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.
357
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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 ...
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526
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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 ...
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155
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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 ...
0
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1
answer
49
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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 ...
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2
answers
215
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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 ...
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1
answer
380
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Trying to draw a bitmap to an LED matrix only draws the left half
I'm EXTREMELY new to Arduino and fairly new to programming as a whole, but I thought it would be fun to try and write a program that draws arbitrary 1-bit bitmaps to an LED matrix using the Adafruit ...
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1
answer
41
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Does Adafruit PowerBoost 1000 Charger support data transfer?
As the title says - Does Adafruit PowerBoost 1000 Charger support data transfer?
I mean that if I connect USB on one side to PC and Arduino on other side - can I still program it and get serial ...
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1
answer
994
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Load Adafruit GFX bitmap fonts on desktop for pixel-level design
I am designing UI for 160x128 ST7735-based TFT display which will be displayed using Adafruit's GFX library (and the driver in Adafruit_ST7735.h). I am using the default bitmap font (custom fonts don'...
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2
answers
1k
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Using SDA and SCL with analog inputs at the same time
I'm trying to build a robot arm based on Arduino UNO and PCA9685 controlled by few potentiometers. The easiest way that I figure out and find on internet is using two Arduino's, one as master and ...
0
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1
answer
591
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ADXL345 gives wiring error in SPI mode
I get the following output from serial monitor when trying to use the ADXL345 with Arduino Uno in SPI mode (I2C mode works fine):
CA
Ooops, no ADXL345 detected ... Check your wiring!
See photos for ...
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1
answer
2k
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DC Motor doesn't turn and a beep sound is made, also there is a burning smell
I was trying to drive a single dc motor with L293D Shield and Arduino Uno
#include <AFMotor.h>
#include <SoftwareSerial.h>
AF_DCMotor motorLeft(3);
AF_DCMotor motorRight(2);
unsigned ...
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0
answers
1k
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Reducing the noise of an SSD1306 display by reducing pre-charge in Adafruit SSD1306 library
I have issues with electrical noise on my board (>300mV switching noise on top of 3.3V rail, its quite a lot), which is generated by my I2C SSD1306 OLED display. After some research I found that the ...
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1
answer
44
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Need Help to Select Microcontroller ?? Help [closed]
i am doing a project which has to run in side a garage to control water levels in sump pit as well as in overhead tank . also schedule running of pumps.
i have to run 5 pumps (two for ground water ...
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1
answer
333
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How to connect 2 Fingerprint Sensor to Arduino Mega? Please help
My project was to open the door from inside and outside the room using fingerprint sensors, currently I used separate arduino on 2 different fingerprint sensor. Please help, my arduino detected only 1 ...
0
votes
1
answer
312
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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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1
answer
341
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Same output on displays with different I2C-addresses (AdaFruit library, ESP32)
I've got two displays hooked up to a ESP32 via I2C and I'm using the AdaFruit library. All handling display output is packed in a own library. As I was testing I only had one display set up and ...
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1
answer
742
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Trying to power multiple servos at once using a Arduino Mega
Recently I have been trying to do a project for my end of year project, it involved making a humanoid arm.
I am still a newbie at these things, I usually have my friend do the wiring, but since he ...
0
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1
answer
481
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Quaternion values from BNO055 not available
I am trying to obtain Quaternion values from a BNO055 connected to ESP32-PoE board by Olimex.
Code
#include <Wire.h>
#include <Adafruit_Sensor.h>
#include <Adafruit_BNO055.h>
#...
0
votes
1
answer
136
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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2
answers
1k
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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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1
answer
295
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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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1
answer
965
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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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1
answer
130
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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 ...
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1
answer
604
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How to identify Adafruit Feather 32u4 via mac id/UUID/etc [duplicate]
I'm working with a couple Feather 32u4 devices and I've had success so far in setting them up as transmitters and receivers as well as hooking up one of them to a Featherwing Ethernet and talking over ...
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1
answer
3k
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SAMD21 Programming with Atmel ICE Fail to Write
I am trying to program my Adafruit M0 with the SAMD21G18 chip with Atmel studio and the Atmel ICE programmer. I have pin 1 on the ICE connected to 3.3V on the M0, pin 2 connected to SWDIO, pin 4 to ...
