Added page for new Pimoroni RP2040 board

_board/pimoroni_plasma2040.md

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+---
+layout: download
+board_id: "pimoroni_plasma2040"
+title: "Plasma 2040 Download"
+name: "Plasma 2040"
+manufacturer: "Pimoroni"
+board_url: "https://shop.pimoroni.com/products/plasma-2040"
+board_image: "pimoroni_plasma2040.jpg"
+date_added: 2021-08-11
+features:
+  - STEMMA QT/QWIIC
+  - USB-C
+  - Breadboard-Friendly
+---
+
+Swathe everything in rainbows with this all-in-one, USB-C powered controller for WS2812/Neopixel and APA102/Dotstar addressable LED strips, with RP2040 in the driving seat - just perfect for whipping up some custom mood lighting.
+
+## Features
+* Powered by RP2040 (Dual Arm Cortex M0+ running at up to 133Mhz with 264kB of SRAM)
+* 2MB of QSPI flash supporting XiP
+* Compatible with WS2812/Neopixel/SK6812 and APA102/Dotstar/SK9822 LEDs
+* Sturdy screw terminals for attaching your LED strip
+* USB-C connector for power and programming
+* Qw/ST (Qwiic/STEMMA QT) connector
+* Low side current sensing (accessible via ADC3)
+* Reset, BOOT and two user buttons (the BOOT button can also be used as a user button)
+* RGB LED
+
+## About the 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.
+
+## Purchase
+* [Pimoroni](https://shop.pimoroni.com/products/plasma-2040)