I went up on the mountain Wednesday morning. The repeater was powered up as well as the BBB. No action from the repeater. Any thoughts on low power way to keep the BBB and the URI warm ? I can use 12vdc Sent from an iPhone 5 iOS 8 Mike.Lussier@gmail.com AE4ML@arrl.net AE4ML@amsat.org
Hi, it all depend how much power you got.. are you on solar power or wind turbine? or on line power? there is a nice type of housing that you could use for your BBB and URI Outdoor camera housing can be bough on ebay for 20$. it will protect the BBB and URI from hot and cold temp and the even have place to run the wire in and out of the housing.. http://www.ebay.com/itm/Aluminum-outdoor-Housing-Bracket-with-Heater-Fan-for... something like that would do a good job.. this will make a ccd camera run all winter long outside.. And this will even prevent humidity to it the box
From: mike.lussier@gmail.com Date: Thu, 20 Nov 2014 17:22:21 -0500 To: app_rpt-users@ohnosec.org Subject: [App_rpt-users] Frozen repeater
I went up on the mountain Wednesday morning. The repeater was powered up as well as the BBB. No action from the repeater. Any thoughts on low power way to keep the BBB and the URI warm ? I can use 12vdc
Sent from an iPhone 5 iOS 8
Mike.Lussier@gmail.com AE4ML@arrl.net AE4ML@amsat.org
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Hi Mike, Was the URI green LED flashing (I guess not...)?? I'm rather amazed that the BBB or URI was directly the cause of the lock-up, even with really cold conditions. The simplest low-power-budget solution to keep this hardware warm is a simple Styrofoam container. Even with the minuscule BBB power consumption, Styrofoam should do the job fine. I'll mention here, again, that the ONLY scenarios I've seen where BBB's have locked-up were due to 5VDC power woes. I completely stable 5V power source is critical. And, the 5VDC regulator might be a source of problems in extreme cold, too. If you don't already have it, I recommend adding a cheap digital thermometer to your cabinet that records all-time temperature extremes, including time/date. Or, if you want to get fancier, the BBB AllStar release already includes support for a USB attached thermometer (see the "pcsensor" command) which will log temperature to a file, etc. Note that if you decide to go the USB thermometer route, a bug was found in the code in the 1.2.1 release. This has already been patched, but, you'll need the patch (contact me off list or search the arm-allstar list for more details). Any idea how cold it got and for how long??? And, what is your power source?? I'm preparing to put a "test" BBB and URI in my deep-freezer (about -15 degrees Fahrenheit) for this weekend. I'll put it in there completely unprotected. My problems in the past with such extreme cold have been issues directly with the radio hardware (like VCO's that unlock, etc.). This type of extreme thermal shock can also destroy transmitter PA's, in short order by cracking ceramic substrates in power modules, etc. (I've got a few of those Tee-shirts, too!). 73, David KB4FXC On Thu, 20 Nov 2014, Michael Lussier wrote:
I went up on the mountain Wednesday morning. The repeater was powered up as well as the BBB. No action from the repeater. Any thoughts on low power way to keep the BBB and the URI warm ? I can use 12vdc
Sent from an iPhone 5 iOS 8
Mike.Lussier@gmail.com AE4ML@arrl.net AE4ML@amsat.org
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Hi Mike (& Everyone), I ran an "experimental" freezer test over the last 10 hours or so. My test setup is a "bare" BBB (no case or anything) with URI plugged in, sitting in a ceramic dinner plate on the 2nd shelf from the top of the deep-freezer. I'm powering the contraption using an Adafruit 5V2A wall-wart located outside the freezer, with the small power cord running thru the freeze door seal. An uncalibrated analog thermometer inside said about -20 degrees Fahrenheit just now. The typical range on this thermometer is about -15 or lower. I brought an industrial "point and shoot" IR thermometer back from my office and checked the BBB at various spots. The CPU/SoC was the warmest at about -2 degrees. Other spots ranged as low as -9. When I pointed the IR thermometer at my old analog one, the IR said -17 (analog says -20). The plate, BBB and thermometer are in the air stream from the freezer circulating fan--that should be a worst case scenario! I'm already getting some dirty looks about "commandeering" the freezer! I'll going to conclude this phase of testing before lunch! HiHi! 73, David KB4FXC On Fri, 21 Nov 2014, David McGough wrote:
Hi Mike,
Was the URI green LED flashing (I guess not...)??
I'm rather amazed that the BBB or URI was directly the cause of the lock-up, even with really cold conditions. The simplest low-power-budget solution to keep this hardware warm is a simple Styrofoam container. Even with the minuscule BBB power consumption, Styrofoam should do the job fine.
