Hello ModalAI Engineering Team, We are considering purchasing the Starling 2 (C26/C27) and Starling 2 Max (C29) for indoor inspection applications in factories and warehouses in Japan. We previously contacted ModalAI Sales and were directed to this technical forum for product-related technical questions. Before purchasing, we would appreciate clarification on the following points. 1. Wireless communication and Japanese radio regulations Could you identify the radio modules used for remote control, Wi-Fi, video transmission, and telemetry on the C26, C27, and C29, including their model numbers and whether they have Japanese MIC/Giteki certification? If any modules are not certified for use in Japan, can they be replaced with Japan-certified alternatives? If so, which specific modules are compatible, and what hardware modifications or software configuration changes would be required? Can these replacements be performed by the customer? 2. Battery compatibility Could you provide the required battery specifications for each model, including voltage, capacity, physical dimensions, connector type, and discharge-current requirements? Do the supplied batteries fall under Japan's PSE requirements, and what is their compliance status, if applicable? Are there any verified compatible replacement batteries available from suppliers in Japan? Can the original batteries be shipped to Japan? 3. Battery chargers ModalAI Sales informed us that battery chargers are not supplied. Which chargers would you recommend for safely charging these batteries using Japan's AC 100V, 50/60Hz power supply? Are there any recommended charger models available from suppliers in Japan? Are you aware of any recommended chargers with the applicable Japanese PSE compliance? If specifications differ among the C26, C27, and C29 models, please provide model-specific information where possible. Thank you for your assistance.

following up on this @eric-katzfey is there any recommended path to get narrow FOV cameras on the VOXL2/VOXL2 mini outside of VOXL2 ecosystem. Is USB the only path?

Title: Starling 2 Max – Flight Performance at 2,800–3,000 m Above Sea Level Hello ModalAI Engineering Team, We are evaluating the Starling 2 Max for research flights inside rose greenhouses in Tabacundo, Ecuador, at approximately 2,800–3,000 meters above sea level. Before purchasing the aircraft, we need to assess whether this operating environment falls within its safe flight-performance limits. Could you please clarify: What is the maximum recommended operating altitude above mean sea level for the Starling 2 Max? Has flight performance been tested or characterized at approximately 3,000 meters above sea level? What reduction in thrust margin or flight endurance should we expect at this altitude? Are there recommended limits for payload, battery configuration, ambient temperature, or mission duration under these conditions? Does ModalAI provide performance curves or engineering data that could help us evaluate this operating scenario? Are there any special safety precautions or configuration changes recommended for high-altitude operation? Our primary concern is maintaining adequate thrust margin and safe, repeatable flight performance inside a confined greenhouse environment. We would appreciate any relevant documentation or test data. Thank you. FloraVision AI Engineering Team Ecuador

@qqa , we have document how to achieve folder-level encryption on VOXL2 here : https://docs.modalai.com/enabling-file-encryption/ . Please let us know if you have any other questions.

Sorry @senja for the delays, this post did not get flagged for me. Yes, they install on different sides of the VOXL 2 board as shown here: https://docs.modalai.com/voxl2-connectors/#connector-callouts [image: 1792693889198-9a619597-c0ad-460a-b43a-c0689c8a0aab-image.jpeg] https://docs.modalai.com/M0226/#overview [image: 1792693659205-3064b401-56ca-4e7d-973c-0fe9c3ebe5cc-image.jpeg] https://docs.modalai.com/m0062-datasheet/#connector-callouts [image: 1792693766032-bc42a15b-8021-47f4-a9b6-534603ed8399-image.jpeg]

Update on this, I tried following this post which has helped before, but it also did not help in this case: https://forum.modalai.com/topic/2789/voxl2-stuck-in-fastboot?_=1792769614627 So I tried SDK 1.8.0’s flash-system-image.sh -f: all writes completed, but both boot slots became unbootable and ADB never returned. RAM boot of either M0054-1 kernel (var00.0 or var00.1) fails with Failed to load/authenticate boot image: Load Error.

@juancho248 Hello, Which onboard localization and navigation capabilities are available for autonomous flight without GNSS? -> The starling 2 max uses openvins for localization, and we would encourage you to use april tag relocalization in order to navigate around indoor environments as openvins can drift over time. How reliable is visual-inertial localization in repetitive greenhouse rows with limited visual features? -> This is tough to be deterministic BUT, cant expect 2% error over distance. Greenhouse rows reminds us of the SAVLoc from Micheal Baldwin (presented at the PX4 dev summit): https://www.youtube.com/watch?v=9wk9_TNN1DA. This is not something that is present natively on the VOXL but presents an interesting localization technique indoors that you can utilize. Can the platform execute predefined and repeatable trajectories without GPS? -> yes, but again we would recommend utilizing the april tags for relocalization as there is some error over distance. you can also utilize mavsdk in order to put the drone in offboard mode and control trajectories. You can find that documentation here: https://docs.modalai.com/mavsdk/ What software components, SDKs, or additional development are required to implement those trajectories? -> refer to answer in last question Which onboard sensors are used for obstacle detection and avoidance, and what limitations should we consider around thin wires, foliage, and greenhouse structures? -> TOF module as well as tflite and opencv for computer vision. There is a collision prevention module inside PX4 that will prevent the drone from flying into something in position flight mode. You obviously have already used voxl-mapper. Anything higher level you can program in yourself in our ROS 2 plugin Does ModalAI have documentation or examples for autonomous indoor waypoint navigation using Starling 2 Max? -> currently mainly the voxl-mapper. There are some custom projects that Ascend Engineering has worked on to do this What safety measures and fallback behaviors are recommended if localization becomes unreliable? -> Would recommend flying in a netted & controlled area that is separate from humans. Also, have a remote control that you can switch back into manual control in order to take manual control of the drone if you feel localization is becoming unstable

Hello. Can a Starling 2 drone autonomously fly while flying over the pipe inside a sewer? The drone must fly autonomously in a dark place to inspect cracks or internal conditions while flying along the water pipe. I'm not sure if this feature can run on Starling, so I'm asking for help!

Hello everyone, I am looking for some expert advice on a VOXL 2 companion computer setup for a long-range platform. I have two main integration challenges: Challenge A: VIO at Higher Altitudes To solve the motion blur and pixel density issues at higher altitudes, I am planning a 6-camera configuration. I want to use 4 downward-facing sensors (2 daylight + 2 IR) equipped with narrow-angle lenses, alongside 2 standard wide-angle sensors (front and rear). Could you advise on the best supported sensors (e.g., IMX series) for this? Has anyone successfully tuned the voxl-qvio-server for narrow-angle lenses, and what were the altitude limits you achieved? Challenge B: LAN Integration & WireGuard The payload data flow will be: External RTSP Camera -> Ethernet -> VOXL 2 (WireGuard encryption) -> Ethernet -> Digital RX. Because VOXL 2 lacks multiple LAN ports, I will need a miniature industrial Ethernet switch. Does ModalAI have any tested hardware recommendations for this? Furthermore, what is the best practice for routing this VPN traffic through the VOXL 2 Ubuntu environment without bottlenecking the CPU? We are currently evaluating the VOXL 2 for a broader fleet deployment and want to ensure the ecosystem can support this custom optics requirement. Any feedback on off-the-shelf solutions or standard configurations for this use case would be greatly appreciated. Thank you!

Hi @christopher-rajcsok We updated the VRX User Guide page with mechanical information for you. Hope it helps!! https://docs.modalai.com/vrx-ground-unit-datasheet/#enclosuremount [image: 1792436471248-dce4b444-0777-40ac-9a2a-2b58c922961f-image.jpeg]