HolyMicro

I'm thrilled to announce that after three years of dedicated development, and receiving FAA manufacturing approval in May 2025, the Absolute AoA System is now available TO YOU for purchase. I want to personally thank you for your trust, support, patience, and invaluable pilot-to-pilot input. The Final Product: Built on Pilot Demands The final instrument delivers on the features we discussed; integrating the most requested pilot inputs into one unified system: • Award-Winning Core: We were proud to learn at AirVenture that the fundamental theory we use—the advanced Pressure Ratio calculation—is the same method the EAA recently awarded as "the best" for AoA calculation. This validation of our core technology, from one pilot to another, means everything. • Audio-First Safety: Includes Multi-Frequency Tones at varying Pulse Rates (like Navy/Air Force systems) at different phases of flight. Hate displays; just follow the tones! • Precision Awareness: The Lift Reserve Percentage (LR%) display for immediate lift margin awareness. • Installation Simplicity: Flap Scanner Pod and HMI (Human to Machine Interface) are included to minimize installation effort and simplify setup and calibration. • Future-Proof: Seamless Over-the-Air (OTA) software updates to keep your unit current. Designed by pilots, for pilots. You can purchase directly at: https://holymicro.com/sky-voice-alert/absolute-aoa-system For questions, Mail to: info@holymicro.com

Thanks for your enthusiastic interest and continued patience as we finalize the launch of our Absolute Angle of Attack (AOA) system. We are incredibly excited to share a final project update and confirm the inclusion of several key features based on your valuable feedback. Feature Confirmations and User-Requested Implementations We have worked hard to incorporate your top requests, ensuring the final product meets the high standards required for critical flight instrumentation: • Effortless In-Flight Calibration: You asked for simple calibration, and we delivered. Our new Easy One-Point Calibration feature dramatically simplifies setting your Absolute Angle of Attack (AoA). While cruising, press Start, and when you hear the stall warning, press Stop. Get precision AoA data in 3 minutes, with zero hassle. • Custom Audio Tones: For enhanced safety and familiarity, we have implemented the user-requested tones mirroring military systems. The system now includes 400 Hz and 1600 Hz frequencies and pulse rates to clearly indicate different phases of flight, such as approach and critical AOA warnings, similar to Navy and Air Force standards. • Lift Reserve Display: Your request for clearer flight performance data has been met. The display now prominently features the Lift Reserve Remaining, providing pilots with intuitive, immediate visual feedback on the aerodynamic margin above stall. • Over-the-Air (OTA) Updates: For effortless maintenance and future enhancements, the system supports Over-the-Air (OTA) updates. You can easily perform all future software updates and system enhancements wirelessly, ensuring your AOA system always runs the latest features and firmware. Solution for Flap Position Sensing: The New AoA LiDAR Pod We heard the feedback from many owners, particularly those with twin-engine aircraft, regarding the challenge of finding a suitable mounting location near the flap area for LiDAR flap position detection. To solve this mounting constraint, we have designed and developed a dedicated solution: • New LiDAR Pod: This is a separate sensor housing crafted from aircraft-quality aluminum that can be mounted away from the main AOA probe. This pod is specifically designed to overcome placement issues on complex wing configurations. • Availability: This LiDAR Pod is ready for purchase now as an optional add-on. Please see the attached images for a detailed look at the final design. Thank you again for supporting this project. We look forward to delivering the most advanced AOA system available for General Aviation. More about Absolute AoA - Holy Micro!’s Absolute AoA System Receives FAA Certification AoA_LiDAR_POD.pdf

