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Alvaro Barcellos

I'm a curious with some skills

Rio de Janeiro, Brasil
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3 Projects
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alvaro-barcellos
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This user joined on 04/04/2014.

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A minimal DIY 8-bit CPU made with TTL chips, to perform native brainfu*k language, extended to use three sequential access tapes.
Project Owner Contributor

Jelly

alvaro-barcellosAlvaro Barcellos

281
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A more generic eeprom programmer using Arduinos.
Project Owner Contributor

eepromgrammer

alvaro-barcellosAlvaro Barcellos

101
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A single charlieplexing mixed red, green and blue minimal leds lights for Christmas.
Project Owner Contributor

XmasLeds

alvaro-barcellosAlvaro Barcellos

65c02d

Projects with 6502, 6551, 6522, alike chips

Curated by Alvaro Barcellos

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1

74hc00d

some cpus diy of 74hc logic gates

Curated by Alvaro Barcellos

31
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21.3k
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Lowering the cost of Refreshable Braille Cells by using Electromagnetic Cam Actuators & 3D Printing
Project Owner Contributor

Electromechanical Refreshable Braille Module

vijayVijay

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6502 based learning in a familiar form factor
Project Owner Contributor

65uino

anders-nielsenAnders Nielsen

5.3k
51
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A very compact, very inexpensive, very DIYable, very precise little CNC mill. This one uses 3d printed parts.
Project Owner Contributor

Minamil 3dp: another minimal CNC mill

paul-mcclayPaul McClay

4.4k
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In this project, I built a very simple 4 bit RISC CPU. *Sponsored by PCBway
Project Owner Contributor

The simplest 4-bit RISC CPU

marsianin245Marsianin245

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A ch552g powered, single chip, ultra low cost macrokey keypad, compatible with Arduino IDE
Project Owner Contributor

DIY $3 Single Chip Macro Keypad From Scratch

tobychuitobychui

3k
25
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This is the oldest PCB in my collection, acquired from a scrap sale at an old NASA test stand. What did it do?
Project Owner Contributor

Reverse Engineering an Apollo-Era Circuit Card

skyhawksonSkyhawkson

2.9k
22
5
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Retro computer built from TTL, with 6502 and Z80 instruction set. Includes video system.
Project Owner Contributor

Isetta TTL computer

roelhroelh

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Guatemala's first satellite, Quetzal-1, operated for 211 days in-orbit in 2020. Now, we want to make its design open to everyone!
Project Owner Contributor

Open Sourcing the Design for the Quetzal-1 CubeSat

danalvarezdanalvarez

2.5k
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Plugging modules in modified prototype boards allows an affordable and flexible analog computer system with unusual features
Project Owner Contributor

Flexible Analog Computer

rainer-glaschickRainer Glaschick

1.3k
17
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Lu.i is an electronic neuron circuit mimicking and illustrating the basic dynamics of real, biological neurons.
Project Owner Contributor

Lu.i – educational neuron PCB

sebastian-billaudelleSebastian Billaudelle

1.2k
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The Electronic Die of the Future
Project Owner Contributor

Generative AI on a Microcontroller

timTim

1.1k
186
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A modular and expandable 30MHz+ overclocked 6502 computer design using through-hole/PDIP parts
Project Owner Contributor

Fast PDIP 6502 computer

george-footGeorge Foot

1.1k
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Modular open-source microphone array for the development of acoustic camera, direction of arrival and beamforming algorithm exploration
Project Owner Contributor

Sesenta: Open source tileable acoustic camera

andrs-felipe-caldern-de-restrepoAndrés Felipe Calderón de Restrepo

756
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EPROM programmer too expensive? This isn't!
Project Owner Contributor

Relatively Universal ROM Programmer

anders-nielsenAnders Nielsen

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kinetic sound and light sculpture
Project Owner Contributor

intermittent luminal phase

eirik-brandalEirik Brandal

389
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Simple 70 switches keyboard optimized for DIY assembly
Project Owner Contributor

Kailh choc Low Profile Ortholinear keyboard 14x5

bobriciusbobricius

207
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Mechanical keyboard with led ws2812b mini(3535)...
Project Owner Contributor

Mechanical keyboard

iloilo

145
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An expansion of Albert Paul Malvino's and Ben Eater's SAP-1 to directly execute 6502 machine code
Project Owner Contributor

TTL 6502 based on the SAP-1 Architecture

drmatthewregandrmatthewregan

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Anders Nielsen wrote 09/15/2023 at 06:33 • point

Thank you for following my #Relatively Universal ROM Programmer !

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Anders Nielsen wrote 05/11/2023 at 13:56 • point

Thank you for liking and following my #65uino project!

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Mitsuru Yamada wrote 01/20/2023 at 01:23 • point

Thank you for following my #Prehistory of my homemade PERSEUS computers! It has been a long road so far.

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euchcat wrote 08/31/2022 at 20:30 • point

Hi! Thank you for following my list #TTL Hacks

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Anders Nielsen wrote 08/03/2022 at 21:37 • point

Thank you for liking my #Simple Universal Modem!

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Dusan Petrovic wrote 07/14/2022 at 12:41 • point

Hi @barcellos.alvaro - Thank you for following the #Homebrew CPU!

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Ozz wrote 01/08/2021 at 19:29 • point

thanks for following my https://hackaday.io/project/176544-fishbot project .

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kristina panos wrote 01/04/2021 at 16:47 • point

Hello Barcellos and thank you for liking my #practice backpack project!

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Michael Gardi wrote 11/28/2020 at 18:24 • point

Thank you for following my TMD-2: Turing Machine Demonstrator Mark 2 project.

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Mitsuru Yamada wrote 11/26/2020 at 04:52 • point

Thanks for watching and following my project #6502 standalone computer !

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Thomas wrote 11/24/2020 at 19:07 • point

Hi, thanks for the follow! See you at Forth2020!

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Dr. Cockroach wrote 10/15/2018 at 19:40 • point

Good afternoon and thanks for following #Light Logic  :-)

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Josh Starnes wrote 08/07/2018 at 18:55 • point

Thankyou for the follow, be sure to skull anything you like :)
https://hackaday.io/project/135292-ir-uv-invisible-qr-code-navigation-robotics

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Vittorio Loschiavo wrote 08/05/2018 at 04:34 • point

Hi Alvaro, thanks for following my projetc https://hackaday.io/project/87345-mini-vertical-wind-generator-3d-printed

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roelh wrote 07/24/2018 at 20:28 • point

Hi Barcellos, thanks for following the https://hackaday.com/2018/04/18/the-one-transistor-flip-flop/ !

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open-plc-com wrote 06/15/2018 at 15:38 • point

Thanks for following my Using "Blue Pill" STM32F103C8T6 as ST-Link project!

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Kris Winer wrote 05/02/2018 at 21:48 • point

Thanks for following my $25 Spectrometer project!

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Patrick Van Oosterwijck wrote 04/03/2018 at 15:42 • point

Thanks for following my #LiFePO4wered/Pi project!  You might also be interested in following my next generation #LiFePO4wered/Pi+ project since most new development will take place there. :)

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G.Vignesh wrote 07/04/2017 at 02:18 • point

Thanks for the follow!

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Dennis wrote 07/03/2017 at 20:09 • point

Thanks for following my project InspectorBot!

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