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1
answer
6k
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ESP-32 with tft display
I recently got a Adafruit TFT screen and an ESP-32 development kit. I was trying to interface these two the pin connections I used areas follows:
TFT | ESP-32
------+----------
3V3 | Vcc
Gnd ...
0
votes
1
answer
532
views
Bluetooth serial readings on 0.96'' Adafruit OLED
I am trying to display the readings of LDR connected to slave arduino through serial monitor of master arduino paired with bluetooth. I got the readings and it is working fine.
But when I connected ...
0
votes
1
answer
794
views
getHostByName always failing to find a valid ip
I'm using an arduino Uno and a CC3000 wifi shield. I installed Adafruit library in arduino to get access to Wifi network. I'm currently trying to run some samples that comes with the library. It ...
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1
answer
349
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How would I refactor this code, given how similar most of the lines are?
I have a set of buttons and a set of NeoPixel LEDs. There's lots of very similar constants (button1pin, button2pin, etc) so there's almost certainly a more efficient way of coding this.
Any ideas?
#...
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1
answer
39
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What would the total current requirements be for these items?
I'm using 5 of those 8mm NeoPixels + a 5V Trinket.
I'm trying to get a rough estimate of the current requirements that would have, assuming all 5 NeoPixels were running at full brightness "white" (...
0
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1
answer
176
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Arduino Micro blue light dimms and turns off when I plug in my circuit
I have a PING Ultrasonic Sensor, Adafruit Absolute Orientation Sensor, and a Continuous rotation servo. All pins are connected to an Arduino Micro. However because the micro only has one 5V output, I ...
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2
answers
72
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Looking at Adafruit's website I'm confused which wallcharger I should get
As the title says there are many different wall chargers to choose from.
12v, 9v, 5v, with different mA amounts...
The starter kit on Adafruit's website mentions to get the 9V 1000mA switching power ...
0
votes
1
answer
291
views
Having issues with sending output to WiFi Shield
I am doing simple proof of concept trying to send C++ program output to Adafruit CC3000 WiFi Shield (using Visual Studio 2013 Desktop Edition on Windows 8.1).
In my design laptop is connected to UNO ...
0
votes
1
answer
465
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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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1
answer
72
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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 "...
-1
votes
1
answer
35
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?
-1
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1
answer
187
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
votes
1
answer
104
views
Steppermotor+Arduino Mega+ Adafruit
I have 2 Stepper Motors (QMot stepper motor1 Amp, 5.3Ohms, 5.3 volts and 200 steps/rev.)
, which are connected to the Adafruit shield2.4, they are mounted to Arduino Mega, the motors pull generally 2 ...
-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
votes
1
answer
281
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....
-1
votes
1
answer
716
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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, ...
-1
votes
1
answer
299
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Neopixel code not working on Adafruit Feather board
I have connected a single neopixel to my Adafruit Feather board, running Arduino software.
The power pin is connected to 3V on the Feather. The data-in pin is connected to pin 15 on the Feather.
As ...
-1
votes
1
answer
621
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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. ...
-1
votes
1
answer
3k
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32x32 RGB-LED Matrix displaying Arabic Font with Font Forge more easily
At the moment I am using a separate function to display byte arrays like these:
const PROGMEM unsigned char arab4[] = {
0x00, 0x00, 0x00, 0x00,
0xf0, 0xff, 0xff, 0x01,
0xf8, 0xff, 0xff, 0x01, ...
-1
votes
1
answer
1k
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Find remote ip address TCP
Found this "Remote IP of TCP Socket" at:
https://e2e.ti.com/support/wireless_connectivity/simplelink_wifi_cc3000/f/851/t/380635
I am trying to log the remote ip address of a client. Using Ethernet, ...
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votes
1
answer
135
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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 ...
-1
votes
1
answer
74
views
Problem communicating with GSM module which is a Fona 3G from adafruit
My issue is fairly simple to describe but I have no idea what the problem could be. So I got my FONA 3G and immediately after taking it out of the box, I connected the battery and I wired up my FTDI ...
-1
votes
1
answer
309
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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 ...
-1
votes
1
answer
2k
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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....
-1
votes
1
answer
1k
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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 ...