B4R Tutorials

I use inline C in my B4R projects quite a bit in my projects. Mostly I have some C/C++ code I want to call from B4R subs - that's well documented on the forum (the Inline C intro here)...

 

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 ...

 

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

 

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:...

 

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...

 

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...

 

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...

 

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...

 

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...

 

Hello!

Last December I made a request for support for the ESP32 Camera support. Well, I finally found the time to work on it myself and here's my initial attempt at implementing this with...

 

Hello,

Since a while i searched to do the same thing i did on an ESP01, but with B4R.
I did it 1st time in Arduino IDE , see the video at bottom, that works well

I searched long time to...

 

Having had my work flow cut down in the middle by vicious "circumstances" I decided to let it all go and "go fishing" as mr. Miyaghi (Karate kid) would say. So I did some things I couldn't do...

 

Hi everyone,

Watching tutorials on YouTube I came across this application which allows you to check blue tooth communications. I suppose it will be handy to all of you...