Although we are influenced by the light environment we experience everyday, we rarely take a close look at the nuances in those lighting moments.
Shadow through time is a 24-hour light fixture which highlights the change in shadow compositions through time.
The square shaped fixture contains four moving elastic bands lined up horizontally and four light sources in four corners. The light sources are mapped according to the direction of sunlight throughout the day. The elastic bands act as as a clock rotating 180 degrees in 12 hours and back.
Inside the piece:
Process (after prototyping):
- Cut acrylic according to designed shapes
- Wire the motors
- Solder and wire the lights
- Place strings on motors
- Put everything together
- Close the top with white acrylic sheet
Parts:
- Motors and strings
- Arduino Mega
- 28BYJ-48 5V stepper motors (https://www.amazon.com/gp/product/B01CP18J4A/ref=ppx_yo_dt_b_asin_title_o05_s00?ie=UTF8&psc=1)
- Motor Drivers L293DNE Texas Instruments
- 5V 10A AC to DC Power Supply Adaptor
- Matte clear acrylic (p95)
- Matte clear wire holders (Canal Lighting)
- square rubber elastic band (Canal Rubber)
- Lights
- Arduino MKR1010
- 3 Watt High Power LED Warm White (https://tinkersphere.com/standard-leds/1375-3-watt-high-power-led-with-heat-sink.html#/color_select-warm_white)
- TIP 120 transistors
- Small heat sinks (https://www.amazon.com/gp/product/B07217N5LS/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&psc=1)
- 5V 2A AC to DC Power Supply Adaptor
- Stainless steel sheet
- Main panel
- Matte black acrylic (p95)
- Matte white acrylic (p95)
- Others
- Breadboards and solid wires
- Hex nuts and bolts
- Matte clear cable ties
Schematic references:
- Using a Transistor to Control High Current Loads with an Arduino – https://itp.nyu.edu/physcomp/labs/motors-and-transistors/using-a-transistor-to-control-high-current-loads-with-an-arduino/
- Controlling a Stepper Motor With an H-Bridge – https://itp.nyu.edu/physcomp/labs/motors-and-transistors/lab-controlling-a-stepper-motor-with-an-h-bridge/
Code and illustrator files:
https://github.com/hellonun/shadowthroughtime
(code to be updated with RTC and sunrise/sunset API)