Technology Education Centre WELB

1. Technology & Design GCSE Coursework An Electronic Food Timer RA Moffatt WELB Technology Education Centre WELB

2. An Electronic Egg Timer • Situation: • A number of cooking operations are dependant upon • some type of timing device to ensure that the food is • prepared to the required standard. • Design Brief: • Design a contemporary ‘Egg Timer’ appropriate for a • domestic environment; • Identification & Analysis: • An electronic system is required incorporating a timing device • Some type of interesting product/casing design to house the electronics system and battery? • An output device – light / audible tone?

3. An Electronic Egg Timer • Recognition of Constraints: • My design, communicating and manufacturing • capability, knowledge and skills; • The type of manufacturing processes available; • Materials accessible; • Tools, machines and equipment; • Function and ease of use • Hygiene – ease of cleaning • Location of PCB and battery

4. An Electronic Egg Timer • Investigation & Research: • Design inspiration!! Where do I start? • Observe and analysis existing timers – mechanical, electrical - reverse engineering; • Research for ideas – internet, magazines, books etc • Reference to existing ideas or stimuli should demonstrate how these materials have influenced your thinking around the problem or stimulated the thought process / ideas? • Designing using Mood Boards & reference materials

5. An Electronic Egg Timer • Design Opportunities: Designing for Manufacturing • How will the parts fit together? • How will the PCB be mounted? • How will the battery be mounted securely and accessed? • How will the potentiometer be located? • How will the base be fitted? • How will the time be registered? • What type of output device will be required and where will it be located? • How can we include detail into the design to enhance the aesthetics?

6. An Electronic Egg Timer Design a former from any one of the given block shapes that is appropriate for the vacuum forming process. The form should be suitable as a casing design for an Egg Timer. Designing for Manufacture:

7. An Electronic Egg Timer Suggested Idea 1 Suggested Idea 1

8. An Electronic Egg Timer Former turned on the Wood Lathe Vacuum formed using rigid polystyrene sheet Suggested Idea 2

9. An Electronic Egg Timer Internal egg rack Show sketches of your ideas for a base?

10. An Electronic Egg Timer

11. An Electronic Egg Timer A semi-sphere may be used as a basic geometrical shape for vacuum forming. This casing will house the electronic PCB and battery. Design an interesting feature that could be located to the base to show the different time delays.

12. An Electronic Egg Timer Using graphics or model using CAD, to sketch different ideas for a feature which would add to the aesthetics - of this basic design; Pictorial view Front view Suggested Idea 3

13. An Electronic Egg Timer Contemporary kitchen timers How will the PCB & Battery be mounted?

14. An Electronic Egg Timer A Inspiration! B • How will part (A) fit-into part (B)? • How & where will the potentiometer be fitted?

15. B A An Electronic Egg Timer Suggested Idea 4

16. An Electronic Egg Timer potentiometer Fitting the potentiometer? base

17. An Electronic Egg Timer Suggested Idea 4 developed

18. An Electronic Egg Timer Suggested Idea 5

19. An Electronic Egg Timer Suggested Idea 6

20. An Electronic Egg Timer Suggested Idea 6 fabricated in acrylic plastic

21. An Electronic Egg Timer Suggested Idea 6 fabricated in wood

22. An Electronic Egg Timer Suggested Idea 7 fabricated

23. An Electronic Egg Timer Acrylic sheet heated in the oven and press-moulded Male and female former Outcome after trimming Press Moulding

24. An Electronic Egg Timer Finished & assembled

25. An Electronic Egg Timer Suggested Idea 8 fabricated

26. An Electronic Egg Timer

27. An Electronic Egg Timer PCB, printed circuit board How will the pcb be mounted?

28. An Electronic Egg Timer A GCSE student’s design outcome!