Switch
Switch is device for making and breaking the connection in an electric circuit.(Wikipedia)
Source:internet
In my electronics design i made hello board traces and i print that board.and print it on modela machine.
Then I solder that board and add the programm in this board through aurdino
programming to the board
In aurdino board we select aurdino as isp and we run that program for aurdino as isp the i connect the aurdino to the hello board as per the pin diagram.sck--pin13,miso--pin12,mosi--pin 11,rst--10,vcc--vcc,gnd--gnd
Then I oepn the button program and blink led program and i merge that both programme together.
After uploading succesfull to the aurdino then my board is worked.the first diagram showas my ied is on when board is connect to the supply
Then i press the buttun then buttun now act as ckt breaker and it turn off the led
Conclusion
in this part the buttun work as a switch and i understand that how input device paasing the signal to the board.
Gas sensor
This sensor helps to sense the lekage gas from lpg
Source:internet
Learning outcomes
we take a trial on gas we get the max gas here the we set that value at lekage loop and this value is match to sensor the message will be displayed
LDR
A photoresistor (or light-dependent resistor, LDR, or photoconductivecell) is a light-controlled variable resistor. The resistance of a photoresistor decreases with increasing incident light intensity. (basic electronics site )
Source:internet
First trial with normal light
Second trial with darkness on one ldr
Third trial with maximum light on one ldr
Learning outcomes
ldr is very user friendly after doing this trials i realize that this is the best for my final project and i will use it in my project the ldr output is decreses when darkness is present otherwise it is incresed
Temp.and humidity sensor
This sensor sense the surrounding temp.and humidity
Source:internet
Conclusion
TEMP IS sensoning with this sensor and it display using the serial monitor