Holy Micro! LLC has added more reminders and enhanced smartphone like Bluetooth connectivity for the SkyVoice Alert 500 and SkyVoice Glassy Guide 400, helping pilots fly safer and easier by reducing cockpit workload and preventing gear-up landings. SkyVoice Alert 500 – Smarter Altimeter with Intelligent Algorithms The SkyVoice Alert LHA 500 combines LiDAR technology with next-generation algorithms and includes customizable reminders, Bluetooth connectivity, and a proximity-based gear warning system for improved safety during takeoff and landing. In its Advanced Mode, the system added more reminders, pilots can set additional reminders in AGL, MSL, and Run-Time categories; enhanced Bluetooth connectivity for seamless smartphone-like wireless pairing; and direct headset integration. Combined with an improved software algorithm featuring signal noise suppression and smoothing, these upgrades ensure more accurate altitude readings and timely alerts. This integrated setup allows pilots to receive real-time altitude announcements and safety reminders directly in their headsets, minimizing distractions and enhancing situational awareness throughout every phase of flight. Key Features of SkyVoice Alert 500: · LiDAR range of 590ft. · Continuous Gear warnings from 560ft until the Gear is down & locked. · Takeoff announcements from 10ft to 500 ft. · Landing announcements: 500ft to 1 ft. Expanded user selectable reminders: Check Gear, Checklist, LC GUMPS, Flaps, Speed, Clearance, Prop, Pump, Check Cabin Pressure, Check FF RPM OP MP, Check Fuel Flow, Check Power etc... · Run-time reminders: Check Tank, Check Carb Heat, Check FF RPM OP MP, Check Fuel etc… · GPS/MSL announcements with reminders from 18,000 ft to 500 ft, Reminders like Check Oxygen, IFR Altimeter, Clearance, Prop, Top of descent, Check Cabin Pressure, Check FF RPM OP MP, Check Fuel Flow, Check Power etc… · Bluetooth or wired connectivity SkyVoice Glassy Guide 400 RADAR Altimeter for Amphibians The SkyVoice Glassy Guide 400 is a RADAR-based Takeoff and Landing Height Announcer built specifically for seaplanes and amphibious aircraft. It provides accurate AGL readings up to 400 ft, even over glassy water, where depth perception is most difficult. In its Advanced Mode, the Glassy Guide 400 adds more reminders in AGL, MSL, and Run-Time, along with enhanced smartphone like Bluetooth pairing, giving pilots additional options for receiving altitude callouts and reminders. Key Features of the SkyVoice Glassy Guide 400: · Radar range of 400 ft. · Takeoff announcements from 50ft to 400 ft. · Landing announcements from 400 ft to 1 ft. · User selectable reminders, including Clearance, Check Gear, Checklist, Check Cabin Pressure, Check FF RPM OP MP, Check Fuel Flow, Check Power, Speed, Flaps, Pump, LC GUMPS, Gear Up for Water Landing, Prop etc… · Four customizable gear reminders · GPS/MSL announcements from 18,000 ft to 500 ft with user selectable reminders like IFR Altimeter, Check Oxygen, Clearance, Prop, Check Cabin Pressure, Check FF RPM OP MP, Check Fuel Flow, Check Power etc… · Run-time reminders: Check Tank, Check Carb Heat, Check FF RPM OP MP, Check Fuel etc… · Portable version available with rechargeable battery, Bluetooth connectivity, and the same internal hardware as the certified unit—ideal for testing before permanent installation. Holy Micro! LLC is redefining aviation safety with LiDAR and RADAR altimeters, Absolute AoA technology, and pilot-focused innovations.

Currently, the SkyVoice Glassy Guide 400 is designed for external mounting on an access panel or inspection plate. The system consists of two main components: The RADAR unit (HMR 400) is installed on the aircraft’s inspection plate or access panel, pointing downward. The SkyVoice unit is installed behind the instrument panel, out of sight. Since there’s no screen, it doesn’t need to be panel-mounted.

The SkyVoice Alert 1000ft is a LiDAR based system, so it only works over land, not in water. For seaplanes or amphibians, we have the SkyVoice Glassy Guide 400. It uses RADAR, works over both water and land, and has a range of 450 feet. Based on your selection, It can give altitude call-outs like: 400, 300, 200, 100, 70, 50, 40, 30, 20, 10, 5, 2, 1 feet You can also add reminders like: “Check Gear,” “Checklist,” “LC GUMPS,” “Flaps,” “Speed,” “Clearance,” “Prop,” and more. There’s a portable version too—Bluetooth and battery powered—great for testing before installing. For more details about Skyvoice Glassy Guide 400 : https://holymicro.com/sky-voice-alert/skyvoice-glassy-guide-400

