Damping Resistor and O-scope

[Impulse]

Hi guys i have a barracuda pi and i want to set the damping resistor just right i have a spare 10k pot (i will put i 330ohm in to prevent a short) and i have a Hantek 6022be scope basic i know but its what i have. How do i connect the scope to the board and coil, in the correct place to adjust the resistance live so i can asertain the correct value? and what am i looking for either under damped vs over damped?

i am very new to this but want to learn that is why i am asking the guys in the know.



this is a pic of my board (as my skill runs out after the soldering and connecting the battery) if i dont get/understand what you mean please feel free to draw and point out locations as im no expert.

Thank you in advance for any help

[Qiaozhi]

i am very new to this but want to learn that is why i am asking the guys in the know.

I know I have a vested interest, but this is one case where getting a copy of ITMD would definitely pay dividends.
Inside the METAL DETECTOR - Second Edition - Published 2015

[jladre]

Hi guys i have a barracuda pi and i want to set the damping resistor just right i have a spare 10k pot (i will put i 330ohm in to prevent a short) and i have a Hantek 6022be scope basic i know but its what i have. How do i connect the scope to the board and coil, in the correct place to adjust the resistance live so i can asertain the correct value? and what am i looking for either under damped vs over damped?

i am very new to this but want to learn that is why i am asking the guys in the know.

[ATTACH]35251[/ATTACH]

this is a pic of my board (as my skill runs out after the soldering and connecting the battery) if i dont get/understand what you mean please feel free to draw and point out locations as im no expert.

Thank you in advance for any help

Your damping resistor look like 33 ohms..it must be 330 ohms or as good value after tuning.