Hey all, I'll get straight to it. I've got MPP issues.
I followed the guide, and everything was working as intended, testing each stage as per the guide, unit's completed but all I get a slow "click click click click click" from the thing, when i put a pair of pliers on the coil...
5 results in 0.0038 seconds.
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Rev-E build (issue) step 5
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EMI Noise Reduction Design Ideas for PI Detectors
Along my journey to create the best PI machine using regular electronic components (i.e. no ADC's or microprocessors etc.), I have reached a point where my limiting factor to better sensitivity (SNR) is the need to eliminate/reduce EMI that is picked up by the search coil.
Does anyone have... -
PI coil cable - triboelectric noise - problems - solutions?
I believe I have ran into a problem with triboelectric noise when testing my PI Pinpointer.
I have not found anything about triboelectric noise in cables on this forum. Odd.
Still in my ears: "make sure the cable to the coil doesnt move" - it will cause falsing.... -
Exchange field noise voltage at various locations
Hi, I'm new to prospecting & metal detecting, but I've designed a metal detector & built a few versions. I'm interested in exchanging field noise voltage density per m^2 (nV/√Hz/m^2) measurements at various locations? I don't have much so far, just a few locations out here in the noisy... -
Not so DC waveform of minus 5 volt rail at the ne5534 - could this be cause of noise problems
I have a very jumpy threshold and am trying to hunt down where all the noise is coming from.
I found this rather odd waveform on Pin 4 of the ne5534. It should be -5 volts DC.
This funny signal only gets to the bypass caps (47uF+100nF) and 27Ohm resistor.
The -5v DC on the other...