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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36 views

jm-101b Fingerprint sensor not working with Arduino Uno

On the sticker of the fingerprint module, it says "JM-101B 2050B". The product page that I bought it from has it listed as: "Teyleten Robot DC 3.3V AS608 Optical Fingerprint Reader ...
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16 views

How to use an Arduino to play audio from an Adafruit Soundboard using audio file name

I'm trying to control an adafruit soundboard with my elegoo uno R3. I'm a beginner programer and I'm trying to get the soundboard to play a sound file by name when I press a button. I have confirmed ...
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Arduino UNO and PCA9685 - Problem with external power supply

I am totally desperate and hope you can help me. I've been building a project for a while where I have to control several servos. For this I bought some MG996R servos and a PCA9685 16-Channel Servo ...
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How can I get a Faster boot with the Adafruit Feather SAMD21?

The Adafruit Feather SAMD21 takes about two seconds from power being supplied to when setup() starts running. How can I shorten that time so that setup() will run sooner? I measure this time using a ...
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Using Trinket M0 as a raw hid device

I am using Nico Hood's rawhid code to have a micro controller presents itself as a raw hid device to the PC. This works splendidly when I use it on an Arduino Pro Micro. My linux kernel will report: ...
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29 views

Adafruit PN532 shield: having trouble stopping the read function

I working on a wheel of fortune game and thought of using RFID cards in the segments of the wheel to identify and play certain videos when the wheel has stopped. If the wheel stops in segment A it ...
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43 views

FastLED and Adafruit Gemma M0 - Getting started

I just bought a Gemma M0 and I'm trying to use it with FastLED. There are several forums that discuss the same errors I get when I try to upload my code, but they all involve editing .h files, ...
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46 views

RTClib.h problem

In Library Manager RTClib and DS3231 work somehow with older versions. RTC time can picked only once and then it give bullshit. Using newest versions screen is empty. In picture first time is right, ...
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1answer
57 views

Capacitive touch on Adafruit Trinket M0 goes unstable when USB cable from laptop is disconnected

Note that to get to this point, I used much of the helpful information from the Post How to use capactive touch on Adafruit board in Arduino mode? I am using a Trinket M0 with the Arduino IDE with the ...
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27 views

How to correctly use SSL certs with the Adafruit SIM800H

I am trying to use a Adafruit Sim800H to connect to Azure using MQTT with an SSL certificate. My first step is trying to put a new SSL certificate onto the board. To do this I am using this example ...
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48 views

Flash HEX onto an Arduino board

The scenario: I have built a device off an Adafruit nRF52840 and I need a way to deploy firmware updates. I have delivered the device to my end user and will need to periodically send him updates. I ...
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Issue displaying on Adafruit display when enabling GSM communication

I am trying to write to the adafruit display using Arduino MKR1500 when it is connected to the internet. The issue I am facing is when I add the code to connect to the cloud, the display stops working....
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1answer
216 views

How to fade LED in a defined time using FastLED

I'm using FastLED library, Arduino Nano and 5 addressable LEDs (WS2812B). I'd like to create the sequence in the image attached. (all in white color for example) I know how to turn ON each LED every 0....
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28 views

Driver configuration not showing the right numbers on the Graphics Test example's serial monitor for Adafruit IlI9341 library

I have a 2.8" Color TFT Touchscreen from Adafruit, and I'm currently trying to set it up. I've been following this guide to set up the screen. The screen powers on when connected to power, but it'...
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1answer
119 views

Adafruit Thermal Printer unwanted gradient

I have thermal printer from adafruit and when printing images I have problems getting a proper black. I tried playing with the dot print time and the dot feed time using the setTimes function, but ...
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48 views

How to use 5v and 12v addressable led strip together

Hi guys I’m new to this forum and also not much experience about led lights question already asked but didn’t get any detailed answer I want to know can I provide working data signal to 2 different 5v ...
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37 views

SD Card Library interferes with Adafruit

Im currently working on a datalogger that uses oled i2c displays and current sensors. Both of them uses adafruit libraries. To write the data, im using arduino's sd library, but somehow, the sd ...
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160 views

Calibrating Adafruit TCS34725 for RGB colors

I am new to Arduino. I am currently working on a project which requires color detection using the TCS34725 Adafruit sensor module. For the project, I need to calibrate the sensor with RGB colors. ...
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1answer
105 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 ...
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1answer
38 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 ...
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48 views

Adafruit soundboard with esp32

Board: ESP32 Development Board I am trying to get the adafruit soundboard code to work on my ESP32. I have installed espSoftwareSerial but I keep getting errors with their sample code. I receive ...
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25 views

Servo make partial rotation and stop working automatically

I'm using this board in my robotic arm project: Adafruit PCA9685 16-Channel Servo Driver ( https://learn.adafruit.com/16-channel-pwm-servo-driver/using-the-adafruit-library) I've connected all of my ...
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39 views

DHT-sensor-library-master

I only uploaded the library to check whether it has installed correctly. It's installed and i am having this error. Using library DHT-sensor-library-master at version 1.4.1 in folder: C:\Users\Mcniven\...
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30 views

Adafruit CCS811 Air Quality Sensor

in my arduino project I use the Adafruit CCS811 Air Quality Sensor Breakout - VOC and eCO2, I need the references and sizes of these components, knowing that I have found the electrical diagram but ...
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129 views

Send sensor data through GATT with Adafruit Bluefruit

I have the BLE Module Adafruit ItsyBitsy nRF52840 Express and I want to send sensor values from a Hallsensor to my computer. I was able to have the right data checking with the Serial monitor. int ...
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1answer
183 views

How do I set up communication between the "Seeeduino Xiao" and the "Adafruit Bluefruit LE UART Friend - Bluetooth Low Energy (BLE)"?

