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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Using Adafruit GFX Font with Goldelox Serial Library on 4D System's uOLED-96-G2
It took me awhile to get this work with Arduino, but I am trying to figure out how to make the Goldelox Serial Library which I have working, take a custom font from the Adafruit_GFX library and use ...
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2answers
63 views
Getting Firmata to control WS2801 LEDs
I am trying to control a strip of WS2801 LEDs through an arduino uno running firmata from Python on my laptop.
I've written some basic code based on adafruit's library here (from line 187):
from ...
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0answers
18 views
Arduino not communicating with adafruit fona SIM808 module
i have uploaded my code to the SIM808 board but the serial monitor is displaying "couldnt find FONA"
#include "Adafruit_FONA.h"
#define FONA_RX 9
#define FONA_TX 8
#define ...
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1answer
92 views
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
How would this be used; Adafruit CC3000 library, "Utility\socket.h?"
...
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2answers
25 views
How to store a function in a constant?
I'm trying to do something to this affect:
const string first_color = strip.Color(0, 60, 0, 0);
With the intended outcome being that I could use first_color wherever I'd have used strip.Color(0, 60, ...
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1answer
28 views
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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0answers
11 views
Does the arduino micro support the adafruit micro sd card breakout and the library?
Just a quick question. Does the arduino micro support the adafruit micro sd card breakout+?. Adafruit also has a library for this. Does the arduino micro support this library as well? I know some ...
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1answer
82 views
ESP8266 Arduino 2.2inch ILI9341 TFT library
I recently got one TFT LCD from aliexpress which supports SPI and uses ILI9341.
This is the one.TFT LCD
I have the ESP8266 EspressoLite 1 board, and I am using ESP8266 Arduino.
...
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1answer
31 views
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" ...
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2answers
42 views
Is a 9v battery appropriate for a piezo and 1 LED?
I'm making a basic "door open" detector that, when a door is opened, it turns on an LED and then sounds an alarm via a piezo.
This is controlled via a 5v Adafruit Trinket.
Is a 9v battery the ...
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1answer
48 views
Second I2C address not accepted
I have set up 2 DHT22 sensors and 2 BMP280 sensors with an Arduino Uno SMD R3 board. The DHTs are working fine and are outputting correct temperature and humidity values to the Serial monitor. The ...
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1answer
14 views
Adafruit Flora V2 use onboard and external NeoPixels
I am working on wearable project using an Adafruit Flora V2, and for this project I need to use the onboard NeoPixel. I also need to use Neopixels that are attached to the D6 pin (is it a pin?). I ...
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2answers
53 views
Arduino and 2 Adafruit Fingerprint modules working together
I want to do a project with fingerprint access control. But my client wants one on both sides of the door (inside and outside). Now I am using this product Adafruit Fingerprint module but I don't want ...
0
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1answer
34 views
Adafruit Feather 32u4 Bluefruit LE (Modify Raytac model)
As part of our prototyping, we need to slightly modify "Adafruit
Feather 32u4 Bluefruit LE" to not include the antenna available in
Raytac model MDBT40.
Is it possible to modify Raytac, or it is not ...
3
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1answer
196 views
Streaming audio from PC to Arduino over WiFi
Say I wanted to, purely hypothetically, set up a pirate radio station by connecting an Arduino to a WiFi network away from home, streaming music to the Arduino, decoding it, and broadcasting it with ...
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1answer
31 views
5V Trinket only outputting 3.3V?
Unless my multimeter is on the fritz, it would seem my 5V Adafruit Trinket is only outputting 3.3V when connected w/ DC power.
When connected via USB, totally fun. Full 5V. But if I disconnect that ...
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1answer
39 views
Arduino Uno Constantly Resets with WiFi and 4 Relay Module
I am using an Arduino Uno with a 4 relay module (found here: ...
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1answer
26 views
Trinket works with USB but not with wall adapter
My Adafruit 5V Trinket works fine when powered via USB connected to my computer (and the power going in to the Trinket is 5V), but if I use a 9V wall adapter with a microUSB adapter, it just powers on ...
