Motion lamp
A PIR sensor lights the lamp and holds it on for three seconds after the last movement.
hc_sr501led
Sensor
HC-SR501 PIR motion sensor (3-pin header)
hc_sr501GPIO3.3 V logicChecklist
Why this support circuit is added
Powered from 5 V (onboard 3.3 V regulator) but OUT is 3.3 V logic: direct to a 3.3 V MCU, and a 5 V MCU reads it as HIGH. No library reveals it in code — add it from the checklist.
Grounded in the catalog and golden patterns (real open-source circuits). Every auto-inserted part comes with a reason.
Support circuit added automatically0
No extra support circuit for this part — only the board rail and the connector are wired.
InterfaceGPIO
- Catalog id
- hc_sr501
- Category
- Sensor
- Protocol
- GPIO
- Logic level
- 3.3 V
Firmware detection0
No library reveals it — add it from the module checklist in your project.
Checklist partChecklist
Code alone can't reveal this part, so it lives on the module checklist. When added, it is bound to a free sketch pin with a matching direction.
Examples using this part
Run them in the browser, no login needed.
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A clock that wakes when someone walks up
The DS3231's time shows on a 4-digit display, but only while the PIR sees someone.
ds3231_i2chc_sr501tm1637