B4R Tutorials

Mark Read · Apr 9, 2021

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...

embedded · May 31, 2023

Reading Time of DS1307 With ESP32:

#Region Project Attributes
    #AutoFlushLogs: True
    #CheckArrayBounds: True
    #StackBufferSize: 600
#End Region
'Ctrl+Click to open the C code folder...

embedded · May 15, 2023

ESP32 WITH 20X4 LCD USING I2C:

#Region Project Attributes
    #AutoFlushLogs: True
    #CheckArrayBounds: True
    #StackBufferSize: 600
#End Region
'Ctrl+Click to open the C code folder...

Peter Simpson · Jun 21, 2017

Here is a short tutorial on how to control an 8 channel relay module via MQTT. Below you will find both the WeMos and Android source codes needed to get started. The relay module is connected to a...

embedded · May 10, 2023

ESP32 WITH LCD (16X2) 4 LINES INTERFACE:

Sub Process_Globals
    Public Serial1 As Serial
    Private wifi As ESP8266WiFi
    Public mylcd As LiquidCrystal
End Sub

Private Sub AppStart
    Serial1.Initialize(115200)...

thali · Mar 29, 2023

It's a very small and quite powerful ESP32-board with WIFI/BLE and B4R support!

Use following board library in the Arduino-IDE in 'Settings'...

KMatle · Feb 6, 2023

Example:

- AES256 encrypt a message with IV and Salt
- Base64 encode it
- send a http post request to a php script
- decrypt in php
- send back a AES256 encrypted and Base64 encoded message to...

KMatle · Feb 4, 2023

This example replaces my previous examples with cleaner inline C coding (I'm getting better )using almost all variables from Globals. You can define the keysizes (eg. 2048 or 4096). It's fully...

hatzisn · Sep 29, 2019

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...

hatzisn · Nov 12, 2022

MicroPython officially becomes part of the Arduino ecosystem | Arduino Blog

At Arduino we like to experiment with new technologies to figure out if we can use them to improve the tools we make for our users. We’ve recently been experimenting with the Python language as a possible extension for our programming platforms, considering how it has become the number one...

blog.arduino.cc

TiDi · Jun 23, 2022

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...

TiDi · Jun 5, 2022

Hi
Here a sample program to control 8 outputs on arduino ESP32. The program use the MQTT protocol to exchange the data (really a single byte). By Node-red web interface the user set or reset the...

Erel · Apr 19, 2016

The rSD library allows reading and writing to SD cards. The Ethernet shield as well as other shields include a SD slot.

The steps required to work with files:
1. Initialize a SD object. You need...

rwblinn · Feb 15, 2021

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...

hatzisn · Aug 13, 2019

Hey everybody,

Just found this and looks very impressive...

aeric · Apr 4, 2022

This is not a tutorial for B4R. I think a glossary of terms might be useful for beginners to electronics and B4R. So I created my own list in GitHub to record the terms that I find need...

KMatle · May 10, 2021

This example (adapted from the Arduino examples under Arduino->File->Examples)

- downloads a file from a server (exactly: the update file)
- store this file to the filesystem (SPIFFS)
- starts an...

Erel · Jul 9, 2017

This tool replaces the browser based solution...

Erel · Jul 7, 2016

B4R v1.20 added support for ESP8266 modules. ESP8266 is a great module for IoT solutions. For a few dollars you get a powerful microcontroller with built-in support for wifi.

I recommend to...

KMatle · Feb 16, 2022

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...

B4R Tutorials

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Weather Station using MQTT, UDP and Thingspeak

Reading & Writing Time of DS1307 With ESP32 Using rWire

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ESP32 WITH LCD (20x4) Interface Using I2C

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MQTT controlling 8 relays, WeMos D1 mini WiFi, Android 4G

ESP32 WITH LCD (16*2) WITH 4 LINE INTERFACE (WITHOUT I2C)

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Tips to use an M5Stamp-C3U

ESP32: AES256 encrypted & Base64 encoded post message to and from PHP

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RSA Encryption: Create keys, en-/decrypt, hash, sign/verify signature (clean code)

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Correct this misconseption - "Call B4R subs from InLine c code" - see post #2

Arduino MicroPython is coming

MicroPython officially becomes part of the Arduino ecosystem | Arduino Blog

Node-Red MQTT controlling 8+8 digital Inp-Out and I2C ADC on ESP32

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Node-Red MQTT controlling 8 relays ESP32

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SD cards

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[Tool]LCD Display Designer

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Arduino Simulator

Glossary for Arduino Development

ESP32: Simple OTA/Update via WebServer

ESP Configurator based on B4RSerializator

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ESP8266 - Getting Started

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ESP32: OTP/2FA example

B4R Tutorials

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Privacy & Transparency

Privacy & Transparency