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by sparkyhall
Mon Oct 07, 2019 7:24 pm
Forum: General discussion
Topic: Raspberry Pi in Grid Down situations
Replies: 8
Views: 293

Re: Raspberry Pi in Grid Down situations

You do know that you use alt+left mouse click and drag anywhere in a window to move it on most linux desktops?
by sparkyhall
Mon Oct 07, 2019 7:11 pm
Forum: General discussion
Topic: passive heatsink shell case
Replies: 15
Views: 526

Re: passive heatsink shell case

Hi Here is the link to the report I made to the seller. https://www.dropbox.com/s/xk4yxoqlid2ri79/RPi4_shell_case.pdf?dl=0 He didn't even reply, but fully refunded me, so I really think the case I got is faulty ! I see why you returned yours now. The one I bought has two separate raised profiles in...
by sparkyhall
Sun Oct 06, 2019 8:01 pm
Forum: General discussion
Topic: piRoot: A way to run x86_64 Debian apps on Raspbian
Replies: 77
Views: 2817

Re: piRoot: A way to run x86_64 Debian apps on Raspbian

Maybe ReactOS would be an alternative to Windows XP, I've never tried or used ReactOS though.

https://reactos.org/
by sparkyhall
Sat Oct 05, 2019 9:55 am
Forum: General discussion
Topic: Lost GUI after installing MHS35 3.5" tft screen
Replies: 6
Views: 157

Re: Lost GUI after installing MHS35 3.5" tft screen

Have you followed the instructions for switching back to hdmi on page 8 of the MHS35 user manual?

http://www.lcdwiki.com/res/MHS3528/MHS- ... ual_EN.pdf
by sparkyhall
Fri Oct 04, 2019 11:19 am
Forum: General discussion
Topic: passive heatsink shell case
Replies: 15
Views: 526

Re: passive heatsink shell case

Since people keep posting about that subject, I'm posting a "reviiew" of a passive heatsink shell case the "Passive Chinese" i had to do to explain the seller that its device can't work correctly. Here is the item https://www.ebay.fr/itm/For-Raspberry-Pi-4B-Protect-Box-CNC-Aluminum-Alloy-Case-Enclo...
by sparkyhall
Sun Sep 22, 2019 3:40 pm
Forum: General discussion
Topic: Backlight blanking
Replies: 11
Views: 310

Re: Backlight blanking

I found that I could turn my display backlight on/off using "tvservice -o" and "tvservice -p" on the pi4. You can then install xscreensaver to run the tvservice command at the appropriate times. sudo apt install xscreensaver xscreensaver includes the hook “xscreensaver-command -watch”, this reports ...
by sparkyhall
Sun Sep 22, 2019 2:23 pm
Forum: General discussion
Topic: RPI4 SD boot system on usb3stick slower then a sloth
Replies: 6
Views: 289

Re: RPI4 SD boot system on usb3stick slower then a sloth

Have you remembered to update the PARTUUID in both /boot/cmdline.txt and /etc/fstab to the PARTUUID for your USB stick?

I seem to remember similar behaviour when I forgot to update one or the other.
by sparkyhall
Thu Sep 19, 2019 6:05 pm
Forum: General discussion
Topic: Armor case question
Replies: 10
Views: 304

Re: Armor case question

I have an Amor style case I bought on ebay, the gap between the CPU and the raised part of the cased measured just under 1.2mm and the pads that came with it were 1.3mm. I used a 1.2mm piece of aluminium and thermal paste on mine. Having said that I'm sure mine had a gap between the two raised parts...
by sparkyhall
Wed Sep 18, 2019 7:16 pm
Forum: General discussion
Topic: latest rpi-update 2.5ghz with 4B 4g
Replies: 31
Views: 2372

Re: latest rpi-update 2.5ghz with 4B 4g

pi-tastic wrote:
Wed Sep 18, 2019 3:20 pm
we should do an energy consumption test @ those numbers how much extra is it eating?
i have the official psu and i notice at 1.9/2ghz it gets hotter!.
On my Pi4 the 5V supply current at default clock is 1A at 100% CPU load, at 2GHz it is 1.5A, an increase of 2.5W.
by sparkyhall
Tue Sep 17, 2019 7:15 pm
Forum: Python
Topic: pymodbus
Replies: 1
Views: 103

Re: pymodbus

It looks like PyModBus will run on either Python 2.7 or 3+, have you tried installing for python 3 instead?

Code: Select all

python3 setup.py install
or

Code: Select all

pip3 install  -U pymodbus
by sparkyhall
Fri Sep 13, 2019 11:58 am
Forum: General discussion
Topic: latest rpi-update 2.5ghz with 4B 4g
Replies: 31
Views: 2372

Re: latest rpi-update 2.5ghz with 4B 4g

I suspect you are overloading the PMIC overclocking this high. The PMIC is a MxL7704 and the main out is rated to 4A, at 1V that's only 4W. When I ran my Pi4 at 2GHz the 5V supply current went from 1A at 100% CPU load to 1.5A, an increase of 2.5W. At a guess at 2.5GHz you are likely to have increase...
by sparkyhall
Sun Sep 08, 2019 9:20 am
Forum: General discussion
Topic: Wildhog alarm
Replies: 5
Views: 299

Re: Wildhog alarm

I'll second pikrellcam, it works really well on a pi zero.

