Add Unicorn HAT Mini

draft/overlay/pimoroni-unicorn-hat-mini.md

@@ -0,0 +1,59 @@
+<!--
+---
+name: Unicorn HAT Mini
+class: board
+type: led
+formfactor: phat
+manufacturer: Pimoroni
+description: 17x7 RGB LED Matrix
+url: https://shop.pimoroni.com/products/unicorn-hat-mini
+github: https://github.com/pimoroni/unicornhatmini-python
+buy: https://shop.pimoroni.com/products/unicorn-hat-mini
+image: 'pimoroni-unicorn-hat-mini.png'
+pincount: 40
+eeprom: no
+power:
+  '1':
+  '2':
+ground:
+  '6':
+  '9':
+  '14':
+  '20':
+  '25':
+  '30':
+  '34':
+  '39':
+pin:
+  '19':
+    mode: spi
+  '23':
+    mode: spi
+  '24':
+    mode: spi
+  '26':
+    mode: spi
+  '29':
+    name: Button A
+  '31':
+    name: Button B
+  '36':
+    name: Button X
+  '38':
+    name: Button Y
+
+-->
+# Unicorn HAT Mini
+
+Unicorn HAT Mini is a 17x7 matrix of RGB LEDs that can be controlled, both in terms of colour and brightness, to display animations, text, simple images, and more. The four tactile buttons add tonnes of utility to control the colour or brightness of the LEDs, or as controls for simple games, or whatever else you like.
+
+## Features
+
+* 17x7 matrix of RGB LEDs (119 total)
+* Individual colour/brightness control of each LED
+* Holtek HT16D35A LED matrix driver chip (x2)
+* Four tactile buttons
+* Fully-assembled (no soldering required)
+* Compatible with all 40-pin header Raspberry Pi models
+* Python library
+