HeartBeat circuit diagram

THE CHALLENGE: Rock-IT Space Fashion and Design

Space Station

Out-of-this-world fashion with function: clothing or accessories for earth or space wear!

Every space traveler – even the robotic ones – should feel? their very best during the journey, infused with the very best data and technology available. Earthlings can follow suit. Design a space data-tech-fashion wearable in the form of clothing or accessories that will collect or distribute data and technology in the following categories:

Design for Interconnectivity (staying more connected to team, community, and tools)

enhance the work/life experience of humans and/or capabilities of robots

Design for Health (biometrics, physical and emotional health, and/or environmental alerts)

maintain or improve the health and well-being of the human
provide early warning for unhealthy environmental factors (air quality, radiation, outgassing, temperature)

Design for Entertainment (sights, sounds, music, activity)

enhance the human experience whether during work or play

Explanation

This submini USB scope is based on a Atmel Tiny45 cpu and cost less than 55 LE with a homemade pcb

It has 2 analog inputs and can supply 5V on the 4 pins header on the right. One of the inputs can be scaled down with the trim pot.

The firmware in the Tiny45 is written in C and compiled with Winavr and usb source code from obdev. As you can see, there is no crystal , the software sync the internal 16.5Mhz pll clock with the USB clock.

The cost with a home made pcb is around 55 LE.

Of course, do not expect 1Gs/s HID does not alow that data rate ! But it is using a 10bits AD.

It has been designed to plug into a project breadboard so there is no need for a power supply.

On this board it is used to test a high precision light sensor.

Bill of material

1 Led (any)

1 R for led, from 220 to 470 ohm, smaller is brighter

2 R 68 ohm on USB D+ & D-lines

1 Pull up R 1.5K for USB device detection

2 Zener 3.6V for right USB signal levels

2 Bypass caps 100nf & 47uf

2 filter caps on analog inputs ( from 10nf to 470nf or nothing, up to you)

1 or 2 trimpots on analog inputs to scale your voltage to AD range (1.2V or 2.5V by software )

1 USB socket (A,B, mini, you chose)

1 Atmel Tiny45-20.

Resources Used

Books :
avr simply
The C language programming
MORENO-MASTERS-REPORT
http://www.nasa.gov/mission_pages/oco2/index.html