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Project Videos

Helical Wheel robot 1 


Helical Wheel robot 2

Snake Robot

Robocon ( A pride of us)

Shopping Guide

If you are ameture than you must have ploblems in collecting parts & tools. Here's a solution.

(In Dhaka)

1. Stadium Market


( It is famous for electronics parts. But their price is little bit higher.)

2. Nobabpur

( Great for Hardwares and electrical & electronics parts. Screwdriver set, diagonal cutters etc. can be found here in a affordable price)

3. Dholaikhal

(here you can find different kinds of motors, other old hardwares taken from cars, ships, motorcycles. Beware! most of them are faulty. So, go there along with experienced one.)

(In Chittagong)

1. Ice Fectory Road



1>>Electronics Parts Price List
Resistar -1tk
capacitor -1tk
variable resister -5tk-10tk
veroboard-15tk -25tk
breadrboard -170tk
Soildering Iron -200tk
Soilder -10tk
Desoildering Pump -70tk-100tk
LED -3tk-5tk
Motor(1.5v dc) -30tk-50tk
Adapter -200tk
9V Battery -40tk
555 timer IC -10tk
LM 386 Amp -20tk
Flux Paste- 8tk
2>>Tools and Hardwares
Power driller
Hacksaw
Screwdriver Set
Diagonal Cutter
Wire Stripper
Multimeter
Hot Glue Gun
Rotary Tool
Heat Gun