HolyMicro, an aviation safety equipment manufacturer, has announced a major enhancement to its SkyVoice product line with the upcoming release of a new 1000ft range version of its popular SkyVoice Alert system. Building on the proven capabilities of the SkyVoice Alert 500, the extended-range version is designed to deliver heightened situational awareness for general aviation pilots during critical takeoff and landing operations. The current SkyVoice Alert 500 utilizes a 590ft range LiDAR to precisely measure Above Ground Level (AGL) and during takeoff and landing operations. This system provides crucial "Check Gear" warnings from 560ft AGL until the landing gear is down and locked. It featured proximity-based gear warning system. Pilots can customize audio announcements at various AGL altitudes, including 500, 400, 300, 200, and 100 feet, with the option to include personalized reminders. For a smooth and safe touchdown, additional precise callouts are available at 70, 50, 40, 30, 20, 10, 5, 2, and 1 AGL. The SkyVoice Alert 500 offers a comprehensive suite of customizable reminders, including: : Checklist, Check gear, Clearance, Flaps, LC GUMPS, Prop, Pump, Speed, Check FF RPM OP MP, Check Fuel Flow and Check Power. It also gives elapsed-time based reminders like Check Tank, Check Fuel, Check Carb Heat and Check FF RPM OP MP. All of HolyMicro’s aviation safety products—including the SkyVoice Alert, the SkyVoice Glassy Guide for seaplanes, and the Absolute AoA System—are FAA-approved under the NORSEE (Non-Required Safety Enhancing Equipment) program, making them eligible for use in a wide range of general aviation aircraft without complex certification hurdles. The SkyVoice Glassy Guide 400 is a RADAR-based Takeoff and Landing Height Announcer specifically designed for seaplanes and amphibious aircraft, delivering accurate AGL readings over both water and land. It provides a RADAR range of 450 feet and includes up to 4 gear reminders. The system offers the same customizable voice announcements and reminder features as the SkyVoice Alert 500. Portable version is also available—it connects via Bluetooth, runs on a rechargeable battery, and has the same internal hardware as the certified unit. It’s easy to test in different locations before doing a permanent install. The Absolute AoA System In response to the FAA's SAIB: 2024-07, this NewGen solution provides accurate Angle of Attack (AoA) for all phases of flight. Unlike traditional single-sensor differential pressure systems limited to near-stall warnings, the Absolute AoA System delivers reliable AoA information for climbing, cruising, and landing, unaffected by density altitude or weight/loading. It enables pilots to fly for all V speeds, including Best Glide (Vl/dmax) and Carson Cruise (Vcc).