Perhaps an old camera flash in addition to an ultrasonic transducer will scare them?
by sparkyhall
Mon Aug 19, 2019 7:46 pm
Forum: Gentoo
Topic: Bootable 64-bit Gentoo image for the RPi4 released (Xfce4 desktop)
Replies: 34
Views: 5898

Re: Bootable 64-bit Gentoo image for the RPi4 released (Xfce4 desktop)

Thanks Sakaki, it's working really well here. My first time using Gentoo so I've got some reading to do, I really appreciate the image and first class instructions you have provided, probably never have tried Gentoo without this. I'm amazed at how much smoother the scrolling is in Firefox when compa...
by sparkyhall
Sun Aug 18, 2019 8:10 am
Forum: General discussion
Topic: No internal cpu temp or voltage sensor on Pi 4?
Replies: 4
Views: 458

Re: No internal cpu temp or voltage sensor on Pi 4?

You can also use vcgencmd measure_volts to monitor the core voltage.

As an alternative to measure CPU temperature you can use the following from a terminal:

Code: Select all

cat /sys/class/thermal/thermal_zone0/temp
You can also add the "CPU Temperature" panel applet to the task bar on the Raspbian desktop.
by sparkyhall
Fri Aug 16, 2019 1:41 pm
Forum: General discussion
Topic: sudo startx error
Replies: 8
Views: 265

Re: sudo startx error

You should not startx as the root user, start it as a normal user (i.e. without sudo).
by sparkyhall
Wed Aug 14, 2019 9:46 am
Forum: General discussion
Topic: Desktop Widget Conky
Replies: 1
Views: 150

Re: Desktop Widget Conky

I do, see image below:
conky.png
conky.png (173.16 KiB) Viewed 119 times
by sparkyhall
Tue Aug 13, 2019 9:49 pm
Forum: General discussion
Topic: Raspbian Buster editing file over network corrupts file contents?
Replies: 11
Views: 373

Re: Raspbian Buster editing file over network corrupts file contents?

Many linux file explorers (pcmanfm, Thunar, Nautilus etc) use gvfs to mount remote file systems, the idea being that gvfs presents the file system in a standard format to applications such that they work as if working on local files. After some experimenting I discovered that the problem I see appea...
by sparkyhall
Tue Aug 13, 2019 5:11 pm
Forum: General discussion
Topic: 64-bit weekly kernel autobuilds for RPi4 released (bcm2711_defconfig)
Replies: 94
Views: 9434

Re: 64-bit weekly kernel autobuilds for RPi4 released (bcm2711_defconfig)

This is all brilliant news, never tried Gentoo before, you've just tempted me ;)

Nice work Sakaki.
by sparkyhall
Tue Aug 13, 2019 4:53 pm
Forum: General discussion
Topic: Search for a motor controller
Replies: 5
Views: 231

Re: Search for a motor controller

You probably want to search for an H-Bridge.
by sparkyhall
Tue Aug 13, 2019 4:46 pm
Forum: General discussion
Topic: Raspbian Buster editing file over network corrupts file contents?
Replies: 11
Views: 373

Re: Raspbian Buster editing file over network corrupts file contents?

I just tried this on my Pi4 by editing a text file in leafpad over sftp, added some text, hit save, closed leafpad, re-opened file and it was empty with a size of zero. I got no errors or warnings :o

Tried a couple of times and the same thing!

Looks like a nasty little bug, good job I have backups.
by sparkyhall
Fri Aug 09, 2019 6:41 pm
Forum: General discussion
Topic: No sound in external USB speakers for other account as "pi"
Replies: 1
Views: 89

Re: No sound in external USB speakers for other account as "pi"

Is your son a member of the "audio" group?

Log in as your son and type "groups" in a terminal to find out what groups he belongs too.
by sparkyhall
Sat Mar 09, 2019 4:19 pm
Forum: Python
Topic: How to test encoder with raspberry Pi
Replies: 30
Views: 1780

Re: How to test encoder with raspberry Pi

The electrical output specification for this encoder is as follows:

A,/A & B,/B outputs are TTL/RS422
Maximum load current per output <= 30mA
Maximum output frequency =300kHz

The encoder is reverse polarity protected and short circuit protected.
by sparkyhall
Sat Mar 09, 2019 8:32 am
Forum: General discussion
Topic: Pi zero W - Goodnight Message on Low Power
Replies: 3
Views: 226

Re: Pi zero W - Goodnight Message on Low Power

If you create a rc.local_shutdown in /etc that may still work, that's how it used to be done. Failing that I would think systemd can do something similar.
by sparkyhall
Sat Mar 09, 2019 8:02 am
Forum: Python
Topic: How to test encoder with raspberry Pi
Replies: 30
Views: 1780

Re: How to test encoder with raspberry Pi

champ1 wrote:
Sat Mar 09, 2019 7:37 am

I have domino encoder model GPI9109 But I couldn't get the datasheet on internet, searching from long time

only pin description is there on the product
That doesn't look like a Domino number, can you post a picture of the label?

If not does that label include the number 14828?

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