Some Advanced Project Ideas

1. Fabrication of turbo super charger for two wheeler
2.Over speed indication and Automatic accident Avoiding System for four wheeler
3. An intelligent mobile robot navigation technique using RFID Technology (IEEE 2008)
4. Fabrication of Automatic hand break Release
5. Automatic pneumatic bumper for four wheeler
6. Fabrication of Foldable Electric Go Bed Drive
7. Shock Absorber Test rig using Cam and sensors
8. The development of intelligent home security robot (IEEE 2005)
9. Automatic temperature controller with cooling system for car
10. Fabrication of four wheel steering system
11. SMS Based automatic vehicle accident information system
12. Over speed indication and Automatic accident Avoiding System for four wheeler
13. Hydraulic hybrid system for four wheeler
14. Efficiency Increasing System in Automobile by using preheating method
15. A robot system for fire fighting in tunnels (IEEE 2005)
16. Remote controlled material handling equipment
17. Electronic Fuel Injection (EFI) system for Two wheeler
18. Fabrication of Automatic Electro-Hydraulic Jack for Four Wheeler
19. Automatic reserve indication system
20. D & F of Triangular air Compressor with Common Compression Chamber
21. Button operated electro-magnetic gear shifting system for two wheeler
22. SMS based automatic two wheeler locking system
23. Fabrication of queries controlling system for two wheeler
24. Fabrication of man less defense
25. GPS based vehicle root tracking system
26. Fabrication of Two Engine Synchronization for Four Wheeler
27. Design and development of voice / Tele operated intelligent mobile robot (IEEE 1997)
28. Fabrication of Automatic head lamp alignment system with Dim/Bright Controller
29. Automatic sensor based wall painting robot
30. Remote controlled scrap collecting vehicle
31. GPS based automatic vehicle accident information system
32. Automatic Differential Unit locking system for Automobile
33. Remote controlled tilting handicapped wheel chair
34. Electronic assisted hydraulic braking system
35. Smart shock absorber for automobile
36. SMS based vehicle Ignition controlling system
37. Fabrication of Adaptive breaking system
38. Electrical Power Generation system using Railway track
39. Fabrication of Automatic Vehicle Over speed controlling system for School Zone
40. GSM based two wheeler security system
41. Fabrication of three axis pneumatic modern trailer
42. Automatic Break Failure indicator and Engine Over Heating Alarm
43. Two Wheeler Automation with security System
44. Combined hydraulic and disk break
45. Vehicle Accident identifier with SMS informer
46. Compressed air production using vehicle suspensor
47. Remote controlled air craft (Flying Model)
48. Automatic Pneumatic welding Robot
49. Intelligent Active Suspension system for two wheeler
50. Remote operated weapon system
51. Fabrication of Sub-Marine (Model)
52. Automatic Scrap collecting Vehicle
53. Fabrication of Gear Level Indicator for Automobile
54. Automatic Vehicle Over speed Controlling System
55. Fabrication turbo charger for two wheeler
56. Video analyzing remote controlled vacuum cleaner
57. Fabrication of Electro-Magnetic braking System For Automobile
58. Fabrication of Go Ped Drive
59. Fabrication of Foldable two wheeler
60. Intelligent Braking System in Four Wheeler (IBS)
61. Emergency Braking System in Four Wheeler (EBS)
62. Anti-Lock Braking System In Four wheeler (ABS)
63. Artificial Intelligent based Solar Vehicle
64. Fabrication of Automatic pneumatic jack
65. Automatic Distance Measurement and Braking System By using Ultrasonic Waves
66. Fabrication of Automatic steering control system for automobile
67. Fabrication of Multi-Engine compressor
68. Computer controlled wireless robot with wireless Camera
69. Fabrication of Solar Race Car
70. Fabrication of Multi Nut (Wheel) Tightner
71. Electro-Hydraulic System for Automation in Four Wheeler7
2. Automated Guided Vehicle (AGV)
73. Automatic material handling Fire Fighting Robot
74. Aero plane Controlling System (Flying Model)
75. Fabrication of Hydraulic Break show riveting Machine
76. Automatic Vehicle Accident prevention system
77. Digital locking (Fuel, ignition, side lock) system (Password) for Two wheeler
78. Efficiency increasing system in automobile
79. Robot Controlled Vacuum Cleaner
80. Digital locking system for material handling vehicle
81. Fabrication of hydraulic screw jack
82. Intelligent Way Searching Pick and Place Robot
83. Automatic paint spraying pick and place Equipment
84. Fabrication of Path finding Vehicle
85. Automatic Electro-magnetic Clutch
86. Cell phone controlled pick and place robot
87. Remote controlled Pick and Place video analyzing robot
88. Fabrication of Fuel Injector testing equipment
89. Fabrication of Catelite converter for Automobile
90. Fabrication of Solar Hybrid Car
91. Fabrication of Fully Automated Intelligent Vehicle (Car Model)
92. Fabrication of Hybrid Vehicle
93. Sand Collecting Vehicle
94. Fabrication of Kids Car
95. Fabrication of Lube oil cooler
96. Automatic pneumatic vulcanizing Machine
97. Fabrication of Wind Energy Vehicle
98. Fabrication of Intelligent Motorized Hydraulic Jack
99. SMS controlled moving vehicle for industrial application
100. Voice Controlled Material handling vehicle
101. Cell phone controlled Solar Vehicle
102. Fabrication of Gas kit for two Wheeler
103. Fabrication of Electro-Hydraulic Braking system for Four Wheeler
104. Fabrication of Gas kit circuit board for two and Four Wheeler
105. Auto clutch for Automobile
106. Fabrication of Hydraulic Cylinder Liner Puller
107. Remote Controlled Solar Vehicle
108. Automatic Visitor Guided with material handling Vehicle
109. High Speed Indication and automatic Pneumatic Braking System
110. Automatic Railways Signaling System

