mmWave C4001 24GHz Human Presence Detection Sensor (25 Meters, UART)
24GHz FMCW millimeter-wave sensor detecting human presence and motion up to 25m via UART. Strong anti-interference; supports flexible installation orientations.
Pinout
- VIN1
Power supply input, per DFRobot SEN0609 wiki pinout definition
Type · PowerVoltage · 3.3V or 5V operating supply per DFRobot SEN0609 wiki specification - GND2
Ground, per DFRobot SEN0609 wiki pinout definition
Type · GroundVoltage · 0V - RX3
Sensor serial port receive, per DFRobot SEN0609 wiki pinout definition
Type · UARTVoltage · UART logic for 3.3V/5V supply context - TX4
Sensor serial port transmit, per DFRobot SEN0609 wiki pinout definition
Type · UARTVoltage · UART logic for 3.3V/5V supply context - OUT5
Voltage output for presence/motion signal, per DFRobot SEN0609 wiki pinout definition
Type · GPIOVoltage · Output level in module supply context
| Pin | Position | Type | Function | Voltage |
|---|---|---|---|---|
| VIN | 1 | Power | Power supply input, per DFRobot SEN0609 wiki pinout definition | 3.3V or 5V operating supply per DFRobot SEN0609 wiki specification |
| GND | 2 | Ground | Ground, per DFRobot SEN0609 wiki pinout definition | 0V |
| RX | 3 | UART | Sensor serial port receive, per DFRobot SEN0609 wiki pinout definition | UART logic for 3.3V/5V supply context |
| TX | 4 | UART | Sensor serial port transmit, per DFRobot SEN0609 wiki pinout definition | UART logic for 3.3V/5V supply context |
| OUT | 5 | GPIO | Voltage output for presence/motion signal, per DFRobot SEN0609 wiki pinout definition | Output level in module supply context |
Pin details
5 connections- VIN1
Power supply input, per DFRobot SEN0609 wiki pinout definition
PowerVoltage · 3.3V or 5V operating supply per DFRobot SEN0609 wiki specification - GND2
Ground, per DFRobot SEN0609 wiki pinout definition
GroundVoltage · 0V - RX3
Sensor serial port receive, per DFRobot SEN0609 wiki pinout definition
UARTVoltage · UART logic for 3.3V/5V supply context - TX4
Sensor serial port transmit, per DFRobot SEN0609 wiki pinout definition
UARTVoltage · UART logic for 3.3V/5V supply context - OUT5
Voltage output for presence/motion signal, per DFRobot SEN0609 wiki pinout definition
GPIOVoltage · Output level in module supply context
Start wiring
I2C · SPI · Single data line · 3.3 – 5 V · Breakout
Pimoroni describes its VL53L1X breakout as a compact time-of-flight distance sensor with I²C address 0x29, 4–400 cm range, 27° field of v…
Module pins: VIN, GND, RX, TX. Schematik maps them to your board in the app.
Distance sensors
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