I've just done something like that with my access point router. Its 5GHz transmitter heats the AP so much it's impossible to pick up or touch without burning your hands.

I still had a 240mm casefan lying around, so I bought another fan splitter with molex connector, a 230V-12V transformer with molex connector and a plastic container. Drilled holes in the container, put the fan and transformer under it, the AP on top. Fan's been blowing at 5V at the underside of the AP since Saturday, the AP is now cool to the touch. 😃

---

Greetings,

My Pis are some resilient little computers! I have noticed that when we have a power outage or brown out, they will start back up automatically when power resumes. My towers are on a UPS and my laptop, well it has a battery to back up a power outage. I have not had a single problem with my Pis since Pi #1 quit working with the SSD several months ago. :)

Have a great day! :)

Siran

---

CAPT Siran d'Vel'nahr - L L & P _\\//
Winders 11 OS? "What a piece of junk!" - L. Skywalker
"Logic is the cement of our civilization with which we ascend from chaos using reason as our guide." - T'Plana-hath

My Pis are some resilient little computers! I have noticed that when we have a power outage or brown out, they will start back up automatically when power resumes.

As will any desktop PC, depending on what you have selected in the BIOS.

---

Grant
Darwin NT

My Pis are some resilient little computers! I have noticed that when we have a power outage or brown out, they will start back up automatically when power resumes.

As will any desktop PC, depending on what you have selected in the BIOS.

Hi Grant,

I have my 2 PCs set so that I physically have to start BOINC after they boot up. It wouldn't do me any good to have them auto-start after a power outage. Besides, they're both on a UPS. Thanks for letting me know though. I never realized that. :)

Have a great day! :)

Siran

---

CAPT Siran d'Vel'nahr - L L & P _\\//
Winders 11 OS? "What a piece of junk!" - L. Skywalker
"Logic is the cement of our civilization with which we ascend from chaos using reason as our guide." - T'Plana-hath

Is there a Raspberry Pi-like SOC with a standard pcie slot (and/or addon kit)?

If I get started on this experiment I really want to be able to drop a gtx 750ti or gtx 1060 3GB in there.

Tom

Hack it yourself :o)

http://mloduchowski.com/en/blog/raspberry-pi-4-b-pci-express/

---

Is there a Raspberry Pi-like SOC with a standard pcie slot (and/or addon kit)?

If I get started on this experiment I really want to be able to drop a gtx 750ti or gtx 1060 3GB in there.

Tom

Hack it yourself :o)

http://mloduchowski.com/en/blog/raspberry-pi-4-b-pci-express/

My brother an EE with a lot of IC board soldering experience could probably manage. I am not as good at doing that. The discussion/pix's were fascinating. Thank you for pointing me to it.

Tom

---

A proud member of the OFA (Old Farts Association).

Has anybody set up a pi cluster to crunch some SETI@home data yet? I'm thinking about doing it but wanted to know if there was a proof of concept out there.

I would say there are at least half a dozen participants in this thread with 4 or more Pi's in a cluster.

---

Seti@Home classic workunits:20,676 CPU time:74,226 hours

A proud member of the OFA (Old Farts Association)

Has anybody set up a pi cluster to crunch some SETI@home data yet? I'm thinking about doing it but wanted to know if there was a proof of concept out there.

Hi Ausjorg,

As Keith stated, there are several users here running SETI on Pis. Here's my stack of Pis:

The switch is swapped out for an 8 port and the USB hub is no longer used (not that it ever was). They are resilient little computers. They have no problem with power outages or brownouts. They just boot right back up and continue crunching. I don't have to babysit them. ;) The fans are different, I now have Noctua fans cooling them.

Have a great day! :)

Siran

---

CAPT Siran d'Vel'nahr - L L & P _\\//
Winders 11 OS? "What a piece of junk!" - L. Skywalker
"Logic is the cement of our civilization with which we ascend from chaos using reason as our guide." - T'Plana-hath

Hello. I was running seti on an old phone when the battery swelled up. I removed the battery, tried starting it up without a battery, but plugged in by usb. Did not work. Found some YouTube videos that show how to by pass the battery terminals. Seems a bit sketchy for me (fire hazard?)

I had a few other boinc projects on the go using this phone, that used the other built in instrumentation. GPS, accelerometer, compass, etc. Does anyone know of a SBC that is relatively cheap, but also has this stuff built in. Trying to avoid a raspberry Pi with a HAT, but may go that route.

