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Alvaro Barcellos

I'm a curious with some skills

Rio de Janeiro, Brasil
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11 Followers
12 Following
3 Projects
11 Likes
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

300
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A more generic eeprom programmer using Arduinos.
Project Owner Contributor

eepromgrammer

alvaro-barcellosAlvaro Barcellos

101
1
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2
A single charlieplexing mixed red, green and blue minimal leds lights for Christmas.
Project Owner Contributor

XmasLeds

alvaro-barcellosAlvaro Barcellos

74hc00d

some cpus diy of 74hc logic gates

Curated by Alvaro Barcellos

31
4

65c02d

Projects with 6502, 6551, 6522, alike chips

Curated by Alvaro Barcellos

4
1
25.8k
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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

7.6k
62
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6502 based learning in a familiar form factor
Project Owner Contributor

65uino

anders-nielsenAnders Nielsen

5.9k
53
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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

4.7k
22
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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

3.8k
22
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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

3.7k
34
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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

2.8k
27
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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

2.7k
27
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EPROM programmer too expensive? This isn't!
Project Owner Contributor

Relatively Universal ROM Programmer

anders-nielsenAnders Nielsen

2.5k
17
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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

1.4k
7
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The Electronic Die of the Future
Project Owner Contributor

Generative AI on a Microcontroller

timTim

1.4k
18
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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

1.3k
123
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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

1.2k
195
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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

580
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kinetic sound and light sculpture
Project Owner Contributor

intermittent luminal phase

eirik-brandalEirik Brandal

412
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Simple 70 switches keyboard optimized for DIY assembly
Project Owner Contributor

Kailh choc Low Profile Ortholinear keyboard 14x5

bobriciusbobricius

218
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8
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Mechanical keyboard with led ws2812b mini(3535)...
Project Owner Contributor

Mechanical keyboard

iloilo

173
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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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Eric Hertz wrote 05/12/2017 at 00:45 • point

Howdy! Thanks for the skull/follow!

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ActualDragon wrote 02/14/2017 at 17:14 • point

yo dude, i've never really done this, so i might as well start. thanks for the skull man

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Patrick Van Oosterwijck wrote 11/28/2016 at 16:48 • point

Thank you for following my #LiFePO4wered/18650 and #LiFePO4wered/Solar1 projects. :)

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Tom Meehan wrote 07/02/2016 at 05:08 • point

Thank you for following my project https://hackaday.io/project/10865-universal-glucometer

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Hari Wiguna wrote 05/18/2016 at 01:17 • point

Thank you for liking one of my projects!

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danjovic wrote 12/11/2015 at 14:49 • point

Obrigado por seguir o #Key Pass!

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deʃhipu wrote 09/29/2015 at 18:58 • point

Thanks for the follows! I see you are particularly interested in robots?

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Alvaro Barcellos wrote 09/30/2015 at 13:46 • point

Yes, simple ones and mind minimal ones,

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