Pneumatic And Hydrulic Based Projects


1. Fabrication of hydraulic hybrid system for four wheeler
2. Fabrication of automatic multi point grease gun
3. Fabrication of three axis pneumatic Modern Trailer
4. Fabrication of Smart shock absorber
5. Automatic pneumatic bumper for four wheeler
6. Fabrication of Pneumatic 4-axis JCB Equipment
7. Automatic sensor based wall painting robot
8. PLC based automatic multi-machine lubrication system
9. Fabrication of queries controlling system for two wheeler
10. Automatic Pneumatic Paper cup folding Machine
11. Automatic paint spraying Equipment
12. Automatic pneumatic vice and jack
13. Fabrication of hydraulic operated adaptive breaking system
14. Fabrication of Pneumatic operated ladle tilting mechanism for foundries
15. Automatic bar feeding mechanism for hack saw machine
16. Fabrication of hydraulic revolving multi-purpose trailer
17. Fabrication of Double axis pneumatic JCB Equipment
18. Automatic Electro-Hydraulic Braking System for Four Wheeler
19. Fabrication Automatic differential unit locking System
20. Compressed air production using vehicle suspensor
21. Fabrication of Pneumatic Operated Automatic packing Control Machine
22. Fabrication of Hydraulic Pallet Truck
23. Fabrication of Automatic Pneumatic Chapathi making machine
24. Fabrication of Pneumatic Auto gear changer
25. Fabrication of automatic pneumatic reciprocating grinding machine
26. Auto Indexing gear cutting attachment for pneumatic shaping Machine
27. Electronic Assisted hydraulic breaking system
28. Automatic Distance Measurement and Braking System By using Ultrasonic Waves
29. Fabrication of Pneumatic Auto feed Bottle washing Machine
30. Fabrication of Pneumatic Reciprocating Water Pumping System
31. Fabrication of Abrasive Jet Machine
32. Remote controlled car/bus Pneumatic door open/close mechanism
33. Automatic Pneumatic Cold Chamber Die Casting Machine
34. Fabrication of Automatic Pneumatic Hammer
35. Fabrication of Pneumatic Machining Time Reduction in shaping Machine
36. Automatic Paint marking machine for sprocket manufacturing industries
37. Automatic Pneumatic Welding Robot
38. Fabrication of hydro coupling mechanism
39. Automatic pneumatic Spring End Grinding Machine
40. Fabrication of automatic Multi-purpose press
41. Fabrication of Pneumatic automatic Vegetable Cutting Machine
42. Fabrication of Pneumatic punch die
43. Fabrication of Automatic Pneumatic Jack
44. Fabrication of Pneumatic Belt Conveyor
45. Automatic pneumatic welding machine
46. Fabrication of Hydraulic oil pump testing Equipment
47. Fabrication of Hydraulic Break show Riveting Machine
48. Fabrication of mirror cutting machine by using compressed air
49. Fabrication of Hydraulic Ladder
50. Highways high speed indication and Automatic Pneumatic Braking System
51. Remote controlled paint spraying Robot
52. Quick Lifting Hydraulic jack with gear arrangement
53. Fabrication of Hydraulic Pipe Bending Machine
54. Fabrication of Remote Operated Belt Conveyor
55. Fabrication of Motorized Hydraulic Jack
56. Fabrication of Hydraulic Pressure Testing Pump
57. Fabrication of Hydraulic Puller for Automobile
58. D & F of Pneumatic Multipurpose Press System
59. D & F of Automatic Pneumatic Ramming Machine
60. D & F of Pneumatic Four-Axis Material Handling Equipment
61. D & F of Pneumatic Auto feed Drilling Machine
62. Fabrication of Sticker Making Machine
63. Fabrication of PC based auto feed pneumatic vice
64. Fabrication of Motorized Zip Crane
65. Accident avoiding System for heavy Cutting Machine
66. Fabrication of Pneumatic Auto feed Metal Forming Machine
67. Fabrication of Automatic Pneumatic Shaping Machine
68. SMS controlled pneumatic Ramming Machine
69. Cell phone controlled pneumatic 4-Axis material Handling Equipment
70. Fabrication of CNC pneumatic packing control machine
71. Pneumatic Operated Emergency Braking System (EBS)
