Nordic nRF52811 SoC builds on the success of the Nordic nRF52 Series platform and brings richer connectivity for applications adopting advanced wireless Internet of Things capabilities (such as Bluetooth 5.1 direction finding, thread, and ZigBee). nRF52811 SoC is the fourth-generation product of the nRF52 Series platform, which extends the platform to cover many applications and use cases. Protocols supported by radio, including Bluetooth 5.1 direction finding, all Bluetooth 5 features, 802.15.4, Thread, ZigBee, and proprietary 2.4GHz. nRF52811 SoC has 4 DBM TX power, which is optimized to provide the best reception sensitivity of all SoCS in the nRF52 series: BLE remote: - 104 dBm BLE-1 Mbps：-97 dBm 802.15.4（Thread/ZigBee）：-101 dBm This SoC device combines the low-cost features of Nordic's entry-level nRF52810 SoC with the multi-protocol support of mainstream nRF52832 and high-end nRF52840 SoCs.  nRF52811 is also the first Nordic low-power wireless connectivity product in the family to support Bluetooth 5.1, adding a direction-finding feature for Bluetooth 5 with high throughput, long distance, and enhanced coexistence function. nRF52811 SoC can realize the latest and most powerful functions of Bluetooth 5.1, the most prominent is the direction-finding function, which pushes the Bluetooth positioning to a new height. Based on the strong basic support of the nRF52811 chip, RF-star can supply a mature Bluetooth indoor positioning solution for customers. Nordic nRF52811 SoC is built around 64 MHz arm ® cortex ™ - M4 CPU and has a series of digital peripherals and interfaces, such as PDM, PWM, UART, SPI, and Twi. It also has a 12-bit ADC. Using an advanced on-chip adaptive power management system can achieve extremely low-energy consumption. It also includes a multi-protocol 2.4GHz RF module with 4dbm output power, - 97dBm sensitivity (in Bluetooth 5 1Mbps mode), a 64MHz 32-bit arm ® cortex ™ - M4 processor, 192KB flash, and 24KB RAM. nRF52811 SoC joins the Nordic multi-protocol product family to meet the most extensive application requirements today. Nordic can provide ideal solutions no matter whether the main needs of developers are direction finding, supporting popular RF protocol, high throughput, long distance, or price. As an excellent Bluetooth solution provider in China, RF-star can provide customers with high-quality Bluetooth solutions. nRF52811 SoC Bluetooth 5.1 direction finding function makes the positioning solution not only dependent on the Received Signal Strength Indicator (RSSI) but also based on the actual direction of the signal, which significantly improves the positioning accuracy and opens up a new application space. There are two methods to determine the direction of the signal: one is to calculate the angle of arrival (AoA) of the received signal, and the other is to calculate the angle of departure (AoD) of the transmitted signal. The DF function can be used in two-dimensional or three-dimensional space, which...

