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opinions on reasonably cheap mmWave radar module?
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dkim5nu:
I was looking into this chip for application of measuring speed of nearby objects, something that works similarly to a chronograph, except velocities that exceed 4000 ft/s or more than 1000 m/s. Do you think these chips can pick up things moving at these velocities upto the range that they specify it works?
GadgetGoof:
Could someone recommend a radar for human following robot? I want to install it on Arduino-controlled RC car, so it follows me without using remote control. I thought about putting several radar modules together and comparing signal strength, or even showing a map with obstacles. And yes, I know it's more complex than that.
AVGresponding:

--- Quote from: GadgetGoof on December 26, 2023, 12:39:52 pm ---Could someone recommend a radar for human following robot? I want to install it on Arduino-controlled RC car, so it follows me without using remote control. I thought about putting several radar modules together and comparing signal strength, or even showing a map with obstacles. And yes, I know it's more complex than that.

--- End quote ---

Have a look at this, it may be something like what you're after: https://youtu.be/TpnBQ9bW4K8?si=ItCTamYOPOTrSQdW&t=490
GadgetGoof:
Thanks, Bluetooth based positioning looks promising. Haven't seen such devices before..
MathWizard:
How would detecting a human at a few meters with ultrasonics, or a thermal camera, compare to this mm RADAR ? I know the wavelengths are way different, but somehow they can get a lot of resolution with ultrasonics, like an ultrasound. There's tons of data processing that goes into it.

I could use radar in front of my fridge.


I was expecting the radar units in links above to cost a lot more. Some day I'll have to get one. So far I haven't tried my ultrasonic units with Arduino, too busy with other projects.
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