If you're looking to interface with telco, retro or industrial equipment you'll probably run into RS-232 interfaces. The Adafruit RS232 Pal - Two Channel UART to RS-232 Level Shifters is your friend in such cases, giving you two duplex channels of level shifting and taking care of the high/negative voltage generation all in a low cost breakout board. We use the trusty MAX3232E so you know it will work great for all your RS-232 needs, up to 250Kbps.

The Adafruit Infrared Transceiver breakout can transmit and receiver 940nm remote control data in one handy solder-free package. For the emitter half, we use the same schematic and setup as our High Power IR LED Emitter breakout for 10 meters of range! For the receiver half, we use the same 'vertical' IR sensor in our IR Receiver breakout. The sensor recognizes remote control style modulated signal at 38KHz and 940nm wavelength.

The RP2040 Adalogger is the same size and shape as a Feather and is intended to make your next data logging or data reading project super easy. Micro SD card socket wired for SPI or SDIO? Yes! STEMMA QT / Qwiic connector for fast I2C? Of course! NeoPixel? It's a-glowin' This board will work excellently with Arduino or CircuitPython / MicroPython for any data recording / retrieving projects.

If you are feeling the stress and strain of modern life a Wheatstone bridge and you want to quantify it, this handy breakout will do the job, no sweat! The Adafruit HX711 Breakout contains a super-high-resolution 24-Bit differential ADC with extra gain circuitry that makes it perfect for measuring strain gauges / load cells or other sensors that have four wires that are connected in a Wheatstone bridge arrangement.

By customer request, this is a DS2484 Stemma QT board that uses a I2C-to-1-Wire controller chip, with ESD protection and support for split supplies. You can easily connect it to an existing I2C bus and then use the screw terminals to attach multiple DS18B20's, or pair it with our 1-Wire chaining breakouts for fancier experimentation.

This little breakout makes it easy to add a single NeoPixel to a project, with mounting holes and a pluggable connector. The PCB is less than 0.5"x0.5" and comes with two 3-pin JST SH 1mm pitch connectors for input and output. On the opposite side, a 5050 (5mm square) classic RGB NeoPixel that can be powered and controlled with 3.3V or 5V power.

We love using chips with 'native USB' peripherals - that's the magic silicon that lets a microcontroller act like an HID keyboard or mouse or disk drive or MIDI synth. It's a standard addition on SAMD21, RP2040, and even the latest ESP32-S2 and ESP32-S3 boards. But what about when you have a classic ATmega328 Uno? Or an original ESP32 or ESP8266? Maybe even a single-board computer like a Raspberry Pi? We would say "sorry...that's not possible" UNTIL NOW!

A little over a decade ago, the YBox2 Kit was all the rage. It used a Parallax Propeller chip with Ethernet to connect to the Internet and display custom widgets via a composite video output. Years later, it felt like it was time to revisit this project concept with new hardware. The next generation YBox, the YBox3, uses a Raspberry Pi Pico W to run Arduino code that connects to WiFi and displays custom widgets via DVI output with a DVI PiCowbell.

Build a box of sound using CircuitPython and PropMaker Feather RP2040.

Blast-off to Pixel Planet with the Adafruit Pixel Trinkey, a co-pilot for those who like to shine bright. This little microcontroller board plugs into your computer's USB port and can drive tons of NeoPixel (SK6812, WS2812, etc) or DotStar (e.g. AP102) LEDs without having to do any soldering or complex wiring. All from the convenience of your computer with support for Arduino, CircuitPython or Windows 11's built-in Dynamic Light Control.

If you want to read infrared signals from remotes with different carrier signals, especially when you don't know the frequency, this Adafruit TSMP96000 Code Learning Infrared IR Receiver Breakout has the ability to detect IR signals from 20 to 60KHz and provide the carrier signal for analysis. This is used for code learning situations where you want your device to work with any IR remote control.

Make a prop thumper from the book and movies Dune. With motion and sound, you can summon the monster of all sandworms.

While there is absolutely nothing stopping you from just wiring up DS18B20's directly to your microcontroller, these extender breakouts will make things just a lil bit easier. You can use JST 3-pin cables to chain the extenders, the soldered-on screw terminal blocks mean you can easily connect DS18B20's in TO-92 or cable style with just a screwdriver. Each extender has a 4.7K signal pullup on board that can be disabled by cutting a trace, and a buffered signal LED that will let you know when there's data transmission on the 1-Wire line.

It's half USB Key, half TRRS breakout... it's the Adafruit TRRS Trinkey specifically designed for Assistive Technology hackers and creators as a simple and low cost, but also flexible and extendable AT device. Many AT interface devices use 3.5mm audio jacks to create switches or variable inputs - often mono TS or stereo TRS plugs. On the TRRS Trinkey, we connect all 6 pins of a 'switched' TRRS jack - tip, ring 1, ring 2, sleeve and the tip switch plus ring 1 switch - to 6 GPIO pins on the microcontroller.

Make a USB HID media controller with NeoPixel LEDS, QT Py RP2040 and Rotary Encoder STEMMA QT