RF-star, a leading global manufacturer of wireless modules, announces the upcoming release of its highly anticipated RF-TI1354P1 Wi-SUN module. Scheduled for launch in August, this innovative module based on TI CC135410 SoC, is poised to empower large-scale IoT deployments with its multiprotocol, dual-band capabilities, catering to the growing demands of smart cities, smart energy, grid infrastructure and industrial IoT sectors. Figure 1 RF-TI1354P1 Wi-SUN Module Is Coming Soon The RF-TI1354P1 module, promises to deliver a robust performance with wireless bands of 800 MHz - 928 MHz and 2.4 GHz. It can coexist and operate concurrently in multiple wireless stacks, eg. Bluetooth Low Energy 5.3, Matter, Thread, Wi-SUN, Zigbee protocol through a DMM driver. Equipped with 1024 kB Flash and 288 kB RAM, the Sub-1GHz transceiver is designed to operate as a border router, extending its reach to up to 300 border router nodes. In a mesh network, each device can establish multiple and robust connections with nearby devices. Its self-healing and self-configuration capacities provide a more robust network and reduced downtime for the thousands of connected nodes. This feature is particularly advantageous for complex, distributed IoT applications that require extensive connectivity and reliable data transmission. Figure 2 Wi-SUN mesh network topology “The introduction of the RF-TI1354P1 module marks a new era in IoT connectivity,” said Ben Qiu, GM of RF-star. “Its extensive nodes within a network will greatly enhance the scalability and flexibility of IoT solutions, making it ideal for smart city, grid infrastructures and industrial applications.” The RF-TI1354P1 module is expected to build upon the success of RF-star's existing Wi-SUN modules, including the RF-SM-1277B1 and RF-TI1352P2, which have already established a strong reputation for their low power consumption, high data throughput, and ease of deployment. The new module's dual-band capability and extended node support will further solidify RF-star's position at the forefront of IoT wireless communication technology. Figure 3 RF-star’s Wi-SUN Modules Support Border Router Node, Router Node, Leaf Node. As the global Wi-SUN technology market is predicted to grow at a CAGR of 13.45% between 2024-2032, the RF-TI1354P1 module's release could not be timelier. It aligns with the market's shift towards more interconnected and intelligent systems, particularly in the realms of smart cities and energy management. RF-star's dedication to innovation is evident in its development of high-performance Wi-SUN modules, which are set to empower a new wave of IoT applications. These advancements aim to enhance connectivity efficiency, reduce costs, and ultimately improve the user experience. For more information on RF-star and its upcoming Wi-SUN module, please visit www.rfstariot.com About RF-star Shenzhen RF-star Technology Co., Ltd (RF-star) is a leading global provider of wireless communication modules and solutions, ...

What will the future automated parking be like? Today, we may use BLE to control automobiles to achieve the PKE and PEPS. Without AoA AoD support, BLE cannot reach a "cm" level locating, regardless of the antenna array for AoA AoD, we may try other technologies. In order to achieve more specified functions, Let's try UWB! What functions will be? L4 Indoor Automated Driving Secure Interconnection cm Level Positioning

In 2017, with the emergence of the bicycle sharing mode, the traditional travel field was instantly overturned. However, while it brings convenience to people's life, it also causes some disadvantages. When there is a lack of management of "stop and release as needed", it becomes a disorderly stop and release, which not only brings a lot of inconvenience to others, but also brings great troubles to city managers and bicycle-sharing operators. In order to further improve the parking order of shared bicycles, Bluetooth electronic fence technology has become a feasible solution. Bluetooth electronic fence technology is based on Bluetooth's positioning, broadcasting and transmission functions to realize vehicle entry management and vehicle on-site statistics. What Is Bluetooth Electronic Fence? Bluetooth electronic fence refers to the platform planning and setting up a certain area, allowing and standardizing the parking of shared bicycles in this area, and placing Bluetooth beacon equipment in this area, which can detect the shared bicycles installed with Bluetooth within a radius of 50 meters. If the vehicle is parked beyond the specified area or traveling beyond the specified area, the system will generate a series of alarm notices, so that the manager can check and know the dynamics of the relevant vehicle in time and take corresponding measures to deal with it. The public electronic fence realizes data interaction through Bluetooth, and its signal and data coverage accuracy can reach Yami level, management is accurate to vehicles, and can be compatible with the standard parking of different brands sharing bicycles. The sharing bicycle Bluetooth electronic fence scheme is based on the integration of bicycle perception, electronic fence induction, long endurance and other technologies, through Bluetooth wireless broadcast, positioning and transmission services, under the premise of ensuring the long endurance of nodes, to achieve stable and reliable electronic fence services such as bicycle perception, fence induction, etc., to achieve the interconnection of sharing bicycle, bicycle parking point, operation service platform, effectively solve the urban management difficulties caused by the disordered development of Internet shared bicycles. Three Implementation of Electronic Fence There are three main technical implementation methods of electronic fence: Electronic fence based on satellite positioning technology (GPS); Use the Bluetooth device of the bike lock to read the electronic fence of the Bluetooth label fixed at the parking point; The Bluetooth of the user's mobile phone reads the Bluetooth electronic tag of the parking point and the electronic fence of the vehicle-mounted Bluetooth tag; The first and second technologies rely on satellite positioning technology and Bluetooth device on the bike lock respectively, which is relatively hidden visually. The third type of installation and deployment is extremely convenient, which is convenient f...

