Merge pull request #157 from BareConductive/master

Added Pi Cap board

draft/overlay/pi-cap.md

@@ -0,0 +1,79 @@
+<!--
+---
+name: Pi Cap
+class: board
+type: touch, capacitive, audio
+formfactor: Custom
+manufacturer: Bare Conductive
+description: Add capacitive touch, distance sensing and high quality audio to the Raspberry Pi
+url: https://www.bareconductive.com/shop/pi-cap/
+buy: https://www.bareconductive.com/shop/pi-cap/
+image: 'pi-cap.png'
+pincount: 40
+eeprom: no
+power:
+  '1':
+ground:
+  '6':
+  '9':
+  '14':
+  '20':
+  '25':
+  '30':
+  '34':
+  '39':
+pin:
+  '3':
+    mode: i2c
+  '5':
+    mode: i2c
+  '7':
+    name: Button
+    mode: input
+    active: low
+  '11'
+    name: IRQ
+    mode: input
+    active: low
+  '29'
+    name: Green LED
+    mode: output
+    active: low
+  '31'
+    name: Red LED
+    mode: output
+    active: low
+  '32'
+    name: PWM0
+    mode: output
+    active: high
+  '33'
+    name: PWM1
+    mode: output
+    active: high
+  '37' 
+    name: Blue LED
+    mode: output
+    active:low
+i2c:
+  '0x5C':
+    name: MPR121
+    device: MPR121
+-->
+# Pi-Cap
+
+The Pi Cap adds precise capacitive touch, distance sensing and high quality audio to any Raspberry Pi with a 40 pin GPIO connector. The 12 electrodes can be connected to anything conductive to create a touch or proximity interface. Additionally the Pi Cap includes a user-programmable RGB LED and a multi-function button.
+
+The Pi Cap software is in the official Raspbian repository, so to install the software simply enter:
+```bash
+sudo apt-get update
+sudo apt-get dist-upgrade
+```
+
+Reboot the Raspberry Pi and enter:
+```bash
+sudo apt-get install picap
+picap-setup
+```
+
+The Pi Cap provides 7 digital I/O pins, brought out from the 40-way Raspberry Pi GPIO connector – pins 12, 13, 15, 16, 18, 22, 36. The Pi Cap package contains plenty of code examples written in C++, Python and Node.js that are supported by the Pi Cap library.