Garrett XL-200

[homefire]

Try a different resister here to raise levels.

[reptooyep]

This is a good idea. I'll test this.

[reptooyep]

Hi,
I've made a SMD version of XL 200. The board is 9X5 cm.
I did not cable the battery check circuit cause i plan to add a voltmeter in the casing.
Layout files will come soon.

[ripsdevala]

Hi,
I've made a SMD version of XL 200. The board is 9X5 cm.
I did not cable the battery check circuit cause i plan to add a voltmeter in the casing.
Layout files will come soon.
[ATTACH]37547[/ATTACH]
[ATTACH]37548[/ATTACH]

Nice repto, how are you, its been a while.
Do you manage to get more than 17cm deep?

[reptooyep]

Hi,
For the through hole version, i'm still waiting for MPSA13 transistor comming from china.
For the SMD version, i'm also waiting for transistors.
I just finnished my power module with a single 3.7 battery and a wireless charging module.
For your poor detection depth, maybe you can try increasing the damping resistor. What kind of coil do you use ?

[ripsdevala]

Hi,
For the through hole version, i'm still waiting for MPSA13 transistor comming from china.
For the SMD version, i'm also waiting for transistors.
I just finnished my power module with a single 3.7 battery and a wireless charging module.
For your poor detection depth, maybe you can try increasing the damping resistor. What kind of coil do you use ?

Standart 0.4mm enamel wire 250uh without shielding

[reptooyep]

By making a bigger coil, you will for sure increase the detection depth but you will loose sensibiliy to small objects.
I also want to try something : Increasing the pulse width and readjust the timing circuitry to provide more transmit power into objects (But more consuption)