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.

Filter by
Sorted by
Tagged with
2 votes
1 answer
170 views

Adafruit OLED 7-pin display - Abbreviations

I can't remember for the life of me how exactly I set up this screen in previous models, partially because the references I'm using in my code have different names from the pins on the Adafruit ...
1 vote
4 answers
3k views

How to create and edit fonts for the Adafruit GFX library?

I noticed that the TomThumb.h font included in the Adafruit GFX library has characters that have different widths, which is a problem for me because I'm doing text processing that requires characters ...
6 votes
1 answer
154 views

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 ...
4 votes
1 answer
181 views

MacBook + BLE Microcontroller Incompatibility?

I've programmed an Adafruit Feather nRF52840 board to send MIDI signals to my computer via BLE. I can confirm that the board pairs successfully with an Android phone and a Windows PC, but my laptop (...
0 votes
0 answers
25 views

Adafruit Datalogger and Bluefruit LE issues

I'm having issues using the Adafruit Bluefruit LE shield at the same time as the Adafruit Datalogger shield. I can use either shield independently without issue. When I stack the two, I can talk with ...
2 votes
1 answer
2k views

Using RFID and fingerprint sensor together

I am using both an RFID and a fingerprint sensor in my project. When running the program, the RFID is detected but the fingerprint sensor is not detected and hence my code is not going forward. Here ...
0 votes
1 answer
207 views

RFID with Adafruit fingerprint together not working in Arduino Uno

I have edited my Ccde 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 &...
1 vote
2 answers
959 views

HX711 Ridiculous speeds

I'm using a SparkFun HX711 board and an Adafruit AdaLogger (M0) Featherboard. I have cut the trace on the back of the HX711 to get a faster data rate (should be about 80 sps). I did this by reviewing ...
2 votes
1 answer
2k views

Adafruit_SSD1306.cpp fatal error: pgmspace.h: No such file or directory using SSD1306 on Arduino Nano RP2040

I am currently trying to get a SBC-OLED01 display to run under my Arduino Nano RP2040. I use the official example from Adafruit, attached is the code. /*************************************************...
2 votes
1 answer
362 views

Multiple TFT's not displaying

I am trying to connect about 5 TFT's to my Arduino Uno and I got to the point of hooking two of them up without any issues. However, after a code upload, they stopped working. I then took all the code ...
3 votes
3 answers
4k views

ESP32 Pins won't fit in solderless breadboard

I bought an Adafrut Huzzah32 ESP32 for an IoT project. When the ESP32 arrived, I attempted to fit it into my existing breadboard, but I immediately noticed that no matter how hard I pushed, the pins ...
2 votes
1 answer
590 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 ...
1 vote
0 answers
239 views

display.begin(); function breaks working code

I've been setting up a system using an Arduino Uno board that reads from both an Adafruit MPU6050 6-way gyroscope and accelerometer and an Adafruit NAU7802 connected to a load sensor. I have code for ...
1 vote
0 answers
110 views

Adafruit Si4713/IDE not working

My IDE shows "Adafruit Radio - Si4713 Test", but without "RDS on!", which is supposed to show up. The radio I use (Inscabin M60) shows static. Am I doing something wrong? Adafruit ...
2 votes
1 answer
40 views

Having issues understanding what "#define GET_STATUS" does

I am trying to use a Waveshare 4.2inch e-paper display with an Adafruit Feather Adalogger M0, but am having issues with two separate instances of #define GET_STATUS being defined differently in ...
1 vote
1 answer
1k views

Adafruit_Arcada' does not name a type;

I am trying to program an adafruit pygamer (which says it's compatible with Arduino). I have added the ZIP folder for the library into the library folder om my PC where all of my folders are supposed ...
1 vote
0 answers
41 views

Code not displaying/working DFRobot SIM808 shield data on Adafruit 1.69" ST7789 rounded screen

I have been having trouble with the code below not display and possibly not working and or looping. Before making changes to my code I had a problem where the Serial monitor would print up to "...
0 votes
0 answers
122 views

