B4R Tutorials

It is based on this tutorial. Nano programmed via B4R and visualizing the data from the MPU6050 with Processing -
See this posting for basic setup

B4R code:...

 

This is by 99% a tutorial and by 1% a question. The file in the link contains some notes for me I devised from a lot of tutorials on how to burn a bootloader to a ATMEGA328P-PU wired on a...

 

This is a very useful tutorial by the guy in dronebotworkshop which opened new horizons for me since I didn't know there were two kinds of shift registers (actually four). Enjoy:

 

I just found this and it looks very promissing:

LCD Custom Character Generator

online character designer for Liquid Crystal Display (LCD) and create code for arduino.

maxpromer.github.io

 

In this example we will connect an Android...

 

The attached project is based on this posting:

How To Track Orientation with Arduino and ADXL345 Accelerometer

In this tutorial we will learn how to measure angle and track orientation using the Arduino and the ADXL345 Accelerometer sensor. The ADXL345 is a 3-axis...

howtomechatronics.com

Have downloaded and installed...

 

With the rSoftwareSerial library you can turn regular pins to serial ports. This is useful as the hardware serial is used...

 

B4R strings are different than in other B4X tools. The reasons for these differences are:
1. Very limited memory.
2. Lack of Unicode encoders.

A String object in B4R is the same as C char*...

 

This example uses an Ethernet shield to connect to a server. In this case the server is implemented with B4J, though you can easily implement a similar server with B4A or B4i.

Whenever the user...

 

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...

 

The attached project implements the I2C communication protocol to set the Date and Time of a DS3231 RTC module. The protocol is hard coded (i.e no library) and you can therefore use any 2 digital...

 

I have one of the "MH-REAL-TIME CLOCK MODULES - 2" with a DS1302 chip. I thought it would be interesting to see if I could read the seconds, minutes, hours, year, month, day of month, and day of...

 

Here is this RGB Led Strip light project I have been playing around with.

I am including the Android program I use to play with colors.

NOTE when using the Android program you can select a theme...

 

Hi everybody,

looking for free PCB design software I came accross the EasyEDA. It is one of the best I have seen since you get to design multilayered PCBs and see the designed PCB in 3d view...

 

The attached project is based on these postings:
https://gist.github.com/bloc97/b55f684d17edd8f50df8e918cbc00f94...

 

It is based on this posting. I am using an Arduino Nano to control the 12 LEDs using pins 8, 9, 10, and 11 of the Nano. Just thought it would be interesting to give...

 

The library rAdafruitGFX is used to draw on TFT screens. It has a default font and does not give a way to change the font for drawing text.
This is what I got when drawing very large characters...

 

So long that I haven't played with B4R ! Today I want to test a vibration sensor (it's on a closed case yet)
The sensor signals when a sensor shake happens. It's a simple sensor (detected/not...

 

B4R v1.50 includes a new type named B4RSerializator (in rRandomAccessFile library).
B4RSerializator solves a difficult and common task. Sending messages with multiple fields to other platforms...

 

As in the other B4X tools you can embed C or C++ code in the project.

Example:

Sub Process_Globals
   Public Serial1 As Serial
   Private Result, N1, N2 As Int 'ignore
End Sub

Private Sub...