The Raspberry Pi has an on-board audio jack, which is super handy for all kinds of sound effects and speech, just plug and go! However, for when you want better audio for music playback, or you want to record audio...a USB audio card can greatly improve the sound quality and volume, this tutorial will show you how!
For low-power microcontroller WiFi, check out the Adafruit CC3000 breakouts and shields. The CC3000 hits that sweet spot of usability, price and capability. It uses SPI for communication (not UART!) so you can push data as fast as you want or as slow as you want. It has a proper interrupt system with IRQ pin so you can have asynchronous connections. It supports 802.11b/g, open/WEP/WPA/WPA2 security, TKIP & AES. A built in TCP/IP stack with a "BSD socket" interface. TCP and UDP in both client and server mode, up to 4 concurrent sockets.
This guide will use the capacitive touch pads on the Circuit Playground Express and the capacitive properties of fruit to create a full scale tone piano. We will write the code using CircuitPython to use each of the touch pads to light up the Neopixels in a different color and play a different tone through the onboard speaker.
Gemma may be small, but do not be fooled by its size! It's a tiny sewable microcontroller board, built around the Atmel ATtiny85, a little chip with a lot of power. We wanted to design a little sister to the Flora, something that was small enough to fit into any project, and low cost enough to use without hesitation. Perfect for when you don't want to give up your Flora for a small project
Once you have mastered the basic blinking leds, simple sensors and buzzing motors, it’s time to move on to bigger and better projects. That usually involves combining bits and pieces of simpler sketches and trying to make them work together. The first thing you will discover is that some of those sketches that ran perfectly by themselves, just don’t play well with others. There are ways to effectively juggle multiple tasks on an Arduino. This series of guides will show you how.
This tutorial demonstrates how to connect the Adafruit MAX31855 Thermocouple Amplifier breakout board to the Electric Imp using SPI, as well as how to set up a Xively developer account and a Twitter application. You will log and graph temperature data on Xively, and tweet it to your own Twitter account.
Did you know that the Arduino IDE can be used to program the micro:bit? Now you have yet another way to use this cool board! Learn how to set up Arduino to program your micro:bit, blink some LEDs, read the internal temperature sensor, send and receive data over Bluetooth - even log data to Adafruit.IO!
Trinket may be small, but do not be fooled by its size! It's a tiny microcontroller board, built around the Atmel ATtiny85, a little chip with a lot of power. We wanted to design a microcontroller board that was small enough to fit into any project, and low cost enough to use without hesitation. Perfect for when you don't want to give up your expensive dev-board and you aren't willing to take apart the project you worked so hard to design. It's our lowest-cost Arduino-IDE programmable board!
The very word "servo" implies feedback-based control. But for most RC servos, that feedback signal is not available outside the servo case. So when controlling them from a microcontroller, you never really know if the servo is doing what you tell it to do. These feedback servos have an extra wire for the feedback signal. This lets you monitor the servo motion to verify that it is working as expected. It also lets you use the servo as an input device.
These big, bright displays measures 1.27" or 1.5" diagonal and have 128x96 or 128x128 RGB pixels. The OLED display technology gives you vivid, high contrast images and does not require a backlight. With16-bit resolution for each pixel, you can display a wide range of colors. The SSD1351 driver chip has a 4-wire SPI interface. We also include an on-board boost converter and built-in level shifting for compatibility with both 3.3v and 5v microcontrollers. A micro SD card holder lets you store bitmaps and other data. Our library includes example code to show you how!
Introducing the MENTA, a portable minty Arduino-compatible project that fits into a common mint tin. We took our super popular Boarduino series, and wrapped it with a prototyping area into a rounded PCB that slots directly into an Altoids-sized metal tin. We included everything you expect to jump-start your project: a DC power adapter with polarity protection, beefy 1 Amp 5V regulator and 250mA 3.3V regulator for 3.3V devices, green power LED, red blinky LED, ISP-6 standard reprogramming header, FTDI interface plug to connect an FTDI Friend or cable and female header so you can plug standard Arduino-compatible shields in. There are four mounting holes if you want to attach it permanently to a box or plate, and a massive prototyping area so you can have the finished project all fit together in a protective box.
The proto-screwshield is the ultimate breakout board for an Arduino. It combines a prototyping shield with a full set of 3.5mm screw terminal blocks. The protoshield part lets you build custom circuitry and then you can easily & securely connect wires and sensors to the terminal blocks. Great for panel mounts, buttons, sensors, enclosures etc.