Topic: What to do with all the old s-9s. - page 4. (Read 2573 times)

I can picture that. That could be better than my thought to further mod this is to use these

https://www.lowes.com/pd/Nelson-Wood-Shims-Actual-0-25-in-x-1-25-in-x-7-75-in-12-Pack-Fir-Wood-Shims/50051789

and this

https://www.lowes.com/pd/Frost-King-0-125-in-Foam-Plumbing-Pipe-Wrap-Insulation/1081449

glue 3 shims on each side of case and then line with foam wrap.

cost for a one heaters is about 20 for fan and spacer mod and below will do 4 for under 20

so 5 for 1.    so 5+20 = 25 bucks

15 minutes work

say 330 watts 3300 hash 40-45 db maybe  under 40db with the wedge and foam mods



__________>>>>>>>hashboard >>______________________________

I am going to fully flesh out the s-9 build  adding the shim and foam mods.

Maybe show it for monday the 8th of July.

I think I can build one for 25 dollars for sure under 30 dollars.

maybe get it to do 35-38db

and 3300gh at 315 watts

I have  20+ s-9's that will get pulled  so it is a viable idea.

This could possibly work with a Whatsminer m10 but that project would be off in the distance.

Maybe in dec 2020.

It'd take some custom enclosure but cooling would probably be more efficient if you had two fans side by side blowing directly into the heatsinks from the side of the board instead of from the end.

I wonder how well it'd work to use pull fans right against the heatsinks. Might work better for being able to aim your heat. 300W isn't too hard to clear either, considering my R606 can clear over 100W with a single 80mm 12v/160mA fan.

With some cleverness it might be possible to do away with the stock controller also, for just a single board. Hacking the voltage would require a bit of doing but a dummy USB2 adapter using the same connections as my Newpac/R606 broken out to the 18-pin cable and VH's cgminer driver, with a sufficiently strong controller, should be able to get ~2.7TH out of a single connection.

In any case, S9 quiet space heater is a great idea.

spacer

The key to doing this is simple.
1) dec 2018 bitmain firmware set to LPM
2) 1 hash board in the center.
3) proper fans -----
The Delta fans I used were purchased from China source at about 9 dollars each
https://www.ebay.com/itm/for-Delta-AFB1212SH-12cm-Ball-Bearing-12V-0-8A-4pin-PWM-cooling-Fan/182961677356?  cost was about 32 dollars for 4 fans

4) proper spacers. ----- got these on amazon

https://www.amazon.com/gp/product/B0103MXYA2/

cost was 4 per spacer you only need 1 spacer for the push intake fan

You are building a space heater that mines.
Not a miner that space heats

net cost is 8+8+4 = 20 bucks to make a 1 board 3.3th 335 watt heater.

This assumes you have a psu and a miner.
I have lots of s-9's and will be retiring them from Clifton farm this fall but they can do space heating for me in my house and buysolar's house



hard to read but it is 335



lastly the psu is a 1000 watt gold I think I could drop to 310 watts if I used a titanium



You may need run on Low Power Enhanced Mode as it may not cool at Low power mode

On my test model I do 4700gh and 480 watts and temps go too high 105 since the fans max at 2800 rpm.

So I simply do  Low Power Enhanced Mode get 3300gh at 335 with temps at 88 since fans max at 2800 rpm.

No real need to sound proof since sound is in the 41-45db range which is fairly quiet.

Since I have 20+ s-9s my guess is I will build quite a few of these units.

That fan I use pushes 115 cfm but it is quiet at 2800 rpm.

There is another model delta that pushes 150 cfm but goes up to 3600 rpm it may be too loud for a space heater.

I have started a new project for this winter.
S-9 space heaters.

Design is dead simple.  1 s-9 board in the center slot.

december 2018 firmware LPM mode

and a few subtle tricks to keep them quiet enough to space heat

gui below shows around 3.3th with moderate fan speeds



Checked both boxes for speed setting



used dec 2018 firmware