In the assignment i have to add the LED and one button. I have used previous assignment Eagle schematic and here i have added LED and button.I am going to program the Attiny44 microcontroller as whem i will push the button LED should Glow on the occurance of button event. also i am providing delay of few millisecond and can provide loop for LED ON-OFF
I am using 14 pin Attiny44 microcontroller IC VCC-Power and GND-Ground, PB0-PB3 is the i/o Port with internal pull up register and PA0-PA7 is the i/o port with internal pull up register.
I am connecting the Button as input to the PB port and LED with current limiting sensor as a output Device.
First we need to design the circuit in eagle following diagram shows the .brd file
Figure.1
There is Short in two tracksin the middle of IC.I corrected and made other PCB but forgot to take picture of new PCB before soldering the IC.
Figure.2
Figure.2
Figure.3
In the .brd file one connection of button is attached to the attiny44 five no. pin. and 10 no pin is connected to the LED through register
