| Intermediate Filament Proteins Resource |
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Digital Pin 2 = input
Digital Pin 3 = green LED output Digital Pin 4 = red 1 LED output Digital Pin 5 = red 2 LED output MATLAB function: writeDigitalPin turns on (= 1) and turns off (= 0) the 5 V power source in the Command Window.
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%% Arduino test 1 LED MATLAB Script
% green blinking when push button is not pressed % red blinking when push button is pressed a = arduino; configureDigitalPin(a,2,'input'); % pin 2 input configureDigitalPin(a,3,'output'); % pin 3 output configureDigitalPin(a,4,'output'); % pin 4 output configureDigitalPin(a,5,'output'); % pin 5 output % For Loop with delay to show the outcome of Push Button for C = 1:100 PB = readDigitalPin(a,2); % press button result if PB == 0 for CC = 1:10 writeDigitalPin(a,3,1); % green on pause(0.05); writeDigitalPin(a,3,0); % green off pause(0.05); end else for CC = 1:10 writeDigitalPin(a,4,1); % red 1 on writeDigitalPin(a,5,1); % red 2 on pause(0.05); writeDigitalPin(a,4,0); % red 1 off writeDigitalPin(a,5,0); % red 2 off pause(0.05); end end pause(0.1); end Since the two Push Buttons are in Parallel, either one can be pressed to light up the LED.
The Push Buttons are in Series, hence to complete the circuit and light up the LED, both needs to be pressed simultaneously.
When the Push Button is pressed, the circuit is completed. The 22.73 mA current then lights up the LED.
V = 5 V; % supplied by the Arduino microcontroller connected to a PC R = 220 Ω; I = V/R = 5 V/220 Ω = 22.73 mA; |