Shenzhen RF-star Technology Co., Ltd. (RF-star), a leading wireless module manufacturer, has released its latest Bluetooth UART transparent transmission protocol for CC2652P-based BLE modules RF-BM-2652P2 and RF-BM-2652P2I. This new offering is set to revolutionize the landscape ofhigh-power Bluetooth Low Energy (BLE) modules, by providing developers with robust, long-range wireless solutions tailored for multi-connectivity needs. Enhanced Connectivity with High-Power BLE Modules BLE technology, renowned for its low power consumption and ease of use, has long been a cornerstone of short-range wireless communication. However, as the demand for long-range connectivity in smart home and industrial automation applications grows, the need for high-transmit power BLE devices has become increasingly apparent. RF-star's CC2652P modules, RF-BM-2652P2 and RF-BM-2652P2I, feature a built-in power amplifier with a maximum transmit power of +20 dBm. This extends the transmission range from the conventional 10 meters to hundreds of meters. The New Era of Bluetooth UART Transparent Transmission The introduction of Bluetooth 5.0 transparent transmission protocol -- essentially a serial port protocol -- is excellent news for developers. Equipped with this protocol, the modules can work in BLE master mode, slave mode, master-slave mode, and Beacon mode. Here are some standout features (AT commands) that make these modules a must-have for high-power applications: Adjustable Transmit Power: With 22 levels of transmit power adjustment ranging from -20 dBm to +20 dBm, developers can fine-tune the output power to suit their specific requirements, ensuring optimal performance without unnecessary power consumption. Multi-Device Connectivity: Supporting one-master and multi-slave connections, these modules can handle up to 8 devices simultaneously, making them ideal for complex networks and IoT ecosystems. Extended Broadcast Packets: Customizable extended broadcast packets of up to 251 bytes allow for more data to be transmitted in a single packet, enhancing communication efficiency. High UART Forwarding Rate: A maximum stable UART forwarding rate of 35 KB/s ensures that data transmission is swift and reliable, even in high-traffic scenarios. Observer Mode with A Filter: This feature allows users to monitor and filter specific parameters, offering greater control and deeper insights into the module's operations. Bluetooth Pairing and Bonding Support: Seamless integration with existing Bluetooth ecosystems is facilitated by support for pairing and bonding, ensuring compatibility with a wide range of devices Automatic Reconnection: The automatic reconnection ensures that the module maintains a stable connection, even in the face of temporary disruptions. Multi-Protocol Support: BLE5.2, ZigBee, Thread, etc. Beyond Bluetooth serial port capabilities, the RF-BM-2652P2 and RF-BM-2652P2I modules also support multiple protocols, including Bluetooth 5.2 Low Energy, T...

Wireless Ebike BMS: Battery Management System What functions will be added to the wireless E-bike? Real-time monitoring to prevent over-charging and over-discharging More safety Theft-proof Extend the Battery life Remote control by mobile phone

