Lecture 13

Output Devices


Output device :


This assignment, as in input devices is part of my final project. I use my output device board (which is same as input device board) with Led's, which shows you how much water remains in bucket with the help of Led's . Attiny 44 used as IC and N mosfet as gate for open and closing devise. Design of board and schematic same with input device. Programming add for Led's.




This Power MOSFET is produced using ON Semiconductor’s trench technology, which is specifically designed to minimize gate charge and low on resistance. This device is suitable for applications with low gate charge driving or low on resistance requirements.


A useful general purpose Mosfet transistor in a surface mount SOT23 package. Suitable for 3.3V and 5V systems.




Features


MOSFET N-CH 30V

Transistor Polarity N Channel

Continuous Drain Current Id: 180mA

Drain Source Voltage Vds: 60V

On Resistance Rds(on): 5 ohm

Rds(on) Test Voltage Vgs: 10V

Threshold Voltage Vgs Typ: 2.1V

Power Dissipation Pd: 360mW

Operating Temperature Range: -55°C to +150°C

Transistor Case Style: N-CH 30V

No. of Pins: 3




Benefits


Minimize conduction loss

Reduces dynamic power losses

Drive at low voltage

ESD resistance

Environmental consideration


Making of board


I designed input devices board to accommodate also as an output device. Please refer to input devices week to show the design board.




LED as output device

I've used array of LEDs as an output device, here in the output device board you can observe four LEDs connected to the different port pins of the micro-controller when the micro-controller detects the signal coming from the MOSFET it sends the output signal on the particular LED pin.

For the demonstration of the output devices I've used a code which generates the blinking pattern of the LEDs. Which you can see in the video attached below.



Here's how I've connected the LEDs to the micro-controller.


Rolling LEDs




Output device in my final project




Download the files from Below link


Water level sensor code
Board Files