The Rd-01 from Ai Thinker is a high sensitivity 24GHz human presence sensing module designed around the Iclegend S3KM111L chip, with included WiFi and Bluetooth 5.0 functionality. The radar sensor operates primarily based upon the principle of FMCW (Frequency Modulated Continuous Wave) to detect human targets in a set space. Radar signal processing and accurate human body sensing algorithms allow a high level of sensitivity when detecting bodies that are either in motion or stationary – a big step up from your standard PIR sensors. Approximate distance to the target can also be calculated using the data received from the radar sensor. Reaching up to a maximum sensing distance of 3.5 meters (ceiling mounted) or 5 meters (wall mounted), this sensor is primarily used indoors to output results in real-time.
Features / Specs
- Manufacturer: Ai Thinker
- Model: Rd-01
- mmWave Sensor Chip: Iclegend S3KM111L
- Radar Frequency Band: 24 ~ 24.25GHz (Complies with FCC and CE Certification Standards)
- Modulation: FMCW (Frequency Modulated Continuous Wave)
- Sensing Distance (Typical): 3.5 Meters (Ceiling Mounted) / 5 Meters (Wall Mounted)
- Sensing Angle: ± 60°
- Supply Voltage Range: 3.0 – 3.6VDC (Rated @ ≥500mA)
- Output and Logic Level Voltage: 3.3VDC (Supply dependent)
- Operating Temperature Range: -40°C to +85°C
- Communication Protocol: UART (Default Baud Rate = 115200)
- SMD Pad Pitch: 2.0mm
- Connector Socket Dimensions: 6-Way; 1.25mm Pitch
- Dimensions: ~(35mm x 18mm x 3.6mm)
- WiFi Frequency Band: 2400 ~ 2483.5MHz
- WiFi Bandwidth: 20Mhz; Highest Rate of 72.2Mbps
- WiFi Protocols: IEEE 802.11 b/g/n
- WiFi Security Modes: WPA / WPA2 Personal / WPA2 Enterprise / WPS / WEP / WPA3
- Wireless Network Modes: Station + BLE / Station + SoftAP + BLE
- Bluetooth Protocol(s): 5.0 / Bluetooth Mesh
- Antenna Connector: Male IPEX Socket (1st Gen)
- Microprocessor: 32-bit RISC CPU with 276kB RAM
- Security Features: Secure startup (supports the use of ECC – 256 signature image) / Supports QSPI/SPI Flash instant AES decryption (OTFAD) (AES 128 CTR Mode) / Supports AES 128/192 Bit Encryption Engine / Supports SHA-1/224/256
- Other Features: TRNG (True Random Number Generator) / PKA (Public Key Accelerator) / Supports a variety of sleep modes / Supports secondary development (integrated with Windows / Linux dev environment)
- Hardware Features: SPI / UART / I2C / PWM / ADC / GPIO