72. Pneumatic Operated Intelligent Braking System (IBS)
73. Anti-Lock Braking System (ABS)
74. Fabrication of Pneumatic Auto Feed Riveting Machine
75. Fabrication of Pneumatic Ball Printing Robot
76. Fabrication of Conveyer Operated Robot Hand Model
77. Fabrication of Paper Cup Making Machine
78. Automatic Pick and Place paint spraying Equipment
79. Pneumatic Auto feed lemon Cutting Machine
80. PC based Accident preventing system in cutting machine
81. Cell phone controlled pneumatic 4-Axis material Handling Equipment
82. Fabrication of Automatic Pneumatic Stand for two wheeler
83. D & F of Hydraulic Press with Power Pack
84. D & F of Pneumatic Injection Moulding Machine
85. Fabrication of Radial Plunger Pump
86. Fabrication of Auto feed pneumatic vice
87. Fabrication of Hydraulic Cylinder Liner Puller
88. Fabrication of Hydraulic Trolley Type Jack
89. D & F of Hydraulic Lift with Pressure Booster
90. D & F of Pneumatic Automatic Printing Press
91. Fabrication of Automatic Pneumatic Bottle Washing machine
92. Fabrication Pneumatic Leaf-Cup Making Machine
93. Sensor Operated Automatic Ramming Machine
94. Fabrication of Pneumatic Bending/Bend Removing Machine
95. D & F of Pneumatic Automatic punching and riveting Machine
96. D & F of Hydro-Pneumatic Vice with Pressure Booster
97. D & F of Automatic Pneumatic Riveting Machine
98. Electro hydraulic System for Automation in Vehicle
99. D & F of Automatic Lubrication System
100. D & F of Pneumatic Bearing Puller
101. Combined hydraulic and disk break system
102. Fabrication of Automatic Electro Hydraulic Braking System
103. Highways high Speed sensing and Automatic Pneumatic braking System
104. Pneumatic Auto indexing Drilling Machine
105. Accident Avoiding System for Punching Machine
106. Automatic Sensor Operated Pneumatic Braking System
107. D & F of Pneumatic Bearing Press System
108. Fabrication of Mini Hydraulic Hand Operated Zip Crane
109. Fabrication of Pneumatic Multipurpose Machine
110. Fabrication of Pneumatic Slotting Machine
111. Fabrication of Pneumatic Automatic sheet Cutting Machine
112. Automatic pneumatic vulcanizing Machine
113. Pneumatic based Intelligent Active Suspension system for two wheeler
114. Pneumatic Auto feed Sheet Cutting Machine
115. Sensor Operated Auto feed Punching Machine
116. Fabrication of Pneumatic trainer kit with air compressor
117. Fabrication of Hydraulic Lift with Power pack
118. D & F of Pneumatic Vice
119. D & F of Hydraulic Injection Moulding Machine
120. Fabrication of Hydraulic Hand Operated Bus Bar Bender
121. Fabrication of Pneumatic Mobile Crane
122. Fabrication of Pneumatic Pick and Place Robot
123. D & F of Hydraulic Scissor plat form Machine With Power Pack
124. D & F of Pneumatic Auto Feed Punching Machine
125. D & F of Mini Hydraulic Press
126. D & F of Pneumatic High Speed Hack Saw Machine
127. Fabrication of Intelligent Motorized Hydraulic jack
128. Fabrication of Pneumatic Cutting and Grinding Machine
129. Fabrication of Pneumatic Screw Driver Machine
130. Fabrication of Automatic pneumatic Jack for Four Wheeler
131. Fabrication of Pneumatic Sander and Polisher Machine
132. Pneumatic Multipurpose Grinding Machine
133. Pneumatic 3/8-th inc Reversible Drilling Attachment
134. Fabrication of Pneumatic Belt Conveyor
135. Automatic Pneumatic Reciprocating Water Pumping System
136. Electro-Hydraulic System for Automation
137. Fabrication of CNC pneumatic punching machine
138. Fabrication of PC based pneumatic Ramming Machine
139. Fabrication of CNC Drilling Machine
140. Fabrication of Pneumatic Operated Inspection conveyor
141. Fabrication of Pneumatic operated Conveyor Automation
142. Fabrication of Automatic Reverse Braking System for Automobile
143. D & F of Hydraulic Scissor Lifter
144. D & F of Pneumatic reciprocating Hack saw Machine
145. Fabrication of Automatic Electro hydraulic Jack