What is Angle of attack? It is defined as the angle between the chord line of an airfoil and the direction of relative wind. Angle of Attack is related by a simple formula – Pitch Attitude + Angle of Incidence = Angle of Climb + Angle of Attack Importance of Angle of Attack Most of the airplane’s critical performance numbers are more closely related to angle of attack than to anything else. This is the most important point in understanding the concept of Angle of Attack. Many of the airplane’s critical performance numbers are really angle of attack numbers: • The stall occurs at a particular AoA. • The smallest power-off descent rate occurs at a particular AoA. • The best power-off glide ratio occurs at a particular AoA. • The recommended “approach speed” is really an angle of attack recommendation. • The best rate of climb occurs at a particular AoA. • The best angle of climb occurs at a particular AoA. Angle of Attack Systems Current differential pressure angle of attack systems for light general aviation aircraft concentrate on the low speed/high angle of attack regime. Typically, outside of this flight regime, these angle of attack systems are inaccurate. Hence, they are unusable for critical flight regimes other than the stall region. 1. How does it work? How is it different from others? FAA Approved Absolute AoA's Precision Pressure Sensing Technology 1) High-Resolution Pressure Measurement At 200 knots (343 ft/sec) under standard sea level conditions: • Dynamic pressure (q) at the forward/impact port: ~1 psi (6,900 pascals) Our high-accuracy sensor detects pressure changes as small as 1 pascal: • Resolution equivalent to 1/6,900th of 1 psi • Represents 0.05 ft/sec (0.03 knots) velocity sensitivity Why This Matters ✔ Unmatched Precision: Resolves aircraft speed changes as small as 0.03 knots ✔ Critical for Safety: Detects minute aerodynamic changes before they become hazardous ✔ Stable Calibration: Maintains accuracy across all flight conditions 2) Normalized vs. Differential Pressure – Why Two Sensors Matter All pressure sensors are differential—they measure pressure relative to a reference. Many AoA systems use only one sensor, claiming "differential pressure" output. However: • A single sensor provides only one pressure reading, making it difficult to establish a meaningful AoA relationship. • Most competitors do not disclose their sensor specs (manufacturer, accuracy, or resolution). Absolute AoA’s Solution: • Two high-quality, U.S.-made pressure sensors by T.E. Connectivity to independently measure pressure at forward port and 45° port. • Both measure pressure against a shared static reference (blue hose). • This dual-sensor approach ensures consistent, speed-independent AoA calculations Absolute AoA (Pressure Ratio) o Maintained near-consistent reading (1.92 → 1.98) o True AoA indication despite 45-knot speed reduction Single-sensor systems give speed-dependent values, good only at low speed & high angle of attack. Absolute AoA’s normalized ratio remains consistent regardless of airspeed—delivering true angle of attack. Why This Matters Independent of change in airspeed or air density—AoA stays accurate at any speed and any density altitude. Eliminates false warnings caused by speed variations or density altitude or weight. Superior engineering with dual high-precision sensors. In the following video, you can see how correlated Absolute AoA pressure reading is compared to differential pressure reading. Conclusion: • The Differential Pressure System is susceptible to ambiguity in AoA determination. • It functions acceptably in low-speed/high-AoA regions, making it suitable for stall warning but not reliable as an AoA indicator. 2) Why Absolute AoA’s Dual-Sensor System Matters for Pilots For the average GA pilot, Absolute AoA’s two-pressure-sensor design provides critical advantages over traditional AoA systems: 1) True Angle-of-Attack Awareness – At Any Speed • Absolute AoA warns you before exceeding critical AoA, regardless of airspeed. • Other AoA systems only alert you in slow flight, near their pre-calibrated speed—meaning you might miss early stall cues during maneuvering or unusual attitudes. 2) Fly Optimal Angles – Not Just Speeds • Label and calibrate key flight angles like: • Best Glide • Vx (Best Angle of Climb) • Vy (Best Rate of Climb) • Normal Cruise • Why angles matter more than speeds: • These angles stay constant, but the airspeed changes with weight, load, or density altitude. • A traditional airspeed-based system requires constant mental adjustments—Absolute AoA shows you the true aerodynamic state. • Calibration Stability in Absolute AoA • Once calibrated, your aircraft’s Angle of Attack (AoA) values remain constant—they do not change with: • Weight variations • Loading conditions • Density altitude shifts • Bank Angle How It Works During calibration, our Absolute AoA system: Captures each angle you fly. Map it to a corresponding pressure ratio (a unique aerodynamic fingerprint for that angle). This means: • Every calibrated angle is permanently tied to its specific pressure ratio. • The system does not require further recalibration for different flight conditions. Key Benefits ✔ Consistent performance – Your AoA readings stay accurate in all scenarios. ✔ One-time calibration – No need to further adjust for weight, loading, or altitude changes. ✔ Precision reliability – Pressure-ratio mapping ensures repeatable results. The Bottom Line • Stall prevention that works in all phases of flight, not just slow flight. • Fly precisely with angle-based references instead of memorizing speed charts. • Confidence in changing conditions—whether heavy, light, high, or hot. With Absolute AoA, you’re not just watching airspeed—you’re flying the wing. Traditional AoA Systems Fall Short Most other AoA systems have: ? No option to calibrate for different configuration ? None approved flap position inputs (extra wiring/sensors to flap switch or motor) ? Requires manual input from pilot increasing workload and memory dependence. Absolute AoA’s Breakthrough: Automatic Flap Detection Probe integrates LiDAR to scan your flaps in real time—no extra switches, wiring, or pilot input needed. When you lower flaps, the system: 1. Detects the exact position 2. Instantly loads the correct pre-calibrated AoA profile 3. Maintains precision stall warnings for that configuration Why It Matters • No missed stalls during configuration changes • No manual change when adjusting flaps • True set-and-forget safety that adapts as you fly Finally—an AoA system that thinks like a pilot. 3) Is the Absolute AoA Probe Heated? The probe does not come with a heating element nor is it part of our current certification, but your A&P may choose to add one. Before deciding, consider the probe’s design and mounting location: 1. Vertical Orientation – Unlike most AoA probes (which are horizontal or angled), the Absolute AoA probe is mounted vertically, with openings angled straight up. This prevents water from pooling, as any moisture drains away naturally. 2. Optimal Placement – While many AoA probes are installed near the leading edge, the Absolute AoA probe is recommended to be mounted farther back, closer to the wing’s center chord. This reduces exposure to ice and rain. Given these design advantages, heating may not be necessary—but the option remains available to your A&P if desired. 4) Why Choose the Optional 5- Watt 8 ohm DO-160 compliant Voice Range Speaker certified as part of the NORSEE approval with the Absolute AoA Kit from Holy Micro! LLC ? In normal operations, you shouldn't hear stall alerts often or at all—which makes it more critical that you must always hear them when they occur. The Problem With AUX Audio: Your aircraft's shared audio channels (radio, intercom, alerts) can: • Drown out stall warnings • Delay alerts due to priority conflicts • Mute completely during other transmissions The 5-Watt Speaker Advantage: ? Unmissable volume – Penetrates even noise-canceling headsets ? Dedicated alert channel – Never competes with other audio ? Simplified installation – No avionics shop required and no disturbance to your avionics stack/installation. Just connect to power (no complex audio panel wiring) 5) Displays & Presentation Options in Absolute AoA? Absolute AoA currently offer two display options, included in the package price. You may select your preferred model when placing an order: 1. Dashboard-Mounted Display : Designed for easy mounting on the cockpit dashboard. 2. 3 1/8" Round Instrument Panel Display : Fits into a standard round cutout in your instrument panel. Presentation (AoA Visualization Styles) The Presentation refers to how Angle of Attack (AoA) data is displayed/presented on the screen. Our software allows you to select from the following visualization styles: 1. Barmeter Presentation A classic, intuitive display using horizontal bars to indicate AoA. Widely used for decades in aviation. 2. Chevron Presentation Features dynamic chevron (∧/∨) symbols and center donut that shift with AoA changes. Offers clear visual cues for pitch adjustments and need to remember them. 3. Performance Presentation (New Feature) A modern "running tape" style that integrates: - Labeled calibration angles (user-defined for your aircraft). - Real-time airspeed data (pulled from Absolute AoA’s pitot-static ports). Ideal for pilots seeking detailed performance metrics and less to remember. The Barmeter and Chevron presentations are time-tested, while the Performance option provides advanced functionality for precision flying. Don’t fly just any AoA; Fly Absolute AoA from Holy Micro!

