LD2410 Human presence radar sensor

[Fernando Perez]

Peter, the model marked on the printed circuit board is:
HLK-LD2410C-V1.0
And it seems to respond in the Tool program with 256,000 baud.

https://mega.nz/file/HO52SLrb#3Ool3lGfe ... 0MeebZ_0-Q

image.png

[PeterN]

Seems to be the same tool for version B and C.
I used some special sequences to bring the module to engineering mode. Found that in the protocol description. Tried to find that for C-version too now - but ...
The website of https://www.hlktech.com/ throws sql exceptions at the moment.

[Fernando Perez]

Don't bother Peter, I'm actually involved with another project right now and I wanted to finish it before I messed with these boards. But they have arrived to me this morning and the irresistible temptation of "a new gadget" has been able to me. And they seem like a great invention!

[Fernando Perez]

Good news! Everything works correctly with no other changes than connecting RX and TX to other pins.
I was using a Nodemcu ESP32-S and I have assigned RX-pin = 12, TX_pin = 14, with this result:

https://mega.nz/file/eCYlzbSK#JgtxhmDEC ... Dvqbl_U7Qk

Gracias, Peter.

[PeterN]

Fine that this works as expected now
Would be very interesting now to connect that radar device via bluetooth to an ANNEX32 equiped ESP32.
The LD2410 documentation about that ist poor. But I guess the protocol is just the same as via the wired serial connection.

[RonS]

Good news! Everything works correctly with no other changes than connecting RX and TX to other pins.
I was using a Nodemcu ESP32-S and I have assigned RX-pin = 12, TX_pin = 14, with this result:

https://mega.nz/file/eCYlzbSK#JgtxhmDEC ... Dvqbl_U7Qk

Gracias, Peter.

runs for me too