Tuesday 24 April 2012

Week 14


This is my poster for my Final Year project presentation.

Thursday 19 April 2012

Week 13

This is a video of my project. My project is the process when there is light blind window will open and when the light Posted window blind closing. Consequently, when the hot weather there is light at more than 30 degrees celcuis blind window will close and when the temperature is below 30 degrees celcuis blind window will open.

Thursday 29 March 2012

Week 11


Blind shade which is already fitted with a motor. shade blind size is 26 x 26. motor is placed at the blind shade, to facilitate the movement of the curtain. This model has been installed for the final project.

This is a picture of the motor position in blind shade.

Thursday 22 March 2012

Week 10




 Complete join all the circuit, pic circuit, circuit LDR and driver circuit for the motor. Connection between the circuit controller circuit with LDR circuit is in port RC0 on pic while the motor driver circuit on RB1 and RB2 port pic and temperature circuit at port RA1.

Thursday 15 March 2012

Week 9


Test circuit temperature before construct to pic controller.As a result of continued IC process scaling, the importance of leakage power consumption is increasing. Leakage accounts for 40% of the power consumption of today’s high-performance microprocessors. Power consumption, temperature, and performance must now be optimized during the entire design flow. Leakage power
consumption and temperature influence each other: increasing temperature increases leakage and vice versa . Leakage power estimation is frequently used in IC synthesis, within which it may be invoked tens of thousands of times: it must be both accurate and fast.

  • It has an output voltage that is proportional to the Celsius temperature.
  • The scale factor is .01V/oC
  • The LM35 does not require any external calibration or trimming and maintains an accuracy of  +/-0.4 oC at room temperature and +/- 0.8 oC over a range of 0 oC to +100 oC.
  • Another important characteristic of the LM35DZ is that it draws only 60 micro amps from its supply and possesses a low self-heating capability. The sensor self-heating causes less than 0.1 oC temperature rise in still air.
        The LM35 comes in many different packages, including the following.
  • TO-92 plastic transistor-like package,
  • T0-46 metal can transistor-like package
  • 8-lead surface mount SO-8 small outline package
  • TO-202 package. (Shown in the picture above)

Thursday 8 March 2012

Week 8


The light sensors we used are LDR and single-supply transimpedance amplifiers OPT101 from TI. The light output increases linearly with light intensity. The photodiode has an internal amplifier with a 1MO resistance, which is used when pins 4 and 5 are connected together. Because of this amplifier, we could directly insert the output of the photodiode into the ADC in the MCU. The light sensors go into ports A.1 (inside sensor) and A.2 (outside sensor). We used a 5V regulated input from the MCU. At bright lights, the sensor read up to 4.27V on the voltmeter while getting a .06V when covered upr