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by johndough
Mon Dec 21, 2020 10:47 am
Forum: Troubleshooting
Topic: Zero Pi zero with a problem.
Replies: 12
Views: 484

Re: Zero Pi zero with a problem.

Thank you all. I will work thru some scenario's. The 2 USB storage devices I plug into the unpowered hub, alongside the keyboard, are recognised. One gets mounted, one is incompatible. Which gives the impression that there is sufficient power, and it is a timing or clash of addresses. So I have at l...
by johndough
Sun Dec 20, 2020 1:28 pm
Forum: Troubleshooting
Topic: Zero Pi zero with a problem.
Replies: 12
Views: 484

Re: Zero Pi zero with a problem.

Hi

Thanks for the info.

I have added a matchbox-keyboard that works with the mouse.

My PSU's are 5 volt 2100ma and I used 2 (one for the Zero and the other for the Hub)
by johndough
Sun Dec 20, 2020 12:43 pm
Forum: Troubleshooting
Topic: Zero Pi zero with a problem.
Replies: 12
Views: 484

Re: Zero Pi zero with a problem.

So No joy with any form of adding power to a hub. However I have a headless connection, and the keyboard and mouse both work. Therefore it is either a software conflict or faulty hardware methinks. OH! and the OS is suspect... sudo apt autoremove NADA sudo apt-get autoremove SUCCESS Next I will try ...
by johndough
Sat Dec 19, 2020 5:59 pm
Forum: Troubleshooting
Topic: Zero Pi zero with a problem.
Replies: 12
Views: 484

Re: Zero Pi zero with a problem.

Thankyou.

I did not expect it to be a power problem, more a shared address or resource conflict, BUT I will try.

Also gonna try remoteing in if/when I can.
by johndough
Sat Dec 19, 2020 3:10 pm
Forum: Troubleshooting
Topic: Zero Pi zero with a problem.
Replies: 12
Views: 484

Zero Pi zero with a problem.

Hi Don't know the best place to post, so I thought try here.......... Zero will not accept / work with a Keyboard AND mouse. Keyboard YES Mouse YES 4 port hub and 2 usb memory devices and keyboard YES. Add the mouse and NADA. Any suggestions? I have assorted devices, from a 2012 pi to a Pi400 and lo...
by johndough
Sun Sep 20, 2015 11:26 am
Forum: Automation, sensing and robotics
Topic: Beginner needs help with light control
Replies: 7
Views: 2523

Re: Beginner needs help with light control

Hi To control a light with a Pi, you can either fit a multipole relay or try a Telerupteur with a relay. https://www.raspberrypi.org/forums/viewtopic.php?f=37&t=103309&p=735567&hilit=+light#p735567 May give you an idea. http://www.schema-electrique.net/schema-electrique-telerupteur-unipo...
by johndough
Sat Sep 19, 2015 9:07 am
Forum: Français
Topic: Carte relais 5V 20A
Replies: 17
Views: 9623

Re: Carte relais 5V 20A

Hiya

Mon idée

http://www.schema-electrique.net/schema ... laire.html

Raspberry Pi 5v - interface/adapteur (relais / transistor) - telerupteur (avec commande manuelle)
by johndough
Sat Sep 19, 2015 9:00 am
Forum: Off topic discussion
Topic: Microsoft + Linux
Replies: 7
Views: 1648

Re: Microsoft + Linux

Hi

Hmmm

It is not listed on Distrowatch, so...
by johndough
Tue Jul 21, 2015 8:51 am
Forum: General discussion
Topic: 56k Modem with Raspberry Pi
Replies: 21
Views: 7507

Re: 56k Modem with Raspberry Pi

Hello all: Not sure if this is the right forum for this topic. Please move this if needed :) This is rather a general technology question. I live in an apartment, and we have a buzzer that connect to each unit, it operates on the telephone line. So when you dial a buzzer number, the unit's telephon...
by johndough
Tue Jul 14, 2015 9:01 am
Forum: Troubleshooting
Topic: Noobs SD card is currupt and wont format
Replies: 7
Views: 1706

Re: Noobs SD card is currupt and wont format

Hi

I use:- http://www.diskinternals.com/linux-reader/

Whis shows the partitions that are normally hidden from Windows.
LinuxReader.PNG
LinuxReader.PNG (56.02 KiB) Viewed 1462 times
I am using XP but feel certain that 8.1 would be just as capable.
by johndough
Tue Jul 14, 2015 8:38 am
Forum: Other projects
Topic: Any electronics buffs? HDMI to VGA DIY!!??
Replies: 14
Views: 18805

Re: Any electronics buffs? HDMI to VGA DIY!!??

Hi

Maybe one of these is within budget to use, and perhaps one to open up and examine?

http://www.walmart.com/c/kp/hdmi-to-vga-video-adapter
by johndough
Tue Jul 14, 2015 8:21 am
Forum: openSUSE
Topic: openSuSE works on RPi2
Replies: 0
Views: 11896

openSuSE works on RPi2

Hi I have tried on and off to get openSuSE working on my Pi2. Yesterday I did. Using the Build 317.11 (it is now 317.12) https://en.opensuse.org/HCL:Raspberry_Pi2 http://download.opensuse.org/repositories/devel:/ARM:/Factory:/Contrib:/RaspberryPi2/images/openSUSE-Tumbleweed-ARM-JeOS-raspberrypi2.arm...
by johndough
Sat Jun 13, 2015 10:12 am
Forum: Automation, sensing and robotics
Topic: 60W load frying my relays
Replies: 20
Views: 4386

Re: 60W load frying my relays

Mortimer wrote:@johndough - Peltiers are not inductive are they? I wouldn't have though derating the relay contacts for a Peltier was necessary.
Hi

No, not at all.

