Merge pull request #146 from johnty/master

adding icubex pishield

src/en/overlay/icubex-pishield.md

@@ -0,0 +1,49 @@
+<!--
+---
+name: I-CubeX PiShield 
+class: board
+type: adc
+formfactor: Custom
+manufacturer: Infusion Systems 
+description: 5V Analog to Digital Converter and 5V I2C level shifter 
+url: https://infusionsystems.com/pishield/
+github: https://github.com/icubex
+buy: http://infusionsystems.com/pishield/?page_id=8
+image: 'icubex-pishield.png'
+pincount: 26 
+eeprom: no
+power:
+  '1':
+  '2':
+ground:
+  '6':
+  '9':
+  '20':
+pin:
+  '3':
+    mode: i2c
+  '5':
+    mode: i2c
+  '19':
+    mode: spi
+  '21':
+    mode: spi
+  '23':
+    mode: spi
+  '24':
+    mode: spi
+install:
+  'devices':
+    - 'spi'
+
+-->
+#I-CubeX PiShield
+
+The I-CubeX PiShield is a 5V sensor interface board that supports 8 channels of 10 bit ADC input via SPI as well as 5V I2C devices. Level conversion to/from 5V is provided for both analog as well as digital sensors.
+
+Features:
+
+- Designed for [I-CubeX Sensors](http://infusionsystems.com/catalog/index.php/cPath/24), but works with any 5V analog sensor via a standard 3-pin header (VCC, SIG, GND)
+- ADC performed using MCP3008 chip, and works with existing libraries and applications (including wiringPi)
+- Supports up to 8 analog sensors via 3-pin headers, and 4 digital sensors via 2x3-pin headers. For pinout and board schematics, click [here](https://infusionsystems.com/pishield/?page_id=137)
+- Enough header protrusion to allow another 26 pin header to be stacked on top

src/en/settings.yaml

@@ -112,3 +112,4 @@ overlays:
 - mote-phat
 - 4tronix-robohat
 - 4tronix-pistop
+- icubex-pishield