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by amcdonley
Tue Nov 07, 2017 12:20 pm
Forum: Troubleshooting
Topic: Installed packages disappear after reboot
Replies: 7
Views: 2141

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: 7185

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: 5772

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: Raspberry Pi OS
Topic: My robot can't jump - (the hurdles to "Stretch")
Replies: 12
Views: 2223

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: Raspberry Pi OS
Topic: My robot can't jump - (the hurdles to "Stretch")
Replies: 12
Views: 2223

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: Raspberry Pi OS
Topic: My robot can't jump - (the hurdles to "Stretch")
Replies: 12
Views: 2223

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: Raspberry Pi OS
Topic: My robot can't jump - (the hurdles to "Stretch")
Replies: 12
Views: 2223

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: Raspberry Pi OS
Topic: My robot can't jump - (the hurdles to "Stretch")
Replies: 12
Views: 2223

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: Raspberry Pi OS
Topic: My robot can't jump - (the hurdles to "Stretch")
Replies: 12
Views: 2223

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: 7185

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: 7185

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: 7185

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...
by amcdonley
Wed Nov 01, 2017 2:39 am
Forum: Troubleshooting
Topic: sudo apt-get update uses IPv6 - have to force IPv4 to succeed
Replies: 2
Views: 2668

sudo apt-get update uses IPv6 - have to force IPv4 to succeed

I successfully installed 2017-09-17-stretch (full) headless with wpa_supplicant.conf: country=US ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev update_config=1 network={ ssid="MYWIFISSID" psk="MY11CHARPASSKEY" key_mgmt=WPA-PSK } When I try to update, it is using IPv6 $ sudo apt-get update 0...
by amcdonley
Wed Nov 01, 2017 2:03 am
Forum: Troubleshooting
Topic: Loosing my head over headless...
Replies: 42
Views: 5119

Re: Loosing my head over headless...

Edit: A quick Google search shows maybe you should use an app named TextEdit instead of textapp. TextEdit is the editor I used. I discovered my problem: I had copied the text from a web page and pasted it into TextEdit. The quote chars from the web were the Unicode left/right double quote!! My old,...
by amcdonley
Tue Oct 31, 2017 6:01 pm
Forum: Automation, sensing and robotics
Topic: Python and Robotics
Replies: 4
Views: 4042

Re: Python and Robotics

I use Python on my robot. There are great open source examples of Python available for the GoPiGo robot. BTW, GoPiGO is a well designed robot, with excellent forum for their users, and educators. If I was starting out to build a robot again, I believe the GoPiGo is the best platform and support syst...
by amcdonley
Tue Oct 31, 2017 5:34 pm
Forum: Automation, sensing and robotics
Topic: Powering a RaspberyPi for a moving robot. (Solved)
Replies: 5
Views: 1629

Re: Powering a RaspberyPi for a moving robot. (Solved)

Is there a power cell or a power pack I should look for in particular for this issue? To give good suggestions, we need to know a little more about your robot, such as: 1) Which Raspberry Pi board are you powering? 2) Are all the motors/servos powered separately from the Pi board? 3) How much run t...
by amcdonley
Tue Oct 31, 2017 1:32 pm
Forum: Troubleshooting
Topic: Loosing my head over headless...
Replies: 42
Views: 5119

Re: Loosing my head over headless...

Did you not read my posts? I just did two headless installs that went fine. "Works for me" really doesn't feel good to those of us that are seeing this issue. You may be onto something about what editor is used to create the wpa_supplicant.conf file. My recent headless stretch flogging seems to sha...
by amcdonley
Tue Oct 31, 2017 11:45 am
Forum: Troubleshooting
Topic: is the raspian mirror server down?
Replies: 19
Views: 9820

Re: is the raspian mirror server down?

Anyone know if there is a work around mirror? You could (temporarily) change the URL in /etc/apt/sources.list to one of the mirrors: https://www.raspbian.org/RaspbianMirrors http://mirrordirector.raspbian.org/raspbian/ is not working for me at the moment, so tried: deb http://raspbian.mirrors.wvsta...
by amcdonley
Tue Oct 31, 2017 1:46 am
Forum: Troubleshooting
Topic: Raspbian Stretch: Wifi not starting on boot
Replies: 94
Views: 154298

Re: Raspbian Stretch: Wifi not starting on boot

I just finished two days of flogging with "wlan0 not associated" with 2017-09-07-raspbian-stretch on a Pi3 that was playing nice under jessie-lite. I tried the headless method with: wpa_supplicant.conf per the thread head: country=US ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev update_con...
by amcdonley
Mon Oct 30, 2017 7:20 pm
Forum: Advanced users
Topic: Can Allowing Throttling Optimize Processing Throughput?
Replies: 2
Views: 875

Re: Can Allowing Throttling Optimize Processing Throughput?

solid aluminum case Indeed, that worked very nicely till I wanted to add a LIFePO4 UPS to protect my SD card from power failures. Pi3 is mounted vertically (on edge) in free air. A 15mm cube heat sink is stuck on with 3M thermal tape. That is how I was running with the UPS until I came home and fou...
by amcdonley
Sun Oct 29, 2017 2:40 pm
Forum: Advanced users
Topic: Can Allowing Throttling Optimize Processing Throughput?
Replies: 2
Views: 875

Can Allowing Throttling Optimize Processing Throughput?

I am wondering if optimal processing on my Pi3 might result from allowing short bursts of temperature caused throttling. I have been running Einstein@Home/BOINC on my Pi3 with load limits tuned to prevent temperature throttling. At these settings, the temperature hovers around 71 degrees C, and will...
by amcdonley
Sun Oct 08, 2017 2:53 pm
Forum: Troubleshooting
Topic: remote desktop from Mac to RPi "incompatible version"
Replies: 0
Views: 870

remote desktop from Mac to RPi "incompatible version"

For some reason "Screen Sharing" app from my Mac Mini (OS 10.12.6 Sierra) started reporting that that "version running on remote computer is incompatible with Screen Sharing". It seems like a crash had left some droppings in /tmp/.X11-unix/ To fix it, I did the following: ssh pi@ip.of.rpi ps -ef | g...
by amcdonley
Mon Oct 02, 2017 8:55 pm
Forum: Automation, sensing and robotics
Topic: MCP3008, Voltage Divider and Pressure Transmitter
Replies: 8
Views: 2675

Re: MCP3008, Voltage Divider and Pressure Transmitter

On my robot, I use the 5v RPi for vRef (and VDD) on the 3008, and only level shift the DOUT (using r1.r2 divider) from the 3008. The I2CS, DIN, CLK from RPi (3.3v) go straight into the 3008 no problem, no level shift needed. When running the 3008 with 5v ref, there is no need to level shift your 0-5...
by amcdonley
Mon Oct 02, 2017 7:51 pm
Forum: Troubleshooting
Topic: Throttling 0x10000?
Replies: 2
Views: 408

Re: Throttling 0x10000?

Thanks.
by amcdonley
Mon Oct 02, 2017 6:46 pm
Forum: Troubleshooting
Topic: Throttling 0x10000?
Replies: 2
Views: 408

Throttling 0x10000?

I've been running BOINC projects on my Pi3 at an average load of 2 and 70-74C, powered at 4.97v at the header for the last 18 days with no problems. I updated the OS last night, and rebooted, which started BOINC processing again. Roughly eight hours later, while showing the same load, temps, and vol...

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