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by MaxK1
Sun Feb 25, 2018 12:18 pm
Forum: Raspbian
Topic: How to tell what the kernel config is?
Replies: 3
Views: 68

Re: How to tell what the kernel config is?

man modprobe
by MaxK1
Mon Feb 19, 2018 11:58 pm
Forum: General discussion
Topic: Could I use duck billed tweezers to fix my bent micro USB pins?
Replies: 6
Views: 656

Re: Could I use duck billed tweezers to fix my bent micro USB pins?

Or use the GPIO header pin 2 or pin 4 for +5V and pin 6 for Gnd. It does bypass the protection circuitry, though. At least you will be able to power your Pi.
by MaxK1
Mon Feb 19, 2018 7:02 pm
Forum: Beginners
Topic: over clocking the pi zero W
Replies: 24
Views: 1589

Re: over clocking the pi zero W

Maybe we need a support group or some kind of 12 step program... Or a warning on the package at least!
by MaxK1
Mon Feb 19, 2018 6:42 pm
Forum: Advanced users
Topic: Powering Rasberry Pi3 + 2.5" USB3 HDD with the same PSU?
Replies: 8
Views: 281

Re: Powering Rasberry Pi3 + 2.5" USB3 HDD with the same PSU?

Whatever... It probably isn't normal to power a USB 3 device through the pi.
by MaxK1
Mon Feb 19, 2018 5:17 pm
Forum: Beginners
Topic: over clocking the pi zero W
Replies: 24
Views: 1589

Re: over clocking the pi zero W

You could just shell out another $10 and get another one and see if you get one more amenable to overclocking :twisted: But, be careful, these little things are more habit forming than chocolate covered peanuts.
by MaxK1
Mon Feb 19, 2018 1:46 pm
Forum: Troubleshooting
Topic: My Raspberry Pi 3b no longer recognize my USB pen drive
Replies: 3
Views: 117

Re: My Raspberry Pi 3b no longer recognize my USB pen drive

boot your pi normally and when it is up and running, plug the USB stick in. Open a terminal and type dmesg If there is anything in there about /dev/sda, paste that here.
by MaxK1
Mon Feb 19, 2018 1:26 pm
Forum: Beginners
Topic: Male to Male Jumper Cables
Replies: 8
Views: 248

Re: Male to Male Jumper Cables

Hmm - "Stacking headers" headers should work (Male on one side,female on the other)
by MaxK1
Mon Feb 19, 2018 1:20 pm
Forum: Beginners
Topic: PI Backup
Replies: 2
Views: 132

Re: PI Backup

Are you doing a full backup to a new archive each time, or using something that piles on changed files to an existing archive (which could easily explain what you are seeing) Otherwise, cleaning up log files, un-needed /tmp files, etc. before backing up might be in order. What are using to back up y...
by MaxK1
Mon Feb 19, 2018 12:44 pm
Forum: Advanced users
Topic: Powering Rasberry Pi3 + 2.5" USB3 HDD with the same PSU?
Replies: 8
Views: 281

Re: Powering Rasberry Pi3 + 2.5" USB3 HDD with the same PSU?

OP was asking about powering both - he didn't say if he was expecting the pi to supply power to the drive....
by MaxK1
Mon Feb 19, 2018 12:02 pm
Forum: Beginners
Topic: over clocking the pi zero W
Replies: 24
Views: 1589

Re: over clocking the pi zero W

You got 10% - the law of diminishing returns will kick in beyond that (passive and or active cooling, better (less noisy, etc.) PSU and playing with other timing and possible crash recovery add expense and time. And you still may not get there. As jamesh implied, all it takes is one gate... All over...
by MaxK1
Mon Feb 19, 2018 10:43 am
Forum: Advanced users
Topic: Historic Unix R7 using SIMH
Replies: 11
Views: 1898

Re: Historic Unix R7 using SIMH

Yup - I missed out on the PDP-8/PDP-11 experience back in the 70's (Having way too much fun on big stuff - CDC computers - Having your choice of $10M+ systems all to yourself for about 6-7 hours at a time 2-3 nights a week spoils you...) Which brings me to: Emulating "old iron" on SBC's - We have si...
by MaxK1
Sun Feb 18, 2018 4:55 pm
Forum: Troubleshooting
Topic: rpi3 wifi issues
Replies: 59
Views: 56539

Re: rpi3 wifi issues

I think so ... I haven't really pushed them hard yet.
by MaxK1
Sun Feb 18, 2018 2:31 pm
Forum: Troubleshooting
Topic: rpi3 wifi issues
Replies: 59
Views: 56539

