With the continuous development of the Internet era, a large number of funds flow into the online transactions. Then some problems come, eg. the servers are attacked and damaged by numerous hackers every day, and the security of online funds is extremely vulnerable. To solve these problems, many currency encryption solutions have emerged, such as the hardware wallet application using the nRF52840 chip, which provides a solid security guarantee for currency transactions. Secux V20 is a hardware wallet of encryption assets using nrf52840 chip, which is used to protect the private key and pin code that users need to perform the encrypted currency transaction safely. Cryptocurrency investors use private keys to confirm the transaction through online transactions. General users are used to storing the private key and pin in software wallets. This form of wallet is very convenient, but it is very vulnerable to malicious attacks. If Secux V20 is used, the user's key will be stored and isolated in the security component chip with 5 + level authentication of CC eal. When a user wants to make a transaction, Secux V20 can use the BLE connection provided by nRF52840 SoC or pair it with a Bluetooth-equipped mobile phone, tablet, or PC through a USB connection cable. Nordic nRF52840 multiprotocol system on chip is an ultra-low power consumption and highly flexible single-chip solution. nRF52840 SoC is the only multi-protocol system on chip on the market that supports the coexistence of Bluetooth 5.0 and Thread and has the dynamic multi-protocol function of BLE and Thread. The nRF52840 SoC USES a 32-bit 64MHz Arm® architecture ™ -m4f CPU, and is integrated with 1MB of flash memory and 256kB of RAM, providing sufficient space for storage operations. The nRF52840 SoC uses excellent power and resource management to maximize application efficiency and extend battery life. All peripherals have independent automated clock and power management functions to ensure that the chip is powered off when the task operation does not require it, thus minimizing power consumption without requiring applications to execute and test complex power management solutions. nRF52840, with on-chip NFC™ -a tag support, opens up A whole new range of applications, such as NFC payments, that improve the user experience for existing BLE applications through out-of-band (OOB) pairing. By using NFC for OOB pairing, authentication information can be exchanged over an NFC link, simplifying the authentication pairing process between two bluetooth devices. Based on this, nRF52840 modules may ultilize in a great deal of  IoT applications. RF-star popular Multi-protocol Modules RF-BM-ND05 and RF-BM-ND06 embeded nRF52840 chip are widely used in wearable devices with wireless payment functions, NFC payment, and customized applications. It is believed that nRF52840 modules will perform better in NFC applications. If you are looking forward to know more about the nRF52840 modules o...

The Bluetooth water meter is a prepaid water meter that uses the Bluetooth communication technology to interact with the outside world. The Bluetooth communication module is embedded in the IC card meter, which can not only be compatible with all the functions of the IC card meter, but also realize the communication function with the water meter and the software platform through the mobile phone APP. The BLuetooth Technology built a data channel between the water meter and the software platform, and realized wireless recharge and wireless data transmission. Main Features APP purchases water at any time Buy it if you want. APP automatically uploads the meter reading, and the data is automatically uploaded to the software platform after the mobile phone is connected to the water meter. APP wireless recharge is convenient and fast, no need to be close to the water meter, and the recharge can be realized within 10 meters of the mobile phone and the water meter. APP is clear at a glance, user-friendly, visual design, easy to understand.

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...