Adafruit Feather M0 WiFi - ATSAMD21 + ATWINC1500 Firmware updater

I have a Adafruit Feather M0 WiFi - ATSAMD21 + ATWINC1500 that indicates the firmware installed is too old for the Wifi101 library (Version 0.16.1). I have been trying to do a firmware update but ...
1 vote
0 answers
35 views

How to prevent the application code from getting stuck in forever loop when using SerialFlash library in Arduino-Adafruit framework

I have been working on a project that runs on Adafruit's Bluefruit nRF52 board. I used the SerialFlash library for Arduino provided by Paul Stoffregen: https://github.com/PaulStoffregen/SerialFlash....
1 vote
0 answers
1k 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 ...
1 vote
1 answer
181 views

CircuitPython - how to connect Adafruit esp32 AirLift with Adafuit HttpServer - incompatible socket object

I am building a CircuitPython weather station based on Adafruit M4 board stacked with Adafruit ESP32 AirLift module. Both work fine together when it comes to making http calls (via Adafruit_requests ...
1 vote
1 answer
270 views

Will an Arduino Nano work instead of Teensy 3.2?

I hope this is ok to post here and I appreciate any suggestions or help and opinions/facts to make this work. First off I’ve Never programmed an Arduino device! I was looking at this project: https://...
-2 votes
1 answer
49 views

how do I wire a 2nd Adafruit TMP117 board to my Adafruit Metro by I2C?

I want to connect two TMP117 boards to one Metro (ie. Arduino). (the first, addressed at 48 the 2nd at 49.) Should 2nd board's 4 wires simply attach (ie. solder) in parallel to 1st board's 4 wires? (...
1 vote
0 answers
79 views

Unable to use RF M4 Receiver with servo motor

I am trying to control a servo motor with the following code: #include <Servo.h> Servo servo; int const inputPin = 3; void setup() { Serial.begin(9600); servo.attach(9); pinMode(...
1 vote
1 answer
206 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 ...
0 votes
3 answers
573 views

How do i make my DC motors run simultaneously?

Im coding an adafruit motor shield for 3 DC motors to go forward & backwards, and so my concern is why only my motor3 is running the whole time and motors 1 & 2 are switching off meaning 1 ...
1 vote
1 answer
244 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 ...
1 vote
1 answer
217 views

Reading & writing a configuration file on an Adafruit Circuit Playground Express

I would like to store an application's configuration in a file stored on the Circuit Playground Express (CPX) flash. The application itself needs to be able to update the configuration file. Things I ...
1 vote
2 answers
1k views

GPS date and time not displaying correctly in Arduino Uno,NEO6M GPS module

I am learning how the Arduino and GPS module work so I can apply it to another project. My components are an Arduino Uno, NEO-6M GPS module, and a Adafruit 1.8" TFT display. The code did not work ...
0 votes
2 answers
200 views

Library that pulls ID3v2 info from MP3s

I'm using an Adafruit Music Maker with a TFT screen on my Mega 2560. I can pull ID3v1 data from the end of an MP3, but I'd like to get the ID3v2 data as I can then push the album cover art to the TFT ...
0 votes
2 answers
438 views

Adafruit thermal printer prints weak

I am currently hooking up my arduino to an adafruit mini thermal printer. When a button is pressed, some code is executed which then sends some information to the thermal printer. Everything works ...
-1 votes
1 answer
127 views

ADXL345 to detect sudden and large changes in acceleration

I am working on school project to develop, basically, a shock sensor when the object containing the ADXL345 is thrown to the ground. I have used the Adafruit ADXL345 sensortest from the library but I ...
0 votes
0 answers
505 views

String of raw data to Char Hex Array for Bitmap

I'm trying to transfer a monochrome ~4kb image file over WebBT to an ESP32 via BLE. The EPD display looks for an unsigned char array to represent a bitmap. So..it should be in the format of something ...
0 votes
1 answer
2k views

High-frequency PWM on an Adafruit Feather M0

I'm trying to get a Bluefruit Feather M0, which has a SAMD21G on it, to do high-frequency PWM by accessing timer registers directly, rather than using the Arduino API to do PWM at ~1 kHz or ~500 Hz. ...
0 votes
1 answer
771 views

Why am I getting a "SendCommand was not declared" error?