I'll mention here, again, that the ONLY scenarios I've seen where BBB's have locked-up were due to 5VDC power woes. I completely stable 5V power source is critical. And, the 5VDC regulator might be a source of problems in extreme cold, too.
If you don't already have it, I recommend adding a cheap digital thermometer to your cabinet that records all-time temperature extremes, including time/date. Or, if you want to get fancier, the BBB AllStar release already includes support for a USB attached thermometer (see the "pcsensor" command) which will log temperature to a file, etc. Note that if you decide to go the USB thermometer route, a bug was found in the code in the 1.2.1 release. This has already been patched, but, you'll need the patch (contact me off list or search the arm-allstar list for more details).
Any idea how cold it got and for how long??? And, what is your power source??
I'm preparing to put a "test" BBB and URI in my deep-freezer (about -15 degrees Fahrenheit) for this weekend. I'll put it in there completely unprotected.
My problems in the past with such extreme cold have been issues directly with the radio hardware (like VCO's that unlock, etc.). This type of extreme thermal shock can also destroy transmitter PA's, in short order by cracking ceramic substrates in power modules, etc. (I've got a few of those Tee-shirts, too!).
73, David KB4FXC
On Thu, 20 Nov 2014, Michael Lussier wrote:
I went up on the mountain Wednesday morning. The repeater was powered up as well as the BBB. No action from the repeater. Any thoughts on low power way to keep the BBB and the URI warm ? I can use 12vdc
Sent from an iPhone 5 iOS 8
Mike.Lussier@gmail.com AE4ML@arrl.net AE4ML@amsat.org
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Science at its finest! -- Thanks in Advance Bob Brown, WØNQX Kansas City Metro Area http://drsm0ke.net http://byrg.net http://sm0kenet.net http://kcdstar.byrg.net Quis custodiet ipsos custodes? -- On Fri, Nov 21, 2014 at 11:00 AM, David McGough <kb4fxc@inttek.net> wrote:
Hi Mike (& Everyone),
I ran an "experimental" freezer test over the last 10 hours or so. My test setup is a "bare" BBB (no case or anything) with URI plugged in, sitting in a ceramic dinner plate on the 2nd shelf from the top of the deep-freezer. I'm powering the contraption using an Adafruit 5V2A wall-wart located outside the freezer, with the small power cord running thru the freeze door seal.
An uncalibrated analog thermometer inside said about -20 degrees Fahrenheit just now. The typical range on this thermometer is about -15 or lower.
I brought an industrial "point and shoot" IR thermometer back from my office and checked the BBB at various spots. The CPU/SoC was the warmest at about -2 degrees. Other spots ranged as low as -9. When I pointed the IR thermometer at my old analog one, the IR said -17 (analog says -20). The plate, BBB and thermometer are in the air stream from the freezer circulating fan--that should be a worst case scenario!
I'm already getting some dirty looks about "commandeering" the freezer! I'll going to conclude this phase of testing before lunch! HiHi!
73, David KB4FXC
On Fri, 21 Nov 2014, David McGough wrote:
Hi Mike,
Was the URI green LED flashing (I guess not...)??
I'm rather amazed that the BBB or URI was directly the cause of the lock-up, even with really cold conditions. The simplest low-power-budget solution to keep this hardware warm is a simple Styrofoam container. Even with the minuscule BBB power consumption, Styrofoam should do the job fine.
I'll mention here, again, that the ONLY scenarios I've seen where BBB's have locked-up were due to 5VDC power woes. I completely stable 5V power source is critical. And, the 5VDC regulator might be a source of problems in extreme cold, too.
If you don't already have it, I recommend adding a cheap digital thermometer to your cabinet that records all-time temperature extremes, including time/date. Or, if you want to get fancier, the BBB AllStar release already includes support for a USB attached thermometer (see the "pcsensor" command) which will log temperature to a file, etc. Note that if you decide to go the USB thermometer route, a bug was found in the
code
in the 1.2.1 release. This has already been patched, but, you'll need the patch (contact me off list or search the arm-allstar list for more details).
Any idea how cold it got and for how long??? And, what is your power source??
I'm preparing to put a "test" BBB and URI in my deep-freezer (about -15 degrees Fahrenheit) for this weekend. I'll put it in there completely unprotected.
My problems in the past with such extreme cold have been issues directly with the radio hardware (like VCO's that unlock, etc.). This type of extreme thermal shock can also destroy transmitter PA's, in short order by cracking ceramic substrates in power modules, etc. (I've got a few of those Tee-shirts, too!).
73, David KB4FXC
On Thu, 20 Nov 2014, Michael Lussier wrote:
I went up on the mountain Wednesday morning. The repeater was powered
up as well as the BBB. No action from the repeater.
