Transcript PIC presentation

Light Controller
PICAXE
PIC-Logicator 2005
Light Controller
PCB Wizard
Actual Circuit
Space for LDR and
resistor if needed
Artwork Silkscreen
Solder Side
Component List.
1. Battery + Holder.
Component symbol Component Drawing
Where to put the components. N.B. All components go in from the reverse side.
8.
7.
4.
4.
6.
2. PIC Chip
3.
4.
5.
3. Capacitor
1.
4.
4.
7.
4. LED (light emitting diode).
2.
4.
4.
5. Resistor 22K (red red orange).
Solder Side
6. Resistor 10k (brown bl ack orange).
7. Switch spdt
(sin gle pole do uble throw)
8. Jack Plug Socket.
9. PCB (printed circuit board)
4 wire bridges will also
be needed to complete
circuit
NB 4 wire Bridges are also needed
to make the circuit work
Component Side
Components in Red (LDR and 220Ώ Resistor
are not necessary to programme the light
circuit. They have been included as an option
to push more able pupils.
A spaces have been left for them on
the circuit board
Programming
When programming remember that Outputs 0, 1 and 4 work in pairs
while Output 2 has a single LED attached
Pic Project Components Order
Product
No.
1a
Battery Holder
Order code
Order
Total
Quantity
18-0498
100
25.00
1
18-0490
100
37.00
1
PICAXE08
10
10.00
1
1b
Battery 3v Lithium coin cell
2
Pic Chip
3
Capacitor 100nF
10-0230
100
6.00
1
4a
Red LED per 100
55-1796
1pkt
3.50
2
4b
Orange LED
55-0124
100
6.00
2
4c
Green LED per 100
55-1792
1pkt
3.80
2
4d
Yellow LED per 100
55-1794
1pkt
3.80
1
62-0588
1pkt
1.00
1
5
22k Resistor per 100
6
10k Resistor per 100
62-0580
1pkt
1.00
1
7
Miniature PCB Switch (spdt)
76-0270
100
15.00
2
8
Download Socket
20-0137
120
9.00
1
34-0176
1
11.80
60x50mm
9
10
11
PCB 305mm x 475mm
Foamex
Self-Tapping Screws
A4
305 X 230mm
100
2
Sub-Total
Unit Price
£
Standard Charge For Solder, Developer, Etchant,Electricity,ect.
0.06
Total
£
Step 1. Cost of large sheet of PCB?
11.80 (Answer 1)
£______
Step 2. Area of large sheet of PCB?
305 x 475
145,825
Length (mm) x Breadth (mms) = _______sq mm (Answer 2)
Step 3. Area of my PCB?
60
x 50
3,000
Length (mm) x Breadth (mm) = _______sq
mm (Answer 3)
Step 4. Number of sheets of my PCB that can be cut from large
sheet?
145,825
3,000
48
Answer 2 divided by Answer 3 = __________
(Answer 4)
(Full sheets)
Step 5. Cost of my PCB?
11.80
48
0.25
Answer 1 divided by Answer 4 = £_________
(Answer 5)
Now add your answer to your costing and finish working out the
total price.
(Round
answer up)
Planning for making. Example and key words
Step
No.
1.
2.
3.
Description of
work
Resources (tools and materials) Time
Create PCB.
UV. Light box, Developer, Acid (Ferric
Chloride)
PCB Eraser
Clean PCB
15min
1min
Key Words.
PCB drill. Safety specs. Soldering station. Wire strippers.
Long nose pliers. End snips. Solder. Soldering board.
Electrical components. Battery holder. Switch. PCB. Capacitor.
Light
emitting diode. Resistor. Ventilation. Download socket Safety. PIC Chip.
Resistor. CAD/CAM. CNC Machine. Foamed PVC. Lid/Base. Drill. Dr
Stikka. Packaging. Quality. Silicone carbide paper.
Case Ideas
Orthographic Drawing
Assembly
1. Thread the centre sections and
backs onto a 3mm plastic tube using
the pilot holes as guides.
2. Glue the sections together
using liquid solvent cement.
Capillary action will suck the glue
in along the joints.
4. Smooth the edges of the material using
silicone carbide paper working your way up the
grit size until a smooth edge finish is achieved.
Make sure you do not wrap the paper around the
sides since this will scratch the surface and spoil
the finish of your material.
3. Using a junior hacksaw cut
off any excess pipe and you
may want to drill holes to gain
access to the on/off switch.
5. Smooth the edge of the front
cover using silicone carbide paper
and polish to a bright finish.
6. Apply 2 Stainless steel panhead
Self-Tapping Screws to attach the
cover to the case.
EVALUATION
Use the following points to help you with your evaluation.
* Explain the good and bad points of mass production.
* In what way does your finished work answer the points of the
design specification?
* Use notes and diagrams to explain how you could improve your
work.
* What do others think of your finished work, including your folder?
* What is the most important thing that you have learned?
* What are the things that gave you most and least satisfaction in
doing.
* What problems did you have during making your product and how
did you overcome them?
* Did you manage your time effectively or not and in what way did
you do this?