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3answers
105 views
How can I reduce the size of my sketch?
Looks like I'm overshooting the storage of my Adafruit Trinket:
Sketch uses 5,600 bytes (105%) of program storage space. Maximum is 5,310 bytes.
Global variables use 109 bytes of dynamic memory.
...
1
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0answers
48 views
Library for DIY Keyboard
I'm planning on making my own Bluetooth Mechanical keyboard using the Adafruit Feather 32u4 Bluetooth LE. Something that I haven't really figured out is the programming side of things. I was wondering ...
1
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2answers
52 views
Soldering headers screwed up Trinket?
Last week I purchased a couple of Trinkets from Adafruit (5v micro-USB). The first thing I did was solder the headers to one of them. I did the whole setup process w/ the Arduino IDE and didn't have ...
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1answer
41 views
LEDs instruction code does not loop
I am using Neopixel Library and a Trinket Pro 5V Microcontroller to chase first three LEDs on a strip and then burst the last 2 (could be modified based on the number of LEDs).
The LEDs chase only ...
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0answers
25 views
Debugging arduino shield for varying voltage
I'm using this motor shield for arduino from adafruit. It says it can drive 4 DC motors with it. However, two terminals M3 & M4 (as marked in the image) seem to be supplying lesser voltage.
To ...
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2answers
99 views
Why does DHT-library (and others) only allow one object instance?
I came across the problem to handle two DHT22 devices.
I use the Adafruit DHT Sensor library.
Since my Arduino sketch works as a "relay" for Serial commands on a host, I tried to wire up and ...
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3answers
53 views
Adafruit Neopixel Library- only the first 16 LEDs respond
I am using Adafruit Neopixel Library to work with a strand of 21 RGB LEDs.
AT this point only the first 16 light up. It is not a soldering problem, battery issue or a short.
This troubleshooting page ...
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0answers
23 views
Should the Adafruit MotorShield be used with the PeeWee Runt Rover?
I know this may be a beginner question but here goes.
I recently bought the PeeWee Runt Rover which comes with two DC gear-motors built in, Here's all the info I have on them.
I also bought the ...
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1answer
56 views
Turning all leds on (FAST.LED)
In Fast.Led lib for arduino there is a code to turn off all leds
FastLED.clear ();
Is there also a shortcut to turn all leds ON, and with a specific color
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1answer
28 views
Motor Shield not giving full power, LED DIMS
I have an Adafruit Motor Shield, the V1. I have been using this thing with my OPSEPP Uno and a stepper motor with no issues. (Powered by 12v DC wall wart [CASIO]).
My question, or issue, not sure ...
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2answers
313 views
Exit status 1 expected primary-expression before ']' Arduino
Here's the whole error:
Arduino: 1.6.7 (Windows 7), Board: "Arduino/Genuino Uno"
*\readMifare\readMifare.ino: In function 'void loop()':
readMifare:113: error: expected primary-expression before ...
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0answers
31 views
Adafruit Trinket 3v with LED matrix backpack producing error
I have been wanting to create a Arduino watch. I built the circuit with an Adafruit Trinket 3v and an Adafruit LED matrix backpack (8*8). When I try to upload this example code:
...
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1answer
71 views
Using Arduino Uno to make digital LEDs go to music
I've just started playing around with Arduinos... I found relatively simple project on youtube: https://www.youtube.com/watch?v=5U354Qp6j24. I followed the instructions, loaded up the code, and ...
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3answers
273 views
Why is my Adafruit motor shield not spinning my motors?
I'm using the Adafruit Motor Shield v2.3. I'm powering the Arduino with a USB cable and I'm powering the motor shield with a 9 volt battery.
I removed the vin pin, and I'm using this tutorial/code to ...
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1answer
142 views
DCMotorTest from the Adafruit site – got fatal error exit status 1
New to Arduino, I plugged in DCMotorTest from the Adafruit site and got this error message: a fatal error exit status 1
/*
This is a test sketch for the Adafruit assembled Motor Shield for Arduino ...
