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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.

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How to set CS pin on Beetle BLE/Bluno Beetle to Adafruit SD Card Breakout - Initialization Failed!

Hi I have a Beetle BLE (https://www.dfrobot.com/wiki/index.php/Bluno_Beetle_SKU:DFR0339) and I am trying to connect an Adafruit MicroSD card breakout board+ (https://www.adafruit.com/product/254) via ...
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1answer
22 views

“exit status 1” error when invoking “useInterrupt” method

for context to this post you can catch up on this post I am working with an Arduino Leonardo and Adafruit Music Maker shield. I am trying to use the startPlayingFile method via the interrupt pin ...
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1answer
27 views

Blynk app, DotStar bluetooth control code help

This is my setup: Arduino Mega; HM-10 bluetooth module (bought off ebay, so not sure if genuine but works); Adafruit Dotstar addressable LED strip; iOS Blynk app; Hardware-wise, everything is ...
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1answer
12 views

Adafruit Huzzah ESP8266 Battery Power issue

I'm trying to connect a ~5.5V (2 x 3V coin cells in series, but their voltage drops a little) to the VBat (or V+) of my Adafruit Huzzah ESP8266 module (not the black Feather one, the smaller blue one: ...
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1answer
24 views

eclipse photon with cdt-arduino plugin can't upload sketches

i've recently decided to give eclipse-photon-cdt a shot. i use it with the built in arduino plugin, downloaded my feather m0 board config and tried to upload an empty sketch. failed, the console shows ...
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2answers
58 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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1answer
23 views

How we can implement the interrupt? [closed]

I want to implement the Interrupt on the Adafruit_RGBLCDShield Select button to start/stop the data logging?
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1answer
9 views

How to share/Reassign analog pin for two Adafruit libraries for two adafruit hardware

I'm attempting to use the Adafruit BMP180 and Adafruit 16x2 RGB LCD Display together on the same Arduino Uno R1. Both the pieces of hardware and their libraries use Analog Pin 4 and 5. Is there any ...
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1answer
30 views

Unable to Configure MQTT Client ID using Adafruit MQTT Library

I am utilizing the MQTT library that Adafruit has created, located here, and the library itself works wonderfully - however I am finding myself unable to edit the Client ID or configure the PINGRESP. ...
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2answers
33 views

How do I read addresses on multiple DS2413 1-Wire GPIO Breakouts, using the Adafruit sketch?

I am using three DS2413 1-Wire GPIO Breakouts from Adafruit connected to an ESP8266. I tested the DS2413 breakouts using their example sketch and it works fine for just one DS2413. But I cannot ...
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0answers
12 views

Interfacing STM32F401 Discovery Board with Ultimate Adafruit GPS Module

After having successfully tested my GPS module with my Arduino UNO, I'm looking to do so with the Discovery Board. The connections seem a little puzzling, as in I can't understand if I need male/...
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1answer
30 views

Parsing example code in Adafruit GPS library with Ultimate Adafruit GPS

I've synced my Uno with the Arduino IDE and I'm using the below code to get the GPS coordinates. // Test code for Adafruit GPS modules using MTK3329/MTK3339 driver // // This code shows how to ...
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1answer
32 views

Adafruit Feather 32u4 FONA KEY Pin

I received a Adafruit Feather 32u4 FONA as a gift and have read the great, comprehensive document Adafruit put have put together surrounding pinouts, examples etc for the board. I am having issue ...
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1answer
187 views

ESP8266 light sleep - can't wake up

I am attempting to implement a light sleep mode on an esp8266 (feather huzzah) which, when a button is pressed, wakes the system up so that it can continue its normal task. I cobbled together some ...
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0answers
21 views

Grounding analogue signals through ads1115

Quick question - I have some pretty expensive gas flow sensors outputting a 0-5V signal, which need at least 2.5 KOhms minimum load. Can I connect them to the Adafruit ADS1115 breakout (ADS1115 chip, ...
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2answers
42 views

Too many amps for Step motor

I have an adafruit motor shield and attached the Nema 17 stepmotor. Now the big problem is trying to power it without it overheating. I was originally using a 12v 6a power supply but quickly switched ...
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0answers
25 views

Adafruit Feather unable to upload code

I am using Adafruit Feather RFM69HCW Microcontroller. I am having difficulty uploading code in any Adafruit Feather boards. We have a project that is live on the field and it needs code changes. I ...
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1answer
134 views

