Michael | Aug. 3, 2020

Ships from China

For HB100 Doppler Speed Sensor - Arduino Compatible

You say that you ship from Switzerland. So I payed for that. But I received the shipping information that my package will be received from China (Shenzhen). It usually takes much longer for packages to arrive from China. Strictly speaking, it would not be part of the sales contract. I need the sensor, so I'll have to wait. That is annoying. The shipping costs are therefore not conclusive and transparent for me. Especially since half of the order was almost the shipping costs.

Response from limpkin | Aug. 3, 2020

Hello!
We're very sorry you got that impression... in the HB100 product description is mentioned " Shipping will be done from Switzerland or Shenzhen depending on current stock and customer location."

Mohd | March 20, 2020

HQ Product, Fast Shipping, Useful Doc.

For HB100 Doppler Speed Sensor - Arduino Compatible

Hi limpkin,
first of all thank you for fast shipping, but i paid two shipping fee and get it in same box :)

I've question, in CODE you use "19" for HB100 , and for CDM324 use "44" ..

From where you get this constant??

Response from limpkin | March 20, 2020

Hi there!
Could you send me a quick message in private? I'll refund part of your other shipping fee... as this was due to 2 different orders on 2 different stores :).
The different values are because of their different operating frequencies! Have a look here: https://github.com/limpkin/cdm324_backpack/tree/master/datasheets_module

Thanks for your review!

Tanel | Nov. 18, 2019

Bernardo | Oct. 31, 2019

Very good!

For HB100 Doppler Speed Sensor - Arduino Compatible

Hello!
The hb100 that I bought you has good reading range. But the sensors that I get here in Argentina, are different and have little reading range, only 2 meters.
For example, yours is "ZH100" and those here are "MX100" or something similar.
Do they change anything?
The screw it brings, what is it for?
Would it serve to adjust the distance of the sensors that I get in my country?

Response from limpkin | Oct. 31, 2019

Hello!
I'm afraid I'm not familiar with these MX100...

Alexander | Dec. 1, 2018

questions about FOUT )

For HB100 Doppler Speed Sensor - Arduino Compatible

Hi... I recently purchased this module for detection moving people in the room.
External view of module is very good, and from VOUT output i have useful signal (>2.5V wheh i moved)
But I have a questions.
1) If I have not moving in room with your sensor, what sighal i have in FOUT ?
I think 0, but i have not null frequency.
2) And you in your speed measure's sample for arduino you connect FOUT to digital input of arduino.
But output FOUT of sensor is analog signal, isn't it ?
Why he is connected to digital input ?

Response from limpkin | Dec. 1, 2018

Hello,
1) You'll see noise on the FOUT output, which is why it is important to make sure that VOUT is relatively high to take into account FOUT.
2) FOUT is digital, VOUT is analog.
Would you modify your text content with a review? Thanks!