Just started to build MPP

[Qiaozhi]

OK. After removing some "jammers" (CFL bulb above table etc) it is closer to 100mV for 22us main sample delay. For 500mV i have ca 10us sample delay.
Which setting is better for now?

It all depends on your coil. Is it fast enough to allow you to use a 10us delay?

[egonw3]

We will see... I've restored 22us setting.

Meanwhile I've just finishd Step 8. At T9 I have voltages between -3,48V and +4,34V. Is it OK or the negative one is too low?

[egonw3]

Despite of low negative voltage at TP9 I've finished Step 9. At 12us main pulse delay it detects my golden wedding ring from 20cm. And this is my "temporary coil" - 200' of Litz 175/46 waits for me at the post office...

[egonw3]

MPP pcb from Silverdog is out of stock. Does anybody know when its available again?

I've just found something that may interest you: http://www.ebay.co.uk/itm/Geotech-Mi...item3cf0072945

Regards,

ZG