FlashlightRepos

Final video submission URL: https://youtu.be/8UVXDF8A7WE
*note: I did not indicate on Sakai but I submitted course evaluations in class.

How To

This design is protable lightbox and pulse sensor. To turn the device on, toggle the switch ON. An initiation screen will appear and in a few seconds, the red LED will turn on. To cycle through various modes, simply push down on the pushbutton. On every fourth push of the cycle, the LCD will display the pulse readings. You can attach or detach the pulse sensor at any moment by attaching or removing the earclip to your earlobes.
To replace the battery, simply open the box and unscrew the 1/8" bolts and expose the battery underneath. The battery cap is easily removable, and the battery replaceable.

Features of the Device

Software

• Debounce, interrupt on pushbutton
• Max BPM resets if max BPM remains over 215 bpm for greater than 20 seconds

Hardware

• Green 3mm LED on PCB to indicate connection to power source and battery life (with diminishing brightness)
• 5.5 x 4.0 (cm) double-sided PCB with ground plane

Mechanical

• Easy mount, easy install
• Tight latch and hinge design
• (-) LED without lightpipe

Extra

• Pulse sensor: measures pulse at 9600 bauds rate. Can be attached to earlobe or finger.
• LED display: "Haeryn's Light Box: Thank You Matt Brown!" logo and continous display of current BPM and max BPM
• Indicates maximum BPM measured since device turned ON.

Extra specifications