The smart lock is a rapidly growing trend in smart home appliances. Users can control smart locks by using fingerprints, Near Field Communication (NFC), capacitive touch, or low-power Bluetooth® communication. With a low-power design, Narrowband Internet of Things (NB-IoT) is also an option. As the RX130 32-bit MCU has integrated capacitive touch capabilities, it enables smaller board design and reduced cost. For advanced systems with more sophisticated fingerprint modules, an upgrade to the RX651 is an option for the algorithm design.

This solution can support Bluetooth communication with mobile or smart home routers. Additionally, the NB-IoT modem can directly support WLAN and directly send an alarm condition to the cloud.

System Benefits:

  • Highly integrated RX130 with built-in capacitive touch
  • Low power design for extended battery life
  • Shock sensor monitoring to alert for potential tampering and break-ins



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Diagram Connector Arrow.40 NB-IoT NB-IoT NB-IoT CN038 CN038 CN038 Touch Key Touch Key Sheet.66 Sheet.67 Sheet.68 Sheet.69 Sheet.70 Sheet.71 Sheet.72 Sheet.73 Sheet.74 Touch Key.75 Touch Key Touch Key Connector Arrow Buzzer Speaker speaker_8_ Sheet.50 Sheet.51 Sheet.52 Sheet.53 Buzzer Buzzer Buzzer Connector double arrow Op Amp Op Amp Op Amp MCU MPU.7 MCU MCU UART UART UART GPIO.11 GPIO GPIO CTSU CTSU CTSU SPI.13 SPI SPI UART2 UART UART UART3 UART UART ADC ADC ADC Fingerprint Recognition Module Fingerprint Recognition Module Fingerprint Recognition Module NFC NFC NFC BLE BLE BLE Connector double arrow.89 Connector double arrow.90 Connector double arrow.91 Connector Arrow.92 Op Amp.93 3.3V/3A LDO 3.3V/3A LDO Connector double arrow.96 Connector Arrow.98 Connector Arrow.99 Shock Sensor Shock Sensor Shock Sensor Connector double arrow.101 Connector 1.140 Connector Arrow.103 Connector 1.140.104 Connector Line 3.3V/150mA LDO 3.3V/150mA LDO 3.3V/150mA LDO 3.3V 3.3V 3.3V Connector Arrow.107 Connector Arrow.108 Connector 1.140.109 Battery.27 Sheet.112 Sheet.113 Sheet.114 Battery Battery Battery 3.3V.116 3.3V 3.3V
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