Swathe everything in rainbows with this all-in-one, USB-C powered controller for WS2812/Neopixel and APA102/Dotstar addressable LED strip.
Plasma 2040 is a RP2040-based driver board for addressable LED strip (also known as magical rainbows by the metre). It's designed to make rigging up bits of custom, programmable lighting as straightforward as possible - perfect for whipping up some quick under-cupboard illumination, dramatically underlighting your sofa or providing some atmospheric mood-lighting for your workspace, PC or vivarium.
Plasma 2040 is powered and programmable by USB-C and, because USB-C is capable of drawing up to 3A of power, that's enough to power a healthy chunk of LEDs. There's three useful buttons that you could use for turning the lights on and off or to switch between colours or effects, plus a reset button and an eternally popular 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 - how about hooking up an RGB potentiometer to adjust the speed or hue of your lights, an air quality sensor to make your desk lighting into a giant thermometer or tell you when you should crack a window or a light sensor to turn them on automatically when it gets dark?
About RP2040
Raspberry Pi's RP2040 microcontroller is a dual core ARM Cortex M0+ running at up to 133Mhz. It bundles in 264kB of SRAM, 30 multifunction GPIO pins (including a four channel 12-bit ADC), a heap of standard peripherals (I2C, SPI, UART, PWM, clocks, etc), and USB support.
One very exciting feature of RP2040 is the programmable IOs which allow you to execute custom programs that can manipulate GPIO pins and transfer data between peripherals - they can offload tasks that require high data transfer rates or precise timing that traditionally would have required a lot of heavy lifting from the CPU.
NOTES
- LED strip and connectors are sold separately, check out the extras tab for some options!
- Our C++/MicroPython software uses the RP2040's PIO state machines to drive each strip separately - this board only has one set of LED strip connectors, but if you're up for some inventive wiring it's possible to drive multiple strips simultaneously, even if they're of different types!
- If you're curious about how much current your LEDs are consuming, we've incorporated some current sensing circuitry onto this board, which you can measure by reading ADC3. You could use this in your code to do things like adjusting the brightness of your LEDs based on available power!