I've seen normal Arduino boards connecting to it no problem (Uno, Nano, etc.). I'm trying to connect it to my Seeeduino Xiao. It has UART compatible pins, so I'm fairly certain wiring isn't an issue. ...
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1answer
83 views

Error Compiling for board Arduino Nano while using Adafruit GFX

Whys is this happening to me?? I have to meet a deadline please help!! Here is my code. #include <SPI.h> #include <Wire.h> #include <Adafruit_GFX.h> #include <Adafruit_SSD1306.h&...
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117 views

Use I2C to control one of three DS3502 Adafruit digital potentiometers on the same I2C bus

My teammate and I recently purchased a handful of DS3502 digital potentiometers (https://learn.adafruit.com/ds3502-i2c-potentiometer/pinouts) from Adafruit, and we'd like to be able to control them ...
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146 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/...
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78 views

How do I make my motors speed change?

I'm using an Adafruit V1 Motor Shield for coding two 12 volt DC motors. In my code I'm changing the set speed, but the motors still seem to be going the same speed, which is really fast, and I want ...
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107 views

'class Adafruit_SPIDevice' has no member named 'endTransaction'

So what I have done is followed all of the instructions in the following link: https://learn.adafruit.com/adafruit-pygamer/setup and have managed to get all the way up to https://learn.adafruit.com/...
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1answer
356 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 ...
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1answer
238 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 ...
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1answer
69 views

MQTT connection not being recognised in void loop()

I am trying to publish MPU 9250 readings in the Adafruit IO sending the data from ESP32. The WiFi connection is being established, but the code is not going inside the if(mqtt.connected()) inside the ...
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2answers
528 views

Finding Relatively Accurate Velocity Using an IMU

I am currently working on a project where I am trying to accurately find velocity in a handheld device using an IMU for about 30 seconds. I have been having major issues doing this because of large ...
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0answers
119 views

How to change the update rate in TinyGPS++?

I am working with TinyGPS++ library and Arduino-nano and I want to change the update rate. I worked before with Adafruit GPS and uses the below code for updating it. // Set the update rate GPS....
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222 views

NP532 doesn't detect NTAG213 tag

I'm using a PN532 module to read/write NTAG213 tags. They both should be working at 13.56 MHZ, and Adafruit should support these tags in their library. The Arduino Uno board and the module are ...
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3answers
194 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 ...
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79 views

Why doesn't LCD 16x2 work with fingerprint sensor code?

When I separate fingerprint code and LCD code it works fine. sensor read 6 templates which I already stored 6 fingers ID. When I combine the code it read 0 templates. #include <Adafruit_Fingerprint....
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1answer
62 views

Can't change pins in AM2320 code, types mismatch

I took a simple A2320 temperature sensor and connected it not to A4/A5, but to A1/A0 pins. SDA => A1, SCL => A0. (In C code they are number 15 and 14). But I can't call the library to take ...
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1answer
111 views

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(...
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0answers
85 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 ...
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1answer
144 views

I want to create 10 levels with one button but this code shows only level 1?

#include <Adafruit_NeoPixel.h> const int PIN = 4; const int NUMPIXELS = 10; const int BUTTONPIN = 6; int buttonState = 0; int PINState = 0; int level = 1; int dt = 100; Adafruit_NeoPixel pixels(...
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90 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 ...
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1answer
40 views

iterate through 8 thermocouple sensors (MAX31856)

I have 8xMAX31856 and I am trying to use the Adafruit library. Instead of writing all 8 thermocouple channels each time in code (and wasting memory), I want to store the objects in an array and loop ...
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0answers
169 views

Adafruit/Arduino SAMD BSP package and adding SAME51 compatibilty

I am trying to make a SAME51 variant of an arduino board, in the end I would like to have an arduino compatible board, BSP, and library for controlling canbus. I have already gone through some things, ...
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1answer
114 views

Arduino fingerprint Scanner stop loop after enroll or delete

How can I stop the loop when I enroll a fingerprint to the module? The loop is stuck in enrolling fingerprint even it was already done. The result I want was after the enrollment of fingerprint, it ...
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0answers
31 views

Adafruit IO + Esp-Now

So i am using adafruit io and esp-now on an esp32 to recieve voice commands from the internet and sensor values from another esp32. Independently, they both work quite fast but together the esp-now ...
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2answers
360 views

Cannot successfully implement singleton

I have spent the better part of today trying to figure out why I can't get this to work... I have this project where, because of previous design considerations, have implemented a singleton class that ...
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1answer
217 views

Is it possible to use Adafruit's Circuit Playground Express's 2MB storage in Arduino IDE?

I understand that the extra 2MB of memory is for circuit python. However, I wouldn't mind having access to 2MB of storage and using the Arduino IDE/low level C to access it. Is that possible? If so,...

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