| Command |
Used where |
Function |
| pinMode(pin,IN/OUT) |
setup |
This defines which pins will be used and whether they ar inputs or outputs(TURNS OUT YOU ONLY NEED THIS FOR DIGITAL PINS) |
| digitalRead(pin) |
loop |
This will return a 1 or 0 depending on if the pin is high or low |
| digitalWrite(pin,HIGH/LOW) |
loop |
Will turn an output pin high or low depening on what you choose |
| delay(T) |
loop |
Creates a software delay(not accurate) of length T mili-seconds |
| If(1==1){code here} |
Both |
An if statement will run lines of code within the curly braces below it if the question in the circular brackets is true(check the bottom of the page for more info) |
| else{code here } |
Both |
If an if statement fails then it can run another section of code this is donated by else and curly braces |
| for(int a=0;a<=10;a++){code here} |
Both |
A for loop runs a section of code as many times as you tell it to in this case it will run for values a=0 to a=9 |
| Serial.print(showThisValue) |
loop |
When you want your arduino to interface with the computer you can send it information using this and read it in the serial monitor |
| Serial.begin(9600) |
setup |
This sets the Bode rate with the computer (communication frequency) and you can get gibberish back if you don't specify to the computer |
| analogRead(pin) |
loop |
Now this is for the analog pins compared to digital and will send back a value anywhere between 0 and 1023 (0 being low and 1023 being high) |
| analogWrite(pin,value) |
loop |
This now outputs a voltage from your set pin ranging from 0 to 255. Analogue write are actually PWM meaning actually just fast switching digital and therefore are from digital pins (ones that have PWM are denoted with a ~) |
| While(1==1){code here} |
both |
This will run a loop that will run until the case at the top is broken or it encounters break; |
These are some of the most common componets you will come across, you should start getting used to them. If there is a component you don't know how to use just ask rather than popping them.
This is what all the funny colours on your resistors mean, read this by holding the brown/gold/silver band to the right and read off the values with the first ones meaning the actual numbers and then the last (excluding the gold/silver/brown) is your multiplier aka 2 would mean *100. The last band is the tolerance which is generally gold (+/-10% of the merked value) unless the resistance value is key