Re: rpi3 wifi issues

I have 4 Pi 3's - One of them has a "problem" with the interface to the wifi side of the chip - BT works fine. Since that Pi now lives in a metal case, I wasn't too worried about it and installed an external USB adapter (either a Ralink or Realtek) depending on what I left plugged in. I think it got...
by MaxK1
Sun Feb 18, 2018 1:24 pm
Forum: Advanced users
Topic: Historic Unix R7 using SIMH
Replies: 11
Views: 1898

Re: Historic Unix R7 using SIMH

As Roseanne Roseannadanna would say: "Never mind...". Cockpit Error...
by MaxK1
Sun Feb 18, 2018 11:13 am
Forum: Beginners
Topic: over clocking the pi zero W
Replies: 24
Views: 1589

Re: over clocking the pi zero W

Easy enough to confirm:

/opt/vc/bin/vcgencmd measure_clock arm

and force:

force_turbo=1 (in /boot/config.txt)
by MaxK1
Sun Feb 18, 2018 5:38 am
Forum: Beginners
Topic: over clocking the pi zero W
Replies: 24
Views: 1589

Re: over clocking the pi zero W

If it was running at 100% it was probably at 1100MHz. 1100 to 1150 may have been too big a jump - try backing down to 1140 or 1130 and put the same load on it (It may boot OK, but fail under load) I would still put a heatsink on it with thermal compound or tape. Or just settle on 1100, sit back and ...
by MaxK1
Sun Feb 18, 2018 1:36 am
Forum: Beginners
Topic: over clocking the pi zero W
Replies: 24
Views: 1589

Re: over clocking the pi zero W

Not all pi's overclock equally well.
by MaxK1
Fri Feb 16, 2018 6:59 pm
Forum: Advanced users
Topic: Powering Rasberry Pi3 + 2.5" USB3 HDD with the same PSU?
Replies: 8
Views: 281

Re: Powering Rasberry Pi3 + 2.5" USB3 HDD with the same PSU?

You will need a power supply that can deliver it's full rated current at 5V. (IMHO "wall warts" and phone chargers just aren't good enough). So, what you need to do is estimate the max current both the pi and HDD can draw and look for supply that can deliver that much or more. Use short, fat cables ...
by MaxK1
Thu Feb 15, 2018 6:08 pm
Forum: Advanced users
Topic: Historic Unix R7 using SIMH
Replies: 11
Views: 1898

Re: Historic Unix R7 using SIMH

For the life of me, I can't get the 'dz' device working. The multi-user build always results in a /unix that is about 2K shorter than it should be (i've tried your recipe and everything works except telnet access on port 2000 and a couple of similar ones I found). Patching and recompiling completes ...
by MaxK1
Thu Feb 15, 2018 11:41 am
Forum: Advanced users
Topic: Fan or heatsink for overclocking the pi3
Replies: 3
Views: 196

Re: Fan or heatsink for overclocking the pi3

I use heatsinks and fans - all my pi's (and a tinkerboard) run at about 40'C - 45'c with 2 cores running 100%, one of the pi's is overclocked to 1.440GHz.
by MaxK1
Wed Feb 14, 2018 3:14 pm
Forum: Troubleshooting
Topic: Pi not booting. "end Kernel panic - not syncing: Attempted to kill init!"
Replies: 5
Views: 190

Re: Pi not booting. "end Kernel panic - not syncing: Attempted to kill init!"

The SD card may be corrupt, try mounting the linux partition from an external sd card reader - it may have reached the end of its useful life.
by MaxK1
Wed Feb 14, 2018 7:29 am
Forum: General discussion
Topic: U4 in raspberry pi3 model B
Replies: 6
Views: 312

Re: U4 in raspberry pi3 model B

I made an assumption based on some previous posts (My bad!) where U4 had been knocked off the board.
by MaxK1
Tue Feb 13, 2018 10:37 am
Forum: Beginners
Topic: Using piclone to clone openhabian
Replies: 3
Views: 137

Re: Using piclone to clone openhabian

No - for that you would need to shrink the image and use dd (or something similar)
by MaxK1
Mon Feb 12, 2018 6:08 pm
Forum: Beginners
Topic: Error string to float: !OVF
Replies: 3
Views: 125

Re: Error string to float: !OVF

We once had a large-ish energy management system that would happily take any random garbage string and convert it floating point, store it and keep on crunching (maybe). When we reported the error, the head office said (in essence) "Don't enter invalid data"... Then we found about 20000 other "probl...
by MaxK1
Mon Feb 12, 2018 4:12 pm
Forum: Beginners
Topic: Booting and OS
Replies: 14
Views: 540

Re: Booting and OS

Compare that with the installation of Unix V7 on a PDP-11... ;-)

https://drive.google.com/file/d/0B1_Jn6 ... NDQTA/view

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