B4R Tutorials

https://blinky-nina-w102.blogspot.com/2021/04/u-blox-nina-w106-sendo-programado-em_21.html

 

This is my humble effort to produce a weather station (based on this project). You will need:

1 x Wemos D1 Mini
1 x BME280 Sensor
1 x TP4056 Li-Ion Charging board
1 x 3.7V Li-Ion Battery
1...

 

 

Here's an advanced ESP32 Now example. The Inlince C code is from several sources (see the inline remarks).

Note: Sometimes there are issues with the Wifi channel (WiFi and ESP Now must use the...

 

I am working on a little thermometer project for my greenhouse using an ESP8266 and a temperature sensor. You have multiple sensors to choose from such as DHT11/22, BMP180 etc, but no...

 

Taken from here: https://randomnerdtutorials.com/esp-mesh-esp32-esp8266-painlessmesh/

The example uses the "painlessmesh" library. Just add it via arduino's library manager. Other libs will...

 

The code was taken from this site: https://randomnerdtutorials.com/esp-now-esp32-arduino-ide/

You need 2 ESP32's (one is the sender, the other one the receiver). Modify the code to have...

 

Here is something pretty handy some times:

Serial oscilloscope – x-io Technologies

x-io.co.uk

(11-3-2021) You can use it with this module in B4R...

 

Based on SSD1306 module, we can display animated images the same as displaying animated GIF on PC. The animated image is a byte array contains (n) number of frames(bitmap images) they all...

 

Based on SSD1306 module, we can implement horizontal and vertical progress bars. These bars could be drawn at X1-Y1 to X2-Y2 like drawing rectangles, also we need to pass the full scale...

 

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...

 

1 - INTRODUCTION

Hi Guys,

My wife's eldest son is addicted to PS4 F1 2020 game, even bought himself a Rig for a Steering Wheel and Pedals.
He works alongside with me and on one of...

 

Just for the fun of it. Can now control my Digital Satellite TV decoder from anywhere in my house....
Nano connected to the HC-05 module
B4A app connects to the HC-05 and sends the B4A "button...

 

Here is a very interesting video by the guy in Dronebot Workshop. This board seems amazing. I suppose since it is Arduino compatible it can also work with B4R with the exception of the commands...

 

Here is an interesting article for MQTT Broker scalability:

Top 10 IoT Scalability Tests for an MQTT Broker

Describing some key criteria when evaluating MQTT brokers to ensure the successful deployment/operation of an MQTT system.

www.hivemq.com

 

 

When you buy a WeMos it doesn't come assembled with the pins soldered. You will have to solder the pins. In the following schematic and code you will find a way to check the solderings of GPIO...

 

Here is some code to demonstrate using a single stepper motor, an Uno, the Adafruit Motor Shield and a three-way switch. The middle position of the switch is OFF. One side rotates the motor until...

 

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

With respect to the library from Erel...