| Index | Recent Threads | Unanswered Threads | Who's Active | Guidelines | Search |
 |
World Community Grid Forums
Category: Support
Forum: Android Support Forum
Thread: How to Recycle Android Phones for BOINC or Folding Rig Without Using Batteries |
| No member browsing this thread |
|
Thread Status: Active Total posts in this thread: 69
|
|
| Author |
|
|
cristipurdel
Senior Cruncher Joined: Dec 13, 2008 Post Count: 158 Status: Offline Project Badges: 
|
Finally managed to solve:
-----------------------------------------remote notification when device is offline for more than 8 hours - high https://groups.google.com/forum/#!topic/automate-user/wZLr7GWFdd8 -check CPU temp and send an emai if CPU temp drops under a predefined value (I just check the device temp and substract 5-10 deg) I had this issue since some devices decided to go haywire https://groups.google.com/forum/#!topic/automate-user/Cozif6uW0hQ things still needed to figure out: -restart device when last cpu freq is lower than a certain value, needs root - low Can be covered by the CPU Temp check flow -amlogic thermal throttling universal method - low -auto restart after power-outage - low So ideally this setup (with 3 automate flows) should allow for smooth operation of 50 devices, by rotating the wi-fi connection every 2 minutes (not to use a secondary router). If things go bad (wi-fi connection or CPU temp) I just email myself so I can debug it. I can also bypass teamviewer host since it's not 100% reliable (sometimes it disconnects on its own) |
||
|
|
cristipurdel
Senior Cruncher Joined: Dec 13, 2008 Post Count: 158 Status: Offline Project Badges:
|
I made the housing only of legos (see my instructable cover photo), since ... the answer to life, universe and everything is 42
----------------------------------------I switched also one octo & one quad on full 5V to see if it's holding or not |
||
|
|
cristipurdel
Senior Cruncher Joined: Dec 13, 2008 Post Count: 158 Status: Offline Project Badges:
|
Added:
----------------------------------------6.13 Home made cables 6.99 Issues |
||
|
|
Coleslaw
Veteran Cruncher USA Joined: Mar 29, 2007 Post Count: 1343 Status: Offline Project Badges: 
|
Well... I finally got around to modding my Alcatel OneTouch phones that had bloated. Not as fancy as cristipurdel's setup, but it will work just fine.
----------------------------------------https://hardforum.com/threads/resurrected-android-devices.1962055/ Each of the phones paid for themselves running beermoney apps the last few years several times over, so there is absolutely no "loss" if they burn up.     |
||
|
|
sunk818
Advanced Cruncher Joined: May 10, 2018 Post Count: 66 Status: Offline Project Badges: 
|
Well... I finally got around to modding my Alcatel OneTouch phones that had bloated. Not as fancy as cristipurdel's setup, but it will work just fine. BOINC will monitor the battery temp (default is 40 C?) and stop BOINCing if it detects the battery is getting hot. How would modding it like this affect that? Does it matter? |
||
|
|
Coleslaw
Veteran Cruncher USA Joined: Mar 29, 2007 Post Count: 1343 Status: Offline Project Badges:
|
Modding it like this means no battery at all. So, you don't have to worry about battery temps. Rather, you would only want to make sure you keep the whole device cool as the more threads/cores you run the hotter the entire device gets. The Octocores may burn up quick if you don't have air flow on them. Quads can get hot but I haven't seen them get excessive yet.
----------------------------------------And just because BOINC monitors the temp of the battery doesn't mean it is necessarily safe at default levels. Now, taking the battery out of the device also means that BOINC cannot monitor the battery, so you would need to change the settings to allow for that. Without the battery, you get an option for Stationary device mode. This basically tells the client to not bother looking for a battery that isn't there. |
||
|
|
Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Keep an eye on the electrical tape. I put some tape on mine in that location, and because that is where the heat tends to build up, the tape felt soft. I put more tape on the upper part around the camera, but I also left the back cover off. You should be fine since the cover will help hold the usb cable in place though.
On the phones that I had to keep the battery in (i couldnt find a way to bypass the battery), I hot glued a plastic L bracket to put the battery at a 45* angle from the phone. The batteries stay nice and cool, even with all 4 cores crunching. Of course, they have good airflow. |
||
|
|
cristipurdel
Senior Cruncher Joined: Dec 13, 2008 Post Count: 158 Status: Offline Project Badges:
|
I managed to get a Deca core phone, Vernee Apollo lite, to run on all 10 cores, via an miui forum thread for a heliox20 soc. It gets at 60 deg C with frequency set at .75GHz which is 40% of full potential😁 but efficiency is lagging at around 85% which is not encouragingly. Now I'm trying to figure out how to bypass the internal battery with the Cable diode method.
-------------------------------------------------------------------------------- [Edit 1 times, last edit by cristipurdel at Jun 11, 2018 7:31:51 AM] |
||
|
|
Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
I managed to get a Deca core phone, Vernee Apollo lite, to run on all 10 cores, via an miui forum thread for a heliox20 soc. It gets at 60 deg C with frequency set at .75GHz which is 40% of full potential😁 but efficiency is lagging at around 85% which is not encouragingly. Now I'm trying to figure out how to bypass the internal battery with the Cable diode method. Is the battery removable or is it one that is not meant to be removed? Either way, if you cannot remove the battery and power direct from USB power, try doing as I did. Put the battery to a 90* angle and use some sort of bracket to hold it in place. On the two phones I did this with, there was enough play in the wiring connecting the battery to the phone to allow this. I just used a plastic L bracket and some hot glue. This should allow the CPU to breathe a little better, and will keep the battery from getting as hot. Mine, the batteries run cool to the touch with a small USB fan blowing on them. I went a step further on my motorola turbo, which has a quad core chip but runs very hot. I found the hottest part of the back panel, which I assume is the back of the CPU, and I used some thermal glue to glue on a couple of the small copper heatsinks. I wasn't sure if it would work, but the heatsinks actually pull a lot of heat, which is cooled by the USB fan. I am not sure how much this helps the CPU, but I hope it keeps it from thermal throttling as much. [Edit 1 times, last edit by Former Member at Jun 13, 2018 9:13:33 PM] |
||
|
|
cristipurdel
Senior Cruncher Joined: Dec 13, 2008 Post Count: 158 Status: Offline Project Badges:
|
Using my cable+diode I am charging directly the battery circuit (which I cut off the internal non-removable battery). I also removed all circuits from the daughter-board which apparently they are not critical :) by looking on the below tutorial
----------------------------------------https://www.youtube.com/watch?v=LDBwhNa1-6o&t=280s The only problem is that when I measure the Voltage after the battery circuit I am getting, sometimes, values of 2.5V and power gets cut-off. It could be that the diode 1N5400 series is cutting to much voltage,maybe around 0.7-1.0V and after the battery circuit (which I feel works also as a voltage regulator , e.g in the battery voltage range e.g. 3.7-4.35V) is further regulating down the voltage, it might not have enough voltage to power the phone. I would prefer not to put the heat-sinks since my goal is to cram as many phones as possible, without making them too bulky |
||
|
|
|