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by amcdonley
Tue Nov 28, 2017 1:30 am
Forum: Troubleshooting
Topic: Solved: After rpi-update my robot can't feel his toes
Replies: 3
Views: 442

Re: Solved: After rpi-update my robot can't feel his toes

Why did you use rpi-update? It's not recommended for casual users. I was warned "Or for the brave and foolhardy", in a suggestion in response to my Pi3 built-in WiFi frustrations. If you are giving feedback for experimental software then you'll need to provide much more information than 'this versi...
by amcdonley
Tue Nov 28, 2017 12:12 am
Forum: Troubleshooting
Topic: Solved: After rpi-update my robot can't feel his toes
Replies: 3
Views: 442

Solved: After rpi-update my robot can't feel his toes

After I did an rpi-update this morning, my robot couldn't move and felt weak (no motor PWM and couldn't SPI to the Analog Digital Converter ). I reverted the firmware and my robot feels much better again. This one works: uname -a: Linux RWPi 4.9.41-v7+ #1023 SMP Tue Aug 8 16:00:15 BST 2017 armv7l GN...
by amcdonley
Mon Nov 27, 2017 11:58 am
Forum: Troubleshooting
Topic: Pi3 onboard Wifi: Ping Request timeouts
Replies: 6
Views: 1940

Re: Pi3 onboard Wifi: Ping Request timeouts

Run this sudo apt update && sudo apt -y dist-upgrade && sudo reboot Or for the brave and foolhardy sudo rpi-update && sudo reboot The following packages will be upgraded: libsmbclient libwbclient0 samba-common samba-libs 4 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. your firmware w...
by amcdonley
Mon Nov 27, 2017 10:55 am
Forum: Troubleshooting
Topic: Pi3 onboard Wifi: Ping Request timeouts
Replies: 6
Views: 1940

Re: Pi3 onboard Wifi: Ping Request timeouts

DougieLawson wrote:
Mon Nov 27, 2017 8:08 am
What kernel version are you running?
uname -a:

Linux RWPi 4.9.41-v7+ #1023 SMP Tue Aug 8 16:00:15 BST 2017 armv7l GNU/Linux

vcgencmd version:
Aug 8 2017 12:05:45
Copyright (c) 2012 Broadcom
version 196063438d7bb0769861c86f948ae653727adb7e (clean) (release)
by amcdonley
Sat Nov 25, 2017 3:04 pm
Forum: Advanced users
Topic: Disable power management in Stretch
Replies: 12
Views: 41189

Re: Disable power management in Stretch

added to /etc/rc.local: iwconfig wlan0 power off resulted in my Stretch Pi3 onboard wifi power management being permanently off. For my robot, this reduces the tx excessive retries by a factor of 10, and incoming ping Request timeouts by a factor of 2. Linux RWPi 4.9.41-v7+ #1023 SMP Tue Aug 8 16:00...
by amcdonley
Fri Nov 24, 2017 10:08 pm
Forum: Troubleshooting
Topic: Second SD card went read-only - Is shutdown -h now safe?
Replies: 3
Views: 884

Second SD card went read-only - Is shutdown -h now safe?

Recently my robot suffered its second "read-only" SD card failure. At the moment, if my robot detects that it only has a few minutes of life left, it executes an os.system( "sudo shutdown -h now") Is shutdown -h now safe to issue? The robot launches several Python processes to manage sensor readings...
by amcdonley
Fri Nov 24, 2017 9:12 pm
Forum: Troubleshooting
Topic: Pi3 onboard Wifi: Ping Request timeouts
Replies: 6
Views: 1940

Pi3 onboard Wifi: Ping Request timeouts

My robot has a (new) Pi3 running updated Raspbian Stretch, with a remote ssh session over wlan0, and a Python2.7 multi-process sensor status loop running, with a 15 minute top load of 0.10 When I ping the bot via WiFi, I see about 10 "Request timeout for icmp_seq x" per hour. With power management o...
by amcdonley
Thu Nov 09, 2017 2:23 pm
Forum: Troubleshooting
Topic: Green LED blinks 30 times on shutdown
Replies: 5
Views: 757

Re: Green LED blinks 30 times on shutdown

RaTTuS wrote:
Thu Nov 09, 2017 12:40 pm
I suspect your wiring ;-p
For sure, my wiring is known to be weird. The robot's, on the other hand, ...
by amcdonley
Thu Nov 09, 2017 12:38 pm
Forum: Troubleshooting
Topic: Green LED blinks 30 times on shutdown
Replies: 5
Views: 757

