Projects and notes — biosignal hardware, embedded systems, fencing electronics and home automation.https://tiagobolanos.com/https://tiagobolanos.com/notes/starting-this-site/https://tiagobolanos.com/notes/starting-this-site/Why there's finally something here, and what I plan to put on it.Sat, 05 Sep 2026 00:00:00 GMTnotemetahttps://tiagobolanos.com/projects/cloud-umbrella-holder/https://tiagobolanos.com/projects/cloud-umbrella-holder/A printed cloud that clips over a door frame so the umbrella hangs beneath it like rain. No fixings, no holes, one joke.Sun, 01 Jun 2025 00:00:00 GMTproject3d-printingdesignhomehttps://tiagobolanos.com/projects/esphome-control-board/https://tiagobolanos.com/projects/esphome-control-board/A six-key panel with a PIR sensor, buzzer and OLED, mounted under the desk. Custom PCB, printed keycaps, wired into Home Assistant.Sat, 01 Feb 2025 00:00:00 GMTprojectesphomehome-automationpcb3d-printinghttps://tiagobolanos.com/projects/aac-input-devices/https://tiagobolanos.com/projects/aac-input-devices/A family of prototypes — a brow headband, EOG glasses, and a finger-click keyboard — giving people with ALS a way to type or trigger actions when speech and hand control are gone.Wed, 01 Jan 2025 00:00:00 GMTprojectwearableeogemgaccessibilityblehttps://tiagobolanos.com/projects/el-bracer/https://tiagobolanos.com/projects/el-bracer/A forearm-worn device that reads EMG and motion, classifies it on-device, and streams the result to a phone. Many iterations, three radios, one very patient enclosure design.Wed, 01 Jan 2025 00:00:00 GMTprojectwearableemgfirmwareblehttps://tiagobolanos.com/projects/fencing-test-box/https://tiagobolanos.com/projects/fencing-test-box/A bench box for the armory — plug in a blade or a body wire, get a red or a green light. Built so a fault takes seconds to find instead of a whole evening.Wed, 01 Jan 2025 00:00:00 GMTprojectfencingarmorytest-equipment3d-printinghttps://tiagobolanos.com/projects/nfc-music-tags/https://tiagobolanos.com/projects/nfc-music-tags/Laser-engraved wooden tags with an NFC sticker on the back. Tap one on the reader and that record plays — a physical shortcut to a streaming library.Wed, 01 Jan 2025 00:00:00 GMTprojectnfcesphomehome-automationlaserhomehttps://tiagobolanos.com/projects/um-botao/https://tiagobolanos.com/projects/um-botao/One button in a laser-cut box. The name is the whole specification.Wed, 01 Jan 2025 00:00:00 GMTprojectlaser3d-printingesphomehttps://tiagobolanos.com/projects/ecg-phone-case/https://tiagobolanos.com/projects/ecg-phone-case/A smartphone case that measures a single-lead ECG through printed electrodes, built to test whether everyday objects can do opportunistic heart-health sensing.Thu, 01 Jun 2023 00:00:00 GMTprojectbiosignalsecgpcb3d-printinghttps://tiagobolanos.com/projects/fencing-emg-biofeedback/https://tiagobolanos.com/projects/fencing-emg-biofeedback/A forearm wearable wired to an épée that tells a fencer when they're gripping too hard during a hit — where biosignals meet my other sport.Sat, 01 Jan 2022 00:00:00 GMTprojectfencingemgwearablebiosignals