Oiyagai 2pcs AM312 Mini Pyroelectric PIR Sensor Module Manual Motion Infrared IR Detector SR301

Product Information

optional: Before using rules configure any GPIO that doesn't have anything connected to it as Relay1. sleep() call can be replaced by wait() call if node need to process incoming messages (or if node is repeater) when the motion sensor is triggered or the button is pressed all outputs should turn on. if the button is pressed again, outputs should turn off. For this example will be using the RISING mode, because when the PIR motion sensor detects motion, the GPIO it is connected to goes from LOW to HIGH. Introducing Timers If you want to put the multisensor enclosure in a corner, or with a 45 degree angle on the wall, print my Multisensor wall support. The wall support is designed to improve ventilation compared to mouinting directly onto a wall.

You can upload this code to your ESP32 and assemble the following schematic diagram to test it and modify the number of milliseconds to see how it works. Sound detection is useful to measure ambient sound level. You won’t get an accurate dB-measurement, but an approximation. You can work with the values and thresholds to create custom notifications. The BOB-12758 (SparkFun Electret Microphone Breakout) mic with preamp is supposed to be more sensitive than the KY-037 and KY-038 alternatives. Its also smaller, and the KY-037 and KY-038 won't actually even fit the enclosure easily. In the bigger garage room, it works perfectly - when there's enough power for the entire node - the converter on the pro mini seems not to supply enough power to get the RS485 chip working sufficiently in all situations. There it's placed on a side wall - no detection, when passing outside, but opening the front door is detected pretty reliable, in some cases, one has to do one step into the garage, detection angel is 80+ degrees . PIR Human Motion Module 10*8mm 2S delay time SB00322A-1 - Nanyang Senba Optical And Electronic, China

Wrapping Up

For the PIR motion sensor (AM312), if I comment out the temperature/humidity sensor when I upload the config and the NodeMCU reboots, absolutely nothing comes out. It’s like I programmed an empty config file to the thing or something. Possible reasons include: forgot pullup/down resistor, too noisy (from microwave oven, induction cooker for example, cable too long, cable not shielded, power noise (due to power hungry BlueTooh, Wifi, solution is turn them off or heavily by pass/decouple Rpi USB) So I think the docs should be updated at least to show images/pinouts on an am312 instead of a 501. For simplicity, in this example we use a delay to keep the LED on for 20 seconds. Ideally, you should use timers. Demonstration

The motion variable can only become True again, if motion is detected and the handle_interrupt function is called. I've got some AM612 too, with extra setting for active duration & sensibility, and an OEN pin to enable output based on analog signal (on datasheet example they use it with a photoresistor). If I believe the very similar detection profiles in the datasheets it's the same sensor but the AS312 has settings hardwired in the "can". For the temperature/humidity sensor, I tried moving the input pins around, I tried using the DHT22 model instead of the AM2302. I tried powering the sensor from the 5V line instead of the 3V line. It seems to always say those two messages, every thirty seconds. Take a look at the AM2302 temperature sensor offset value. Use the offset value to calibrate the sensor to counteract the fact that the temperature sensor is co-located with electronics that generate (a stable amount of) heat. Really useful for fastening a couple of sensors in this design, and also a life saver at home for other stuff.A 20K Ohm resistor (R2) in series with the logic output limits the available output current so it can only really drive a logic input or a very low gate voltage mosfet. Using a function called millis() you can return the number of milliseconds that have passed since the program first started. millis() If you don’t use Wagos, find a way to connect all sensors needing Vin and GND to the 3.3V and GND stripped wire, respectively. If handled well, the measures of above will significantly improve the performance. I suggest to test these suggestions one by one, starting with the first. Most of times, you don’t need to implement all to have a reasonable behavior.