HB100 Radar speed detector

What are you developing?
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RogerClark
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Re: HB100 Radar speed detector

Post by RogerClark » Sat Aug 26, 2017 8:43 pm

Andy

You probably won't need it if you move to somewhere people are not speeding past ;-)

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ahull
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Re: HB100 Radar speed detector

Post by ahull » Sun Sep 03, 2017 10:36 am

Related, but slightly off topic in that it uses a slightly different module, upon which the HB100 *may* be based.

- Andy Hull -

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RogerClark
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Re: HB100 Radar speed detector

Post by RogerClark » Sun Sep 03, 2017 9:20 pm

Thanks Andy,

That device looks like a better quality version of the HB100, and like yiu say.... the HB100 design is probably based on that one.

the key difference is the big reflecting ground plane and the separate antenna PCB


the current status of my HB100 project is that I am getting too much noise from the USB 5V and this is making the system unusable.

i bought the components to rebuild the audio frequency amplifier, but have not had time to build it.
The new circuit uses a low noise, rail to rail, dual opamp, which is run from a separate 3.3V regulator.

To attempt ti remove the supply noise, I was also thinking of using an isolating DC to DC converter, just because I have several of them in my box of spares

But the separate 3.3V regulator may be enough on its own.

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Pito
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Re: HB100 Radar speed detector

Post by Pito » Sun Oct 01, 2017 7:11 am

Pukao Hats Cleaning Services Ltd.

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