Rock hunting #9
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Love the idea and the finished device. How do you get power to the ESP? Are you using batteries or a powerbank? |
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The ESP is a Lolin D1 mini pro with included battery connector and charging circuit. A small Lipo sits between the Mini SiD and the veroboard and the Mini SiD is easily being powered thru the ESP. Battery charging via USB |
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I`ve just finished a unit that incorporates a rotary encoder for threshold adjustment and utilizes a 40 mm dia x 40 mm NaI(Tl) scintillator coupled to a 2x2 SiPM array (MICROFC-60035-SMT-TR). With around four times the scintillator volume compared to my first unit, the sensitivity is significantly improved. |
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When looking for radioactive rocks in the wild, I always found it annoying to keep my eyes on the display of whatever gamma detector I was using. Concentrating on small changes in click rate is also less than ideal.
![circuit](https://private-user-images.githubusercontent.com/9314230/244952243-c12baa63-0600-466f-bf91-ce570aeefca9.png?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.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.fEvMy0N8O3DZ5aaqaSlmvA28TDYEzM3r--hGZakPhRw)
On the other hand, the human brain / ear can easily and subconciously detect very small variations in tone pitch.
So I hooked up the Trigger/TTL output of the Mini SiD to an ESP 8266 programmed as a voltage controlled oscillator:
The sketch for the ESP 8266 is also very simple, I'm sure there is lots of room for improvement:
The output (pin12) of the ESP 8266 is connected to a passive piezo buzzer.
This is the result:
![IMG_20230610_132240](https://private-user-images.githubusercontent.com/9314230/244953211-e5ef9912-c9f8-4687-afbd-ae86f4e5900f.jpg?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.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.rRw2rdxvsYeeXvn5Ewo2EJyhWBLHgd8YNFGaEs4fq74)
VID_20230611_185616.mp4
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