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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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535 views

cannot get low power with Adafruit Trinket

I want to get as low power use during sleep as possible with an Adafruit Trinket. Based on results presented on various places in the internet (blogs etc), I expect to be able to go down to 50 - 100 ...
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1answer
124 views

I got this ILI9341 *i 'm not sure * from ebay and i cant manage to use any librarys

I have Arduino Uno R3 i can't mange to upload code for the display . I tried to use librays from this http://www.buydisplay.com/default/arduino-2-4-inch-tft-lcd-touch-shield-li9341-library-for-mega-...
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0answers
232 views

Wiring Feather Huzzah ESP8266 to Monochrome 1.3" 128x64 LCD

I'm new to Arduino and the pinouts for the Adafruit 938 LCD doesn't seem to match the pinouts that I looked up for the Huzzah ESP8266. Does anyone know the proper pinout for this display and the ...
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1answer
54 views

Drawing bitmap on TFT

So, my .ino file is like this (do not worry about TftDisplay library, it totally works fine and myDrawPixel function just calls the adafruit drawPixel function): #include "TftDisplay.h" #include <...
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0answers
64 views

Power Difference in motors when using Arduino Motor Shield

I have connected 4 DC Motors (500rpm) to the Arduino motor shield and 9V Power Supply to the shield. The speeds for the motors is same in the code but on running the code the motors don't run at the ...
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0answers
149 views

Arduino Mega 2560 to Adafruit STMPE610 wiring

I'm having difficulty in trying to find the correct wiring between the STMPE610 to the Arduino Mega 2560? Q: Could someone please illustrate the correct wiring for i2c connection between the two ...
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0answers
166 views

Joining Adafruit MQTT and NRF24L01

Just look, I can't find it on google. libraries #include <ESP8266WiFi.h> #include <ESP8266mDNS.h> #include <WiFiUdp.h> #include <ArduinoOTA.h> #include <Adafruit_MQTT.h&...
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1answer
2k views

ST7735 display with esp32

I have edited the adafruit ST7735 library so that it supports esp-32.I made some edits in Adafruit_ST7735.h file. which are as follows. The code works fine but I had expected the screen to work ...
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1answer
542 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 ...
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1answer
1k views

Fingerprint sensor code won't work correctly with LCD 16x2

I am doing a fingerprint sensor that works with a 16x2 LCD. The code works correctly for the fingerprint sensor, but when I enter LCD code, the LCD works but the fingerprint stops working. I am using ...
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1answer
1k views

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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1answer
289 views

HMC5883L - Tilt compensation without Accelerometer

Trying to get an HMC5883L to compensate for being installed in 90 degrees. Doesn't seem to me that it'll need too complex math or accelerometer. But I have no idea how to do the compensation for it. ...
2
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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....
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1answer
3k views

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 ...
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1answer
248 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 ...
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2answers
632 views

Press on pressure sensor, then wait 5 seconds, turn on LED

I'm having some trouble wrapping my head around timers in Arduino. I've got a FSR Pressure Sensor and I want it to turn on my NeoPixel LED after pressing on it for 5 seconds. Any help is much ...
3
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2answers
568 views

Creating a library of C++ classes for Arduino; How to #include “Arduino.h”, “WProgram.h”?

I've written 6 C++ classes on the CLion IDE to be used on Arduino. One of these classes uses a C++ library called "Adafruit_PWMServoDriver.cpp" provided by Adafruit to use the PWM driver they sell. I'...
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0answers
2k views

Turn on one by one the LEDs of a Neopixel rgb LEDs strip for each detection at the same distance from an Ultrasonic Distance Sensor (HC-SR04)

For this project I seek to create a counter of water glasses we drank throughout the day. I use for this an Arduino UNO card, a Piezo buzzer and a Neopixel rgb LEDs strip (5 LEDs for this test). ...
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3answers
118 views

Arduino Shield on Breadboard

I would like to ask if I can stack directly Adafruit PN532 RFID Shield onto my breadboard. Or do I need something for that? Thank you.
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0answers
124 views

Is something wrong with my Adafruit motor shield?

I think something may be wrong with my shield, as I looked at the other forums related to this question and still can not get help. I know that I can't run it from a 9V source by itself, as the ...
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1answer
370 views

SSD1306Ascii Library

Is there any way to add Inverse Text color function into SSD1306Ascii library like which is available in ssd1306 adafruit library ?
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0answers
269 views

SSD1306Ascii Library for Arduino

Im using SSD1306Ascii display library for arduino previously i was using Adafruit ssd1306 library , due to it occupies lot of space i switched to SSD1306Ascii library which is lighter , Is there a way ...
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0answers
304 views

Adafruit SSD 1306 with Arduino

At first i was using adafruit library for connecting adafruit ssd1306 128*64 display with arduino , display was working good, since that library was using too much space i decided to switch to #...
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1answer
240 views

What is the point of a adafruit data logger

In order to play an audio file, I was suggested to get an Adafruit data logger, yet right now I am stuck with the project and I realized that I'm not using the data logger to its full potential. Yet ...
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1answer
107 views

Initially my Arduino executes a series of PWM signals simultaneously, but after some iterations it adds around a second between PWM executions

I am using 2 adafruit PWM servo shield in order to generate 25 PWM signals. In particular I am using this shield: https://www.adafruit.com/products/1411 A python script sends the commands to the ...
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1answer
286 views

