CQRobot 10.525GHz Doppler Effect Microwave Motion Sensor Compatible with Raspberry Pi and Arduino Motherboard. for Industrial, Measurement, Automatic Doors, Smart Lights, Reversing Radar, etc.

THIS ROCKS. 10/10. For the 10ghz model. Make sure to twist the physical knob more in the middle for range, it comes dialed all the way down out of box and if you're over eager and wire and code a test w/o reading the instructions you'll miss that crucial step. Lastly make sure you understand the positioning described for how to aim it. It's not hard but again if you skip the step your readings will be all over and it's not the device it's your lack of aim for it. Works extremely well and super fun and great price and great documentation (when you stop to read it lol). Bravo. P.S. tip to seller for "6 star" product lol, dial the sensitivity dial half way before shipping it works better out of box for the basic "does it really work!?!" test. Second, would be cool to print on the board an arrow with tiny text to the effect of "point this way" (and we know that means the target area for the sensor). Minor suggestions ! Love the device and seriously want to order so many more.

Nice module. I have the 10Ghz unit. Very easy to test, all you need is a 5v power source. I did have glitches on the detection if I used the Arduino's power, so I used a battery with the grounds connected. The test code for Arduino is available on the CQROBOT WIKI. The code will detect the amount of movement detected. Basically it detects if someone or something is moving, and has a range adjustment to control the distance. It seems quite sensitive to the main beam coverage. Movement will make the LED blink on the back of the module. You could hook this up to a warning light, alarm, or trigger a camera for security, with additional circuitry.

This works but I have trouble with it picking up the 433HMz transmitter that I use to communicate to the base station. I have tried to disable it during the transmit with limited success.

I've been playing with these radar modules of different types for the last couple years and had high hopes but somewhat dissapointing

I just ordered this, it seems like. I'm qualified enough to incorporated into my robotic system. Honestly, the simple concept of this device in this size I'm sure we'll be seeing more similar devices. With many different uses. I just received the board. My plan Is by using four of them behind drywall to make a hallway impossible 2 Get through without detecting motion. These things work perfect for hidden motion sensor. I will update more opinion when im further along in my projectin the project.

The device appears to be well built. The instructions are not very clear but the operation is fairly obvious. One thing not mentioned in the ad is that the module outputs a roughly square wave which is the digital version of the Doppler signal. It is unsuitable to directly drive a relay. You need a one-shot or the digital equivalent using a micro controller if you want to drive a relay. On the other hand, by measuring the frequency of the signal, you get an idea of how fast the object is approaching or going away. The antenna pattern is not omnidirectional. The beam is narrower in the plane of the longest dimension. But I found that sensitivity is still good at almost 90 degrees from the main axis of the sensor (I was detected at 10-15 feet coming off the side when adjusted to the highest sensitivity), so that may be enough for many applications. I like that it has 4 mounting holes and comes with the connector and wire harness and LED indicators.

I have the board, and it was shipped in another package. All is great!

Excelente

Werkt boven de verwachting . Kan onzichtbaar opgesteld worden .

It does what it suppose to do

The device has two large, easy to use, mounting holes.

J’adore les composants CQRobot. Ils sont innovants, faciles à utiliser. Ce radar fonctionne à merveille pour détecter une présence au travers d’une porte par exemple. il se branche avec 3 fils au niveau de l’arduino, comme un détecteur infrarouge. Sauf que celui là est plus précis et permet de détecter les mouvements au travers des objets / murs L’emballage du kit est super soigné avec emballage antistatique et boite en plastique pour éviter au module d’être écrasé pendant le transport. A acheter les yeux fermés, c’est de la très bonne qualité.

Deze sensor heeft een groot bereik en is heel gevoelig. Het instellen van de gevoeligheid/afstandsbereik komt zeer nauw; een kwart draai maakt meters uit. Werkt goed op Sparkfun Samd21 Mini (3V) en ook op Arduino Uno (5V). In vergelijking tot infrarood sensors werkt deze bewegingssensor veel beter, ook als het zich binnen een (plastic) behuizing bevindt. De documentatie kan beter. Het code voorbeeld werkt niet op een Sparkfun Samd21 mini omdat het in het voorbeeld gebruikte MsTimer2 object niet gebruikt kan worden. Je kan echter een gewone interrupt functie "attachen". Aan te bevelen dus !