#include <Adafruit_Fingerprint.h> #include <SoftwareSerial.h> #include <LiquidCrystal.h> uint8_t id; int getFingerprintIDez(); //pin #16 is IN from sensor (GREEN wire) //pin #15 is ...
-1 votes
1 answer
273 views

Using Arduino to allow continuous servo to go in the opposite direction

For my project I am using 6 continuous servos connected to an Adafruit Servo Shield. To run them I use pwm.setPWM(0, 0, 1000) and then set a delay to run them for how long i’d like to, then run pwm....
0 votes
1 answer
81 views

A bug with multiple IR detectors

I have a device power by arduino nano atmega328. The idea of this HW is to detects dropped seed (corn, oil bean etc.) and to count it. I wrote initial code, but id does not work in an expected way. it ...
-1 votes
1 answer
70 views

What are these 18 extra ports on the adafruit-gfx 2.8"

I recently got the Adafruit gfx 2.8" display, which works fine. It's quite obvious that it requires almost all of the pins on the UNO. However, I don't understand what are the 18 avaliable "...
0 votes
0 answers
154 views

Adafruit feather helium integration

So I have an adafruit feather M0 LoRa 900 MHz and try to connect it to a helium hotspot (add to my helium console). For that I use the official helium documentation provided by helium and I get to the ...
1 vote
1 answer
582 views

Configure Trinket M0 as I2C peripheral

I am trying to use I2C to communicate between my XBee3 (controller) and an adafruit trinket m0 (peripheral). I'm pretty confident I have the modules connected properly (trinket SCL/pin 2 to xbee SCL/...
0 votes
2 answers
4k views

What is the difference between SCLK and CLK pins?

Please do forgive me if anything in this question does not make sense, I am very new to PCB and Arduino. I am following a tutorial through where the person doing it is making a small data computer (...
0 votes
1 answer
48 views

Can't get Adafruit MusicMaker and Ethernet to work at the same time

Working on an IoT project. Environment: Adafruit Feather M4 Express Adafruit MusicMaker FeatherWing (amplified, this is a VS1053 at heart) Silicognition PoE FeatherWing (electrically compatible with ...
-1 votes
2 answers
3k views

NeoPixel Ring Usage Without Arduino

I am looking at purchasing a NeoPixel Ring for a project, but need it to work without an Arduino. Once the NeoPixel has been programmed by the Arduino, will it function when powered without the ...
1 vote
0 answers
698 views

AFMotor.h Throws Multiple Errors

I'm trying to get AFMotor.h working on an Arduino Uno Wifi Rev2 with a L293D Motor Shield. However, when I install the library (regardless of whether I do it using the in-built library manager or by ...
2 votes
1 answer
104 views

How to combine servo shield with peristaltic pump?

I am creating a project where I need 16+ (possibly up to 20) servos to open/close liquid flow through tubing, which in turn will be controlled by a peristaltic liquid pump (https://www.adafruit.com/...
2 votes
1 answer
453 views

Why is the Adafruit splashscreen logo not displayed properly?

I'm working with a 128x64 Oled display. I have just installed the Adafruit library and I'm running some sample codes. I have not modified the sample code in anyway yet just testing if the oled display ...
-1 votes
1 answer
684 views

Can I configure an Arduino via NFC using PN532 with an iPhone as the source?

It seems clear that Apple has intentionally limited the possibilities with NFC, so I understand that I'm going against the grain here. However, I need to support Android and Apple for my device setup, ...
2 votes
1 answer
83 views

Can this display's address be changed?

I need two displays hooked up to an Arduino MKR Wifi 1010, and I saw this video which shows how to do it: this video. I also would like to have a full color oled display about 1 inch big so I would ...
3 votes
1 answer
250 views

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 <library_name> I have tried Adafruit_MotorShield, ...
0 votes
1 answer
62 views

Mega 2560 with Adafruit Music Maker and TFT - Pin reroute

I'm building a custom headunit for my motorcycle using the Arduino platform. I wanted to try it as the modular nature of the board and shields looked very versatile. While there does seem to be plenty ...

1
2 3 4 5
8