Teensy/Arduino to Photo-resistor, 12V Solenoid, 12V RGB LED, 3.3V Solenoid, Servo, 12V Light Bulb

_to-export,Assignment,Microcontroller — Ali Momeni @ 9:39 pm

Here’s some help on the assignment due on Monday. The entire set uses three different integrated circuit (IC) components (see image 3 below)

  • IRF540: A MOSFET/Power Transistor; used to turn DC actuators on and off
  • L7805: +5V Voltage Regulator, used step-down the power-supply (>5V) to 5V for a servo
  • LD33V: +3.3V Voltage Regulator, used to setp-down the power-supply voltage (>5V) to 3.3V for a small solenoid
NOTE: while both the L7805 and the LD33V are “voltage regulators”, their pin-ordering is different; look at the datasheet!

Image 1 below shows a breadboard circuit for connecting the Teensy microcontroller to (letters refer to image 2 below)

  • A: 1 x 3.3V solenoid (needs 1 x LD33V 3.3V Voltage Regulator and 1 x IRF540 MOSFET)
  • B: 1 x Servo (needs 1 x L7805CV +5V Voltage Regulator)
  • C: 1 x 12V solenoid (needs 1 x IRF 540 MOSFET) [image 6]
  • D: 1 x 12V incandescent light bulb (needs  1 x IRF 540 MOSFETS) [image 6]
  • E: 1 x 12V RGB LED strip (needs 3 x IRF 540 MOSFETS) [image 7]
  • F: 3 x photoresistors (needs photoresistor and resistor) [image 8]
NOTE: The two vertical strips of the breadboard are used to distribute GROUND (common for Teensy and Power Supply), and the two different supply voltages (one from Teensy, one from Power supply); please see image 4 below.

DUE Mon Mar 28, 2012

Please prepare a system using Max, a Teensy microcontroller, and the necessary components that performs the following:

  • A photocell controlling the position of a servo that rotates a small figure (e.g. a toy figure or animal, a fruit, a plant, a hairball, a sea urchin, etc)
  • Another photocell controlling the brightness of an incandescent light-bulb that create an animated shadow; for this you must find a way to arrange and fix in space: the light bulb, the object casting a shadow, and the screen onto which the shadow is cast
  • Another photocell controlling the speed at which a solenoid hits against some doohickey that makes sound, i.e.  your musical score. For this you must find a way to fix a solenoid in the upright position, so that after it strikes the doohickey bounces back down to its relaxed position

Additional credit give for:

  • Using any sensor besides a photocell
  • Creating a meaningful interaction among the three actors: the figure, the light, the sound
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