Any thoughts on low power way to keep the BBB and the URI warm ? I can use 12vdc
Sent from an iPhone 5 iOS 8
Mike.Lussier@gmail.com AE4ML@arrl.net AE4ML@amsat.org
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Nice ! Sent from an iPhone 5 iOS 8 Mike.Lussier@gmail.com AE4ML@arrl.net AE4ML@amsat.org
On Nov 21, 2014, at 12:00, David McGough <kb4fxc@inttek.net> wrote:
Hi Mike (& Everyone),
I ran an "experimental" freezer test over the last 10 hours or so. My test setup is a "bare" BBB (no case or anything) with URI plugged in, sitting in a ceramic dinner plate on the 2nd shelf from the top of the deep-freezer. I'm powering the contraption using an Adafruit 5V2A wall-wart located outside the freezer, with the small power cord running thru the freeze door seal.
An uncalibrated analog thermometer inside said about -20 degrees Fahrenheit just now. The typical range on this thermometer is about -15 or lower.
I brought an industrial "point and shoot" IR thermometer back from my office and checked the BBB at various spots. The CPU/SoC was the warmest at about -2 degrees. Other spots ranged as low as -9. When I pointed the IR thermometer at my old analog one, the IR said -17 (analog says -20). The plate, BBB and thermometer are in the air stream from the freezer circulating fan--that should be a worst case scenario!
I'm already getting some dirty looks about "commandeering" the freezer! I'll going to conclude this phase of testing before lunch! HiHi!
73, David KB4FXC
On Fri, 21 Nov 2014, David McGough wrote:
Hi Mike,
Was the URI green LED flashing (I guess not...)??
I'm rather amazed that the BBB or URI was directly the cause of the lock-up, even with really cold conditions. The simplest low-power-budget solution to keep this hardware warm is a simple Styrofoam container. Even with the minuscule BBB power consumption, Styrofoam should do the job fine.
I'll mention here, again, that the ONLY scenarios I've seen where BBB's have locked-up were due to 5VDC power woes. I completely stable 5V power source is critical. And, the 5VDC regulator might be a source of problems in extreme cold, too.
If you don't already have it, I recommend adding a cheap digital thermometer to your cabinet that records all-time temperature extremes, including time/date. Or, if you want to get fancier, the BBB AllStar release already includes support for a USB attached thermometer (see the "pcsensor" command) which will log temperature to a file, etc. Note that if you decide to go the USB thermometer route, a bug was found in the code in the 1.2.1 release. This has already been patched, but, you'll need the patch (contact me off list or search the arm-allstar list for more details).
Any idea how cold it got and for how long??? And, what is your power source??
I'm preparing to put a "test" BBB and URI in my deep-freezer (about -15 degrees Fahrenheit) for this weekend. I'll put it in there completely unprotected.
My problems in the past with such extreme cold have been issues directly with the radio hardware (like VCO's that unlock, etc.). This type of extreme thermal shock can also destroy transmitter PA's, in short order by cracking ceramic substrates in power modules, etc. (I've got a few of those Tee-shirts, too!).
73, David KB4FXC
On Thu, 20 Nov 2014, Michael Lussier wrote:
I went up on the mountain Wednesday morning. The repeater was powered up as well as the BBB. No action from the repeater. Any thoughts on low power way to keep the BBB and the URI warm ? I can use 12vdc
Sent from an iPhone 5 iOS 8
Mike.Lussier@gmail.com AE4ML@arrl.net AE4ML@amsat.org
_______________________________________________ App_rpt-users mailing list App_rpt-users@ohnosec.org http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users
To unsubscribe from this list please visit http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users and scroll down to the bottom of the page. Enter your email address and press the "Unsubscribe or edit options button" You do not need a password to unsubscribe, you can do it via email confirmation. If you have trouble unsubscribing, please send a message to the list detailing the problem.
BTW, one more thought. The 1.2.1 BBB release also includes some code to activate a Hardware Watchdog. This is not activated by default, but, might help. The watchdog resets the BBB, if a lockup is detected. To activate the watchdog, uncomment a line near the top of the /etc/rc.local file. There is a comment in the rc.local file, too. After un-commenting, a reboot will be required (or you can start the watchdog code from the command prompt, etc.). 73, David KB4FXC
This would apply to the 1.1 version but NOT the 1.2.1 version. The users method of activating and deactivating many events and services has changed in 1.2.1 To activate the watchdog simply edit /usr/local/etc/allstar.env and # defines the watchdog timer (enabled or disabled) # default="disabled" export WATCHDOG="disabled" Make the WATCHDOG parameter "enable" and reboot. Do not change anything in rc.local or rc.allstar 73 Doug WA3DSP http://www.crompton.com/hamradio
Date: Fri, 21 Nov 2014 13:01:20 -0500 From: kb4fxc@inttek.net To: mike.lussier@gmail.com CC: app_rpt-users@ohnosec.org Subject: Re: [App_rpt-users] Frozen repeater -- BBB Hardware Watchdog
BTW, one more thought. The 1.2.1 BBB release also includes some code to activate a Hardware Watchdog. This is not activated by default, but, might help. The watchdog resets the BBB, if a lockup is detected.
