Holograms At Home Log

1/29/17

• created first draft of the project proposal.
• explored alternate project possibilities, including displaying just on a cylindrical surface, removing inner led display volume, and making the display scalable.
• considered which components to use, settled on the stepper motor.
• considered using individual LEDs or strip LEDs, and settled on individual LEDs to ensure LED can be individually controlled and visible from multiple angles.

2/7/17

• switched LED to addressable LED strip due to limited number of ports on the arduino
• tentatively decided on about 10 layers of LED
• designed pole, arudino and battery layer, and first LED layer
• 3d printed designed layers
• modified project proposal
• redesigned pole to be hollow so wires can be held inside the pole
• redesigned layers with tolerance on connecting parts

2/14/17

• ran test on the strip LED with Arduino mega, confirmed that each light can be controlled individually
• determined that motor controller and separate arduino was required for motor, and added components to the budget
• arduino battery layer failed to take into account the size of the ports on the arduino mega; fixed design and reprinted
• 2nd LED layers printed

2/21/17

• finalized budget: switch from AA to D batteries, switched to buying 3 led strips, removed wires and electrical tape from budget
• tested motor, torque and rpm too low. Possible cause is 9v is too low.

2/28/17

• got motor speed to around 10 Hz with 24v 2amp power source
• wired led strips, mounted to frame, and powered Arduino Mega with 9v battery
• programmed Arduino Mega to display semicircle on first layer at around 6Hz
• printed base for the motor
• added hall effect sensor and magnets to budget