4
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1answer
159 views
BLE SPI Module with ATtiny85
Adafruit carries a number of Bluetooth LE 4.0 modules in their store, notably the SPI (https://www.adafruit.com/products/2633) and UART (https://www.adafruit.com/product/2479) version. I have used the ...
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1answer
86 views
Use Adafruit Colorsensor to distinguish between green and red
I am using the Adafruit TCS34725 to sense color. I have used the Colorview code example to set it up to sense all colors, works great. The thing I want is for it to tell me if it is seeing either ...
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2answers
48 views
Adafruit libary and CC3000 shield
I have a Arduino Uno and a CC3000 shield. When I run the example code for Webclient from Adafruits libary it works perfect.
When I switch out address for reading a corresponding text file from my own ...
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0answers
33 views
Refine Colorview Code
How would I refine this to only recognize red and green? I don't need the full functionality of this code, just the ability to distinguish between red and green, and output that respectively.
I also ...
0
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1answer
60 views
Trying to understand compilation error message
C:\Users\Field\Documents\Arduino\Adafruit_TCS34725-master\examples\tcs34725autorange\tcs34725autorange.ino:2:31: fatal error: Adafruit_TCS34725.h: No such file or directory
#include ...
0
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1answer
33 views
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 ...
3
votes
1answer
72 views
unable to use RGB matrix and the serial monitor at once
Recently I bought the following matrix:
https://learn.adafruit.com/32x16-32x32-rgb-led-matrix/overview
I own an Arduino Uno for those who are interested.
I got the 32x32 variant and I am very happy ...
3
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2answers
654 views
How can I load fonts into Adafruit GFX for TFT display (ILI9341)
I get a compile error when I try to set a different font in Adafruit GFX on a TFT display on my Arduino Uno.
I'm testing a new TFT shield for Arduino equipped with an ILI9341 by using the Adafuit GFX ...
0
votes
2answers
60 views
uint8_t etc as color variable
I am very new to coding and I am attempting to teach myself the best I can. I have no prior knowledge of coding and am filling in the blanks via YouTube and forums alike. One place I keep getting ...
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1answer
47 views
Arduino Micro project with Bluetooth low energy
I created my project prototype with Arduino Micro and Adafruit Bluetooth low energy device.
Now I need to develop the prototype to production (like a small USB device). I just need Rx, Tx, 3V pin ...
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0answers
105 views
Working with Seed BLE Shield and Adafruit Feather BLE
Long story short: I need to pair these devices:
Arduino UNO with Seeed BLE Shield
Adafruit Feather 32u4 Bluefruit LE.
The Seeed shield is configured and able to connect and communicate via the ...
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0answers
73 views
How to add .h file to ino
I'm using the arduino along with a Raspberry pi. For this, I'm using ino to compile sketches through the command line. I now want to use the adafruit motor shield along with my arduino. This requires ...
2
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1answer
70 views
Adafruit TLC5947 breakout board is not working with my Arduino Uno
I am trying to use this board (setup tutorial on left hand nav) with my Arduino Uno. I have tried using their example code, as well as my own simplified code, to turn on a single blue LED.
The ...
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2answers
40 views
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 ...
2
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3answers
443 views
How many LED Strips can we connect to an Arduino Uno? Is there a way to connect 1-3 meters worth without needing extra parts (relays)?
I am looking at Adafruit to purchase some LED strips for a mod for my computer case, and want to power it with an Arduino.
I am looking at the Uno, but the Mega looks good too. I hear the Uno is ...
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3answers
73 views
Drawing amperage with Arduino code
I'd like to preface this by saying I'm a complete beginner, but I have learned a ton already on this project, and I feel like I'm almost there.
I'm using an Arduino Uno and an Adafruit motor shield. ...
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0answers
48 views
How do I record with the Adafruit “Music Maker” MP3 Shield (VS 1053)
I'm trying to record and play audio from an an Arduino using the Adafruit "Music Maker" MP3 Shield (VS 1053)and so far can find no clear information on how to do so. Can anyone explain to me how to do ...
