555 Timer Project

Making a timer using a 555 IC circuit configured as a monostable circuit.
  1. You are going to finish the preparations of the PCB, ready for soldering. Use the wire wool, and drill the holes.
  2. You are going to collect and prepare the components.
  3. Some components will be placed straight onto the PCB and others will first have flying leads attached.
  4. Insulation needs to be added to components such as LED's after they have been soldered.
  5. Flying leads need to be twisted to make them stronger and tidy (good practice).
  6. Once soldered the 555 chip is inserted into the holder.

You are going to design the casing for the timer - which will HDP and Acrylic
For this part of the project you are going to learn about materials, manufacturing techniques and how to draw your casing ready for manufacture, and you are going to create a Google Docs presentation about what you have learnt and created.

Drawing Techniques

To start with you are going to choose an existing mold which will be the casing for your timer.
  1. You are going to draw accurate, and detailed orthographic views of the casing, including dimensions.
  2. You are going to draw accurate and detailed isometric drawing of your casing, and add some colour.
  3. You are going to use Google Sketchup to create orthographic and isometric views of your casing.
  4. Your are gong to research materials and material groupings: types and classifications of wood and plastic, MDF, Wood, Acrylic, HDP,
  5. You are going to record (Schedule) how you made your casing - methods of manufacture,
  6. Health and Safety

Materials & Software

You will learn how to use the following software:
  1. Google Sketchup
  2. Techsoft 2D Design
  3. Focus on Plastics & Resistant Materials

Manufacturing

You will learn how to use the following equipment
  1. The vacuum former
  2. The laser cutter
  3. Roland Cutter/Stiker

Links for 555 timer Casing


Orthographic Drawing

http://www.animatedworksheets.co.uk/webgate.html
http://www.technologystudent.com/designpro/ortho1.htm
http://www.technologystudent.com/despro_flsh/clock1.html
http://www.slideshare.net/robjwise/multiview-sketching
http://www.slideshare.net/docsclass/line-conventions-presentation
http://www.teachertube.com/view_video.php?viewkey=72a8401889ac64749e12

Dimension Practice

http://www.slideshare.net/robjwise/dimension-practices

Isometric Drawing

http://www.animatedworksheets.co.uk/webgate.html
http://www.technologystudent.com/despro_flsh/isomty2.html
http://www.slideshare.net/robjwise/isometric-pictorials-136365

Oblique Projection

http://www.slideshare.net/robjwise/oblique-pictorials-156130

Plastics

http://www.technologystudent.com/joints/joindex.htm

Wood

http://en.wikipedia.org/wiki/Wood


Vacuum forming

http://www.technologystudent.com/equip1/vacform1.htm

Laser cutting

http://www.technologystudent.com/laser1/laser8.html

Roland Cutter / Stika

http://www.technologystudent.com/despro2/devman1.htm

Techsoft 2D Design

http://www.siastraining.co.uk/TVEAZcadcam%20site/oldtveaz%20cadcam%20resources.htm
http://www.youtube.com/watch?v=3-4L4j6xQtU

Google Sketchup

https://msc-ks4technology.wikispaces.com/Google+SketchUp+Introduction

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555 Timer Project | Drawing Techniques | Materials & Software | Manufacturing | Links for 555 timer Casing