Projects

I created several interesting projects in the last years. Browse the list below and get inspiration to build something new.

Three Ways to Integrate LED Light Into the Modular Lantern

I tested three inexpensive, easy methods to add LED lighting to my modular 3D‑printed lantern using USB power: reused LED modules, short 5V strips, and WS2812B RGB with a microcontroller. I share parts lists, soldering tips, diffuser advice, and firmware steps—read on for step‑by‑step instructions and printable models.

The 3D Printed Modular Lantern

I designed a modular 19th‑century‑style lantern you can 3D print as a candlelight or expand into an LED street‑lamp stand. Read on for my glue‑free assembly, colour‑layer printing tips, and stand options — or jump to the Printables page for downloads and print instructions.

Build a Sustainable Refillable Active Coal Filter

I show how I built a refillable replacement for the Philips FY3432 active coal filter using 3D‑printed PLA parts, mesh, M3 insets and epoxy. If you want a lower‑waste workshop air filter and practical assembly steps, read the full guide — I cover materials, print files and tips.

Logic Gates Puzzles

I've compiled every logic-gate puzzle I've published so far into one list to help you find and revisit them easily. The page includes puzzles of varying difficulty and brief notes; if a block looks missing, it's a shortcode issue — please explore the full post to try the puzzles and share feedback.

How to Create a Large 3D Printed Artwork

I built a 100×80cm 3D‑printed artwork and walk through the technical steps I used: preparing mathematical height data, generating Z‑maps, slicing into printable tiles with Blender and PrusaSlicer, and assembling and painting the final piece. If you're curious about the scripts and workflow, read the full tutorial.

Adafruit PowerBoost 1000C Enclosure (LR2165)

I designed a simple three-part 3D printed enclosure for the Adafruit PowerBoost 1000C and up to a 1200mAh LiPo. In this post I share the print files, component list, and step-by-step assembly tips to convert the board into a safe portable power pack — please read on if you'd like to build one.

19" Rack Fan Controller [1/2]

I migrated several servers into a compact 19-inch rack and reworked my Arduino Uno fan controller to fit a 1U RND enclosure. I show choosing the case, adding a rotary encoder and filter circuits, testing signals, and 3D-printing panels. Read the full post for STL files and build notes.

Let's Print a Cat/Pet Feeding Device

I built a 3D-printed cat/pet feeder and documented every step across seven posts: printing the gearbox, assembling parts, crafting the enclosure, and adding electronics and a sensor board. If you want to follow the process or reproduce the device, read the full build series for parts, tips, and notes.

Quick 4h Build – PID Fan Controller

I built a PID-controlled fan and temperature controller for my printer enclosure in about four hours using an Adafruit Feather, DHT22, OLED, MOSFET, and a PWM fan. I walk through printing the case, wiring, firmware setup, and assembly—read on if you'd like to build one yourself.

Simple Box with Lid for 3D-Print

I designed a simple, sturdy box with a lid optimized for 3D printing and shared free STL files and print settings. I’ll show photos of real prints, recommend PETG/PLA settings, and include multiple sizes so you can test or use them. Please read the full post and download the samples.

Storage Boxes System for 3D Print

I designed a stackable, FFF-optimized storage box system for 3D printing, focusing on reliable prints, rail grids, stabilizing profiles and a dual-label setup. A free starter set is on Printables and a full set is in my shop. Read the full post to see details, photos and downloads.

Candlelight Effect

I built a compact Neopixel-based candlelight decoration with a DS3231 RTC and share the schematic, firmware, and build tips here. It's best placed behind a screen or in a jar. Read the full post for parts, assembly photos, and configuration notes to recreate it yourself.

Tiny Particle Sensor Node with Decorative Case

I guide you through building a compact particle sensor node using a Raspberry Pi Zero W and a minimal custom shield, with published Gerbers, STL files and example code. I keep the design simple and extendable—if you'd like to build your own networked air-quality node, read the full post for parts, assembly and setup.

How to Automate the Turn-On Time of a Deco Light

I wanted my winter decoration to switch on at dusk without constant adjustments, so I built a simple low-voltage controller using a P-channel MOSFET, a microcontroller and an ambient light sensor. I walk through my design choices, sealing for outdoor use and programming tips—read on if you'd like to build one too.

