Holoseat

h1. Schematics and PCB Files

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h2. Introduction

Holoseat uses two boards:  the Controller (an "Adafruit Feather 32u4 Basic Proto":https://www.adafruit.com/product/2771 running the Holoseat firmware) and the Sensor Board (a custom board to connect the sensors to a Cat5 jack so the sensors can be mounted on the exercise pedals and the Controller can be close to the user (typically next to the user's keyboard).  For the current version, the boards are built from proto-boards, so there are no Holoseat specific PCBs.  Later versions will migrate to Holoseat specific PCBs.  

h2. Holoseat Controller

!http://opendesignengine.net/dmsf_files/637?download=!

The Holoseat Controller electronics are simple enough to fit onto the prototyping area of the "Adafruit Feather 32u4 Basic Proto":https://www.adafruit.com/product/2771.  The key components are the Cat5 jack and an LED push button ("HS008":https://www.adafruit.com/products/1440).  The Cat5 jack is connected to pins 2 and 3 (for reading interrupts from the two Hall effect sensors), ground, and the USB power (to provide 5v to the sensors).  The LED push button is treated as a separate button and LED.  The button portion is connected to pin 10 and uses the Feather's internal pull-up resistor.  Finally, the LED portion is connected to pin 13 (per the "Arduino Blink tutorial":https://www.arduino.cc/en/tutorial/blink).

h2. Sensor Board

!http://opendesignengine.net/dmsf_files/638?download=!

Design work is currently being done in "Fritzing":http://fritzing.org/. | "Fritzing Source Files":https://opendesignengine.net/dmsf/holoseat?folder_id=74