B4R Tutorials

v4.00 - September 5, 2023: https://www.b4x.com/android/forum/threads/b4r-v4-00-is-available-for-download.150115/

• This update adds support for the latest version of Arduino IDE...

 

This guide is obsolete !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...

 

Hi,

as an example build a B4R & B4J solution to display DHT11 sensor data (Temperature & Humidity) in a google line chart created and refreshed by a B4J webserver.

Update 2016.05.24
There...

 

B4x Object Browser will soon support B4R and is free.

https://www.b4x.com/android/forum/t...r-api-documentation-b4x-object-browser.25682/

 

rRandomAccessFile v1.80 adds support for AsyncStreams in prefix mode.
All B4X development tools use AsyncStreams for network communication and now all of them support prefix mode...

 

Hello,
Not exactly a tutorial, but informative nevertheless.

This is how to map your Arduino projects to your WeMos. So for example in the blink demo, you just choose pin 2 for a WeMos instead of...

 

Hey everybody,

Just found this and looks very impressive...

 

 

MicroPython officially becomes part of the Arduino ecosystem | Arduino Blog

At Arduino we like to experiment with new technologies to figure out if we can use them to improve the tools we make for our users. We’ve recently been experimenting with the Python language as a possible extension for our programming platforms, considering how it has become the number one...

blog.arduino.cc

 

In this example the Arduino board acts as a server. Clients can list the available files and can download files stored on the SD card, which is part of the Ethernet shield...

 

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

 

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...

 

Hi,

based on previous Analog Read Example and Analog Read Example using Ethernet extended the solution by using the Arduino Ethernet Shield to publish the temperature from the Arduino...

 

Hi,

based on previous Analog Read Example, Analog Read Example using Ethernet, Analog Read Example using MQTT extended the solution by displaying the temperature (in C and F)...

 

Hi,

based on previous Analog Read Example extended the solution by using the Arduino Ethernet Shield to send temperature data to B4J server and receive confirmation.
Full project (with...

 

Hi,

a simple analog read example which reads the temperature from sensor TMP36 and logs the result.

Sub Process_Globals
    Public Serial1 As Serial
    Private TempSensorPin As Pin...

 

I took Erel's BLE example and added (as on the ESP32 side) AES256 encryption. For some reasons I wasn't able to use SPIFFS and/or WiFi parallel to BLE on the ESP32 side. Maybe you find a...

 

Some boards like Arduino Mega and Arduino Due have several hardware serial ports. These ports are very useful if you need to interact with multiple modules. The alternative for multiple hardware...

 

Hi All,

The attached zip files have the Arduino libraries and the B4R libraries together with a small B4R app showing how to use the Adafruit MPR121 capacitive touch 12 key keypad.

Big thanks to...

 

This is not really a tutorial, just a small piece of information regarding the microstepping.

With respect to the library from Erel...