6
. V
oltage and
Frequency
Adjustment
s
(overclocking)
Even with a fan built in, you can still overheat your Moonlander at higher
frequencies. I do not recommend running these past 800mhz unless you can
closely monitor temps (if you have a IR temp gun check the top ASIC heatsink,
it should not be any hotter than 80C).
Below is a visual of the board for reference:
There are two pots that control the two main voltages feeding the ASIC. Top
pot controls the memory voltage (when looking at the board with USB port fac-
ing left), and bottom controls core voltage. You adjust the voltage by turning
the Pot clockwise or counterclockwise with a fine flat head or philips screw-
driver. The pots are VERY sensitive, the whole voltage range is within HALF a
turn in either direction from the stock position. You must do micro adjustments
if you want to do very fine tuning. For example going from .75 - .8 v might take
as little as a little torque pressure on the screwdriver even if you don’t feel it
actually twist.
Make sure you have place the stick horizontal and the USB end is facing LEFT
(ie you can read FutureBit Moonlander normally on the board).
To turn the voltage UP turn the pot CLOCKWISE, to turn it DOWN, COUN-
TERCLOCKWISE.
DO NOT turn the pots more than 180 degrees in either direction, they have no
stops and if you go past their lowest or highest setting you could damage them
To check the voltage use a multimeter and contact the ground wire to either of
the two ground terminals (circled and labeled ground in the picture), and the
positive wire to the outputs of the two inductors (circled and labeled VCORE,
and VMEMORY). Be extra careful not to short anything as a single short any-
where on the board while its powered will most likely fry it. If you don’t have a
multimeter, you can wing voltages by following the diagrams below for Pot po-
sitions. Use the flat edge of the pot screw as the pointing direction (DO NOT
OVERVOLT at the high end if you don’t have a multimeter to double check
what the voltage is).
Last updated:
31
/
10
/201
8
Page 1
0
of
12
MOONLANDER 2
USB Stick Miner User Guide