Thermal Refrigeration Based Projects


1. Fabrication of thermo-electric solar air conditioner
2. Water Cooler [censored] Air Conditioner
3. Fabrication of thermo-electric refrigerator
4. Transformer heat reduction system
5. Fabrication of furnace using infrared Lamp
6. Water cooler [censored] Water heater by using refrigeration System
7. Remote controlled boiler flame adjustment system
8. Fabrication of Automatic temperature controller with cooling system
9. Fabrication of Hot and Cold Water Dispenser
10. Fabrication of Solar air conditioning Machine
11. Waste chill recovery heat exchanger
12. Fabrication of Solar Air Conditioner
13. Fabrication of Mist Coolant system
14. Automatic Electro-plating coating process
15. Fabrication of Solar Water Heater by using parabolic collector
16. Electrical Power Generation using Thermal Power Plant
17. Fabrication of Solar refrigeration system
18. Fabrication of Bottle Cooler
19. Fabrication of Solar Fridge
20. Fabrication of Solar Kettle (or) Solar Parabolic Collector
21. Fabrication of Solar Air Cooler
22. Fabrication of Activated Carbon Manufacturing Plant
23. Fabrication of Mini Water Heater
24. Automatic pneumatic vulcanizing Machine using heat sensor
25. Solar Water Purification by using thermal method
26. Fabrication of Paper cup folding Machine
27. Fabrication of Ground Dryer
28. Fabrication of Micro Wave Oven
29. Fabrication of Miniature Boiler
30. Fabrication of Solar Air Dryer
31. Fabrication of Lube oil cooler
32. Fabrication of double effecting solar cooker
33. Fabrication of Solar Air Cooler [censored] Heater
34. Fabrication of refrigeration system (trainer)
35. Fabrication of L.L.D.P. Material extruder
36. Fabrication of solar Water Heater
37. Fabrication of double reflection solar Cooker
38. Fabrication of Cooling tower
39. Electrical Power Generation using Steam Power Plant
40. Fabrication of Solar Water Disalation (Purification) by using parabolic method
41. Multi-Purpose Ground Dryer (or) Multi-Purpose Dryer and Room Heater
42. D & F of Chemical Processing Plant
43. Fabrication of solar water disalation by using photovoltaic method
44. Fabrication of automatic humidification system

BUET ME'03 Batch Project Ideas

1.Automatic Weight Sensing Sliding Door (click here to download)

BUET ME'06 Batch Project Ideas

No Data Available

BUET ME'04 Batch Project Ideas

These Projects Ideas Were Prososed By ME'o4 Batch of BUET :

1. Robotic Ball Throwing Arm (click here to download)

BUET ME'05 Batch Project Ideas

These Awesome Project Ideas were submited by ME'05 batch of buet :

1. Scissor Lift
2. Programmable Pilot Static Tube Traversion Mechanism
3. Digital Anemometer
( Team Members:
1. Anjan Goswami 0510126
2. Jawad Al Ratun 0510110
3. S.M. Rezaul Haque 0510118
4. Islam Md. Rizwanul Fattah 0510115 )
4. Automatic Titrator
5. The Amphibian Car
( Team Members:
1. Adip Al Quraishi 0510002
2. Mahmud Adnan 0510011
3. Hasib Ibne Rahman 0510021
4. MD. Zahabul Islam 0510030 )
6. Climbing Robot
7. Trackerbot 1.0
8. Autometic Gas Oven
( Team Members:
1. Rony 0510043
2. Shahadat 0510052
3. Bappa 0510061
4. Pavel 0510070 )
9. Terrain Hazard Optimised Robot
( Team Members:
1. Atunu 0510005
2. Rokan 0510014
3. Prajna 0510024
4. Nahid 0510033 )
10. Autometic Butterfly Valbe Control
11. Spy Robot
12. Robotic Vecuam Cleaner
13. Mechanised Intelligent Spray Painter
14. Autometed Secured Garage Door
15. Scrap Metal Carrier
16. Autonomous Lettering Device
17. Driver Free Electric Train With Autometic Door System
18. A Crane Of Two Arms
19. Autoneted Spot Welder
20. Mini Gripper and Mover
21. Dual Surfaced Mechanical Billboard With Automated Luminosity Control
(click here to download)
22. Autometic Painter Bot
( Team Members:
1. Anjan Goswami 0510057
2. Jawad Al Ratun 0510039
3. S.M. Rezaul Haque 0510048
4. Islam Md. Rizwanul Fattah 0510066 )

Check The Image Gallery For Images:


Image
Gallery

Making PCB at Home (Final)

Drilling
Drilling with 0.8mm drill bits can be a bit tricky as it's easy to break the drill bits. Always hold the drill straight and do not bend it when the hole has started. Putting a soft block of wood under the PCB provides a good base to drill into. Once you have become experienced at drilling I would recommend using Tungsten Carbide drills (FE49D) which easily break but last much longer.
1. Dry off the board and clean away the blue etch resist with PCB solvent cleaner
2. Using a 0.8mm PCB drill bit drill out all of the component holes
3. Some 1mm holes may need to be made for connectors, 3mm for corner fixings
4. Finally use a PCB rubber to clean the copper ready for soldering
So now your PCB's finished and you can start soldering the components in. You should do this soon after you have cleaned the PCB (within 1 hour) as the copper soon oxidises and becomes hard to solder onto.
Get Full Bangla Instructions

