Post on 11-Jan-2016
transcript
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Applied Control Systems
Technology
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Pin configuration
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Connection of variable resistor / potentiometer
Analogue pin connections
Input 0 – Pin 17
Input 1 – Pin 18
Input 2 – Pin 1
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Analogue to Digital conversion
PICAXE 18X: -
Internal 8 bit analogue to digital converter (28 = 256)
Possible Voltage input range:- 0v – 5v
Possible conversion :- 0 – 255
Examples: - 0v = 0, 5v = 255, 3v = 153
Conversion formula: -
Input voltage *255
Supply voltageConversion =
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Connection of Light Dependant Resistor
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7
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8
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Voltage Regulator
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Voltage Regulator with Diode
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5V to pin 14
0V to pin 5
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14
Measure the input voltage.
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Measure the output voltage from the 7805
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Adding Capacitors
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Reset Switch
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Reset Switch
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Reset Switch – pin 4
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What happens when the reset is pressed and released?
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Resonator
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Generic components
1. Power supply
2. Download cable
3. Reset connection
4. Available Inputs
5. Available Outputs
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Generic components
1. Power supply
2. Download cable
3. Reset connection
4. Available Inputs
5. Available Outputs
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Using Outputs
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Transistor driver output
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What happens when input 7 is pressed and released?
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Set output 7 high for 2sec- low for 2sec – loop continually
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PICAXE 18X Project Board (5 inputs, 8 outputs)
Inputs
4 Terminal blocks
1 Digital thermometer
Outputs
6 LED outputs
Two transistor driven terminal blocks
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Inputs Outputs
(a)
(b)
Use circuit No. 8 to help complete the diagram
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Green
YellowwRed
Green
Yellow
Red
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Inputs Outputs
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Inputs Outputs
Identify your input and output needs