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1 Applied Control Systems Technolog y
| Date post: | 11-Jan-2016 |
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Applied Control Systems
Technology
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Pin configuration
Applied Control Systems
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Connection of variable resistor / potentiometer
Analogue pin connections
Input 0 – Pin 17
Input 1 – Pin 18
Input 2 – Pin 1
Applied Control Systems
4
5
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 =
Applied Control Systems
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Connection of Light Dependant Resistor
Applied Control Systems
7
Applied Control Systems
8
Applied Control Systems
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Applied Control Systems
Voltage Regulator
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Applied Control Systems
Voltage Regulator with Diode
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Applied Control Systems
5V to pin 14
0V to pin 5
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Applied Control Systems
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Applied Control Systems
14
Measure the input voltage.
15
Measure the output voltage from the 7805
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Applied Control Systems
Adding Capacitors
17
Applied Control Systems
Reset Switch
18
Applied Control Systems
Reset Switch
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Applied Control Systems
Reset Switch – pin 4
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What happens when the reset is pressed and released?
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Applied Control Systems
Resonator
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Generic components
1. Power supply
2. Download cable
3. Reset connection
4. Available Inputs
5. Available Outputs
Applied Control Systems
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Generic components
1. Power supply
2. Download cable
3. Reset connection
4. Available Inputs
5. Available Outputs
Applied Control Systems
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Applied Control Systems
Using Outputs
25
Applied Control Systems
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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Applied Control Systems
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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Applied Control Systems
Inputs Outputs
(a)
(b)
Use circuit No. 8 to help complete the diagram
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Applied Control Systems
Green
YellowwRed
Green
Yellow
Red
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Applied Control Systems
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Applied Control Systems
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Applied Control Systems
Inputs Outputs
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Applied Control Systems
Inputs Outputs
Identify your input and output needs