However if you are switching/interrupting the power supply side, you could be encountering transients etc.
by johndough
Fri Jun 12, 2015 1:40 pm
Forum: openSUSE
Topic: Luckily I broke the boot sequence for opensuse
Replies: 4
Views: 9109

Re: Luckily I broke the boot sequence for opensuse

Joe Schmoe wrote:Does the Pi have UEFI?
Hi

Probably not, but it doesn't have vmx either, which is a virtual machine file.

So for now I have to go with what is bundled in the .raw.xz file that i expand onto the SD card.
by johndough
Fri Jun 12, 2015 1:37 pm
Forum: Automation, sensing and robotics
Topic: 60W load frying my relays
Replies: 20
Views: 4386

Re: 60W load frying my relays

Hi I have a RPi switching a few devices on and off via a relay board. This has been working happily for some time now however the most powerful device has a habit of eventually breaking whichever relay it is connected to. It is a 12V/5A peltier heat pump supplied by a 60W power supply (I know this ...
by johndough
Fri Jun 12, 2015 1:20 pm
Forum: openSUSE
Topic: Luckily I broke the boot sequence for opensuse
Replies: 4
Views: 9109

Luckily I broke the boot sequence for opensuse

Hi all Well hour after hour of fruitless pi-ing. Tried several versions and all give the following error on reboot Net: Net Initialization Skipped No ethernet found Hit any key to stop autoboot: 0 switch to partitions #0, OK mmc0 is current device Scanning mmc 0:1... Found U-boot script /boot.scr 11...
by johndough
Tue Jun 02, 2015 9:11 am
Forum: openSUSE
Topic: openSUSE for RPi2
Replies: 29
Views: 41768

Re: openSUSE for RPi2

Hi I can create the imge on an SD card. Installing the openSUSE Tumbleweed Image It gives me a login cursor. I can reboot and get a failure (listing below), or zypper in yast2 and lxde and xorg etc etc and still get the same failure. Tried a few workarounds, and am completely stumped. The temptation...
by johndough
Sat May 30, 2015 8:11 am
Forum: Advanced users
Topic: Raspberry Pi Dry Contact for Curtain Control
Replies: 19
Views: 8748

Re: Raspberry Pi Dry Contact for Curtain Control

andymac37 wrote:I'm sorry. I really appreciate the help, but the information I've shared is all the manufacturer has for me.
Hi

I would attempt to measure the voltage on the control lines, and expect it to be 12 V DC.

But without more info it is not possible to be certain.
by johndough
Fri May 29, 2015 12:16 pm
Forum: openSUSE
Topic: openSUSE for RPi2
Replies: 29
Views: 41768

Re: openSUSE for RPi2

Also do you know if tumbleweed will include packages for arm7?[/quote] Hi What/which img have you used? Tumbleweed does include armv7 packages, and perhaps you could add the repositories accordingly. http://download.opensuse.org/ports/armv7hl/distribution/ I have spent days and countless gigabytes o...
by johndough
Fri May 29, 2015 10:42 am
Forum: General discussion
Topic: Help!!! Where to buy kit for my 10 year old
Replies: 10
Views: 1936

Re: Help!!!

Hi

My choice would be CPC Farnell.

But then I am already a UK customer.

http://cpc.farnell.com/raspberrypi

and the bit where it says "Everything you need to get started"

http://cpc.farnell.com/pi-ucreate

and then do your assessment.
by johndough
Tue May 26, 2015 10:30 am
Forum: Beginners
Topic: Reading mains status through GPIO
Replies: 13
Views: 2832

Re: Reading mains status through GPIO

Hi Just a thought, this may help... The idea is to connect a relay to each power supply, at it’s rated voltage (110v). Then take a supply of 3V3 from the Pi through each relay and with a resistor return it to the Pi if wanted, Connection 4. When the first power supply is in use the 3V3.(select a sui...
by johndough
Sat May 23, 2015 8:57 am
Forum: openSUSE
Topic: openSUSE for RPi2
Replies: 29
Views: 41768

Re: openSUSE for RPi2

Hi Went back to a small install. Typed in some commands and got some results... zypper ref (accept repositories and build file list) zypper in LXQT* (106 packages lower, case also works) zypper in xin* (28 packages, chose opt 1 to not break anything) zypper in Xorg* (168 packages, chose opt 1 to not...
by johndough
Tue May 19, 2015 8:20 am
Forum: openSUSE
Topic: openSUSE for RPi2
Replies: 29
Views: 41768

Re: openSUSE for RPi2

I found a version @ https://en.opensuse.org/HCL:Raspberry_Pi2 but I couldn't get the graphics working and couldn't get logged in without some serious hacking of /etc/shadow (to add a known password for root). Hi Spent many hours trying. There is a 175 meg img that boots to a CLI, zyppered in all so...
by johndough
Tue May 19, 2015 8:10 am
Forum: Automation, sensing and robotics
Topic: Relay activates, garage door doesn't
Replies: 8
Views: 3110

Re: Relay activates, garage door doesn't

Hi My opinion is the same. You don't have sufficient voltage / current to power the relays. They operate at 5volts. The Pi provides 3.3volts. You want a second and separate 5v supply just for the relay coils, and I cannot from the picture explain where this would connect. The Sainsmart board is in 3...

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