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.

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1answer
218 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
298 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
132 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
104 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
28 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
21 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
848 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
1k 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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1answer
748 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
130 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
3k 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
117 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
617 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
43 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
3k 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
1k 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
683 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
2k 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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1answer
1k 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
180 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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2answers
182 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. For my purposes, I need more analog inputs than the Leonardo, and the only other option I can find ...
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1answer
734 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 ...
1
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1answer
429 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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2answers
4k 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
151 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
55 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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2answers
2k 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
117 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 ...
-1
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1answer
575 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. ...
2
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0answers
327 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 ...
0
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1answer
4k 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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2answers
835 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
245 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 ...
0
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1answer
282 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 ...
0
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0answers
982 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 ...
0
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1answer
802 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 ...
0
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2answers
1k 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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0answers
270 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 ...
0
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3answers
256 views

Add id to raw data in an array

I am working on an Arduino project, where I am transmitting GPS data between two Arduinos. This code can transmit the raw GPS data: int a = Serial1.available(); if(a){ uint8_t hej[a]; for(...
0
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1answer
115 views

Arduino Yun not showing anything on the serial monitor

I am having issues with the ArduinoYun. It's not showing any data in the serial monitor. The sensor lights up when I plug it in but that's about it and the code seems to compile but nothing is coming ...
2
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1answer
1k views

Updating firmware on Adafruit Huzzah ESP8266

tldr: I'm trying to re-flash a previously working Adafruit Huzzah ESP8266 breakout module to use the latest AT firmware. The re-flash doesn't seem to be working and I'm getting rather confused. This ...
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1answer
632 views

Problems connecting Adafruit Feather M0 to network

I'm trying to connect my Adafruit Feather M0 board to an existing WiFi network. Whenever I use the "ConnectWithWPA" example sketch, I receive "Attempting to connect to WPA SSID: "MyNetwork" " in the ...
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1answer
179 views

The sensors don't send correct data

I try to make a weather station, but I don't understand why it doesn't work. I had tried to read a lot of the sensors but I doesn't find my errors. The code: #include "DHT.h" #include "...
2
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2answers
2k views

Adafruit RTC begin() not returning false

I am programming my arduino with the capability to keep time with the DS3231 from Adafruit. I do not have the module yet, but am trying to figure out the rest of the build without it. However, it ...
0
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1answer
656 views

Adafruit Feather 32u4 Bluefruit LE and HC-05 Bluetooth module

Is it possible to connect an Adafruit Feather 32u4 Bluefruit LE with an HC-05 Bluetooth module? I am making a heart rate monitor using an Adafruit Feather, but it is unable to send the data to ...
0
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1answer
76 views

Adafruit Motor Shield and Bridge Library for Yun Shield

I am using the Leonardo board with the Adafruit Motor Shield v2, 2 steppers and the Yun Shield. The yun shield and steppers all run harmoniously, however, as soon as I do Bridge.begin() and anything ...
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1answer
178 views

How to vibrate Adafruit Feather 32u4 Bluefruit LE device? [closed]

I have 11 Adafruit Feather 32u4 Bluefruit LE devices. I want to vibrate my devices using a signal through an app. Is there any signal (Code from app like 0x56-NeoPixel checking, 0x43-clear color) or ...
1
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1answer
5k views

User configuration file does not exist or is not a regular file, skipping

I am facing issues while uploading sketch to Adafruit Feature 32u4 Bluefruit LE devices. When i try to upload Blink demo it was working fine and my device also blinking, But bellow error i am getting ...
0
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2answers
62 views

Pointer problems using Adafruit MotorController

This may be a very simple problem but it has had me going round and round in circles, it is VERY similar to this [ Problem with wrapping Adafruit Motor Controller function calls in a class] question ...
5
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2answers
2k 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....

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