Read Sensor OUT data (PIR) from GPIO pins Jets Nano

Hi,

I am trying to read PIR data from GPIO pin 12. The pin always reads Low (unable to detect output)

hello vindhya.devalla,

may I know what’s the pin connections you’d wiring to Nano.
you may also refer to Jetson Nano GPIO Header PINOUT.
you should setup correct connections, please try to receive your sensor data with serial ports.
thanks

Thank you, but data from passive infrared sensor (PIR) is through a single pin (OUT) (the sensor just sends out high and low values) and I have connected that OUT pin to PIN 12 in Jetson Nano GPIO

hello vindhya.devalla,

you may refer to Pinmux spreadsheets, there’s GPIO pull down resistor.
could you please check your PIR sensor, it might be related to pd strength not enough to change the pin state.
please also refer to similar discussion thread, Topic 115752 for reference.
thanks

Hi,

I have tried out the connection mentioned in Topic 115752 but it still not giving any output/ level change.

There is no update from you for a period, assuming this is not an issue any more.
Hence we are closing this topic. If need further support, please open a new one.
Thanks

How do you try the connection in topic 115752? Can you please share a photo/diagram of your connection? Also what’s the pull-down/pull-strength of the OUT pin of your PIR?