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danjovic

DIYer, reenignE esreveR

Hack-a-çapava, SP, Brasil

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This user joined on 02/28/2014.

My Projects

Keychain USB multiple password manager/generator/injector

Key Pass

Pseudo Random VGA blinking lights generator

VGA Blinking Lights

Customisable USB adapter for arcade controls.

AVeRCADE

AVR based chess computer

Chess Mate

Version 2 of PS/2 keyboard adapter for Zeddies

Tek V2

The 2018 Hackaday Prize

Portable NTSC test pattern generator

32 Shades of Grey

View all 69 projects

My Pages

3D Case for ESP32-S2 CH32V003 Programmer
09/24/2025 at 10:32 • 0 comments

Case for the ESP32-S2 CH32V003 programmer. WIP, designed in LibreCad and modelled with Freecad.
Ye olde DIY Digispark
09/06/2025 at 12:38 • 0 comments

Found this old DIY board that I have built probably a decade ago. Time runs fast!
The wiring is done using enameled wire, thoroughly inspired by elm-chan's designs, but without the same aesthetics, though.
ESP32-S2 CH32V003 Programmer (esp32s2-funprog)
08/15/2025 at 11:28 • 0 comments

This programmer was built using an ESP32S2 board that I have laying around for some time. The project is part of ch32fun by Charles clnohr.
I decided to build it because my WCH-LinkE didn't worked out of the box with the minichlink on a Windows 11 machine.

Link to the project: https://github.com/cnlohr/esp32s2-cookbook/tree/master/ch32v003programmer

View all 68 pages

Things I've Built

Chez Le Chien

Apartment Houses for my Dachshunds

Sensor Shield

Arduino Shield for interaction with MIT's Scratch. Provides the same functionality of PicoBoard

Nunchucks for Atari

Adapter board for playing Atari games with a Nunchuck controller. Based on a PIC micro.

Nunchuck in MSX

Nunchuck Adapter for MSX computers using bitbanged I2C directly on the Joystick port

Projects I Like & Follow

The 2017 Hackaday Prize

Pi Zero-based open-source mobile phone (that you can assemble for 50$ in parts)

ZeroPhone - a Raspberry Pi smartphone

KaRadio A fully featured wifi web radio player with only low cost boards. with or without a vs1053 board

WiFi Webradio on ESP8266 or ESP32

jean-pierre-cocatrix Jean-Pierre Cocatrix

Hackaday Prize 2019

Homemade 8MHz Z80 SBC, 128kB banked RAM, RTC, SD (HD emulation), Basic and Forth interpreter, CP/M 2.2 and 3, UCSD Pascal, Fuzix and more...

Z80-MBC2: a 4 ICs homebrew Z80 computer

Official Hackaday Prize Entry

A BIG Gas Powered Quadcopter

Goliath - A Gas Powered Quadcopter

peter-mccloud Peter McCloud

Hackaday Prize 2019

High Power, High Performance 400V 300A 100+kW Motor Controller fully compatible with VESC®

Axiom: 100+kW Motor Controller

Always jealous of people who could afford big Nixie Tubes, I rolled my own alternative with WS2812Bs and laser cutting!

"Lixie", an LED alternative to the Nixie Tube

lixie-labs Lixie Labs

The 2016 Hackaday Prize

Mechaduino is an affordable, open-source, industrial servo motor. Position, torque, velocity, and custom modes. Arduino compatible.

Mechaduino

The 2017 Hackaday Prize

No iron, no cry! Build a mini 4MHz Z80 64kB RAM system with Basic and Forth interpreters, CP/M 2.2, QP/M 2.71, Assembler and C toolchains

A 4$, 4ICs, Z80 homemade computer on breadboard

The 2018 Hackaday Prize

A smaller and cheaper open source brushless motor

PCB Motor

carl-bugeja Carl Bugeja

A soldering station based on the easy to source Hakko 907 soldering iron, which is a 24V 50W soldering iron with integrated thermistor.

Hakko 907 based Soldering Station

Software to create your own Knit-like string pictures.

DIY Knit Portrait

The Scrapyard and Arduino make a great combination!

