SparkFun
SparkFun Qwiic PIR - 170uA (EKMC4607112K)
Passive Infrared (PIR) sensors are great for detecting motion in a small area around the sensor. The 170µA SparkFun EKMC4607112K Qwiic PIR uses an EKM-series...
Passive Infrared (PIR) sensors are great for detecting motion in a small area around the sensor. The 170µA SparkFun EKMC4607112K Qwiic PIR uses an EKM-series PIR sensor from Panasonic® paired with an ATTiny84 to interact with it using I2C with the Qwiic system. The EKM-series PIR sensors are optimized for small movements to offer motion-sensing options for continuously powered applications.
PIR sensors do not return specific distance data but instead monitor for IR light coming from objects in their field of view and will activate their signal when motion is detected in their sensing area, making them perfect for applications such as turning devices on automatically when motion is detected. Applications include home and building automation for energy saving, automated on/off lighting control, security, appliances, and IoT.
Panasonic's low-profile PIR motion sensors (10.9mm versus standard 14.4mm height offer space savings for constrained designs) consist of a lens to create various detection zones, an optical filter to block non-infrared light, pyroelectric sensing elements, electromagnetic shielding to all circuitry, and an impedance converter to get an electrical signal. This PIR sensor offers digital output across 32 zones at 5m detection distance with 90° x 90° detection area.
Note: The sensitivity of passive infrared sensors is influenced by environmental conditions, so a performance evaluation test under representative conditions is recommended.
The SparkFun Qwiic Connect System is an ecosystem of I2C sensors, actuators, shields and cables that make prototyping faster and less prone to error. All Qwiic-enabled boards use a common 1mm pitch, 4-pin JST connector. This reduces the amount of required PCB space, and polarized connections mean you can’t hook it up wrong.
Features:
- Default I2C address 0x12 (Alternate 0x13 selectable by solder jumper)
- 2x Qwiic connectors
- 2x3 header on the back of the board for reprogramming the ATTiny84
- Lens diameter - 10.4mm
- Lens Height - 10.9mm
- 170µA standby current consumption
- 5m detection distance
- 90° x 90° (±45°) detection area
Documents:
- Schematic
- Eagle Files
- Dimensional Drawing
- Hookup Guide
- Panasonic PIR Motion Sensors - Product Brief
- EKMB110711x Spec sheet
- Qwiic Info Page
- Arduino Library
- Python Library
- GitHub Hardware Repo
Videos
Jargon buster
Plain-language definitions for the technical terms used above.
- IoT
- Short for Internet of Things, meaning physical devices that connect to networks or the internet to send data or be controlled remotely. It matters if you want projects such as connected sensors, remote controls or classroom data-logging activities.
- PCB
- A printed circuit board is a rigid board with copper tracks that connect electronic parts without loose wires. For this kit, the PCBs also form the airplane shape, so they are both the circuit base and part of the finished model.
- PIR sensor
- A passive infrared sensor detects changes in heat, usually from a person moving across its view. It matters because PIR sensors are common for lights and alarms, but they can miss people who are present but not moving much.
- Qwiic
- Qwiic is a plug-in connector system for I2C devices that uses small 4-pin cables, so you can connect compatible sensors without soldering. It matters because your controller or adapter also needs Qwiic, or you will need a cable or breakout to wire it up.
- solder jumper
- A solder jumper is a small pair or group of pads on a circuit board that can be bridged or cut with solder to change a hardware setting. It matters because changing modes may require careful soldering rather than just changing software.
Find this product in
Sensors & Input
SparkFun PIR Breakout Schematic
Schematic · 77.5 KB · Click any page to view full size
SparkFun Qwiic PIR Schematic
Schematic · 96.5 KB · Click any page to view full size
Panasonic PIR Motion Sensors Product Brief
Product Brief · 3.0 MB · Click any page to view full size
EKMC460711xK PIR Sensor Datasheet
Datasheet · 633.7 KB · Click any page to view full size
Supplier page — sparkfun.com
Supplier Description · 669.7 KB · Click any page to view full size
Resources & Downloads
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