For years, most Angle of Attack (AoA) systems have served as basic stall warning tools—leaving many pilots to question their true value. But what if an AoA system could do more? What if it offered useful, reliable data throughout the entire flight envelope? Introducing Absolute AoA, the latest FAA-certified innovation from Holy Micro! LLC—the team behind the FAA Approved SkyVoice Alert 500 and SkyVoice Glassy Guide 400, known for its clear, voice-based altitude callouts. Absolute AoA breaks away from the limitations of traditional differential pressure systems. Instead of relying on a single sensor, it uses a multi-sensor approach based on normalized pressure ratios, delivering accurate and continuous AoA data in all phases of flight—not just at the edge of stall. Traditional systems are often sensitive to placement, require long tubes, tedious calibration, and connect awkwardly to audio systems. Many are effective only at low speeds and high angles, with little benefit during normal operations. Absolute AoA solves these challenges with a forward-looking design built for real-world flying. The probe, machined from aircraft-grade 6061 aluminum, mounts easily beneath the wing’s inspection plate. Integrated LiDAR detects flap deployment automatically. Whether you’re in climb, cruise, approach, or maneuvering near Vx, Vy, or best glide, Absolute AoA adapts to changing flight conditions and aircraft configurations in real time. The installation process is simplified and efficient. Installers can choose between a wireless option, which allows quick installation using WiFi/Bluetooth, no long tubes and minimal wiring or a wired version, typically completed in 3–4 hours using existing inspection panels. For cockpit integration, Absolute AoA offers multiple display options— a compact 2.8” touch screen designed to fit a standard 3 1/8” instrument panel opening, and a 2.8” bar-style touch screen display for dash mounting—both providing real-time feedback to support better pilot decision-making. These displays are optimized for readability and integration across various cockpit layouts and aircraft types. Audio alerts are flexible too: a wired connect to the aircraft’s audio panel/radio via the AUX/Alarm port, or transmit alerts via Bluetooth to a headset/audio panel, or use the optional 5W external speaker (recommended for the clearest alerts). Also included is a 6.5-inch Human-Machine Interface (HMI) designed to streamline system setup and calibration. The intuitive interface enables fast, accurate setup without requiring lengthy procedures or complex configurations. Absolute AoA debuted at SUN 'n FUN and is gaining attention at EAA AirVenture Oshkosh 2025 , where it will be featured at Hangar C, Booths 3149 & 3150. Backed by FAA approval and designed to enhance pilot awareness beyond stall protection, Absolute AoA helps you fly better—smarter, safer, and with confidence. Learn More and Pre-Register

