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World Community Grid Forums
Category: Support
Forum: Android Support Forum
Thread: How to Recycle Android Phones for BOINC or Folding Rig Without Using Batteries |
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Thread Status: Active Total posts in this thread: 69
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Nothing went wrong. The flashing was not needed at the end, since the stick comes with root by default so I do not care which root it was (maybe it was SuperSu) Lucky for you!  |
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cristipurdel
Senior Cruncher Joined: Dec 13, 2008 Post Count: 158 Status: Offline Project Badges: 
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Due to the batteries I started looking for this solution, which is more safe + efficient. Plus you could use a phone which has no battery or the screen is damaged :) Screen-damaged phone is sure to be more energy-efficient, but how on earth will you set up the BOINC application for its OOBE screen, if your screen is broken already? Not all phones support OTG-HID. I was not accurate, I was trying to say broken glass. Even if there is slight damage to screen, and touch is still working, you could still use smth like scrcpy to gain access relatively easy  Oh, that. It would be very easy if touch is still working. I've made a feature request for android2android remote on: https://gitlab.com/las2mile/scrcpy-android/issues/2 |
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cristipurdel
Senior Cruncher Joined: Dec 13, 2008 Post Count: 158 Status: Offline Project Badges:
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50y with Zika :P
----------------------------------------For the amlogic sticks I removed the over as per joneill003's advice, and raise the freq from .5 GHz to 1.0 Ghz and gained about 40Gflops in the process (for 10 sticks). So as a rule of thumb, 1GHz arm core = 1Gflops The temp is now around 70degC for the hottest stick while for the coldest is 60degC (room temp is 20degC). I received also the heat-sinks and will test next week how low could the temp decrease. ---------------------------------------- [Edit 1 times, last edit by cristipurdel at Jan 19, 2019 1:46:07 PM] |
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KLiK
Master Cruncher Croatia Joined: Nov 13, 2006 Post Count: 3108 Status: Offline Project Badges: 
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50y with Zika :P For the amlogic sticks I removed the over as per joneill003's advice, and raise the freq from .5 GHz to 1.0 Ghz and gained about 40Gflops in the process (for 10 sticks). So as a rule of thumb, 1GHz arm core = 1Gflops The temp is now around 70degC for the hottest stick while for the coldest is 60degC (room temp is 20degC). I received also the heat-sinks and will test next week how low could the temp decrease. Where did you find out Tjunc for ARM processors? |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
50y with Zika :P For the amlogic sticks I removed the over as per joneill003's advice, and raise the freq from .5 GHz to 1.0 Ghz and gained about 40Gflops in the process (for 10 sticks). So as a rule of thumb, 1GHz arm core = 1Gflops The temp is now around 70degC for the hottest stick while for the coldest is 60degC (room temp is 20degC). I received also the heat-sinks and will test next week how low could the temp decrease. So the temps dropped just with the covers off? That's good to hear. The heatsinks should help quite a bit more. |
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cristipurdel
Senior Cruncher Joined: Dec 13, 2008 Post Count: 158 Status: Offline Project Badges:
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50y with Zika :P For the amlogic sticks I removed the over as per joneill003's advice, and raise the freq from .5 GHz to 1.0 Ghz and gained about 40Gflops in the process (for 10 sticks). So as a rule of thumb, 1GHz arm core = 1Gflops The temp is now around 70degC for the hottest stick while for the coldest is 60degC (room temp is 20degC). I received also the heat-sinks and will test next week how low could the temp decrease. Where did you find out Tjunc for ARM processors? CPU-Z if you are referring to temp. |
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cristipurdel
Senior Cruncher Joined: Dec 13, 2008 Post Count: 158 Status: Offline Project Badges:
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50y with Zika :P For the amlogic sticks I removed the over as per joneill003's advice, and raise the freq from .5 GHz to 1.0 Ghz and gained about 40Gflops in the process (for 10 sticks). So as a rule of thumb, 1GHz arm core = 1Gflops The temp is now around 70degC for the hottest stick while for the coldest is 60degC (room temp is 20degC). I received also the heat-sinks and will test next week how low could the temp decrease. So the temps dropped just with the covers off? That's good to hear. The heatsinks should help quite a bit more. I guess they dropped by 5 deg with cover off, and 5 more with two 20x20x14mm heatsinks. Now the hottest is at 66degC at 1GHz, cannot compare exactly, since during summer it was throttling even at .5GHz But I would say it dropped by 10degC, could go even lower with a usb fan. Overall, the passive rig(10 sticks + 10 phones) seams pretty toasty at 70degC, in one cubic feet of space :) |
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KLiK
Master Cruncher Croatia Joined: Nov 13, 2006 Post Count: 3108 Status: Offline Project Badges:
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50y with Zika :P For the amlogic sticks I removed the over as per joneill003's advice, and raise the freq from .5 GHz to 1.0 Ghz and gained about 40Gflops in the process (for 10 sticks). So as a rule of thumb, 1GHz arm core = 1Gflops The temp is now around 70degC for the hottest stick while for the coldest is 60degC (room temp is 20degC). I received also the heat-sinks and will test next week how low could the temp decrease. Where did you find out Tjunc for ARM processors? CPU-Z if you are referring to temp. That is for getting your temp. on CPU. But what is the designed Tjunc for Arm Cortex-A5? |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
That is for getting your temp. on CPU. But what is the designed Tjunc for Arm Cortex-A5? Not sure what the Tjunc is for ARM processors. I have never been able to find any specific numbers. But they tend to throttle themselves around 80C so I would guess around 90C. Maybe someone could reach out to the chip manufacturer. They should have more detailed spec sheets available. |
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KLiK
Master Cruncher Croatia Joined: Nov 13, 2006 Post Count: 3108 Status: Offline Project Badges:
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That is for getting your temp. on CPU. But what is the designed Tjunc for Arm Cortex-A5? Not sure what the Tjunc is for ARM processors. I have never been able to find any specific numbers. But they tend to throttle themselves around 80C so I would guess around 90C. Maybe someone could reach out to the chip manufacturer. They should have more detailed spec sheets available. I'm pushing mine in MXQ to 60°C with BOINC. Is that enough? & can't get data like it's visible for: - intel, example: https://ark.intel.com/products/97935/Intel-At...-4M-Cache-up-to-2-10-GHz- - AMD, example in Specifications: https://www.amd.com/en/products/cpu/amd-ryzen-7-1700  |
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