Interstate 75 W is a Pico W-based driver board for HUB75-style LED matrices. It’s designed to plug neatly into the back of a LED panel, and provides a quick and easy way to whip up some scrolling signage or an eye-catching LED display for sensor outputs. Because it has a Raspberry Pi Pico W aboard you can also use it to display information from the internet!

I75 W is powered from the Pico W’s micro-USB port, which should also be able to power a few connected panels happily, assuming you’re not planning anything too eye-bleedingly bright. There are also two useful buttons, a reset button and an onboard RGB LED.

We’ve also popped a QW/ST connector on there, to make it super easy to plug in Qwiic or STEMMA QT breakouts.

Features

• Raspberry Pi Pico W Aboard
  • Powered by RP2040 (Dual Arm Cortex M0+ running at up to 133Mhz with 264kB of SRAM)
  • 2MB of QSPI flash supporting XiP
  • Powered and programmable by USB micro-B
  • 2.4GHz wireless
• Compatible with our 32×32, 32×64 and 64×64 LED matrices.
• Sturdy screw terminals for powering the LED panels.
• Qw/ST (Qwiic/STEMMA QT) connector
• Two user buttons
• Reset button
• RGB LED
• Fully-assembled (no soldering required)
• Measurements: approx 64.3 x 40 x 18mm (L x W x H, including connectors)
• C++/MicroPython libraries
• Schematic

Software

OurC++/MicroPythonlibraries include support for Interstate 75 W. You’ll get the best performance using C++, but if you’re a beginner we’d recommend using our batteries included MicroPython build for ease of getting started. Our HUB75 module lets you draw individual pixels to your matrices and uses RP2040’s PIO state machines and DMA to minimise CPU usage and maximise luscious, 10-bit gamma-corrected colour depth.

Alternatively, you can draw on your LED matrices using our lightweight PicoGraphics library, which includes convenient functions for displaying text and shapes, and we’ve provided some examples to get you started. Note that if you’re chaining panels, PicoGraphics only currently supports these specific arrangements of matrix panels (WxH):

• 32×32, 64×32, 96×32, 128×32
• 64×64, 128×64, 192×64, 256×64

MicroPython

• (Learn) Getting Started with Interstate 75
• (Readme) Installing MicroPython
• (Readme) MicroPython FAQs(and troubleshooting)
• Download pirate-brand MicroPython(you’ll want the `Pico W` .uf2, v 1.19.11 or later)
• MicroPython examples
• Interstate 75 function reference
• Picographics function reference

C/C++

• C examples
• Picographics function reference

Connecting Breakouts

The Qw/ST connector on Interstate 75 W makes it super easy to connect upQwiicorSTEMMA QTbreakouts. If your breakout has a QW/ST connector on board, you can plug it straight in with aJST-SH to JST-SH cable.

Breakout Garden breakouts that don’t have a Qw/ST connector can be connected using aJST-SH to JST-SH cableplus aQw/ST to Breakout Garden adaptor. Want to use >2 breakouts at the same time? Trythis adaptor!

• List of breakoutscurrently compatible with our C++/MicroPython build.

About Pico W Aboard

Our new Pico W Aboard products come with abuilt in Raspberry Pi Pico W. This means you get all the advantages of a RP2040 microcontroller – a speedy fast dual-core ARM processor, a dynamic, growing ecosystem and a choice of different programming methods to experiment with. Most excitingly though, Pico W haswireless connectivity, so your Pico/RP2040 devices can communicate with each other, and the internet!