B4R is a 100% free development tool for native Arduino and ESP8266 programs.
B4R follows the same concepts of the other B4X tools, providing a simple and powerful development tool.
B4R, B4A, B4J and B4i together make the best development solution for the Internet of Things (IoT).
Screenshots & Videos
Installation
1. Install Arduino IDE (v1.8+)
- Arduino IDE: Arduino
2. Install and configure B4R
- Download B4R Full Version
- Open B4R.
- Choose Tools > Configure Paths.
- Use the Browse button to locate "Arduino.exe". It is located in the Arduino IDE installation folder.
- Choose Tools > Board Selector and select the board type and serial port.
3. Next Steps
- Join our community
- Download the beginner's guide
- Use the site search feature (top right corner). It works!
Documentation
- Documentation Index
- B4X Programming Language and IDE (pdf)
- Tutorials List
- Beginner's Guide (pdf)
- B4R Forum
- Timer based blink example
- Button example
- Memory, variables and objects
- Data types
- Strings and bytes
- Timers, loopers and CallSubPlus
- External serial connector
- Getting Started with ESP8266
Frequently asked questions
Q: Is B4R completely free, including for commercial purposes?
A: Yes.
Q: Can I access the C source code and the generated objects?
A: Yes. The code and the compiled objects are available under the Objects folder.
Q: Are the libraries open source?
A: Yes. B4R libraries are open source (MIT license). The code is available in GitHub.
Q: I'm getting this error on startup: "Application could not be initialized correctly error 0xc0000135".
A: Install Microsoft .Net Framework 4+
- Windows Vista+: .Net Framework 4.5.2.
- Windows XP: .Net Framework 4.0.
- Windows Vista+: .Net Framework 4.5.2.
- Windows XP: .Net Framework 4.0.