You can use the Adafruit ADG728 1-to-8 Analog Matrix Switch to connect between eight analog signals, much like a set of 8 mechanical switches. These chips tend to be tiny surface mount parts, so this breakout will let anyone use the ADG728 switch for signals up to 5V, without fiddly soldering. The Adafruit ADG728 1-to-8 Analog Matrix Switch guide has everything you need to get started with using this breakout. There’s pages for overview, pinouts, CircuitPython, Arduino and resources for download. Read more at Adafruit ADG728 1-to-8 Analog Matrix Switch ..read more

The Adafruit ADG729 Dual 1-to-4 Analog Matrix Switch lets you connect between two sets of four analog signals, much like 8 mechanical switches. The ADG729 uses I2C to select which of the 8 channels switches to turn on or off. Four channels connect to the DA analog pin, and the other four channels connect to the DB analog pin. The Adafruit ADG729 Dual 1-to-4 Analog Matrix Switch guide has everything you need to get started with using this breakout. There’s pages for overview, pinouts, CircuitPython, Arduino and resources for download. Read more at Adafruit ADG729 Dual 1-to-4 Analog Matrix Swit ..read more

The Adafruit Infrared IR Remote Receiver has two selectable IR receiver chips. Usage is simple: Power the board by connecting V+ and ground to 3 to 5VDC, point a 38KHz remote control at the sensors and press some buttons. The demodulated IR envelope is piped out the Signal pin into your microcontroller which will then need to decode it. The Adafruit Infrared IR Remote Receiver guide has everything you need to get started with using this breakout. There’s pages for overview, pinouts, CircuitPython, Arduino and resources for download. Read more at Adafruit Infrared IR Remote Receiver ..read more

DigiKey shared this vide on Youtube! Which should you use for your project, Arduino or Raspberry Pi? In this video, Becky Stern shows you the primary differences and explains why you would choose a microcontroller or single board computer (SBC) for your project. See more ..read more

tebl on GitHub has built three projects to enhance radio-controlled cars using microcontrollers programmed in Arduino. Module Description RC Light System A functional light system for RCs. It’s big, bulky and does mostly what I want it to do. RC Exhaust Controls an RGB LED mounted inside the exhaust pipe of an RC. On heavy throttle it starts glowing red, ease up on the throttle afterwards and you get flashing colours as it backfires. RC Dashboard Connected to the receiver, it shows a digital throttle gauge on a small OLED-screen. Check it all out on GitHub ..read more

An optical reflective sensor is a composite electronic device with two elements – an IR LED and an IR photo-transistor. The IR LED blasts light, and when something bounces the light back to the photo-transistor, the transistor turns on and the amount of current flowing through it increases. This makes the sensor great at detecting when something is in front of the sensor. The Adafruit STEMMA Reflective Photo Interrupt Sensor guide has everything you need to get started with using this breakout. There’s pages for overview, pinouts, CircuitPython, Arduino and resources for download. Read more a ..read more

The Adafruit LTC4316 I2C Address Translator does on the fly I2C address translation. There’s an ‘input I2C’ half, and an ‘output I2C’ half. And any devices on the ‘output’ half will automatically have their addresses translated from the input half. Specifically, each device will have bit A6 flipped (most-significant-bit of the address) and then bits A4 and A5 can also be flipped or kept the same, with the two DIP switches on board. To determine the translated address, we use XOR bitwise math. The Adafruit LTC4316 I2C Address Translator guide has everything you need to get started with using t ..read more

It’s half USB key, half temperature-humidity sensor… it’s the Adafruit SHT4x Trinkey. There’s an ATSAMD21 microcontroller on board with just enough circuitry to keep it happy. One pin of the microcontroller connects to a NeoPixel LED. Another pin is used as a capacitive touch input on the end. A reset button lets you enter bootloader mode if necessary. The Adafruit SHT4x Trinkey guide has everything you need to get started with using this board. There’s pages for overview, pinouts, CircuitPython, Arduino, CPython and resources for download. Read more at Adafruit SHT4x Trinkey ..read more

Cool build from maker WesleydeGraaf! This would definitely come in handy for a charity walk-a-thon or school track and field day. A simple lap/run counter using RFID for users. Uses a database for storing the lap count of users. Code can be easily changed to a checkpoint system or other system. See the full project details here on Instructables ..read more

The Adafruit Proto Doubler PiCowBell is intended to be treated like a mini solder-less proto plate to simplify programming and sensor connectivity for your Raspberry Pi Pico board. Reset button? Yes! STEMMA QT / Qwiic connector for fast I2C? Indeed. Battery with recharging and on/off switch? Affirmative. Plug-and-play so no soldering necessary when used with a Pico H or Pico WH? Here you go! The Adafruit Proto Doubler PiCowbell guide has everything you need to get started with using this breakout. There’s pages for overview, pinouts, CircuitPython, Arduino and resources for download. Read mor ..read more