Schematic for the adafruit motor shield v2.3

I am trying to locate a schematic for the Adafruit motor shield v2.3. It has many ports and currently I have found little to no explanation of what is on the board. I located this picture which ...
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2answers
80 views

Understanding how to power objects with a relay (featherwing, feather huzzah)

I am trying to learn how to control a relay to power various household objects. I bought a power relay shield for an adafruit feather huzzah, and I have just set up the arduino blink sketch to provide ...
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2answers
55 views

Arduino Switching Between Loops IR Remote

I've been working on an LED strip project. However, I've come to a stand still at the moment. Within the program I am wanting to assign different lighting effects to each button on my IR remote. I am ...
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1answer
204 views

Increase sample rate in ESP32 board

For my final project on the university as a Systems Engineer, I'm working on a "electronic stethoscope", which is giving me a lot of headaches. I bought a Adafruit Feather ESP32 Huzzah (https://learn....
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179 views

Can't get I2C + SPI working on Wemos D1 Mini Pro

I've been struggeling allday to get I²C and SPI working on the same time on my Wemos D1 Mini Pro, i want to use a BME280 + the Wemos D1 Mini 1,4' TFT Shield. If i comment one or the other out, the ...
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1answer
49 views

Arduino SocketIO library not working over HTTPS

I am currently using this Socket.io library to be able to send data from the Adafruit Feather HUZZAH (based on ESP8266) to my NodeJS server. It works like a charm on my local webserver, never failing ...
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1answer
37 views

Arduino Uno with Adafruit CC3000

I am using Arduino Uno with Adafruit CC3000 wifi shield to connect to the internet and get data for Arduino. Everything works fine but I can't figure out how to use HttpClient library. The code is: #...
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1answer
27 views

is an atmega 2560 board compatible with the adafruit trellis

i want to build a custom midi controller for my computer and yes adafruit has a mini untz project however for my purposes i need more analog inputs than the Leonardo and the only other option i can ...
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75 views

RGB LED strip (WS2812B) won't respond to setPixelColor (Neo Pixel)

im working on a project with an 144 LED/m strip driven by an Adafruit ItsyBitsy M0 Express. To test the LED strip I connected it directly to the ItsyBitsy driving only 5 LED's. Now I'm trying to run a ...
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1answer
83 views

Configuring Accelerometer on BNO055 sensor

I'm using the BNO055 9DOF Adafruit sensor to measure the acceleration/orientation. How can I change the configuration of the accelerometer from 4G (default) to 16G? What I already know: The ...
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1answer
84 views

add ID number to the feather m0 bootloader (flash)

I'm trying to add a serial number to the bootloader's flash area of Adafruit Feather m0 board. Seems like feather m0 0-0x2000 area on the flash is non writable by the arduino sketch. i wanted to add a ...
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33 views

Using the Adafruit_PWMServoDriver within a function 'crashes' Arduino Nano

Just switched out an Arduino 101 for a Nano and having trouble since then. When the following function is called, the Nano stops responding or doing anything. void thumbMove() { //interupt the ...
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0answers
16 views

Arduinos do not show up on Arduino IDE or device manager [duplicate]

I have two Arduinos, an Adafruit Feather 32u4 Fona, and an Uno. The Uno does not show up in the device manager when plugged in, the Adafruit Feather does not show either. Neither show in the IDE.
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2answers
533 views

how to send data to Adafruit Bluefruit Feather (32u4) over bluetooth?

Sup yo. I have my Adafruit Bluefruit Feather all wired up. It's lovely. I've got it responding to commands over the USB serial, activating an array of octocouplers. It's terrific. Here's the ...
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1answer
56 views

Rfid with Adafruit fingerprint together not working in Arduino Uno

I have edited my Code and now the issue is both are working but not together #include <Key.h> #include <Keypad.h> #include <Adafruit_Fingerprint.h> #include <SD.h> #include &...
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1answer
29 views

adafruit LSM9DS0 Library - ok with Uno but compile error with LinkitOne?

