md5008 help

[jack]

Hello everyone

I made md5008. I have information about this metal detector coil and made it.
But my machine md5008 made is not set. Psch small wire it (rx) is not set in the center.
Please PM me for this metal detector can help.
With respect
jack

[jack]

please help me for coils md 5008

[rajesh]

md 5008

(1) Emission Frequency: 6.99kHz
(2) Signal Frequency: 437Hz
(3) Weight: 2.87KG
(4) Sensitivity: Small coil: 25~30cm (test 25US cent)
Big coil: 35~40cm (test 25US cent)
(5) Max Detection: Small coil: 1.5 meters
Big coil: 3.0~3.5 meters
This conclusion is elicited by testing a aluminium sheet (60cm*60cm*1cm) buried in dry soil.
(6) Power Supply: 8PCS 1.5V Batteries
(7) Operation Mode: Ground balance mode; Discrimination mode.
have you more image or pcb layout schematic