Placebo project discussion

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Placebo project discussion
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Binary Sensorsi.e. switches

• push button
• toggle
• key switch
• mercury tilt
• PIR motion

• magnetic
• thermal
• humidity
• air pressure

Context is important
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Resistive Sensors

• Light level - photocell
• Position - flex sensors
• Tactile Pressure conductive foam
• Temperature - thermistor

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Advanced Sensors

• accelerometers
• distance - ultrasonic, IR
• capacitive proximity
• microphones
• GPS

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BASIC programming notes

• RUN copies program to board
• program can then run without PC
• program restarts whenever power is applied or
  reset button is pressed

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BASIC Programming

• comments
• Variables declaration, types
• debug  
• High, low
• Pause
• Do loop
• For next step

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BASIC Programming

• Nested loops
• If then else
• Gosub
• Inputs
• Binary (switches)
• Pull up versus Pull down
• Resistive inputs

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Circuits for Binary Input
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Circuit for Resistive Input