I'm calling an adafruit Flora LSM9DS0 magnetometer using the Adafruit library with the following sketch: #include <Wire.h> #include <SPI.h> #include <...
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0answers
120 views

Trying to connect to Cayenne IoT server after initalizing SPI display

I am trying to simultaneously view sensor values on Cayenne dashboard and on a TFT LCD touchscreen connected to my Aruino Uno (ATmega328p). I am using a Adafruit_ILI9341 touchscreen running on SPI ...
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2answers
380 views

Burning the Bootloader on Adafruit Feather 32u4

So, the default bootloader in Arduino is oddly set to erase EEPROM with every reboot, rendering the EEPROM, well, useless. I found where the fuses are set in the boards.txt file, but getting this ...
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1answer
62 views

Adadfruit Trinket software not running on ATtiny85

I have an application that uses a pair of nRF24L01+ as a simple RF link between a camera PC sync output and a set of LED flashes. The important factors are power and low latency - hence the 2.4GHz. I ...
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105 views

l293d motor shield LED glowing servo running but dc motors not running what to do

I was working with 4 dc motors and servo motor connected with L293D motor shield everything was working properly.I disconnected the dc power jack to upload a new program on it and for that when I ...
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1answer
95 views

How can i check for valid fingerprint and no finger detected? [closed]

i am working in arduino fingerprint sensor with adafruit. i am using two leds to check if fingerprint is valid. my problem is that i need three cases instead of two. 1 case: when fingerprint is valid. ...
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92 views

Adafruit Huzzah Feather not resetting and serial monitor garbage

Hi there, I have an Adafruit Huzzah Feather project laid out as you can see in the diagram above. Currently I am having trouble getting it to reliably reset and start the sketch. More often than ...
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1answer
182 views

A SoftwareSerial library for SAMD boards

So I've got three boards that I'm using to test this (modified) code: int sensor1Pin = A0; int sensor2Pin = A1; int sensor3Pin = A2; float sensors[] = {0,0,0}; void setup(){ Serial.begin(9600); } ...
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261 views

Writing arrays to SD card without looping

I'm using Adafruit Feather M0 with the Adalogger FeatherWing to time-stamp and save sensor readings in an SD card. Speed is critical so I want to create two arrays, one for the readings (int) and one ...
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2answers
96 views

How to detect an read buttons pressure on touchscreen [closed]

I made simple 3 red buttons like this: #include <SPI.h> #include "Adafruit_GFX.h" #include "Adafruit_ILI9341.h" #include "URTouch.h" #define TFT_DC 9 #define ...
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1answer
58 views

Adafruit IO example won't compile, library required is correct version

I have Arduino IDE 1.8.5 installed, and also Adafruit IO Arduino 2.6.0 and Adafruit MQTT Library 0.20.0. With the Adafruit IO lib comes a set of examples, and I wanted to use example ...
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1answer
96 views

Adafruit Motor Shield steppers not turning

The Adafruit Motor Shield is connected to 2 steppers which are wired correctly and work when I just use the onestep function. I understand that I cannot drive both at once, so I am using a while loop ...
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1answer
346 views

How to send string over bluetooth LE from Arduino [closed]

How do you send a string over BLE from Arduino? (and is it any different for an Adafruit Feather 32u4?) Background: I have force sensitive resistor (fsr) sending an Int value. I would like to convert ...
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492 views

Adafruit ESP32 device working on OSX 10.13 but not on OSX 10.11 on older machine

I'm new to Arduino - just got an ESP32-based Adafruit Feather HUZZAH32. I got it up and running on my Macbook Air (High Sierra) with no problem, following the instructions at this page linked from the ...
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23 views

Adafruit Music Maker and Keypad

i am trying to program an arduino so when I press a certain keypad password it plays a particular audio file and when I press a different password an alternative audio file plays. For some reason I ...
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1answer
226 views

LSM9DS1: Inconsistent data from an accelerometer

I'm currently getting inconsistent data from the accelerometer of my Adafruit LSM9DS1. To be more precise I either get a value close to the correct gravity (eg. 9.496515) or some reading like it was ...
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2answers
294 views

Error using Adafruit Feather M0

I am trying to upload an empty program on the Adafruit feather to see if it connects to my PC. So far, it isn't. I'm running a Windows 10 and I followed this guide: https://learn.adafruit.com/...
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69 views

Adafruit FT6206 controller won't start after unrelated code changes

I am using an Adafruit HUZZAH32 Feather with the ESP WROOM32 module and an Adafruit 2,8" cap touch Display. When trying my code I encountered a strange problem: one specific line of code lets the ...