Re: Radar Doppler Shift Motion Detector
Posted: Fri Jul 07, 2017 1:57 pm
I'm only used the radar sensors Vin from the 5v pin of the Wemos D1 Mini.
Also similarly from the 5v (input) pin of the Ser Dev Kit 202 module.
Basically, any module with 5v usb connector is probably going to have a 5v pin somewhere - even if originally intended as an alternative 5v input - but will still connect to the usb 5v.
The 3v3 pin is actually just a low current 3.3v output (not input - I've tried!) which is not sufficient to power an esp, so is not really useful for much.
I have had such impressive results with the module that I haven't yet felt the need to seek max performance, although I would expect that range and sensitivity could be increased even more by raising the modules supply voltage... but that would introduce the need for level-matching (can get away with 5v ok)
Also similarly from the 5v (input) pin of the Ser Dev Kit 202 module.
Basically, any module with 5v usb connector is probably going to have a 5v pin somewhere - even if originally intended as an alternative 5v input - but will still connect to the usb 5v.
The 3v3 pin is actually just a low current 3.3v output (not input - I've tried!) which is not sufficient to power an esp, so is not really useful for much.
I have had such impressive results with the module that I haven't yet felt the need to seek max performance, although I would expect that range and sensitivity could be increased even more by raising the modules supply voltage... but that would introduce the need for level-matching (can get away with 5v ok)