Thank you.

Hello. I was running seti on an old phone when the battery swelled up. I removed the battery, tried starting it up without a battery, but plugged in by usb. Did not work. Found some YouTube videos that show how to by pass the battery terminals. Seems a bit sketchy for me (fire hazard?)

I had a few other boinc projects on the go using this phone, that used the other built in instrumentation. GPS, accelerometer, compass, etc. Does anyone know of a SBC that is relatively cheap, but also has this stuff built in. Trying to avoid a raspberry Pi with a HAT, but may go that route.

Thank you.

I haven't had my Android phone battery swell up but I have read of others reporting it. I will admit that I bought a broken/sorta usable Samsung and put a new battery in it. So it might be a battery age issue.

Tom

---

A proud member of the OFA (Old Farts Association).

I haven't had my Android phone battery swell up but I have read of others reporting it. I will admit that I bought a broken/sorta usable Samsung and put a new battery in it. So it might be a battery age issue.

All my batteries end up swelling and popping the back of the phone case off. I found the swelling was aggravated and brought on much sooner if I used the wireless charging on the phone. If I use the proper wired micro-USB cable to keep the phone charged, the inevitable swelling is held off by probably twice as long.

On another note, I just get a 30 or 40mm fan and plug it into the GPIO headers for power. A lot cheaper than the official HAT device for my RPi3 B+ and Nvidia Nano.

---

Seti@Home classic workunits:20,676 CPU time:74,226 hours

A proud member of the OFA (Old Farts Association)

I haven't had my Android phone battery swell up but I have read of others reporting it. I will admit that I bought a broken/sorta usable Samsung and put a new battery in it. So it might be a battery age issue.

All my batteries end up swelling and popping the back of the phone case off. I found the swelling was aggravated and brought on much sooner if I used the wireless charging on the phone. If I use the proper wired micro-USB cable to keep the phone charged, the inevitable swelling is held off by probably twice as long.

On another note, I just get a 30 or 40mm fan and plug it into the GPIO headers for power. A lot cheaper than the official HAT device for my RPi3 B+ and Nvidia Nano.

Ah, I suspect the real issue is the charger. No battery can take being charged all the time. Most have sensors to disconnect from the charger when full. But if you are running the phone hard with 24/7 CPU use it may not sense the battery is full and keep full charge power flowing. That will kill the battery. Heat is the other enemy.

I haven't had my Android phone battery swell up but I have read of others reporting it. I will admit that I bought a broken/sorta usable Samsung and put a new battery in it. So it might be a battery age issue.

All my batteries end up swelling and popping the back of the phone case off. I found the swelling was aggravated and brought on much sooner if I used the wireless charging on the phone. If I use the proper wired micro-USB cable to keep the phone charged, the inevitable swelling is held off by probably twice as long.

On another note, I just get a 30 or 40mm fan and plug it into the GPIO headers for power. A lot cheaper than the official HAT device for my RPi3 B+ and Nvidia Nano.

Ah, I suspect the real issue is the charger. No battery can take being charged all the time. Most have sensors to disconnect from the charger when full. But if you are running the phone hard with 24/7 CPU use it may not sense the battery is full and keep full charge power flowing. That will kill the battery. Heat is the other enemy.

Well the charger is the phone. The micro-USB cable and wall wart is just a dumb device supplying +5V. There are no controls in the power supply. The phone normally sits on a kitchen counter top along with the Kindle Fires that run Seti full time. The 4 core Kindle gets rather warm, but the rest of the Android devices including the phone are only barely warm. Just a little above ambient. Never had a single issue with the batteries in the Kindles.

---

Seti@Home classic workunits:20,676 CPU time:74,226 hours

A proud member of the OFA (Old Farts Association)

Has anybody set up a pi cluster to crunch some SETI@home data yet? I'm thinking about doing it but wanted to know if there was a proof of concept out there.

Hi Ausjorg,

As Keith stated, there are several users here running SETI on Pis. Here's my stack of Pis:

The switch is swapped out for an 8 port and the USB hub is no longer used (not that it ever was). They are resilient little computers. They have no problem with power outages or brownouts. They just boot right back up and continue crunching. I don't have to babysit them. ;) The fans are different, I now have Noctua fans cooling them.

