B4R Tutorials

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

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

 

This is an updated example how to en-/decrypt data with AES256.

Libs needed: jRandomAccessFile only

Notes:

- As far as I know, the ESP32 doesn't support padding like PKCS5/7, so I had to do it...

 

One popular MCU programmer made an YouTube stream with online testing and comparing the MCUs.
1. pin out high
2. make a test operation: a + b, a - b, a * b, a / b, sin(a), power(a, b), power(b...

 

I need to create a large string for http call. Using joinStrings if string variable is more than ~ 100 characters it crashes. I saw that an alternative is to use astream but how am i going to...

 

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'...

 

Good morning everyone,

I have put together this Excel file which shows the "translations" bettween AWG value of cable (american wire gauge) and european metric value of surface and diameter. I...

 

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

 

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

 

it is just 2 basic projects to do some tests with MQTT
we have no personal data in projects, full provisioning is done by a Web server interface

one basic project is with Wifi and MQTT client...

 

 

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

 

Update:

1. Init Display as a separate sub
2. TFT_ESPI as "global"
3. Drawtext as a sub with parms
4. Updated example


Although there is a library and I appreciate the good work, I like to...

 

Attached is a B4R project (using inline C) to manipulate the ports of the Controllino Mega. In this project we do the following:
1. Toggle the OVL (over voltage) LED of the PLC between on/off...

 

Hi guys,

I know I am not the most prolific B4R user, but I'm proud to have been the first to post on the "Share Your Creations" of this sub-Forum.
The mentioned sub-Forums have become more and...

 

arduino-cli interface for the new B4R version can be adjusted by a configuration file, where i could setup at least the EN language - create the file "C:\Program Files\Arduino...

 

Sub Process_Globals
    Public Serial1 As Serial
    Private Wire As WireMaster
    Dim bc As ByteConverter
End Sub

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

 

There is also an other quite useful capability of ChatGPT. It can help designing circuits by proposing components. The component it proposes is real and I have searched for it in...

 

As the title says, a standard WiFi-QRCode ist displayed on a tft screen. This can be scanned by any modern phone to automatically and it connects to the ESP, so you don't need to type any...

 

Today I was impressed. While being at the university, some 20 years ago I 've had a hard time understanding the principles of Transistors and MOSFETs. That was partly because I was starting...

 

An inline C wrap for this Github project. Should be able to use it for PID control. It works very well.

Study the code - change your pins to what you need. For the attached project:
A0 =...