Automobile makers has been caught in crunch of electronic components shortage，albeit the trend of intelligent cars is irresistible. As the most instant and impressive evidence of smartness to users, the PEPS （Passive Entry and Passive Start）system is no more a high profile feature only for high end cars. It has been introduced to mid-tier or even economical models by many car makers, emerging brands in particular. In China market where EV sales witness more than 100 percent growth in the first half of 2022, major electric car makers such as BYD, GAC Aion, Geely, Nio, Xpeng and Li Auto have basically equipped all models with PEPS. While that ECU quietly stuns us motorists, have we ever thought of probing the trail of its making and the prospect of its future? Let’s hit the road. PEPS provides motorists with experience of securely entering the car without manually unlocking activity. The engine and HVAC system of the car can be remotely started before the driver or passengers enter the car. While all passengers leave the car, the PEPS will automatically lock the car. In this way, car users enjoy the convenience of passive entry with security reassured. That must be why we name it with the word “passive”. Yesterday: RKE and PKE Currently, mainstream PEPS solutions integrate wireless technologies such as Bluetooth Low Energy (BLE), NFC, RFID (High Frequency and Low Frequency) etc. Well, how do they function? It would be hard to digest if we tell story as of today. So, why don’t we flash back to yesterday？ In the end of 1990s, some high-end car models phased in a remote keyless entry (RKE) system an evolution over the earlier IMMO (immobilizer) solution based on low frequency RFID (125KHz). As a predecessor of the PEPS, the RKE has the key fob to transmit UHF（ultra- high frequency）signals to a RF receiver connected with the BCM (body control module) of the car to verify user identity. Once the ID is verified, the system will execute an open/close-door action driven by the BCM. Such a one-way verification mechanism as shown in Figure 1 can be interpret as an advance-set cipher in a spy movie. When a visiting secret agent comes to a meeting venue, he or she has to speak or show such a cipher. If the cipher is correct, he or she will be allowed in. The drawback of this mechanism is that once the enemy infiltrated and got the cipher, the venue will be instantly broken. Figure 1. Working Mechanism of RKE The RKE solution adopts frequency bands of 315 MHz (in USA, China and Japan etc.), 433.92 MHz (in Europe, China) and 868MHz (in Europe）. In term of signal modulation, most countries adopt the ASK (amplitude shift keying) mode, whereas Japan adopts the FSK (frequency shift keying) mode. IC vendors such as Silicon Labs, Maxim, Microchip and NXP etc. have offerings in this field. By early 21st century, people upgraded the one-way verification mechanism of the RKE to a two-way mechanism called the PKE (passive keyless entry) system, where the verification is n...

With the rapid development of automotive intelligence, digital keys are emerging as a global trend. Their deployment will transform travel and user experiences, reshaping the interaction between people and vehicles within the broader ecosystem. Digital keys, enhanced by Bluetooth® technology, transcend simple car access tools and serve as the initial connection in the smart car experience. Today, every new smartphone now comes equipped with Bluetooth digital key-enabling technology. This advancement enables users to seamlessly enjoy keyless entry, starting, locking, and other security features through their smartphones and smart devices. As a leading global provider of wireless modules and solutions, Shenzhen RF-star Technology Co., Ltd. (RF-star) was honored to be interviewed by Lori Lee, APAC Marketing Director of Bluetooth SIG. During the interview, RF-star’s Marketing Manager, Ms. Qianqian Wen, shared valuable insights into the market trends of digital keys and highlighted the pivotal role of Bluetooth technology in the intelligent vehicle ecosystem. Furthermore, we are eagerly anticipating the upcoming release of the Bluetooth Channel Sounding feature, which we believe will significantly enhance the performance of digital key solutions. Bluetooth SIG's Interview with RF-star In recent years, the new energy vehicle market has grown rapidly. How do you view the importance of digital keys and market trends? The digital key serves as the first connection point for users to experience intelligent cars. At this connection point, security, reliability, convenience, and interactive comfort are all indispensable. The success of the digital key experience design is crucial for car user evaluations and plays a key role in deepening the connection with users. With the maturity of technologies like Bluetooth® Low Energy (LE), near-field communication (NFC), and ultra wide band (UWB), digital keys are entering a period of rapid growth, and integrated solutions will become the market mainstream. What are the technological advantages of Bluetooth technology in digital key solutions? RF-star chose Bluetooth® technology to develop car digital key solutions, primarily because of its low power consumption, high reliability, and broad device compatibility. Bluetooth technology provides stable wireless connections and supports various smart devices like smartphones and smartwatches, enabling users to remotely control vehicles through these devices for keyless entry, starting, and other functions. Additionally, Bluetooth technology’s low power consumption helps reduce operating costs. RF-star also values Bluetooth technology’s iterative capabilities. For example, the upcoming channel sounding feature improves the positioning accuracy of Bluetooth Digital Key solutions and protects the system from relay hijacking. It may become a cost-effective preferred technology in the digital key domain in the future. With the upcoming release of the Bluetooth Chann...

Here comes intelligent irrigation! What are the differences between traditional irrigation and intelligent one? Save water Save energy Save labor Remote control Real-time soil moisture monitoring Easy installment With wireless technologies such as Wi-SUN, Sub1G, LoRa, LoRaWAN, agriculture will become more and more intelligent.