Holy Micro! LLC (holymicro.com), well-known for its innovative voice-enabled AGL altimeters and alert systems—such as the SkyVoice Alert 500 and SkyVoice Glassy Guide 400 (nicknamed “Bitching Betty” or “Barking Bob” by pilots)—has received FAA certification for its latest breakthrough: the Absolute AoA system. After a successful debut at SUN 'n FUN Aerospace Expo, where it received strong acclaim from aviation professionals, the Absolute AoA will now be available at EAA AirVenture Oshkosh 2025, at Hangar C, Booths 3149 & 3150, bringing this cutting-edge solution to a wider audience. Why Absolute AoA Is a Standout Innovation At the core of the Absolute AoA is an advanced multi-sensor normalized pressure ratio system, representing a major leap beyond legacy single-sensor differential pressure technologies. This state-of-the-art method provides accurate, real-time angle-of-attack readings across all flight phases and includes automated flap position detection for greater reliability. In its SAIB 2024-07 bulletin, the FAA highlights how AoA systems enhance situational awareness and help prevent stalls and loss-of-control (LOC) events. Absolute AoA directly supports these safety goals with a dependable, easy-to-use system that equips pilots with clear, actionable information. The Problem with Traditional AoA Systems Older AoA indicators—relying on a single pressure sensor—are often limited in scope, primarily functioning during slow-speed, high-AoA flight conditions already covered by onboard stall warning systems. These systems can also be challenging to install and maintain due to calibration demands, drainage and heating needs, and added pilot training. Since most aircraft already include stall warnings, many pilots question the need for an AoA system with such limited range. Existing solutions typically lack flexibility, and the absence of standard display formats can reduce usability. In contrast, the Absolute AoA offers comprehensive, real-time data during takeoff, climb, cruise, descent, and landing—providing value far beyond stall protection, and greatly improving overall flight performance and confidence. Precision Across All Flight Conditions This fully independent system is designed to deliver consistent and precise AoA measurements in all flight environments. Using multiple sensors and a validated normalized pressure ratio approach, it has been rigorously tested through 20 years of research and flight trials. Whether flying at high or low altitudes, different speeds, or with varying aircraft loads, Absolute AoA delivers dependable data. It also supports essential performance targets like Vx, Vy, and Best Glide, not just stall speed. (Patent pending.) Smart Design. Simple Installation. • Robust Construction: The AoA probe is crafted from aircraft-grade 6061 aluminum and mounts under the wing’s inspection plate. • LiDAR-Based Flap Detection: A game-changing feature that eliminates mechanical flap linkages by detecting flap position with precision during takeoff and landing profiles. Installation Options: • Wireless setup: Around 1 hour • Wired configuration: Generally 3–4 hours using standard access points Flexible Connectivity and Display Options • Reliable Communication: Choose between Wi-Fi or wired connectivity to link the wing-mounted sensor with the cockpit processor. • Display Variants: 2.8” Display for 3 1/8” Instrument Panel Opening 2.8” Bar style display for dash mount. 6.5-inch digital HMI (Human-Machine Interface) for streamlined setup and calibration Accuracy That Covers the Full Flight Envelope While traditional systems may falter outside stall zones, Absolute AoA maintains linear, accurate readings across all phases of flight. The result? Clear, meaningful data that enhances pilot decision-making—especially during takeoff, landing, and slow-speed operations—ultimately improving both safety and flight quality. Visit http://www.holymicro.com to learn more.

