B4R Tutorials

Hey everybody,

Just found this and looks very impressive...

 

Here I share some examples of how to use the thermometer and the Hall effect sensor in an ESP32. I hope and it will be useful

 

Hi,

please find a B4R & B4J HowTo Project: DHT11 Sensor Data send via RF24 Client to RF24 Gateway which routes to a Webserver displaying the Data in Google Chart

B4R RF24 Client

• ...

 

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...

 

This B4R project uses the SevSeg library via inline C to display characters on a 4 digit x 7 segment LED display (I am using a SMA420364L) - hard wired.

The inline C code via the...

 

Hello All,
Here I will show, how to parse the Latitude and Longitude from raw nmea data.
I am using gps module, Arduino Uno and additional softwareSerial.

Sub Process_Globals
    Public Serial1...

 

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)...

 

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...

 

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...

 

Not really a tutorial as I'm no good at writing tutorials, but important to know nevertheless.

WARNING: Relays can be used to switch very high voltages. Here in the UK 240VAC can easily...

 

Excuse my English, it's not my native language
I am not an arduino expert, I want to contribute with this code.

one of the main problems is to save information, one of this is in the EEPROM...

 

This example generates a OTP/2FA ("One Time Password") as you know it when you login to a website and you get a 6 digit code via sms. It changes every 30 seconds.

How it works:

- as it is time...

 

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...

 

B4R & B4J experiment to monitor the state of a Reed switch connected to an ESP8266 - a NodeMCU is used. If the Reed switch state changes (triggered by a magnetic contact), data is send to a B4J...

 

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...

 

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...

 

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...

 

Some of us may already know how to do that

http://www.rugged-circuits.com/10-ways-to-destroy-an-arduino/

 

I've been working with SSD1306 OLED for long time, in some projects I was in need to add some special fonts and add some graphics or icons like blue tooth symbols. I thought to put all these...

 

Tool to design LCD Display Layouts for 20x4 or 16x2 displays connected to Arduino, Raspberry Pi or other.

Screenshot application with generated B4R code and an Arduino UNO with...