B4R Tutorial B4R Beginner's Guide

This guide is obsolete ! It is no more updated.
Please use the B4X Booklets.

Here you find the B4R Beginner's Guide in pdf format.

The source code for the example programs is included.

All suggestions, remarks and typo reports are welcome.

EDIT: 2016.11.06 Updated for B4R version 1.50

 

[derez]

Thank you Klaus for this contribution.
Although I consider myself as "not a beginner", I still find some pieces of knowledge that I missed until now.

 

[barx]

Should be an interesting read, thanks klaus

 

[Toley]

Thanks Klaus, very impressive work. I don't know where you found the time to write it, B4R has just been released since few weeks.

 

[Beja]

Thanks Klaus so much..
Spectacular fireworks on July 4th.
your contribution with this great guide is must have for anyone working with Arduino and B4R.. I will keep this guide next to my soldering machine.


p.s.
One suggestion: To add a Bluetooth tutorial something like the BT chat of B4A:
Android app: Hello
Arduino: Hi

 

[atiaust]

Thanks Klaus,
Excellent guide again. There is much info to remember when using the B4x products, your guide is a great help.

 

[rwblinn]

Well Done ... Chapeau.

It is not (only) a B4R beginners guide but an ESSENTIAL B4R GUIDE to read and to keep as a MUST reference.

Thanks a Lot.

 

[Beja]

Hi Klaus.
The project: LedGreenNoSwitchBounce.b4r is working fine in B4X 1.0, but in the beta 3 said access to board is denied.
Aduino Uno (MAKE)

 

[klaus]

Works fine here.
Are you sure that you don't have two B4R IDEs open ?

 

[Beja]

Works fine here.
Are you sure that you don't have two B4R IDEs open ?

It's working fine now in 1.2 B3.. I think your post above scared it..

 

[Erel]

The project: LedGreenNoSwitchBounce.b4r is working fine in B4X 1.0, but in the beta 3 said access to board is denied.

Note that such errors are never related to any specific project. It means that the serial port is busy. This can happen if there are several instances of B4R running, or Arduino IDE is connected to the board. Reconnecting the USB cable usually solves such errors.

 

[klaus]

Thank you guys for your likes and nice comments.
I answer only today because I was on travel three days with my grand children.

p.s.
One suggestion: To add a Bluetooth tutorial something like the BT chat of B4A:
Android app: Hello
Arduino: Hi

It's the first edition, I will not stop.
I will buy a Bluetooth board quite soon.

 

[derez]

multi dimension arrays.
In the guide you write in para 7.4.2 :

Public Data(3, 5, 2) As Int Three dimensions array of integers, total number of items 30.

But in code I see this :

 

[Cableguy]

B4R only accepts one dimension arrays, however 2dimension arrays can be simulated.
Have a look at the B4R snippet sub forum!

 

[klaus]

Hi derez,
Thank you for reporting it !
B4R supports only single dimension arrays.
It is updated for the next edition.

 

[klaus]

The B4R Beginner's Guide has been updated for B4R 1.50.