Slackbot integration using ESP8266 gets “ssl->need_bytes=16432 > 6859”

I'm trying to use Uri Shaked Slackbot code using an Adafruit Feather Huzzah ESP8266 WiFi. I have created the Slackbot integration and copied the API key. The code connects to the WiFi and does the ...
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1answer
1k views

5pt font for Neopixel shield

I have a 5x8 Neopixel shield for my Arduino. I want to display text on it, while it is in "landscape mode", i.e. a only 5pt high text. The default font that is used by the printcommand is 8pt high. ...
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0answers
74 views

Upload custom trinket firmware

I'd like to disable the trinket 10-second bootloader when powered up, so it will just begin running the program. I would still like to be able to press the reset button to re-program it. I found an ...
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1answer
1k views

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, ...
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1answer
98 views

Is it possible to have an Adafruit music maker shield and a sensor connected to the same Arduino?

Are the analog I/O pins on the Arduino still available for sensors when there is an Adafruit Music Maker shield attached to it? I want to play a sound file, but only when a PIR sensor senses motion.
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1answer
188 views

How do I stop 5v on the I2C port of a pro mini so I can use 3.3v devices?

The theory is that you can use 3.3v I2C devices from a 5v device as long as the pull ups are only to the 3.3v. I have a 5v pro mini connected to a bmp180 board which has a 3.3v regulator but no level ...
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0answers
666 views

Arduino Zero - Reading data from the Rx pin on the Serial1 platform - Adafruit GPS

I am trying to use the Adafruit Ultimate GPS sensor. In the tutorial Adafruit provided, one of the initial steps to see if the GPS can get a fix on your location is to wire up the GPS to 5V, GND, RX, ...
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0answers
180 views

Flora upload issues

Good Morning and Merry Christmas, I have purchased 2 Flora boards and am having trouble uploading the "Blink onboard LED" program to test the board. And every other code. here is the website with ...
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1answer
438 views

Adafruit feather M0 wifi firmware update

I just noticed that the firmware on the m0 wifi might need updating but says not to use the provided updater, how do you update the firmware so ? Thanks
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0answers
95 views

Adafruit feather m0 wifi and Ble feather

I'm looking to get the adafruit feather m0 wifi and was looking to add the ble feather and oled screen also to the same setup. Has anyone ever stacked the m0 wifi, ble and oled together ? Can you ...
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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
317 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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1answer
44 views

What boards have integrated USB charging?

I've been building wearables, using the adafruit trinket, which I love, its small size is easy to tuck away. But I hate having to unplug the battery to charge it every time. I wired in a SPDT switch, ...
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1answer
46 views

How do I output tone() and audioFX board output through a single speaker?

I'm building a BMX start gate controller. It requires a voice sample to be played ("Riders ready, watch the gate!") before playing a series of tones at very specific frequencies and intervals. After ...
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1answer
108 views

WaveHC Library Trouble

I posted this on the main Arduino forum, but no one has responded in 24 hours. I'm trying to use the WaveHC library from Adafruit with a custom PCB. I am having trouble getting the SPI com to work ...
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2answers
109 views

How to analogRead() 2 separate pins simultanously?

I am trying to create a simple piano playback using a flex sensor, a proximity sensor and a piezo buzzer. I want to have it so that when the flex sensor is triggered, a sound is played on the piezo ...
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1answer
288 views

How to connect Flora 2 and nRF8001 BLE Breakout

I'm trying to get the nRF8001 BLE Breakout polling properly on Flora but Adafruit's tutorial and everything I've read and hunted around but I'm new to Arduino and not really sure how the ...
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2answers
163 views

neopixel not blinking

I have some neopixels, and I have one hooked up to my teensy. I want to have the color change, when the push button is pressed vs not pressed. The LED will change colour when I upload the code, if I ...
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1answer
419 views

DC Motor Pinning the Ada Fruit Moto Shield with the Mega2560 R3

I picked up an AdaFruit Motor Shield V2.3 . The example on the site shows how to code the DC Motor connection // Create the motor shield object with the default I2C address Adafruit_MotorShield AFMS ...
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1answer
711 views

Errors seen whilst compiling with AdaFruit Motor Shield (“invalid library”)

Whenever I compile a sketch, change the Tools > Board selection, or open/close Boards Manager/Library Manager I get the following message in the console: > WARNING: Spurious .github folder in '...
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1answer
371 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
231 views

Able to make continous music loop in Arduino and control the volume of the music with light sensor reading? [closed]

I'm new to Arduino and am planning on making a simple program in Arduino that will play and loop a sound file on the computer whilst controlling the loudness of the music based on reading from a light ...
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1answer
148 views

Applause reactivity

I'm making a pretty basic light circuit and I'd like to have it react to applause or laughter, but NOT during regular speech, amplified over speakers. I'm wondering if anyone has already made a ...
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0answers
429 views

How to attach Arduino MKR1000 to a shield meant for Arduino UNO?

I have an Arduino MKR1000 and need to interface it to an Adafruit Music Maker shield, which has pinouts for an Arduino UNO. Maybe I'll have to attach female headers, and then jumper pins over. Which ...
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1answer
169 views

Will this SensorHub work?

As a project I have to build a SensorHub with multiple sensors. I am relatively new to the Arduino and circuit world, so I need a little help. The Goal is to build hub with multiple sensors and to be ...