Have a great day! :)

Siran

Thank you for the info. Is there more of a benefit running BOINC on the cluster than running it on each individual device?

Has anybody set up a pi cluster to crunch some SETI@home data yet? I'm thinking about doing it but wanted to know if there was a proof of concept out there.

Hi Ausjorg,

As Keith stated, there are several users here running SETI on Pis. Here's my stack of Pis:
[img] -[snipped]- [/img]
The switch is swapped out for an 8 port and the USB hub is no longer used (not that it ever was). They are resilient little computers. They have no problem with power outages or brownouts. They just boot right back up and continue crunching. I don't have to babysit them. ;) The fans are different, I now have Noctua fans cooling them.

Have a great day! :)

Siran

Thank you for the info. Is there more of a benefit running BOINC on the cluster than running it on each individual device?

Hi Ausjorg,

My Pis are not a cluster such as modern CPUs with multiple cores. Each Pi is doing its own thing, own OS, own BOINC installation, etc. I wouldn't know how to run them as a cluster, if it's even possible. Sorry.

Have a great day! :)

Siran

---

CAPT Siran d'Vel'nahr - L L & P _\\//
Winders 11 OS? "What a piece of junk!" - L. Skywalker
"Logic is the cement of our civilization with which we ascend from chaos using reason as our guide." - T'Plana-hath

Has anybody set up a pi cluster to crunch some SETI@home data yet? I'm thinking about doing it but wanted to know if there was a proof of concept out there.

Hi Ausjorg,

As Keith stated, there are several users here running SETI on Pis. Here's my stack of Pis:
[img] -[snipped]- [/img]
The switch is swapped out for an 8 port and the USB hub is no longer used (not that it ever was). They are resilient little computers. They have no problem with power outages or brownouts. They just boot right back up and continue crunching. I don't have to babysit them. ;) The fans are different, I now have Noctua fans cooling them.

Have a great day! :)

Siran

Thank you for the info. Is there more of a benefit running BOINC on the cluster than running it on each individual device?

Hi Ausjorg,

My Pis are not a cluster such as modern CPUs with multiple cores. Each Pi is doing its own thing, own OS, own BOINC installation, etc. I wouldn't know how to run them as a cluster, if it's even possible. Sorry.

Have a great day! :)

Siran

That is good to know. Thank you for the information.

I thought I'd add another data point here.

I'm running a Raspberry Pi 4 with Raspbian (Buster,) BOINC 7.14.2, and SETI@Home .

So far, it's been rock-solid, even using a WiFi connection.. The only issue is that the Pi4 runs HOT, you have to have forced-air cooling, preferably with heat sinks. Without it, running bare on my desktop, the CPU hit 85C in under two minutes (thremal throttling kicks in somewhere around 83C, it appears. (In the official Pi4 case, even at idle, the thing will eventually overheat.

Other than that, it's been running fine. I'm tempted to buy a few more to make a cluster to run SETI@Hime, but frankly, it'd be cheaper to buy a 1660ti GPU and throw it into one of my other computers and boost that computer's SETI processing.

-- RK

---

https://www.boincstats.com/signature/-1/user/23070/sig.png

On my Pi4 I've gone for crude but effective air blast cooling. My two Pis are stacked using PCB spacers (6 or 8mm, I can't recall which I bought), two at each corner between the boards and one above and below to give an air gap below. Over the top of the upper stand-offs there's a "roof" of aluminium tape and the bottom set of stand-offs form legs - they just sit on the desktop. At the SD card end there's a small 5v fan (diameter is about the same as the width of the Pi board) blasting through the gaps and exhausting where ever it likes (most is coming out of the sides).
As others have said the Pi4 runs "screaming hot", but with this simple setup its temperature is reduced to "I can hold my finger on there quite comfortably" (it was " ^&*(%^&* " that's far too hot).
Next time I'm at the boat I'll get a couple of pictures (pretty it ain't).

---

Bob Smith
Member of Seti PIPPS (Pluto is a Planet Protest Society)
Somewhere in the (un)known Universe?

I bought a case with a built in fan for my RPi 2 Model B . With all four cores crunching SETI all the time the temperature is 50C. I am sure they make something similar for the Pi4. It came with 3 heatsinks and was $11 at that giant retailer named after a river.