Post
Topic
Board Hardware
Re: GekkoScience 2Pac BM1384 Stickminer Official Support Thread
by
VectorSigma
on 11/08/2018, 05:19:07 UTC
My Gekko is not allowing 5V to come through its connector. 
 
  • Using a multi meter I've learned how to dial in the VCore voltage.
     
  • Using a USB meter, I've learned regardless if I’m using my powered hub, direct connection USB 3.0 ports or direct connection USB 2.0 ports, the Gekko is only flowing 4.6 - 4.85V instead of 5V.
     
  • The under volting is causing it to draw more amps to do the same work.
     
  • Regardless if I set the vcore to 1.4 or 1.46, when I set the frequency to 250, the amp draw hits 2.5A, and either the USB system or the computer shuts it down.
     

All the tables in the PDF guide calculate to a consistent 5V.  So unless there is a way for the Gekko to pull 5V, there’s no way to clock the frequency above 225, nor turn up the vcore voltages to hit higher frequencies.  And, at lower frequencies, it’s running hotter because it has to work harder to pull the load it needs. 

Do you have any suggestions to adjust the Gekko so it will flow a proper 5V?  I’ve checked this against my USB other devices.  The USB meter is spot-on.