We’re proud to share a major milestone—just over last one year since launch, more than 100 pilots have chosen the SkyVoice Alert 500 to enhance safety during takeoff and landing. The response has been humbling, and the results speak for themselves: smoother landings, greater confidence, and strong word-of-mouth from general aviation pilots Why choosing SkyVoice Alert 500: Precise LiDAR-based height announcements Real-time voice callouts from 500 ft AGL to 1 ft FAA NORSEE-approved—no STC required LiDAR range of 590ft. Repeated gear warnings from 560ft until the gear is down & locked. LiDAR based height call-outs, 500 to 1 ft on Take-off/Landing. Bluetooth or wired, HUD. LiDAR Central wavelength is 905nm and Frame rate is 100Hz. Many user selectable Reminders on take-off and landing: Check Gear, Checklist, LC GUMPS, Flaps, Speed, Clearance, Prop and Pump. GPS/MSL Height call-outs & reminders - Check Oxygen, IFR Altimeter, Clearance, Prop & Top of descent. Run-time reminders like Check Tank and Check Fuel. What started as a safety innovation is now becoming a trusted cockpit companion for pilots around the country. Hear directly from our customers We’ve put together a short video featuring real feedback from pilots who’ve been flying with the system and sharing how it’s improved their landing awareness: Their stories mean more to us than any marketing pitch ever could. Thank you to all who’ve supported us over the past year. Your trust and feedback have helped us grow into a strong, user-driven aviation safety brand. We look forward to continuing to serve the GA community with reliable, pilot-focused technology. If you’re using SkyVoice Alert 500, we’d love to hear your experience. And if you would like to know more about SkyVoice Alert 500 visit www.holymicro.com or feel free to reach out—I’m always happy to answer questions or connect you. Stack the odds in your favor. Install SkyVoice. Fly Safely.

Regarding “A way to mask those call outs on climb out”, our system detect Go-Around and will not make any announcements. Further, In the case of AGL height announcements, we can enable only the required heights. For example, if only 400, 300, 100, 50, and 10 feet are needed, the system will call out only these specific heights.

In order for the gear detection to work, the SkyVoice Alert LHA 500 uses a sensor wire to detect the presence or absence of voltage on the gear position indicator circuit. If the aircraft has separate indicator lights (e.g., a Green light for "gear down and locked" and a Red/Amber light for "gear up and locked"), the sensor wire can be connected to either. The corresponding detection method must then be selected in the SkyVoice Alert LHA 500 software based on where it is connected.

