Knowledge

When choosing an underwater thruster, most people focus on thrust, voltage, and waterproof depth. However, there is a core component that often gets overlooked but determines your noise level, handling smoothness, and battery life—the Electronic Speed Controller (ESC). Currently, the two mainstream driving technologies on the market are PWM (Pulse Width Modulation) and FOC (Field-Oriented Control). Today, we will dive deep into the differences between them and compare the ApisQueen U10 and U92 Pro to see which solution fits your project best. 1. What is a PWM ESC? (The Traditional Choice) PWM driving typically uses a "six-step commutation" method. Simply put,...

Have you ever wished you could “see” heat in total darkness, through fog, or in smoky environments? Now, the 640×512 Long-Wave Infrared 12µm Mini Thermal Imaging Camera makes it possible. Compact yet powerful, it’s designed for drones, FPV flights, and underwater ROVs, delivering professional-grade thermal imaging wherever you need it. Small Size, Big Power Don’t let its small size fool you — this camera packs serious capabilities: High-Resolution Thermal Imaging: 640×512 pixels reveal even subtle temperature differences and hotspots Long-Wave Infrared 12µm: Captures thermal radiation even in complete darkness or challenging environments Lightweight & Compact: Perfect for drones, FPV setups, or...

We are excited to introduce the upgraded version of our remote control system — the APISQUEEN W300 Wireless Waterproof Remote Controller. As a major upgrade from the previous A300 2.4G 6-channel Remote Controller, the W300 retains all the proven core features while significantly improving water resistance and overall reliability, delivering a safer and more dependable control experience for marine environments. ⚠️ The product is currently undergoing final optimization and testing for GPS and wireless functions. Features will be finalized in the official release.  Why This Upgrade? Over time, we’ve received valuable feedback from many of our users: “The controller works great,...

When choosing an underwater thruster, many users find themselves torn between the AQ1020 and its upgraded version, the AQ1121. On the one hand, the AQ1020 delivers a thrust of up to 24 kg at 48V, which is even higher than the AQ1121’s 21 kg;on the other hand, the AQ1121 is marketed as the ‘upgraded version’. 👉 So the question arises:What exactly has been upgraded in the AQ1121? Is it worth choosing? This article will help you fully understand the differences between the two by examining thrust, the control system (FOC), real-world user experience and application scenarios. Product Overview AQ1020 Underwater...

Chapter 1: Introduction to the Modbus Protocol The Modbus protocol is a universal language used in electronic controllers. Through this protocol, controllers can communicate with one another, and controllers can communicate with other devices via a network (such as Ethernet). It has become a universal industrial standard. With it, control devices produced by different manufacturers can be connected into an industrial network for centralised monitoring. This protocol defines a message structure that a controller can recognise and use, regardless of the type of network through which communication takes place. It describes the process by which a controller requests access to...