Initial commit for pillbug board addition

_board/pillbug.md

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+---
+layout: download
+board_id: "pillbug"
+title: "PillBug Download"
+name: "PillBug"
+manufacturer: "MechWild"
+board_url: "https://mechwild.com/product/pillbug/"
+board_image: "pillbug.jpg"
+date_added: 2022-11-10
+downloads_display: true
+family: nrf52840
+bootloader_id: pillbug
+# Features are tags; they should be limited to the items in this list and spelled exactly the same.
+# Include only the features your board supports, and remove these comment lines before committing.
+# Breadboard-Friendly is a parallel pin layout with minimal non-critical perpendicular pins
+features:
+  - Battery Charging
+  - Bluetooth/BTLE
+  - Breadboard-Friendly
+  - USB-C
+---
+
+The PillBug is a BLE enabled development board powered by the nRF52840 that is designed to be a drop in replacement for the stm32f401/stm32f411 blackpill development board. This board was designed for compatibility with blackpill driven keyboards and will work as a simple replacement in most cases. The PillBug features 3.7V Li-Ion battery charger, a software controlled hardware cutoff for powering peripherals, a controllable status LED, and compatibility with blackpill's pinouts for I2C/SPI/UART.
+
+## Technical details
+
+* BLE (Bluetooth Low Energy) capable
+* nRF52840 powered with 1MB Flash memory and 256KB RAM
+* Preloaded Adafruit nRF52 Bootloader utlizing UF2 and DFU flashing options
+* Software controlled blue status LED that can be configured by application
+* Hardware controlled charging red status LED
+* 3.3V GPIO logic and power provided through VCC pins
+* Software controlled MOSFET to disable providing power through the power pins to external peripherals
+* 30 Total GPIO pins in an easy to use and breadboard friendly layout
+* RTC (real-time clock) capabilities provided through use of 32.768kHz oscillator (necessary for BlE)
+
+## Learn More
+
+* [MechWild](https://mechwild.com/product/pillbug/)
+
+## Purchase
+
+* [MechWild](https://mechwild.com/product/pillbug/)