A French engineering team has developed an autonomous micro-drone system capable of detecting, identifying, and destroying mosquitoes in flight while leaving other insects untouched, offering a potential breakthrough in the fight against mosquito-borne diseases.
Tornyol, a Y Combinator-backed startup (Fall 2025 batch), has created a lightweight solution centered on modified 40-gram “tinywhoop”-style quadcopters paired with a sophisticated ground-based ultrasonic detection system called LeSonar2. The technology aims to provide a chemical-free, highly targeted alternative to traditional mosquito control methods.
The system relies on two main components: a stationary base station and one or more agile drones. The base station employs an ultrasonic phased-array sonar using hundreds of smartphone-style MEMS microphones and 40 kHz emitters. Processed in real time by an Artix-7 FPGA, it analyzes micro-Doppler signatures generated by insects’ wingbeats.
Female mosquitoes, in particular, produce a distinct frequency profile around 600 Hz with unique harmonics, distinguishable from bees, moths, and other insects. The system achieves 3D localization with beams as narrow as 5°×5° and a range of up to about 8 meters, even in darkness.
Once a target is confirmed, a drone autonomously launches, intercepts the mosquito using custom control algorithms (including reinforcement learning for robustness in wind), and destroys it physically with its propellers. Drones return to the base for recharging, enabling near-continuous operation.
Founders Alex Toussaint (CEO, a DSP and electronics specialist with experience at MBDA missile systems) and Clovis Piedallu (COO, drone control and algorithms expert) emphasize the system’s selectivity and low cost.
“A small fleet of around 10 drones could clear a square kilometer,” the team claims. They argue this approach could reduce mosquito-control costs by up to 100 times compared to traps, spraying, or nets, thanks to inexpensive, reusable hardware and precise targeting.
Mosquitoes remain the deadliest animals to humans, linked to roughly 700,000 deaths annually from malaria, dengue, West Nile virus, and other diseases. Tornyol’s long-term vision includes not only direct control but also high-resolution mapping of mosquito behavior for improved strategies, particularly in endemic regions.
The company, based near Paris, has raised approximately $3.5 million in seed funding. It is taking pre-orders for LeSonar systems (with refundable $100 deposits and full systems around $1,100 or subscription options) and targets consumer use in gardens and homes, with industrial pilots underway. U.S. shipping is planned for 2027. Demos of components, including air-to-air intercepts and sonar tracking, have been showcased at events like Hackaday Supercon.
Unlike broad insecticide spraying or larviciding drones that treat breeding sites, Tornyol’s adult-hunting method is hands-off and environmentally selective, sparing pollinators and reducing chemical runoff. It builds on hobbyist drone technology combined with professional signal processing using widely available components.
However, significant challenges remain. Scaling fleets for reliable outdoor operation will require addressing wind, weather, battery endurance, and regulatory approvals for autonomous systems—especially in malaria-endemic areas. Proving large-scale efficacy and ensuring minimal ecological disruption (such as effects on bats or other insectivores) will be critical.
“This is an exciting hard-tech bet on cheap robotics and clever signal processing,” observers note. If successful at scale, the system could become a valuable public health tool.
Tornyol maintains a transparent approach, sharing demos and technical details on its website (tornyol.com). As development continues, the French startup’s progress will be closely watched by global health and robotics communities.
For more information, visit tornyol.com or their YC profile. Pre-orders and waitlists for the LeSonar system are currently active.
