1. Systems and Control - Electronics The Moisture Detector Tutor Group Name Date

2. Page 1 Identifying a Need Moisture Detector Name Class Date

3. Page 2 Design Brief & Specification Design Brief I am going to design and make a moisture detector to place in a plant pot to indicate whether the soil needs watering or not. An LED will light up if the soil is moist. I will add an acrylic design to place at the top to make it more noticeable and attractive. Specification. My product must: 1Light up when the soil is moist. 2Have neat soldering. 3Be assembled very neatly. 4Have an acrylic design that is related to gardening or the seasons. 5Have an acrylic image that is easily recognised Moisture Detector Name Class Date

4. Page 3 Electronic Circuit Moisture Detector Name Class Date

5. Page 4 My Electronic Circuit Moisture Detector Name Class Date

6. Page 5 Real-life & Track Diagrams No.ItemValue/TypeFactsheet 1Battery snap PCBs 1LED LEDs 1Resistor 1470RResistors 1Resistor 21K2Resistors 1Resistor 31KResistors 1TransistorBFY51Transistors Moisture Detector Name Class Date

7. Page 6 Flow Chart of Etching Process Moisture Detector Name Class Date

8. Page 7 Acrylic Backing Designs Moisture Detector Name Class Date

9. Page 8 Vacuum Forming the Product Moisture Detector Name Class Date

10. Page 9 Flow Chart of Soldering Process Moisture Detector Name Class Date

11. Page 10 Evaluation PHOTOGRAPH OF FINISHED PRODUCT Moisture Detector Name Class Date

12. Page 11 Special Vocabulary Acrylic Battery snap Brainstorm CAD CAM Circuit diagram CNC Copper track Design Brief Etching Ferric chloride Helping hands High density polystyrene Laser cutter Light emitting diode (LED) Long-nosed pliers Mask Mini drill Needs Photo-sensitive Printed Circuit Board (PCB) Resistor Resistor colour code Roland vinyl cutter Side snips Sodium hydroxide Solder wire Soldering Soldering iron Specification Thermoplastic Transistor Ultra violet light box Universal systems diagram User Vacuum former Moisture Detector Name Class Date