3" Speaker 4Ω (5W)

Whoop whoop! This is a lovely little speaker ideal for embedding into all sorts of projects.

Providing a solid 5W of power at 4Ω it's perfect for internet radio, mini arcade cabinets, irritating warning sounds, and more! We hook it up to the Adafruit Stereo 2.8W Class D Audio Amplifier for some dope beats in the workshop.

Dimensions: 77.8mm x 77.8mm (25.5mm deep)
Mounting points: 60mm apart
Weight: 55g

11 customer reviews

a month ago

Extremely well thought board. It was as if I custom designed a board for an ntp enabled wall clock I was making for my lab. It shows lower power consumption than I initially expected, as the leds are very bright and there is no need to have them working 100% brightness indoors. Micropython support was excellent. The latest upgrade with the rp2350 was also welcome.

by Ioannis about Pico 2 W Unicorn via REVIEWS.io

a year ago

The LEDs look great, very bright and vibrant colours. The photos don't really do it justice. With the included code samples, and a bit of messing around I was able to get the weather/clock programme running. I had ambitions of doing something else, but the clock was exactly what I needed anyway. Once combined with a 3D printed case (which was easy to find the plans for), i was able to assemble it and put it on a sheft as a great background during video calls, and a nice conversation starter. My only sightly negative is that the world has moved to USB C, but this still has micro USB.

by Dylan about Pico 2 W Unicorn via REVIEWS.io

a year ago

Used this to make a clock for our classroom. The clock updates its time connecting to an NTP server. It will periodically (every week) update its time so it is never far off from the actual time.

by Dennis about Pico 2 W Unicorn via REVIEWS.io

a year ago

The Galactic Unicorn is a nice display. It seems to have better diffusion and control over low brightnesses than typical RGB pixels. It doesn't have the super higher brightness of other RGB pixels but arguably that's a positive as it keeps the current capped at 1A (Pimoroni's documented value). The small speaker on the back is surprisingly loud for such a small device. It's easy to connect to i2c peripherals but not so easy to connect to analogue devices or i2s ones. I would have liked for at least one of the ADC-capable GPIO to be made available on a connector. Or use the existing connectors and have some PCB tracks to cut to get rid of the pullup resistors for anyone who wants to use i2s or analogue peripherals. It comes with two metal pins for a stand. These work well for the Inky Frame (with a heavy battery pack changing the centre of gravity) but not so well on the Galactic Unicorn from a brief experiment. I don't think they are high enough on the board so it stands near vertical and is prone to being knocked over. I'd imagine the weight of a battery pack would help. There's a lot you can do with the board and its Pi Pico W in MicroPython. I've switched to C++ as I need to squeeze a bit more performance from it. I've added an external microphone module and enhanced the Pimoroni Blunicorn software to use that. I've also added a guitar/instrument tuner feature to it. All of that can be found on Instructables, links below. https://www.instructables.com/Making-a-Guitar-Tuner-and-Audio-Spectrum-Analyser-/ https://www.instructables.com/Adding-a-Microphone-to-Pi-Pico-W-on-Pimoroni-Galac/

by Kevin about Pico 2 W Unicorn via REVIEWS.io

2 years ago

A great source of fun! I love Pimoroni for making PCBs beautiful and this matrix is no exception. It looks beautiful and its legs make it super easy to use as a desktop toy. The LEDs are superb, bright enough to be visible on a sunny day and also provide a nice glow at night. Plenty of buttons make it easy to add many controls to your application. So it's just a matter of writing a handler for buttons pressed while when there is a limited amount of buttons you have to build complex sequences to control all features you want. Finally, Pimoroni SDK is easy to use so it's almost plug and play. I spent some time to understand how to import all required libraries if I intend to keep my project in a separate location from Pimoroni's Pico examples directory, but anyway, quite easy to sort out all setup tasks. So overall I'm pleased with the product and recommend it to anybody who wants to play with LED matrix.

by Andrei about Pico 2 W Unicorn via REVIEWS.io

2 years ago

Cosmic Unicorn is easy to use because MicroPython is preinstalled and debugging with Thonny works really well. I used my Cosmic Unicorn to build a clock that also displays the percentage of electricity from renewable sources: https://www.hackster.io/andreas-motzek/clock-and-green-energy-display-with-cosmic-unicorn-641dcb

by Andreas about Pico 2 W Unicorn via REVIEWS.io

2 years ago

This board is incredible, so many applications are possible. It has a pico w on board so it's super flexible, WiFi and Bluetooth, even a little speaker. You can also connect two breakout boards with sensors and such. Incorporate data from the Internet and you've got yourself an info display with anything you desire to display! News, weather, sports scores, train times, anything! Epic LEDS from planet pimoroni! 🖖👨‍🚀

by glenn about Pico 2 W Unicorn via REVIEWS.io

2 years ago

Works brilliantly from Thonny. I was easily able to set up the WiFi to use #cheerlights that change colour with a Tweet. I also reprogrammed the Nostalgia Prompt to show my favourite computer I work on at The National Museum of Computing.

by Tony about Pico 2 W Unicorn via REVIEWS.io

2 years ago

Amazing bit of kit for the money! Very pleased with the top-tier customer service from Pimoroni when the first board failed, too. Thanks team 🤗

by Jaie about Pico 2 W Unicorn via REVIEWS.io

2 years ago

Brilliant board! Bright, fast and great fun. Excellent documentation and support with the usual high build standard. Works straight out of the lovely storage box! It is easy to add STEMMA/QT I2C sensors and the wifi gives it an added dimension. Plenty of buttons for control and the sound system works well. It's bigger than I expected. I've written a couple of extra tutorials which you can find here: https://www.instructables.com/Galactic-Unicorn-Graphical-Workout/ and https://www.instructables.com/Galactic-Unicorn-Bounce-Simple-GFX-Demo/

by Anonymous about Pico 2 W Unicorn via REVIEWS.io

2 years ago

The Galactic Unicorn is a beauty. Solid construction and the built-in stands and usb cable are high quality. Some great examples built in and I can't wait to find some time to start playing with it more soon.