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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Adafruit Micro-SD breakout not initializing on MEGA 2560

] [I am having quite a bit of trouble trying to get my Arduino MEGA 2560 to read my micro-SD card. My wiring is as follows: Breakout Arduino 5v 5v Gnd Gnd CLK 52 DO ...
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20 views

Adafruit Feather M0 Basic Proto doesn't show up

I bought a Feather M0 basic from Amazon here. I installed all the board definitions and stuff from here I restarted the IDE and when I plugged it in, the Feather doesn't show up in ports or device ...
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3answers
50 views

DC motors only run in one direction

I'm quite new to Arduino and am making my first proper project, an obstacle avoiding robot. I'm using an Arduino Uno and a motor shield compatible with the Adafruit motor driver library. I'm trying ...
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2answers
242 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
77 views

Logging data to SD card from software serial

I have an Arduino Uno and an Adafruit data logging shield and I have connected a digital pressure sensor that uses serial communication. The sensor requires a character to start transmitting data. I ...
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3answers
269 views

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
548 views

LCDs interfere with Adafruit datalogger SD card function

I am using the Adafruit datalogger shield (Rev B) and a pair of cheap 20x4 LCD I2C displays. The displays have a small I2C I/O expansion module board on the back. The LCDs I am using are these; ...
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1answer
44 views

Getting two trinkets to talk to each other via the serial pins

I'm trying to make a quick proof of concept of two trinket M0s talking to each other via their RX and TX pins and I'm not able to get it working. I uploaded sender and receiver sketches to two ...
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1answer
2k views

Did not find fingerprint sensor :( Arduino Mega 2560 Adafruit Fingerprint Sensor

I'm getting the following error when I try to enroll fingerprints using the Arduino Mega 2560 microcontroller along with a Fingerprint Scanner: Did not find fingerprint sensor :( The exact devices ...
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1answer
45 views

Pin headers too long for the sensor i bought

https://www.amazon.co.uk/Adafruit-TCS34725-Color-Sensor-Filter/dp/B00OKCRU5M/ref=sr_1_3?keywords=adafruit+rgb+sensor&qid=1559653098&s=computers&sr=1-3 Just bought this colour sensor for a ...
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2answers
87 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
58 views

Red LED not turning off on Adafruit Circuit Playground Classic

When using the traditional Blink example program, the light blinks as expected. Even when writing from scratch digitalWriteing pin 13 to high and low repeatedly works fine. The problem is when I try ...
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1answer
44 views

Adafruit Circuit Playground Express interrupt not working

I have interrupts attached to pins 4 and 5 which correspond to the left and right inbuilt buttons on the circuit playground express (https://learn.adafruit.com/adafruit-circuit-playground-express/...
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3answers
6k views

What components I need for a small GPS tracker

I am new to Arduino and want to create a graduation project for my university. I am thinking to create a GPS tracker that can be attached to a cloth to track kids, for example. So the requirements for ...
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1answer
53 views

How to add if condition with RFID Example

Using a Arduino Mega 2560 and PN532 NFC/RFID module, I want to be able to scan a card and see if it's value is (0xF0, 0x21, 0x5D, 0xA7). It should print "accepted" in the serial monitor. However ...
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26 views

Modifying NMEA of Adafruit GPS

I use a Adafruit Ultimate GPS Breakout - 66 channel w/10 Hz updates to collect data on animal movement. I have two questions regarding the produced NMEA: - there are some information about PGACK, ...
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1answer
89 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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1answer
832 views

Adafruit Gemma unrecognised USB device on Windows 10

I have a V2 Adafruit Gemma from the Gemma starter pack, and I'm running Windows 10 Home (version 10.0.14393), on a 64-bit laptop. Following the Introducing Gemma guide I've installed the Adafruit ...
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1answer
38 views

HUZZAH ESP-8266 (by ADAFRUIT): How to use with the ARDUINO R3

I have recently purchased a ESP-8266 HUZZAH by adafruit. I'm kind of new to the whole arduino concept. I would like to know how I would be able to utilise this breakout board with my Arduino to do ...
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1answer
140 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
154 views

How to control RC power switch with Arduino-/Adafruit-Board?

I want to control (switch on/off) a solenoid valve via an RC power switch and an Adafruit M0 Feather Bluefruit LE. The RC power switch is this one, and this is the Adafruit Board Pinout. My ...
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1answer
464 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
2k 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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2answers
763 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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1answer
2k views

Using MMA8451 accelerometer to count steps

I'm trying to use an Adafruit MMA8451 accelerometer to create a pedometer-type device that counts steps. I'd like to initiate a counter that says "if the x-axis readout is > some threshold, add 1 to ...
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1answer
51 views

Using 18650 batteries with a 3.7v to 5v boost converter [closed]

I'm looking to set up a 1-meter strip of WS2812B LEDs (60 LEDs) with an off-the-shelf RF LED controller with a remote. The LEDs want a 5V supply - I've tried running them off 3.7v but the colour ...
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1answer
120 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
43 views

Help with code for pushbutton connected to adafruit motorshield v2

can anybody assist me with a code? I am using arduino uno with adafruit v2 motor shield stacked on top. I am using a pushbutton and one DC motor and I want the state of the push button to change after ...
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1answer
3k views

Motor shield power from Arduino pro mini 5v RAW Pin 150mAh cannot run servo

linked to my old question, Pro Mini 5v with Adafruit motor shield v1 power sharing problems I figured out and use one 7.2v battery (6 AA cells), and link it with RAW pin to Pro mini and join its 5v ...
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1answer
250 views

How to change speed of multiple servos acting at the same time with PCA9685 module?

