Arduino: Recommended Parts

hobby servo
T-Pro Mini Servo SG-90 9G Servo

http://www.hobbypartz.com/topromisesg9.html

relay
jameco

darlington array for stepper motor control
uln2003
jameco

stepper motor

  1. Generic
    1. Breadboard
      1. Solderless + appropriate wire jumpers
      2. wood, nails, alligator clip jumpers
  2. Basic Input and Output
    1. Digital Output: LED and resistor,  300 Ohms – 1K Ohm
    2. Digital Input: Resistor pullup (10K Ohm), wire switch
    3. Analog Input: Photoresistor, 100K Ohm – 400K Ohm  resistor
    4. Analog Output: LED and resistor,  300 Ohms – 1K Ohm
  3. Using a transistor to control loads
    1. Transistor, LED, 5VDC: 2n7000, LED, resistor
    2. Transistor, LED, different power: 2n7000, LED, resistor, 9V battery or other power supply
    3. Transistor, motor: 2N7000,  motor e.g. Jameco 2081895, 9-15V, 47mA no load, 500mA normal, 9V battery or other power supply
    4. Transistor, RFP12N10L, bigger motor : 2N7000,  motor up to 12A, 9V battery or other power supply

Switch and pull up/pull down resistors
potentiometer? seems an important concept
Relay! what’s cheap? and what’s a good demonstration? reed relay to hack remote controlled outlet?
any other inexpensive sensors?

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