Comments on: ESP8266 NodeMCU with RCWL-0516 Microwave Radar Proximity Sensor (Arduino IDE)

By: Rene Haberlender

Rene Haberlender — Mon, 11 Mar 2024 15:57:00 +0000

Hi there,

have tested the RCWL-0516 and it works fine. The problem ist the frequency at 3,19 GHz that “collide” with european Transmitter-Restrictions. The transmitter-power-out of 20mW is not the problem, the restrictions is the problem.

Like to ask if the RCWL-0516 can operate at a lower frequency at 2.400 – 2.450 GHz? This slot is free of restrictions and can be used for “Low-Power Motion-Detectors”. Maybe adjusting R/C-components could set the oscillator at a alternativ frequency.

Thanks for reply and suggestions about this…

Rene

By: Manfred

Manfred — Tue, 06 Feb 2024 09:39:43 +0000

Hi Sara,

there are different versions of the NodeMCU Boards like LUA Lolin V2, LUA Lolin V3 or LUA Amica Modul and some types more. Is there any known problem to use different boards? Is there a “favorite” board should be used for this workshop-sample?

Thanks for reply and best regards,
Manfred

By: John McMahan

John McMahan — Sun, 03 Sep 2023 12:57:03 +0000

Would love to see a Doppler radar that would allow ranging. SR-04 works ok but slow. Enjoy your work. Thanks.
John McMahan

By: Tim

Tim — Fri, 01 Sep 2023 21:40:17 +0000

Hi
Great articles thanks.
Do you know if there is a sensor for detecting objects under water (in the ocean)?
Thanks
Tim

By: Sara Santos

Sara Santos — Tue, 22 Aug 2023 09:44:16 +0000

In reply to Eduardo Alcoforado.

Hi.
Thanks for your comment.
The same happened to me. The sensor worked much better with Arduino than with the ESP32 or ESP8266.
I think the culprit might be the power supply. Maybe trying to power the sensor with an external 5V power source would give better results.
Regards,
Sara

By: Eduardo Alcoforado

Eduardo Alcoforado — Mon, 21 Aug 2023 00:55:52 +0000

As always, excellent post. I have tried use this sensor before, but it didn’t worked as well as it worked when I tried this tutorial. Also, thank you very much for the session “Adjustment components”, I didn’t know about these extra resources!

By: Bob Found

Bob Found — Thu, 17 Aug 2023 15:56:29 +0000

I have a few sensors that work when I wave my hand in front of them. The trick is to get them to work for moving vehicles. 2m/s is a fast walk, so this device only good for pedestrian traffic. Do you have something that is faster, eg for up to 80 kph?