Making PCB at Home (3)

The Etching





Now for the messy bit, etching the PCB to remove the unwanted Copper. Please read the warning at the top of the page as it is important to take appropriate precautions before handling the etch chemicals. I recommend you do this outside or in a shed and you must ware glasses and gloves. Keeping the etch chemicals warm (45deg C) is essential as it reduces the etch time from over an hour to about 15mins.

1. Dilute the concentrated Ferric Chloride fluid with water (1:1) and pour into the one letre glass jar and screw the top on

3. Place a sheet of news paper on a flat surface and put the trays on this

2. Fill the kettle with water and boil

3. Heat the Ferric Chloride jar in a bucket of hot water. Caution don't spill any drops and keep away from food





1. Pour 1cm of boiling water into the bottom tray then place the other tray on top
2. Put the PCB copper side up on the top tray and pour all the Ferric Chloride on top
3. Gently rock the top tray to keep the etch fluid moving avoiding spillage
4. After about 15mins all of the unwanted Copper should have disappeared
5. Remove the board and drop it into a bucket of cold water to clean off
Usefull tip: For small boards just drill a 1mm hole in the corner of the board and tie 2ft of strong cotton to this. Now put the board straight into the Ferric Chloride jar with the end of the cotton outside and put the top on the jar. Keep the jar hot by heating in a tray of boiling water and gently rock to keep the etch fluid moving. Every 5mins use the cotton to lift the board out and check progress. This method is much less messy as the Ferric Chloride is always left in the glass jar.

Making PCB at Home (2)



The Artwork



Until recently the artwork had been an area of DIY PCB manufacture which caused the biggest problems. But now by combining high quality laser printing with the Press-n-Peel PCB transfer system these problems have been solved. The first stage is to transfer the circuit layout from the PC to the special Press-n-Peel film. You will find that my projects provide Laser print files (.prn) for printing the circuit layout direct onto this film.

1. I cut the Press-n-Peel film in half for small boards so it lasts longer

2. Put the film in the laser printer so that the print will appear on matt blue side

3. At a DOS command prompt type: copy filename.prn lpt1 to print onto the film

This will produce a contact print where the black image will end up as Copper on the final PCB. Now to transfer the artwork to the Copper board by following the instructions with the Press-n-Peel film.


1. Clean the Copper board very well with the PCB cleaning rubber
2. Heat the cloths iron to 300 deg.F (Acrylic to Polyester setting)
3. Hold the film with the print in contact to the Copper and smoothly iron the film down until the print appears black through the film (about 1min)
4. Allow 5mins to cool down (or speed this up with water) then peel the film off
This should produce a clean black print onto the Copper. If you let the film move or overheat then you will find that the tracks and writing will be smeared and out of focus also the film may be wrinkled up. If you don't use enough heat or heat unevenly then the film may not stick or be dark enough. In either case clean off the PCB and try again, you should get it right after a couple of goes.

Making PCB at Home (1)

One of the most discouraging things about making a hardware project (apart from obtaining all of the components) is building the printed circuit board - PCB. It is sometimes possible to use strip board or some other pre-fabricated board but more often than not the circuit complexity and performance requires a proper PCB to be made. The good news is that due to improvements in printing and processing technologies it is now relatively easy to make inexpensive high quality PCB's at home.
WARNING: Making PCB's requires the use of Ferric Chloride (FeCI3) which is corrosive so avoid skin and eye contact. Remember safety first use glasses, gloves and protective overalls. Ferric Chloride is also very good at distorting cloths weeks after you think you have washed it off. If you do get any on your skin then wash it off immediately with lots of water and soap.
The Shopping List