Snowflake Decoration

I built the Snowflake Decoration to connect small snowflake boards—each with a microcontroller and 19 bright white LEDs—into a synchronized strand. I cover soldering, programming, wiring, firmware, a simulator, and buying options. If you're curious to build or customize one, please read the full guide.

Snowflake Power Converter

I built a simple USB-to-3.3V power converter for my snowflake decoration using a Traco TSR2-2433 and a laser-cut acrylic case with glow-in-the-dark engravings. I'll walk through the board, Fusion360/Eagle workflow, laser cutting and painting - read on if you want the files and build notes.

Cat Feeder Device (Quick Build)

I built a simple, single-portion programmable cat feeder in about four days using rapid prototyping. I describe the Fusion360 sizing, plywood shell, servo mechanism, electronics, and the issues I encountered with breakout boards. If you're curious, read the full post for parts list, wiring and source code.

How to Design a Cheap Plant Watering Sensor (Part 1)

I walked through designing a cheap capacitive plant watering sensor, from goals and measurement options to component selection and early prototypes. I explain why I chose a CR2032‑powered op‑amp oscillator, ATtiny MCU and low‑power timer. If you’re curious, read the full post for details and test results.

Five Light Spheres

I built a quiet winter decoration from five IKEA-style spheres and NeoPixels. In this guide I share the parts list, step-by-step assembly, wiring and controller tips, plus the software on GitHub so you can customize the color blends. Please read the full tutorial for photos and code.

Boldport Project “PissOff”

I walk you through the PissOff project's firmware: a compact C++ wrapper for the MKE04 MCU, peripheral abstractions, SD card audio playback, IR detector logic, maintenance-mode commands and how to prepare an SD image with your own sounds. Please read the full post for setup steps and examples.

Fan Controller

I built a quiet, configurable fan controller with an Arduino Uno, two DHT22 temperature sensors, PWM-controlled 12V PC fans and a simple PID loop. I describe the hardware, wiring, Adafruit shields, and logging setup — with schematics and code on GitHub. Read the full post for parts and instructions.

Outmoded Sequencer (Part 1)

I built a humble, microcontroller-free 8×8 music sequencer prototype using LM555 timers, a CD4022 counter and MOSFET switches. In this post I explain the beat generator, matrix wiring, tuning and speaker driver, with photos and a parts list. If it sounds interesting, please read the full article.

Table Light

I walk you through a short, budget-friendly tutorial to make a simple, attractive table light using an IKEA candle holder, a NeoPixel ring, an Adafruit Trinket and common tools. If you like hands-on projects, please read the full guide for parts, wiring, code and step-by-step photos.

Data Logger Deluxe

I began this Data Logger Deluxe to test whether sealed boxes can protect documents in my humid root cellar. I'll describe prototyping, a minimal sensor-only build, and the final unit with display, capacitive keypad, and wireless charging. If you're curious, please read the full project for details.

Data Logger

I built a simple data logger to test whether sealed boxes keep my documents safe in a humid root cellar. This guide outlines the minimal and simple builds, parts lists, and basic software so you can try the test yourself. Please read the full post for the overview and step-by-step instructions.

Lucky World – A jump'n'run game for MeggyJr RGB

I've released Lucky World, a compact jump'n'run for the MeggyJr RGB featuring an intro, 16+ levels, secrets and an end scene. I squeezed it into ATmega328P limits and shared the sources under GPLv2. If you're curious, please read on for downloads, requirements, and play instructions.

Xmas Decoration

I walk you through a simple, low-cost project to make color-changing Xmas spheres using NeoPixels, an Arduino Uno and folded paper strips. I share parts, assembly photos, wiring and code so you can recreate or gift them. Read on for step-by-step instructions and the GitHub code.

Cat Protector

I built a compact device that detects motion on protected surfaces and plays my recorded phrases to gently deter my cat. The documentation covers prototypes, hardware, and software (SD card, DAC, audio playback, sensors). If you’re curious or want to build one, read the full guide for step-by-step details.