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    Serving Middle TN for over 20 yrs.

    N2 TEA Laser Build – Part 4: Circuit & Safety Wiring

    Circuit & Safety Wiring. The most critical step now is the wiring. We need to complete the Blumlein circuit and, most importantly, prepare the wiring for the Safety that makes this kit more suitable for classrooms, etc… Triple-Threat Safety Imperative: READ THIS FIRSTTHIS PROJECT INVOLVES THREE DISTINCT LETHAL/HARMFUL HAZARDS. DO NOT ATTEMPT REPLICATION WITHOUT ADVANCED HIGH-VOLTAGE EXPERIENCE AND PROPER VENTILATION.1.  Lethal High Voltage: The  circuit is lethal. NEVER touch the circuit when power is applied. All components must be contained within a grounded, non-conductive enclosure with safety interlocks before operation.2.  Harmful UV Radiation: The laser emits deep ultraviolet () light (around ). This radiation is invisible, damaging to the retina, and can cause skin burns. NEVER look into the beam or at the spark without certified UV-blocking eye protection.3.  Toxic Ozone Production: The high-energy discharge generates ozone () gas (a toxic air pollutant). Operation must be limited to short bursts and always performed in a well-ventilated area or under forced exhaust. Classroom Use: Replication in any educational setting requires direct, professional supervision and a fully interlocked safety enclosure system.

    N2 TEA Laser Build – Part 2: The 10 kV Concept

    N2 TEA Laser Build – Part 2: The 10 kV Concept – Okay, I’m ready to pull back the curtain! I’m building a Nitrogen (N2) TEA (Transversely Excited Atmospheric) Laser. This is a high-performance physics experiment that relies on a single principle: speed. We use 10,000V to create an electrical pulse so fast it tricks the nitrogen gas (present in the open air, in this case) into emitting an invisible UV laser beam.. More here: https://techbravo.net/n2-tea-laser-build-part-2-the-10-kv-concept/

    N2 TEA Laser Build – Part 1: What Is That?

    The workbench is getting weird this week. (Yes, that’s my Thunder Laser engraver, I know, I know—it’s not supposed to be a workbench! 😅) This is the first in a series of posts where I break down the science and build a ‘Trophy-Worthy’ high-voltage device. I’ve got steel, copper, aluminum, magnets, switches, some wiring, etc..—but […]

    Reviving a Vintage Alarm with Meshtastic – Part 1: The Plan

    When my family and I moved into our new house, we found a legacy DSC Alarm Panel and its suite of wireless sensors already installed. Since the system was outdated, unmonitored, and completely disconnected from modern alert systems, I opted to remove it. However, the hardware itself—a testament to its vintage engineering—was robust and still functional. I decided that instead of tossing it, I would transform this robust, inherited system. This multi-part series isn’t just about cleaning up an old alarm; it’s about transforming it into an off-grid, resilient, and intelligent security guardian using the Meshtastic mesh networking protocol! My ultimate goal is to create a fully self-reliant, peer-to-peer notification system that can alert me even when the internet is down, power is out, or cellular networks are jammed. I am taking this abandoned, time-tested wireless DSC system and giving it a powerful, modern, digital voice.

    President Dwight D. CB Base Resto-Mod Part 3

    🔬 Part 3: Documentation and Cleanup Complete – The Final Blueprint (This post directly follows the investigative findings detailed in President Dwight D. CB Base Resto-Mod Part 2.) This post marks a crucial phase transition! We executed the Initial Restoration (Cleaning) and the rigorous Technical Investigation (Data Collection) using the equivalent schematics. We now have […]

    Thunder Odin Telemetry Project

    I came across Node-RED and wanted to see some of what it could do, so I plan on outfitting my Thunder Odin 32-60 with all kinds of sensors so I can monitor and interact with the laser in real-time. Then maybe I’ll explore what else it can do. I’ll update my progress here as time […]

    The Drawing Machine

    So I was looking at some 3D prints that the gradkid may like. I had some SG90 servos and various microcontroller/developer boards and I found this awesome design. I have most everything I need on hand, so this is perfect. And my grandson had seen this somewhere before and loves it. The designer has all […]

    The Flamethrower

    Intro Okay so this isn’t actually laser related (though I could add a red dot pointer to it i suppose!) but it involves high voltage, fire, and more… so the boys and I are going to build a flamethrower. We will go over legalities and use cases as well as best practices of design, build, […]

    The 4 Axis CNC Machining Center

    I picked up this Intelitek Expert Mill VMC-0600 with 4 axes, automatic tool changer, pneumatically actuated collet chuck, mister, touch probing, tool probing, mix and max limit switches on x, y, and z axes… and it runs a Beaglebones based Acorn board and CNC12 control software. I have experience with 3 axis gantry lasers, 3D […]

    Thunder Bolt Head Camera

    I had originally tested LightBurn’s Head Mount camera function on my Thunder Nova 35-80 and never got to test it fully. This was early on and was the v1.2 beta, more info on that implementation can be found in this Thunder Laser USA Knowledgebase Article: Head Mounted LightBurn Camera.   So I figured since LightBurn public release […]

    The Thunder Mug

    The thundermug is an Enerpac RC256 25 Ton 10,000 psi Single-Acting Hydraulic Ram with the guts and hydraulic fitting removed. The cylinder walls were pitted and gouged so it was taken out of service but is otherwise structurally sound. Thundermug loaded with 4 ounces of triple seven ffg and 1 pack of hamburger buns recorded […]

    My Passion For Noise

    When I was about 14 or 15, I got in to home audio because a neighborhood friend was a designer and audiophile of sorts. So most of the money I could scrape up went to HiFi Buys near the oil change place where I worked… and Crutchfield. I had so much stuff I don’t remember […]

    The Warbarge

    This is project “WARBARGE”. It is my 1994 Caprice Classic which was given to me by my late grandfather. This is NOT a police package but does have 240 amp alternator and a 990 amp battery run by an L99 power plant which is an LT1 with smaller stroke and bore. It does incorporate GPS […]

    The Air Cannon

    This is the Air Cannon. If you look closely you will notice many safety features like all pW rated PVC pipe & fittings, a 115psi safety valve, and large gauge. Minimum pW rating is 150psi. Maximum pW rating is 450psi. Most air cannons you see have holes drilled into them and threaded to accept NPT […]