6) Dillon and Dwight - Actuation Description

I feel that the previous blog post fits the requirements for this post, so instead I will describe the actual electronic parts we ordered for the final build and why we needed to buy them.

IR sensors - Ir Phototransistor/ IR detector, NPN 940nm

collector voltage 30 V DC

emitter-collector voltage 5 V DC

collector current 20 mA

spectral bandwidth 840nm - 1100nm

These were the basic IR sensors that our local electronic store provided for us. We used them in the final version of the lamp as well as all the prototyping. Cost about $3 for 10 of them.

Arduino Uno 

The brains of the operation. Supplied to us by our gracious instructor :)

Qunqi MG996R Metal Gears Digital RC Servo Motor

two vary powerful servo motors. Operate at a range of 4 - 7 Volts and each require a stalling amperage of 2.5. For these we needed to purchase a 5 V 10 Amp power source last minute because the previous one we bought was burned out 3 days before the project was due. Skip our mistake and buy the proper power source in the first place. Ordered off of Amazon.

12 V 30 Watt LED Halogen Tracklight Light Bulb

The bulb that supplied the light. We also needed to buy a socket for the bulb to plug into and a separate 12 V power supply because the Arduino cannot supply that much power.

SainSmart 4-Channel Relay Module

A relay that plugs directly into our Arduino that allows the it to turn on and off separate power sources. We plugged both the Light Bulb power source and the Servo Motor Power source into this to keep all of the electronics on the same circuit (VERY IMPORTANT: you must keep all of your power sources on a linked ground. If you do not this will cause digital noise and your devices will not operate correctly. For us our servos were acting up and by grounding them both through the power source ground and the Arduino ground we were able to solve this issue) Ordered through Amazon.

Ultrafire Wf-501b Cree Infrared Ir 3w LED Night Vision Flashlight Torch

The IR emitter that we used as our "greatest source of IR light in the room". Also required us to buy a special battery, does not run off any conventional batteries that you can buy at a store.

Finally here is a sketch of how everything is hooked up with all the wires and shit. Enjoy and good luck!