Designing Your Clock
Constraints Maximum of 10”x10” (front, back) Must have openings to view the gears Must have at least 3 personalized elements Must have a seconds hand Driving gear must have 30T Must be themed Pendulum length must be 6.79” Must be gravity driven Must be pendulum regulated/controlled Must keep time for at least 30s Accuracy must be at least to within ± 2s
Use these constraints to find Gear Ratio Must have a seconds hand Driving gear must have 30T Pendulum length must be 6.79” Remember: 𝑃=2𝜋 𝐿 𝑔 𝑊 𝑜𝑢𝑡 = 𝑊 𝑖𝑛 𝐺𝑅
Raster vs. Vector Raster Images Vector Images Array of pixels of various colors Loses quality when scaled up to larger sizes Good at displaying large numbers of colors Large file size Formats: JPG, BMP, GIF, TIF, etc. Collection of lines/curves with starting and ending points that have color and thickness Scalable without losing quality Poor at displaying large numbers of colors Small file size Formats: SVG, CGM
1. Choose an Image to Engrave Characteristics of a Good Engraving: High contrast High resolution (300 x 300 pixels or better) Should look good in B&W Minimize shaded regions with no information content Everything that has color will be engraved. Engraving takes a lot of time!!! Choose your images to minimize time as best you can… Excellent – Very strong contrast; good resolution; already in B&W; all dark areas carry information Good – Very strong contrast; high resolution; in B&W; large shaded region with minimal information content Poor – Contrast is only between light & dark colors; good resolution; too much informational content 500x518 px 1080x546 px 1200x1011px
Order the images below from best to worst… 2. 3. 1. 4. 5. 6.
Order the images below from best to worst… 4. 6. 3. 1. 5. 2.
Google Image Search Tools: Color
Google Image Search Tools: Type
Designing Your Clock: The Narrative
Tell me a story… Your clock should be more than a work of engineering… It should have a theme; It should tell a story.
Tell me a story…
Tell me a story…
Tell me a story…
Tell me a story…