DEV Community: Leonardo Pinezi

ArduBios news

Leonardo Pinezi — Sun, 12 Apr 2026 17:21:01 +0000

Ayo guys, Leonardo Pinezi here, i have some ArduBios brand news for you'all :D

In the official Gitub i've just posted the 2.0 and days after, the 3.0 version was posted that have lot features like:

LCD 16x2 I2C Graphics
Calls and Subroutines
More I/O features like screen clean opcode (0x08) and input in the port D2 for a switch that turn the Reg D Up(1) or Down(0) if pressed.
Buzzer support at port D13
Timing delay opcode (0x60, {0-255}) you can make a simple delay in your program.
Etc.

You can see all the new opcodes here ArduBios

Im actually working on a in-build hex code editor for the ardubios (actually working well) and a BASIC PROGRAMMING LANGUAGE compiler for it with Js, maybe ill do a Forth compiler for it using C.

ArduBIOS: Opcode Interpreter and ISA for Arduino

Leonardo Pinezi — Tue, 17 Mar 2026 18:13:48 +0000

Hey everyone, I've recently been working on a hobby project called ArduBIOS, a BIOS and opcode interpreter for Arduino, basically a code that transforms your Arduino into an 8-bit microcomputer with a memory map, stack, etc.

Feedback welcome <3

Features

Basic output system on Serial Monitor (25% of a BIOS)
128 bytes reserved for the stack
512 bytes reserved for user RAM (RAM for programs)
Registers and flags (50% complete): (Registers A, B, C, and D and zero, carry, and negative flags)
Basic opcodes
Jumps and conditional jumps (jmp n; jz n)
Simple mathematical operators (addition and subtraction)
Stop values and nulls (0x00; 0xFF)

Ideas for the future

Complete BIOS (input and output)
SD card support as a floppy disk
Generic keyboard input support
16x2 monitor support
File system as FAT12
Public assembler made in NodeJS
Interrupt system

You can take a look at Project details here: Github Project

Terminal based Graphical Interface in NodeJs

Leonardo Pinezi — Mon, 19 May 2025 00:21:47 +0000

This is a simple project i was working (started and published today)

Is TSGui (Terminal Simple Gui), is a simple Terminal based Graphical Interface for Linux/Termux made totally in NodeJs with Blessed library for CLI based Linux users who want a simple, low-weight and open-source Gui for use.

This project is only a prototype but i will publish new features.

Go take a look : https://github.com/leonardopinezi/TSGui

Virtual RAM & CPU in JavaScript

Leonardo Pinezi — Mon, 12 May 2025 15:46:17 +0000

Hello guys, my name is Leonardo Pinezi and at the last night, i just started a "simple" project... create a full emulated CPU and RAM with it own generic commands and assembler.

And i just finished it a little core, you all can see in my YouTube channel (i'm brazillan so it is in Portuguese).
https://www.youtube.com/watch?v=f7w27f5LURE&t=1s

My virtual machime don't have a cool name, so you all can give me good ideas :D and have simple commands :

0x00 = null - cost 0 bytes
0x01 = put - cost 3 bytes
0x02 = get to register - cost 3 bytes
0x03 = copy a register to other register - cost 3 bytes
0x04 = addiction of two registers - cost 3 bytes
0x05 = subtraction of two registers - cost 3 bytes
0x06 = jump to a slot in partition - cost 2 bytes
0x07 = jump to a slot in partition if register 4 == 1 - cost 3 bytes
0x08 = print a register value in screen - cost 2 bytes
0x09 = compare 2 registers and store in register 4 - cost 3 bytes
0xff = halt - cost 1 byte

This is just a simple project that i'm creating, if you guys have some feature idea to add, you all are free to tell me :3

By Leonardo Pinezi, the world conquistor.

Why Linux is my favorite OS and how start?

Leonardo Pinezi — Wed, 30 Apr 2025 14:43:07 +0000

First of all, why i fall in love with Linux <3

Linux is a open source OS Kernel Unix based created by Linus Torvals in 1997 and released on GitHub and this OS turn so popular because is 100% free to download, make your own OS called Distro(Distribution or Linux Distribution) and every Distro are ruled to be Free and a lot of Linux based Distros was make, the most popular is :

Debian
Ubunto (i love this one)
Linux Mint (i'm using right now)
Arch
Android (yes, the most popular mobile OS is Linux based) and a lot more, you can see Here

Now how to start on Linux?

First you need select a Distro because Linux isn't like Windows that almost every program works in every version, in Linux have some base systems and you need to select which one use.

Here a list of most popular and why use

Debian (lot of packages/apps to install) - Base
Linux Mint (Similar to Windows and for Low end PCs) - Debian based
Ubuntu (for coders and retro users) - Debian based
Kali Linux (Security and Pentest) - Debian based
Arch (for coders or customization) - Base
Manjaro (same as arch but low weigth) - Arch based
Tiny core Linux (for revive your stone pc) - Base
POP!_Os (similar to Windows and for home use) - Debian based

After choosing a Distro, you need learn how to use it, people think that to install a program you need turn to a Hacker and use a lot of commands but almost every modern Distro have a app store or have simple commands, like, in Debian based distros, you can only use in terminal :

sudo apt install program-name

Sudo is for root, apt is the Debian repository installer program and the program name, and you can add "-y" for auto confirm everything, but, some Distros like Arch you use a different command, like in Arch you use :

pacman -S package-name1 package-name2 ...

If you don't know which command use, you can ask chat gpt asking which system you use and how to use it.

Linux is totally open source, so, you can change everything in your pc like Layout, Render, Sounds, Root password, Cursor & Theme and etc.

If you need more help, im free and glad if you ask me on comments <3

My first library for C language

Leonardo Pinezi — Tue, 29 Apr 2025 19:49:06 +0000

PS. Sorry for my poor english, im from Brazil :D

Recently i just started learning C & C++ and i just love it, C++ it's incredible with strings and have good functions, but C... just broke my legs.

So i just started to create my own library for strings manipulation and essentials functions like indexOf, startsWith, substring, input, trim and etc, and i've made it well, it's on GitHub right now and you all can see and use it, have 2 contributions and im very happy with it.

Take a look : Essentials-C