πΆ
HLK-LD1040 Radar
Sees movement through plastic
Page 63 reads the HLK-LD1040 over UART: motion present or not, target distance and radial speed, plus a short history of detections.
At 10.525 GHz the microwaves pass through plastic and thin wood, so it can sit inside an enclosure and still work β immune to light and temperature.
Screen
On-screen interface
A recreation of this page on the 2.41-inch AMOLED display (600 Γ 450). Actual interaction and layout follow the latest firmware.
TargetMotion3.2 m Β· approaching
Radial speed0.8 m/s
Triggers27 today
Penetrationworks behind plastic/thin wood
Health90
Motion only β static targets read empty
Screen Β· Page 63
May differ from the actual interface; the screen of the real device is the final reference.
Highlights
Key capabilities
πΆ
Motion sensing
Triggers on movement; stillness reads empty.
π
Range and speed
Approximate distance and radial velocity.
π§±
Penetrating
Works behind plastic, wood and glass.
π©Ί
Health score
No data vs always-triggered separated.
Specifications
Technical specs
Frequency10.525 GHz Doppler
InterfaceUART
DetectionAbout 5β8 m, sensitivity configurable
Firmware pagePage 63
Use Cases
Typical scenarios
Light on entry
Switch a lamp when movement is detected (page 40).
Hidden install
Keep the sensor inside a plastic housing.
Commands
Related commands
page 63 Open the LD1040 page radar Read the current detection
β Boundaries & notes
- Motion only β someone sitting still may read as empty.
- Fans and moving curtains trigger it; choose the mounting spot carefully.
- It cannot work inside a metal enclosure.
Other feature pages
π Overview Home12-tile quick launch plus everyday toggles β the power-on default, and where everything starts.β‘Dashboard Β· Power & ConsumptionBLE-connected current meter with live voltage/current/power curves at fixed-point 10βΆ precision.πWaveform PanelLive curves for frame rate, heap and task load β spot the bottleneck at a glance.π΅BLE DebuggerBLE scan/connect/service discovery with full GATT tree browsing and read/write.