This is the minimum things you will need:
1. Access to a PC with a Laser printer eg: HP Laser Jet
2. Cloths iron
3. Kettle
4. Water bucket
5. A one litre glash jar with plastic screw top (biscuit jar)
6. PCB hand drill with 0.8mm and 1mm drill bits - FR84F, QY64U
7. Copper-Clad fiberglass board - WF40T
8. Press-n-Peel PCB transfer system - AB15R
9. Ferric Chloride Copper etching fluid 250ml - WF10L
10. Two plastic etching trays (ideally different sizes) - CH38R
11. PCB cleaning rubber - HX04E
12. PCB solvent cleaner - LL59P
13. Safety glasses, latex gloves, old clothes/overalls - KE83E, YJ84C

Microcontroller overview (Final)

Designing a Circuit



First, Think of what inputs and outputs your circuit will have: switches, sensors,lights, motors, etc. Then you can determine the power requirements. For simplicity, our circuit uses batteries, but a wallwart with a voltage regulator is more reliable.



Next, determine how your inputs will interface with the microcontroller.Some pins take only digital inputs. The general rule for this is that powerbrings the voltage up and ground draws it down. To make a button that changesan input pin from 0 to 1.


Some micro pins take analog as well as digital inputs; you can feed these fromanalog sensors that produce a range of electrical values. For example, a potentiometer'sknob changes its resistance, which changes a voltage fed through it. Connect a pot to a pinthat works as a ADC converter and the micro will convert the current position of the knob into a number you can program with.

An LEd will light up directly from a micro's output pins, but things like motors need more current. You can supply this by connecting an output pin tothe base of a transistor that has a higher current runing through it. Motors may generatevoltage spikes that can damage your chip, but a diode running in reverse across the transistorwill protect the circuit.
Once you know which sensors connect to which types of pins, you need to study your microcontroller's datasheet.As with most micros, pins on the PIC12F675 perform multiple tasks, and you set resisters in your software to tellthe pins how to behave in the resisters table from the PIC12F675 datasheet on Microchip's website.


Microcontroller overview (3)

Microcontroller Programming Hardware and Software




To Program a low-level chip,you need three pieces of hardware, a PC, a hardware programmer with communication cable, and the target circuit that you'll plug the microinto. You'll also need some software.






1. PC: You need at least a pentium III PC. It is better if it goes throua windows platform. Coz, almost all of the softs are windows based. But make sure that it has a parallel port.




2. Hardware Programmer: This is what you plug your chip into in order totransfer the program from PC. Traditionally, you then remove the chip and placeit in circuit, but some hardware progremmers support in- circuit programming, which lets you burn chip in place.

tutorial (click here to download)
















3. Target Circuit: If you're just starting out with microcontroller programming, you can experiment witth a demo board. These are PCBs with a space to plug in your chip and various input and output devices such buttons, LEDs. Using these board will help you for running demo.If you have standalone circuit idea in mind, the next step is to build your own. There planty of circuits published online, andyou may be able to find one that's close to your need.
4.Software: In addition the hardware, you need to put together your softwaredevelopment environment. This will include the text editor where you writeyour code, a compiler, the software that drives your hardware programmer andmicro simulation and debugging tools.You can get a lot of such in web. Try any IDE to get better look.

Microcontroller overview (2)

Microcontrollers are small computers, all on one chip. The chip carries a central processing unit,program memory,data memory, and input/output (I/O) pins that can connect the instructions in theprogram memory., which tell it what to input and output to the pins.


Programming The microcontroller means writing and storing these instructionsin the chip's memory. The microcontroller speaks assembly language, which containsof binary instructions. You can use it but people prefer to program in C coz it is easier to understand.


Low-Level microcontroller VS. BASIC Stamp Module



First, Decide whether you want to use a low-level microcontroller or BASIC Stamp ModuleInexpensive low level chips (a.k.a. PICs), from Microchip or Atmel,require additional hardwaresoftware and effort. BASIC Stamp modules from Parallax and Netmedia are easier for beginners but pricer.BASIC Stamps combine their microcontroller with oscillators and other components into one.



Microcontroller overview (1)

Easy-to-program chips tell circuitry to do what you want




Press a button and a light flashes a pattern. What makes it flash?It seems like there's a tiny monkey in there flipping the switch.It so, many household items contain these tiny monkeys. They'rewhat send the infrared(IR) codes out of our remote contols andthen decode them in our televisions. They run our washing machinesand toasters. These tiny monkeys are microcontrollers, and you can train them to help you in your projects.

A small tutorial goes (Here)