Light Flicker Detecting Top

thingiverse

Identify energy-hogging light fixtures using this handy tool, which reveals low-frequency flickering with ease! Simply spin the top and observe for a flashing bluish line to determine if a more efficient light fixture could be yours. Why This Works: Fluorescent bulbs flicker at twice their AC frequency because their magnetic ballast is directly affected by peak AC currents. Consequently, 60 Hz AC equals 120 Hz flicker, while newer solid-state fluorescent tube lights flash at a much higher rate. The device's high-contrast colors and slow-spin speed create a frame-rate interference, just like looking at your TV through a digital camera lens. Photos show the bluish lines, indicating slow-flickering light, versus sunlight producing a red-white blur. Some energy-efficient LEDs feature low flicker rates, resulting in false positives. Don't toss those efficient LED's! Instructions: Print the top body with high infill to prevent gaps, which might compromise painting and flicker effect quality. The top handle and tip require support generation; printing them at 30% infill or higher will ensure they withstand use. A functional press fit connects the top and bottom pieces. Super glue may also be used for extra stability. Notice how a pen could produce a similar effect without building this tool. Use high-contrast colors, such as black and white, for best results (red and white work too!). White out painted the top surface.