Part 2 of my Halloween animatronic skull: servo easing for predator-like motion on a Raspberry Pi RP2040, and a 24 GHz radar that sees through plastic to track you. Code on GitHub.
Author: drjonea
This Skull Watches You, and There’s No Camera Inside
An empty Halloween skull that turns to follow you round the room, with glowing eyes that redden as you get closer. No camera, no PIR. Part 1: how I built the eyes on a Raspberry Pi RP2040.
🌞 July Update — Recovering from Event Season
Event season hit hard this year. Maker Central, Evolve26, Hardware Pioneers… all incredible, all exhausting, and all packed with inspiration. Add in a wave of new Pico ecosystem releases, and July arrived before I even noticed.
May Newsletter — Event Season Is Here!
I tried to let AI do the maths… it couldn’t. So I built a 3‑DoF Stewart Platform myself — and it works beautifully. Full story inside.
🚀 A Busy Season of Builds, Releases & Events
A new Droid project always means chaos — the good kind.
ReXP1 The Feature that Nealy Killed Me
ReXP1, my Star‑Wars‑inspired droid, has been one of the most fun builds I’ve ever tackled — but one capability has driven me up the wall: tilt.
🔢 Celebrating Pi Day With a Live Build!
Saturday 14 March is, of course, Pi Day (3.14), and this year I’m doing something completely different on the livestream: a Live Build over on my channel. But this won’t be a Blue Peter–style “here’s one I made earlier” situation. It’s not even a rebuild of a project I’ve already done. This is going to … Continue reading 🔢 Celebrating Pi Day With a Live Build!
Welcome to 2026 — My First Update of the Year
A fresh year, a fresh batch of projects, tools, and community happenings. Plenty has been going on, so let’s dive in.
Building My Projects from Repo
A guide to building my projects based on the GitHub Repos.
November 2025: Getting Cozy with Pico and Projects
Welcome back to the latest updates from my world of embedded systems, maker culture, and remix-friendly innovation.