Touch and Feel

• DEVICES: Mechanical switches
  • SPST, SPDT, DPDT terminology (w/demo)
  • Switch bounce
  • Hardware de-bouncing - pull-up resistors, capacitors
  • Software de-bouncing
  • Potentiometer - pencil/graphite resistor, multimeter, analog input
• THEORY: Digital vs. Analog input
• MISC: Survey of other mechanical inputs/uses (e.g. magnetic reed switch, limit switches)
• HANDS-ON: read a switch with a digital input and an analog value from the potentiometer with an analog input.

Experiments

• ​Push Buttons