B4R Tutorials

Cracked it - can connect the DS3231 to any 2 digital pins of my Nano and read the date, time, and temperature by making use of the B4A core library only. All control of the SDA (data) and SCL...

 

#Region Project Attributes
    #AutoFlushLogs: True
    #CheckArrayBounds: True
    #StackBufferSize: 600
#End Region
'Ctrl+Click to open the C code folder...

 

In this tutorial we will create a currency converter solution that shows the conversion from USD to other currencies on...

 

#Region Project Attributes
    #AutoFlushLogs: True
    #CheckArrayBounds: True
    #StackBufferSize: 600
#End Region
'Ctrl+Click to open the C code folder...

 

I thought I'd share this super simple example of creating a TCP Server and making very simple HTTP Client calls in same project. Typically most projects do one or the other and not both. Here...

 

Hey guys, how are you?
I want to share my second project with you
Fan control with timer
I just got the same control back via Alexa and it couldn't work so that you have the best interest. I'm...

 

For those who enjoy making their own 8 Relays, DS18b20, Buzzer, Display, LDR Sensor,

 

Good morning everyone,

I have put together this Excel file which shows the "translations" bettween AWG value of cable (american wire gauge) and european metric value of surface and diameter. I...

 

Example:

- AES256 encrypt a message with IV and Salt
- Base64 encode it
- send a http post request to a php script
- decrypt in php
- send back a AES256 encrypted and Base64 encoded message to...

 

This is a very detailed analysis on circuit analysis comprising of two videos. They are huge videos (1,5 hours almost each) but believe me it worth it seeing them. I faced all these subjects in...

 

Looking in the tutorial section of B4R I noticed that there was no example of how to connect and use the joystick module. So here is an example

Joystick Module MH / pin

 green : GND
   Red ...

 

Maybe useful for somebody. It's not my tutorial!

 

The Arduino 101 is an Arduino board developed by Intel. It is mostly compatible with standard...

 

Hi,

based on previous examples Analog Read Example, Analog Read Example using Ethernet, Analog Read Example using MQTT and Analog Read Example using LCD extended the...

 

it is just 2 basic projects to do some tests with MQTT
we have no personal data in projects, full provisioning is done by a Web server interface

one basic project is with Wifi and MQTT client...

 

Hi
Here a sample program to control/monitor 8+8 digital Out-Inp, plus an I2C ADC.
The program use the MQTT protocol.
This program is an evolution of the previous one I posted.

This version add...

 

The attached project comes from here. Used Inline C to create and display the big/large alphanumeric characters.

I am sure you will figure out how to make use of it (i.e calling and...

 

Here's an updated example how to

- generate an RSA keypair (Public and Private key) on a ESP32 and on B4x
- export these keys in PEM format (compatible with any other plattform like B4x, .net...

 

Hi everyone,

Yesterday I watched a video and I would like to share the knowledge accomplished with you. Do you know Billy Brown? Well "Billy Brown Revives On Your Gin But Values Good Whiskey...

 

Hi,

My first tutorial.

I've been playing with code to do what the title says and I have come up with this.

It should be self explanatory.

It relies on the use of B4Rserializator.

...