Chapter 2, Setting Up Your Robot

1. Sensors mentioned in the text include:
   • Sonar sensors
   • Cameras
   • Microphones
   • Buttons
   • Analog-to-digital voltage sensors
   • Temperature via thermistors
2. PWM stands for Pulse Width Modulation, a type of digital-to-analog control scheme where pulses are sent out that get longer based on the amount of control desired. It is commonly used to control DC motors.
3. As the name says, analog to digital conversion (A2D) takes in an analog value, typically a voltage, and converts it into a digital value or number that the digital part of the computer can understand.
4. As stated in the text, the subsumption architecture was originally described by Dr. Rodney Brooks, a professor at MIT who would later help found iRobot Corporation and invent the Baxter Robot. Rodney was trying to develop analogues of insect brains in order to understand how to program intelligent robots...