Re: Green LED blinks 30 times on shutdown

Not normal Thanks. And for all your assistance in chasing the WiFi issue. I ordered up a new Pi3. This is the second Pi, out of four, my robot has messed up. I keep trying to enable it to be more capable, but it seems to be resisting artificial intelligence. (It began “life” 18 years ago with 32k o...
by amcdonley
Thu Nov 09, 2017 11:37 am
Forum: Troubleshooting
Topic: Green LED blinks 30 times on shutdown
Replies: 5
Views: 757

Green LED blinks 30 times on shutdown

I have been used to waiting for the 10 blinks on shutdown of jessie-lite. I'm on "full" stretch now, and seeing the green LED flash 30 times on shutdown. Is this the new normal, or has my Pi gained consciousness and is trying to tell me not to shut it off?
by amcdonley
Wed Nov 08, 2017 11:06 pm
Forum: Troubleshooting
Topic: Intermittent WiFi and apt-get errors only with Pi3 built-in
Replies: 2
Views: 417

Re: Intermittent WiFi and apt-get errors only with Pi3 built-in

Do you plan on using two wifi devices? If so, you should use persistent network names. Otherwise, it is almost impossible to tell which names they will use. How is the signal after you reboot? Use iwconfig to check. Plan: No I don't want to need the dongle, but the on-board is no long working well ...
by amcdonley
Wed Nov 08, 2017 7:08 pm
Forum: Troubleshooting
Topic: Intermittent WiFi and apt-get errors only with Pi3 built-in
Replies: 2
Views: 417

Intermittent WiFi and apt-get errors only with Pi3 built-in

Issue: Intermittent WiFi over built-in Pi3 interface, "Release file not found" on apt-get update Work-around: Use USB WiFi dongle (or wired Ethernet) for wlan0 (try reboot again if dongle configures as wlan1) Aspects: ifconfig shows no packet errors or dropped packets. Issue seen on Jessie, jessie-l...
by amcdonley
Tue Nov 07, 2017 2:46 pm
Forum: Other projects
Topic: Project: Running BOINC Distributed Computing
Replies: 0
Views: 570

Project: Running BOINC Distributed Computing

I didn't see a BOINC project thread - sorry if this is a dup. I have a desktop Pi3 which has nothing to do for most of the day, so I installed BOINC and joined the RaspberryPi team running Einstein@home tasks. I also configured 25% of my BOINC processing to go to the SETI@Home project. Originally, m...
by amcdonley
Tue Nov 07, 2017 12:20 pm
Forum: Troubleshooting
Topic: Installed packages disappear after reboot
Replies: 7
Views: 1599

Re: Installed packages disappear after reboot

I have had two Samsung EVO 16g cards “die” with this same MO over the last year.
by amcdonley
Tue Nov 07, 2017 12:31 am
Forum: Python
Topic: pip install is throwing lots of errors
Replies: 7
Views: 6125

Re: pip install is throwing lots of errors

ksharindam wrote:
Mon Nov 06, 2017 4:40 pm
Try to update setuptools
Thank you, that seems to have done the trick.

$ sudo pip install --upgrade setuptools
by amcdonley
Mon Nov 06, 2017 12:11 pm
Forum: Troubleshooting
Topic: “apt-get update” fails
Replies: 10
Views: 4453

Re: “apt-get update” fails

See those ipv6 addresses?

Try disabling ipv6:

$ sudo nano /boot/cmdline.txt
And add at end of file this:
ipv6.disable=1
(Ctrl-x, y, return)

$ sudo reboot now

Now try your update again.
by amcdonley
Sat Nov 04, 2017 10:26 pm
Forum: Raspbian
Topic: My robot can't jump - (the hurdles to "Stretch")
Replies: 12
Views: 1888

Solved Sort Of: My robot can't jump - (the hurdles to "Stretch")

It appears this particular Pi3 may have developed a built-in WIFI problem. It was working fine for the prior six months. Then I had the SD card go "read-only", and now this. I tried curl http://mirrors.ocf.berkeley.edu/raspbian/raspbian/dists/stretch/Release. On my mac it succeeds. On my DeskPi3 it ...
by amcdonley
Fri Nov 03, 2017 1:30 am
Forum: Raspbian
Topic: My robot can't jump - (the hurdles to "Stretch")
Replies: 12
Views: 1888

