Quote from: happydaze on April 27, 2014, 03:12:28 AM

ZiG's rmod is adding a resistor in series and can be done at least 2 ways.

1. Cut the bridge at R46 and add a resistor between those two points. To undue just re-bridge R46. Removing the resistor is optional as it would be bypassed by the bridge.

OR

2. Cut the bridge at R46 and add a resistor between the outer point of R46 and CON3 pin 3 (DGND). To undue remove the resistor.

method 2 is a bit easier because you have lots of room to work at both points
method 1 is easier to undue

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I think that ZiG's discovery has additional uses. (I'll try to confirm tomorrow)
VMOD1 = 36k + ZiG's idea but using a 13k resistor (for example) would give you 49k. (not tested yet)
VMOD3 = 47K + ZiG's idea but using a 2k resistor (for example) would give you 49k. (not tested yet)
It looks useful for anyone who has done other mods but now want to try a higher resistor value. It's possible you won't have to undue the other mod if this works.

nemercry or ZiG would know if the second part of what I posted is correct or not.
For now, stick to the first part of my post (above the dotted line) as being ZiG's rmod.

(edit - I see ZiG posted as I was typing)

Hey Happydaze,

For the #2...After you remove the resistor...You still have to short R46...
I guess...you are targeting "SHORTING" the Rmod...Axial or SMD...Removal is OPTIONAL...very well said...

SECOND Part...I was thinking of some variety of speeds, that this mod is making possible...including adding some external components, like DIP switch(es) etc...to be able to select from several possible Voltages/speeds...including through Software ("voltage=0" or "1" )...

Unfortunately Gridseed left UNUSED VID1 pin of the Buck Convertor...

BUT...if we combine MOD 1 ...bridge to shift Voltage reference to 36K...with Rmod = 14K AND Software option "voltage=1" we can do 50K Vref...as a "Extreme - 1200/1250MHz"....
AND Software switching with "voltage=0" will shift Voltage reference back to 33K resistor... + 14K = 47K Total...this will be more balanced Overclock "Turbo " ... Grin

...like 1125-1150-1175Mhz...which IMHO is the long term sweet spot for running 24/7...

Having played with full range of all Voltages and Speeds I know it is DOABLE...have to test and see...

Thanks for your time to experiment with these ideas...

ZiG