For pilots navigating the skies, situational awareness is paramount, especially during critical phases like takeoff and landing. Holy Micro! LLC’s SkyVoice Alert 500 (Model: LHA-500-A) is a game-changing, NORSEE-certified device designed to enhance safety by providing real-time audio height announcements and critical reminders. Whether you’re flying a pressurized, certified, or experimental aircraft, this compact system integrates seamlessly to support better decision-making. Here’s why the SkyVoice Alert 500 is a must-have for general aviation pilots. What is the SkyVoice Alert 500? The SkyVoice Alert 500 is an FAA Approved system that uses advanced LiDAR technology to measure height above ground level (AGL) with ±1% accuracy, up to 590 feet. It delivers audio announcements through your headset—via wired connection or Bluetooth—alerting you to predefined heights, landing gear warning, and other reminders. Certified under FAA’s NORSEE. It can be used in all aircraft (pressurized, certified and experimental). Key Features and Benefits LiDAR-Powered Precision Utilizing a built-in LiDAR (Laser) with eye-safe Class 1 Laser module for measurements, an accuracy of ±1% (distance to ground/objects) is achieved. Announces heights like 500, 400, 300, 200, 100, 70, 50, 20, 10, 5, 2, and 1 foot during takeoff, landing, or go-around, helping pilot’s master depth perception. A hard surface such as Tarmac, Asphalt, and Concrete runways, along with turf/grass or dirt strip are suitable for range reading. (not approved for use over water or if the runway has a water level of 3 inch or more.). Customizable Audio Alerts Choose between male (“Frank”) or female (“Lisa”) voices for clear, professional announcements. Reminders that can be set are “Clearance, Check Gear, Checklist, Speed, Flaps, Pump, LC GUMPS and Prop”. Only one Reminder per Height is allowed and no reminder below 100. Adjustable volume and power-on announcements (e.g., “SkyVoice Alert 500 Ready” at 0, 30, 60, or 90 seconds) ensure compatibility with your audio panel or Bluetooth headset. Advanced Safety Features Landing Gear Warning: Detects gear position (up/down) using an isolated optical sensor, announcing “Check Gear” every 2 seconds (adjustable) if gear is up below 560 feet AGL. GPS Integration: Connects to GPS via RS-232 to announce altitudes from 18,000 to 500 feet MSL Run Time Reminders: Alerts for “Check Tank” (The user can set a value from any of the listed time interval viz. 30 min, 45 min, 60 min and 90 min) and “Check Fuel” (The user can set a value from any of the listed time interval viz. 1 hr, 1.5 hr, 2 hr, 2.5 hr, 3 hr, 3.5 hr and 4 hr) to maintain fuel awareness. Go-Around Detection: Recognizes Go-Arounds based on height thresholds (default: 400 feet start, 100 feet climb) to resume relevant callouts. Once Go-Around is detected, SkyVoice Alert 500 will announce the already announced higher altitudes only after the device goes out of range and time entered is elapsed. Easy Installation and Setup Weight: Just 215 grams (7.58 oz) Dimensions: 75 x 48 x 61 mm (2.95” x 1.89” x 2.40”) Voltage Supply: 12V-28V (30V MAX) Power Consumption: 1W nominal, 150mA @12V The unit is designed to Mounts on an inspection plate with an unobstructed view of the ground, avoiding engine exhaust or moving parts. The LiDAR beam spreads to 9 feet at 500 feet AGL, ensuring focused readings. Standard and Advanced Modes Standard Mode: Focuses on LiDAR-based height announcements and basic reminders for simplicity. Advanced Mode: Unlocks GPS integration, Gear warnings, Bluetooth, and Runtime Reminders for enhanced functionality. Maintenance-Free and Built to Last The SkyVoice Alert 500 requires no field maintenance. Built to withstand harsh conditions, it operates from -25°C to +60°C (-13°F to +140°F) and stores safely at temperatures ranging from -40°F to +185°F. The only recommended care is to clean the window with a dry, clean cloth, applying no pressure. A slightly wet cloth (water only) can also be used if needed. Whether you’re flying a Cessna, Piper, or experimental aircraft, the SkyVoice Alert 500 is a powerful safety enhancement device designed with pilots in mind. From LiDAR precision to intuitive voice reminders, this system brings a new level of awareness to every cockpit. To learn more or to purchase, visit www.holymicro.com. After purchase, you’ll also gain access to our complete Installation and Software Setup Manual.

We had an incredible time participating in the Sun 'n Fun Aerospace Expo 2025, held from April 1–6 in Lakeland, Florida. Holy Micro! was proud to exhibit at Booths #27 & 28, where we showcased our full range of aviation safety products. It was a fantastic opportunity to connect with pilots, aircraft owners, seaplane operators, aviation enthusiasts, and fellow innovators. The energy and enthusiasm throughout the event were amazing, and we’re grateful for all the support and interest we received. We brought our entire lineup to Sun 'n Fun, including: SkyVoice Alert 500 – LiDAR AGL Altimeter for all GA Aircraft SkyVoice Glassy Guide 400 – RADAR AGL altimeter designed for seaplane/amphibians SkyVoice Glassy Guide 400 Portable – Quick-install portable version for seaplanes/amphibians Absolute AoA – Our latest innovation providing real-time Angle of Attack alerts (the highlight of our booth!) The Absolute AoA drew the most attention during the show. Its precision, ease of use, and potential to prevent stall-related accidents made it a popular discussion point among pilots and instructors alike. We’re excited by the positive feedback and can’t wait to see it in more cockpits soon. Here are a few pictures from our booths – thank you to everyone who stopped by to chat with us! Thank you again to the organizers of Sun 'n Fun and all the wonderful attendees. If you missed us at the expo or want to learn more about our products, feel free to visit our website at holymicro.com or reach out directly. We’re currently offering a 10% discount for those who pre-register for Absolute AoA! Don’t miss this opportunity to be one of the first to fly with it. Pre-register now at holymicro.com

Thanks for your interest! We have demo videos for our Skyvoice Alert, Skyvoice Glassy Guide 400, and Glassy Guide 400 Portable available on our YouTube channel Holy Micro SkyVoice —feel free to check them out for a closer look. As for Absolute AoA, it’s currently in the pre-registration stage, so stay tuned for more updates!