I'm using the PCA9685 module with its Adafruit library. In my code I have one object of the servodriver class that has 14 channels (controlling 14 servos basically). void Positioning(){ ServoDriver....
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4answers
63 views

How can I hook up multiple MMA8451 accelerometers, (I2C protocol) using one Arduino Mega?

How can I hook up four (adafruit) MMA8451 accelerometers (using I2C protocol) using one Arduino Mega? What I'm confused about is I only have one SDA and SCL on the Arduino Mega obviously. So how can I ...
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1answer
478 views

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 ...
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2answers
190 views

CC3000 gets wrong address when connecting to wireless AP

I tried using both the SparkFun and Adafruit CC3000 libraries first with what I actually wanted as a program, but when that didn't work, the examples for those libraries, and I always seem to get the ...
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1answer
2k views

Adafruit Huzzah espcomm_open failed

I recently bought an adafruit huzzah as well as a serial to usb cable to connect it to my computer running windows 10. I was able to get the board set up in arduino following the directions found here....
2
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1answer
47 views

Adafruit Feather 32u4 BLE compatible with Software SPI?

Let me preface by saying that I am not super experienced with electronics. I have an Adafruit Feather 32u4 that is using Hardware SPI to communicate over Bluetooth. Unfortunately, I'm also hoping to ...
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2answers
402 views

Get accelerometer values from BNO055 using adafruit's Unified Sensor Library

If I understand correctly using the Adafruit_Sensor one can extract information from the sensor specific information. These sensors are currently mentioned in the README. I am using the BNO055 for two ...
2
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1answer
653 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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0answers
51 views

Code stuck on mag.getEvent(&event); in HMC5833L Compass

Last week I created some code in which I can run a Ublox GPS NEO-6 and a magnetometer HMC5883L together. Which at the time worked brilliantly. Yesterday I have attempted to run the code again, with ...
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1answer
128 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
409 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 ...
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1answer
140 views

BNO055 restore offsets sketch from Adafruit does not make sense

The restore_offsets sketch from Adafruit BNO055 In some way does not make sense. I am using an ESP32 and storing the offsets of BNO055 in its NVS (non-volatile storage). Steps I start calibrating ...
1
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1answer
128 views

Adafruit esp32 Feather Failing to compile

So yesterday, I was able to upload/compile given example code to the Esp32 Huzzah board. Today I couldn't even compile. Even carefully using the tutorial adafruit provides. I was getting errors as ...
1
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1answer
140 views

How to get the weather kit with anemometer working using arduino (UNO)?

I tried to build a weather station with anemometer and My setup is, SwitchDoc Labs' anemometer kit (which is equivalent to sparkfun anemometer kit) connected to the grove weather-pi board with rtc ...
0
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1answer
46 views

Adafruit RGB LCD w/ Shield kit connection to arduino uno? [duplicate]

I have a adafruit rbg 16x2 lcd with shield kit and am trying to connect it to an arduino uno. The only thing is the assembly instructions have the lcd basically using every pin on the arduino, even ...
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2answers
35 views

Can the 'Adafruit Non-Latching Mini Relay FeatherWing' be used with an Arduino microcontroller such as an Arduino Mega 2560?

Can this relay found here: https://www.adafruit.com/product/2895 Be used with an Arduino Mega? The description given seems to specify that you should hook it up to their dedicated 'Featherwing Board'...
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0answers
52 views

Reading Multiple RFID tags / Reading and ignoring/holding the tag

I'm currently doing a project where ideally I will have multiple objects with RFID tags on them that are placed on top of a Adafruit PN532 RFID Shield connected to a Arduino Uno Wifi Rev 2. The idea ...
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0answers
97 views

Bluetooth gamepad via Adafruit Feather M0 Bluefruit BLE

I'm trying to build a Bluetooth-enabled gamepad out of an old Playstation 1 controller, using an Adafruit Feather M0 Bluefruit BLE. I've programmed the board as a Keyboard HID and everything works: ...
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0answers
92 views

Arduino OLED Display strange output

I am trying to use the Adafruit SSD1306 lib with my OLED display for arduino but I've encountered an strange error. I am using the default example "ssd1306_128x64_spi" but the display is odd, the ...
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0answers
101 views

Adafruit Feather ESP32 - GPIO power drain during deep sleep

I have an Adafruit Feather ESP32 whose GPIOs I use to control an external device. I don't want the device to drain the power of the ESP32 sometimes, so I set the GPIOs to INPUT. When I go into deep ...
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0answers
52 views

Adafruit Feather nRF52832 as a SPI slave

Like the title says, I am trying to configure the Adafruit Feather nRF52 as a SPI slave, who will receive information from a MSP430 microcontroller. I have found a few code examples that provide ...