ARDUINO VARIABLES AND CONSTANTS - Arduino programming theory #2

[@BasonTech]

👉 Don't forget to check arduino-tutorials.net for more Arduino tutorials and projects. If you have questions, don't hesitate to ask them in de comments. Remember: There are no stupid questions 😃 🔔 Want to stay up-to-date with the latest videos? Subscribe to the Bas on Tech channel!

[@thefsquad7787]

Bedank man duidelijke video' s goed zo bas...

[@BasonTech]

Thanks! :)

[@carolinaborneaprendeelctronica]

thanks now i understand the const variable

[@BasonTech]

Great to hear! 😃

[@youssef8955]

hi man is there any instruction that allows you to configurate a lot of pins at one because I'm working with an arduino mega2560 and I have like 36-40 pins to configurate.

[@BasonTech]

Unfortunately not, but you have to look at multiplexing of shift registers. The MAX7219 might be able to help you with this. It is used to drive 7-segment led displays

[@NarutoUzumaki-ty2sk]

Hi Man Does It Matter If You Type The Variable Before Or After void setup?

[@BasonTech]

Hi, it is best practise to write your global variables on the top of your code, under the includes. It probably does work, but it is not recommended. 😃

[@tomgaming410]

If I use 2 of the same integers and use const at the same time, what happens? I also love your videos you explain everything so clearly thanks to you I was able to learn this course in 7 minutes

[@BasonTech]

Sorry I don't get your question. Do you mean that if you have an int and a const with the same name?

[@LofiQuranStream]

Thx!

[@BasonTech]

You're welcome! 😃

[@pfranzpflanze4667]

Hello. But what is the difference between const int and #define?

[@BasonTech]

Good question! This post on stackoverflow gives an excellent explanation: stackoverflow.com/a/6442372/512089

[@zeropoint-1041]

was not declared in this scope 18 | const char

[@BasonTech]

Looks like you've made a typo on line 17 or 18. Maybe you forgot something?

[@dakshmehta3518]

Hi In arduino starter kit(love o meter) They used a constant for a pin Code: const int sensorPin = A0 This is not even a integer how is it being run as there is a 'A' in it?

[@BasonTech]

Very nice question! I couldn't find proof but A0 is actually a constant which points to the correct pin. If I remember correctly something like pin 14 is analog 0. So A0 actually represents the value 14 which is an integer 😃