Real Scania Truck Home Simulator

jeroen-van-der-velden Jeroen van der Velden

The 2017 Hackaday Prize

Just because! A home computer without microprocessor

Gigatron TTL microcomputer

marcel-van-kervinck Marcel van Kervinck

Hackaday Prize 2020

Multiplayer Bluetooth controllers adapter for retro video game consoles

BlueRetro

jacques-gagnon Jacques Gagnon

Hackaday Prize 2020

Freedom of communication without borders, operators, networks, fees ! Your own network, your own rules ! Long range radio communicators

ARMAWATCH & ARMACHAT - long range radio messengers

Turn cheap modules from AliExpress into interactive development kits!

eForth for cheap STM8S gadgets

7 segment clock

EPTAORA

ekaggrat-singh-kalsi ekaggrat singh kalsi

Electronic Curve tracer for measure and compare components on circuit boards

Microcontroller based curve tracer

View all

Bits

Ken Yap wrote 07/17/2025 at 09:23

Thanks for liking #A Germanium 1 Hz round tuit All the best for your #Valvano Clock too.

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Ken Yap wrote 08/10/2024 at 04:40

Thanks for liking #Putting 50 year old Motorola amplifier ICs to work !

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Michael Gardi wrote 02/10/2024 at 10:16

Thanks for liking my Commodore CHESSmate Reproduction project. You have some great projects! Obviously your CHESSmate is especially interesting to me. Mike

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Reinaldo de Sales Flamino wrote 11/22/2022 at 22:12

Salve Mestre, dá uma olhada nesse projeto. Bem legal.

RetroVGA - Raspbery Pico multi retro computer | Hackaday.io

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danjovic wrote 11/23/2022 at 00:10

Salve Flames! Esse projeto é bem da hora mesmo!

Grande abraço!!!

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Ken Yap wrote 11/18/2022 at 02:33

Thanks for liking #Restoring a Beckman neon display clock !

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RunnerPack wrote 10/20/2022 at 14:54

Just based on the other projects you follow – let alone your own excellent projects – I'm honored that you would follow my humble keyboard hack! Thanks!

I also echo tyler's comment below about your tag-line.

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danjovic wrote 10/21/2022 at 21:06

You welcome!! And thank you for liking my projects :)

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ty wrote 03/21/2022 at 22:34

reenignE esreveR. That's gold.

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Michael Gardi wrote 09/17/2021 at 22:48

Thanks for your interest in my 2:5 Scale KENBAK-1 Personal Computer Reproduction and Sol-20 Reproduction projects.

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Ken Yap wrote 09/10/2021 at 23:02

Thanks for liking #89C52 clock board !

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Igor wrote 08/31/2021 at 14:42

Thank you for liking my #CRISS CP/M 8-bit Homebrew DIY Computer (AVR based) project!

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Ken Yap wrote 08/30/2021 at 10:16

Thanks, cool cat @danjovic for liking #6 segments suffice and #TTL binary clock !

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agp.cooper wrote 07/07/2021 at 04:30

Hi , thanks for following some of my projects. I think I am starting to "get it" with CP/M. Version 3 should let me compile C on board. Regards AlanX

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Michael Gardi wrote 02/12/2021 at 16:17

Thank you for your interest in my 2:3 Scale VT100 Terminal Reproduction project.

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kristina panos wrote 01/15/2021 at 20:43

Hello again and thank you for liking my #how I make masks project! :)

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kristina panos wrote 01/10/2021 at 01:30

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

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Mitsuru Yamada wrote 12/09/2020 at 01:15

Thank you for linking my #6802 Serial Terminal !

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Ken Yap wrote 10/03/2020 at 11:39

Thanks for liking #8042 clock !

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danjovic wrote 10/03/2020 at 20:30

You welcome! Nice to see the chip repurposed.

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Dr. Cockroach wrote 07/06/2020 at 11:38

Good morning once again and thank you for liking my #LLTP - Light Logic Transistorless Processor

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Dr. Cockroach wrote 03/06/2020 at 11:53

Good morning and once again, thanks for the like, this time for #Shortwave Crystal Radio - A blast from my past.

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roelh wrote 01/29/2020 at 12:46

Hi Danjovic, thanks for liking the #Kobold K2 - RISC TTL Computer !

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