touch up speaker phat draft

draft/overlay/speaker-phat.md

@@ -1,13 +1,13 @@
 <!--
 ---
-name: pHAT DAC
+name: Speaker pHAT
 class: board
 type: audio
-formfactor: Speaker pHAT
+formfactor: pHAT
 manufacturer: Pimoroni
-description: An I2S digital speaker and VU meeter
+description: An I2S digital speaker and VU meter
 buy: https://shop.pimoroni.com/products/speaker-phat
-image: 'pimoroni-speaker-phat.png'
+image: 'speaker-phat.png'
 pincount: 40
 eeprom: no
 power:
@@ -35,14 +35,19 @@ pin:
 install:
   'devices':
   - 'i2s'
+  - 'i2c'
+i2c:
+  '0x54':
+    name: LED driver
+    device: sn3218
 -->
 #Speaker pHAT
 
-Speaker pHAT crams an I2S DAC and mono amplifier, a tiny 8Ω 2W speaker, and a 10 LED bar graph all onto one teeny little pHAT. It's the neatest way to add audio to you Pi project, and its beautiful artwork evokes an 80s boombox!
+Speaker pHAT crams an I2S DAC and mono amplifier, a tiny 8Ω 2W speaker, and a 10 LED bar graph all on a board no bigger than a Pi zero.
 
-Though designed to match the format of the Raspberry Pi Zero it is compatible with all 40-pin GPIO Raspberry Pi variants (2/B+/A+/Zero).
+Though designed to match the format of the Raspberry Pi Zero it is compatible with all 40-pin GPIO Raspberry Pi variants (2/3/B+/A+/Zero).
 
-To get the pHAT DAC set up and ready to go you can use the one-line product installer:
+To get the Speaker pHAT set up and ready to go you can use the one-line product installer:
 
 ```bash
 curl -sS https://get.pimoroni.com/speakerphat | bash

src/en/overlay/piglow.md

@@ -23,6 +23,13 @@ pin:
     mode: i2c
   '5':
     mode: i2c
+install:
+  'devices':
+  - 'i2c'
+i2c:
+  '0x54':
+    name: LED driver
+    device: sn3218
 -->
 #PiGlow