Re: My robot can't jump - (the hurdles to update "Stretch")

Someone, please tell me what is wrong in my world? This is the Stretch experience: 1) downloaded 2017-09-07-raspian-stretch.zip 2) put it on 16gb card with Etcher (using Mac) 3) Pull out, reinsert card to mount boot partition 4) add wpa_supplicant.conf to boot partition: country=US ctrl_interface=D...
by amcdonley
Thu Nov 02, 2017 1:33 pm
Forum: Raspbian
Topic: My robot can't jump - (the hurdles to "Stretch")
Replies: 12
Views: 1888

Re: My robot can't jump - (the hurdles to "Stretch")

I don't think this is a DNS issue. When I browse the archive, the armhf package really does not exist - only binary-armhf exists, in both main/ and ui/ Err http://archive.raspberrypi.org jessie/main armhf Packages 404 Not Found [IP: 93.93.135.188 80] Err http://archive.raspberrypi.org jessie/ui armh...
by amcdonley
Thu Nov 02, 2017 11:23 am
Forum: Raspbian
Topic: My robot can't jump - (the hurdles to "Stretch")
Replies: 12
Views: 1888

Re: My robot can't jump - (the hurdles to "Stretch")

Okay, that got me curious, so I made two freshly imaged SD cards with the last Jessie and the current Stretch and tested them both in my Pi Zero with a Raspbian compatible USB WiFi dongle. This leaves me wondering if you are having DNS issues with your ISP? Try changing your DNS to OpenDNS or Googl...
by amcdonley
Thu Nov 02, 2017 3:44 am
Forum: Raspbian
Topic: My robot can't jump - (the hurdles to "Stretch")
Replies: 12
Views: 1888

Re: My robot can't jump - (the hurdles to "Stretch")

Going back to Jessie is actually a fine option, Actually, something too weird - 2017-07-05-raspbian-jessie complains about the same files missing, and tries IPv6. The IPv4 issue I can fix, but the missing files on a clean install, makes me question the repositories: $ sudo apt-get -o Acquire::Force...
by amcdonley
Wed Nov 01, 2017 3:24 pm
Forum: Raspbian
Topic: My robot can't jump - (the hurdles to "Stretch")
Replies: 12
Views: 1888

My robot can't jump - (the hurdles to "Stretch")

My "jessie-lite" robot recently had its SD card turn read only, so I decided to try rebuilding it on Stretch. The initial hurdles make me wonder if my 17 year old robot should wait until Stretch gets over "growing pains". The first two steps in my build process are: 1) update the OS 2) use pip to in...
by amcdonley
Wed Nov 01, 2017 11:52 am
Forum: Python
Topic: pip install is throwing lots of errors
Replies: 7
Views: 6125

Re: pip install is throwing lots of errors

Also tried:

Code: Select all

$sudo mv /usr/share/python-wheels/urllib3-1.19.1-py2.py3-none-any.whl /usr/share/python-wheels/urllib3-1.19.1-py2.py3-none-any.whl.bak
StackExchange post suggested "remove /usr/share/python-wheels/urllib3-1.19.1-py2.py3-none-any.whl" worked for that person.
by amcdonley
Wed Nov 01, 2017 11:49 am
Forum: Python
Topic: pip install is throwing lots of errors
Replies: 7
Views: 6125

Re: pip install is throwing lots of errors

Thank you for the reply. No luck for me: pi@RWPi:~ $ sudo pip install --upgrade requests Exception: Traceback (most recent call last): File "/usr/lib/python2.7/dist-packages/pip/basecommand.py", line 215, in main status = self.run(options, args) File "/usr/lib/python2.7/dist-packages/pip/commands/in...
by amcdonley
Wed Nov 01, 2017 2:48 am
Forum: Python
Topic: pip install is throwing lots of errors
Replies: 7
Views: 6125

pip install is throwing lots of errors

I just installed 2017-09-17-stretch and seeing lots of errors when attempting a pip install speedtest-cli. Any clues? sudo pip install speedtest-cli Collecting speedtest-cli Exception: Traceback (most recent call last): File "/usr/lib/python2.7/dist-packages/pip/basecommand.py", line 215, in main st...

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