To activate the watchdog, uncomment a line near the top of the /etc/rc.local file. There is a comment in the rc.local file, too. After un-commenting, a reboot will be required (or you can start the watchdog code from the command prompt, etc.).
73, David KB4FXC
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Ah, correct! On Fri, 21 Nov 2014, Doug Crompton wrote:
This would apply to the 1.1 version but NOT the 1.2.1 version.
The users method of activating and deactivating many events and services has changed in 1.2.1
To activate the watchdog simply edit /usr/local/etc/allstar.env and
# defines the watchdog timer (enabled or disabled) # default="disabled"
export WATCHDOG="disabled"
Make the WATCHDOG parameter "enable" and reboot.
Do not change anything in rc.local or rc.allstar 73 Doug WA3DSP http://www.crompton.com/hamradio
Date: Fri, 21 Nov 2014 13:01:20 -0500 From: kb4fxc@inttek.net To: mike.lussier@gmail.com CC: app_rpt-users@ohnosec.org Subject: Re: [App_rpt-users] Frozen repeater -- BBB Hardware Watchdog
BTW, one more thought. The 1.2.1 BBB release also includes some code to activate a Hardware Watchdog. This is not activated by default, but, might help. The watchdog resets the BBB, if a lockup is detected.
To activate the watchdog, uncomment a line near the top of the /etc/rc.local file. There is a comment in the rc.local file, too. After un-commenting, a reboot will be required (or you can start the watchdog code from the command prompt, etc.).
73, David KB4FXC
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Mike, I may have missed your response to Dave about what condition you found the system in when it was not working. Was the blue heartbeat LED blinking on the BBB? Was the Green light blinking on the USB FOB? Did you have ssh access to the BBB? Based on Dave's tests it appears there may have been something else going on here. 73 Doug WA3DSP http://www.crompton.com/hamradio
Date: Fri, 21 Nov 2014 00:07:49 -0500 From: kb4fxc@inttek.net To: mike.lussier@gmail.com CC: app_rpt-users@ohnosec.org Subject: Re: [App_rpt-users] Frozen repeater
Hi Mike,
Was the URI green LED flashing (I guess not...)??
I'm rather amazed that the BBB or URI was directly the cause of the lock-up, even with really cold conditions. The simplest low-power-budget solution to keep this hardware warm is a simple Styrofoam container. Even with the minuscule BBB power consumption, Styrofoam should do the job fine.
I'll mention here, again, that the ONLY scenarios I've seen where BBB's have locked-up were due to 5VDC power woes. I completely stable 5V power source is critical. And, the 5VDC regulator might be a source of problems in extreme cold, too.
If you don't already have it, I recommend adding a cheap digital thermometer to your cabinet that records all-time temperature extremes, including time/date. Or, if you want to get fancier, the BBB AllStar release already includes support for a USB attached thermometer (see the "pcsensor" command) which will log temperature to a file, etc. Note that if you decide to go the USB thermometer route, a bug was found in the code in the 1.2.1 release. This has already been patched, but, you'll need the patch (contact me off list or search the arm-allstar list for more details).
Any idea how cold it got and for how long??? And, what is your power source??
I'm preparing to put a "test" BBB and URI in my deep-freezer (about -15 degrees Fahrenheit) for this weekend. I'll put it in there completely unprotected.
My problems in the past with such extreme cold have been issues directly with the radio hardware (like VCO's that unlock, etc.). This type of extreme thermal shock can also destroy transmitter PA's, in short order by cracking ceramic substrates in power modules, etc. (I've got a few of those Tee-shirts, too!).
73, David KB4FXC
On Thu, 20 Nov 2014, Michael Lussier wrote:
I went up on the mountain Wednesday morning. The repeater was powered up as well as the BBB. No action from the repeater. Any thoughts on low power way to keep the BBB and the URI warm ? I can use 12vdc
Sent from an iPhone 5 iOS 8
Mike.Lussier@gmail.com AE4ML@arrl.net AE4ML@amsat.org
_______________________________________________ App_rpt-users mailing list App_rpt-users@ohnosec.org http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users
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participants (5)
-
Bob Brown - WØNQX -
David McGough -
Doug Crompton -
Michael Lussier -
pete M