED.clear (); Is there also a shortcut to turn all LEDs ON, and with a specific color
Niles
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Streaming audio from PC to Arduino over WiFi

Say I wanted to, purely hypothetically, set up a pirate radio station by connecting an Arduino to a WiFi network away from home, streaming music to the Arduino, decoding it, and broadcasting it with an FM transmitter. Given an Arduino (Genuino)…
Joris
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How can I reduce the size of my sketch?

Looks like I'm overshooting the storage of my Adafruit Trinket: Sketch uses 5,600 bytes (105%) of program storage space. Maximum is 5,310 bytes. Global variables use 109 bytes of dynamic memory. Any tips for reducing the footprint of my…
Shpigford
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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. Library default is 300, but a comment in the…
jotadepicas
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Ooops, no LSM303 detected ... Check your wiring!

History I have an Adafruit 10DOF IMU Breakout which has been working on my Mega for some time. This morning my program did not run so I starting troubleshooting. Scenario I eventually plugged the IMU breakout into my Uno with the *out-of-the-box…
Jacksonkr
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Why is my Adafruit motor shield not spinning my motors?

I'm using the Adafruit Motor Shield v2.3. I'm powering the Arduino with a USB cable and I'm powering the motor shield with a 9 volt battery. I removed the vin pin, and I'm using this tutorial/code to make the DC motor spin. I've tried 3 different…
Pikamander2
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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 shield? Currently I am renaming the song files to…
Imayan
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Adafruit_LEDBackpack library interfering with analog input reading

I'm trying to do something I think would be simple. I'd like to read the input of a electret microphone board and update the Adafruit 24-segment LED Bar Graph. I got each individual item working perfectly: I can read the input of the microphone on…
OneCleverMonkey
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How can a USB keyboard emulator (TrinketKeyboard) type Unicode characters?

I've got an Adafruit Trinket microcontroller set up using this USB keyboard tutorial, and it works great. I'd like to set up my project to type a shruggie ( ¯\_(ツ)_/¯ ) when I press a hardware button. My naive solution…
Jeremy Wadhams
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Absolute noob looking for troubleshooting help

My 10-year-old son went to a "Robotics Camp" and came home with a non-functional Arduino robot. I figured it shouldn't be too much trouble to get it working. He swears he had it operating at the camp, but our best efforts notwithstanding, we were…
T1M0THY
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Unable to use RGB matrix and the serial monitor at once

Recently I bought the following matrix: https://learn.adafruit.com/32x16-32x32-rgb-led-matrix/overview I own an Arduino Uno for those who are interested. I got the 32x32 variant and I am very happy with it. I managed to connect all the wires…
Quartermain
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Why won't Wifi Shield detect any networks? Even really close

I just purchased an Adafruit Wifi Shield CC3300 and strapped it onto my Arduino Uno board. I'm running this basic sketch that I found to test the functionality of the Wifi Shield: http://arduino.cc/en/Guide/ArduinoWiFiShield#toc1 Of course in my…
Saqib Ali
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How to install Adafruit motorshield library in arduino-cli

I need to install this library using the arduino-cli software. I don't know what name to use for the library. Using arduino-cli lib install I have tried Adafruit_MotorShield, Adafruit_MotorShield_V2, and other random combinations and…
user171780
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Pass Color to a function without using a specific Adafruit_NeoPixel

I'm initializing my strips as an array: // Declare NeoPixel strip array: Adafruit_NeoPixel strip[] = { Adafruit_NeoPixel(LED_COUNT[0], LED_PIN[0], NEO_RGBW + NEO_KHZ800), Adafruit_NeoPixel(LED_COUNT[1], LED_PIN[1], NEO_RGBW + NEO_KHZ800), …
Johnny Rollerfeet
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When I verify the sketch I get several errors

I am extremely new to Arduino coding and have downloaded a sketch for the PCA9685 to use with model railroading and turnout control. When I verify the sketch I get several errors ... I don't even know how to resolve and could use some assistance. …
Wayne Hensley
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