A Technology Design STEM Resource The following STEM

A Technology & Design STEM Resource The following STEM funded project was developed by Sean O’Connor. This is an excellent example of a design opportunity that is very topical and will no doubt appeal to many young Technology students. The project has been selected for the following reasons: - • the design element is achievable by most pupils; • the project is topical and appropriate for the development of research / thinking skills; • it is ideal for modelling in card, paper, etc; • this project could be easily simplified for the low achiever and yet will stretch and challenge the more capable students; • an excellent example for modelling in 2 D or 3 D CAD / Solid Works; • it could be manufactured in a relatively short period of time; • it promotes further development using electronic systems; • I believe many students will receive great pleasure in taking this exciting project home. I have no doubt that many students will develop their Technology and Design skills in engaging in this very worthwhile task. May I take this opportunity to thank Sean for this excellent resource. Raymond Moffatt WELB.

Portable speaker with sound responsive LED’s Developed by Sean O’Connor

Research Your Brief: To design and manufacture a portable speaker with sound responsive LED’s. This product is to be designed as a accessory for your MP 3, ipod, phone, Portable radio etc. Design Manufacture 23.

Circuit Theory How a transistor works!

Circuit Theory Turning sound to light using a transistor 3 V Task: Now label the components used in the circuit above The LED’s illuminates when the circuit detects a high amplitude waveform. It can be connected to a Walkman, ipod, Phone, mini radio with earphones. This waveform is amplified by a transistor which acts as an electronic switch turning on and off the LED’s to the sound/loudness of the music Task: Now draw the circuit diagram for the circuit to the left. Draw this circuit diagram using the components above.

Circuit Theory How it works! Using the right and left outputs from an earphone jack two circuits can be generated. Beat box circuit diagram Beat box Printed Circuit Board A BC 109’s LED’s 2. 2 K R Rocker switch 1 M R 1 K R 100 n Capacitor 0. 4 w Speaker B BC 109 2 x 1. 5 V Batteries BC 109 3. 5 mm Audio Jack Part A: MUSIC TO Light. The LED’s illuminates when the circuit detects a high amplitude waveform. It can be connected to a Walkman, ipod, Phone, mini radio with earphones. This waveform is amplified by a transistor which acts as an electronic switch turning on and off the LED’s to the sound/loudness of the music. Part B: SOUND. The second channel can be connected to produce sound through a small speaker.

Research As a designer research is key to developing a successful outcome, sourcing inspiration in the form of colours, features, form, materials, e. t. c from existing and similar products. Task: Now cut and paste images onto this page and create a mood board

Design Insert research image Now use your research image as an influence to style your product: Component layout ants Front of casing

Design Insert research image Now use your research image as an influence to style your product: Front of casing Component layout ants

Circuit Manufacture Casing Manufacture