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by hippy
Sat Sep 14, 2019 7:10 pm
Forum: Troubleshooting
Topic: Pi4 solid red and green led
Replies: 12
Views: 313

Re: Pi4 solid red and green led

Are there any statistics on RMAs available? I doubt there are any publicly available. The best one can really do is monitor the forum for reports of issues. And in that respect I have noted 8 reports of "Green light of death" failures. I believe it has been reported a million Pi 4B have been sold. ...
by hippy
Sat Sep 14, 2019 11:14 am
Forum: Troubleshooting
Topic: RPi3 not booting after amplifier was wrongly connected
Replies: 2
Views: 77

Re: RPi3 not booting after amplifier was wrongly connected

Electronics really don't like reversed voltages so I would imagine you have created a domino-like cascade of failures.

The power LED may come on but everything else is likely dead or damaged, at least enough to prevent it booting.
by hippy
Fri Sep 13, 2019 5:09 pm
Forum: Troubleshooting
Topic: 3V3 shorted to ground, Pi 3B+ now will not boot
Replies: 8
Views: 149

Re: 3V3 shorted to ground, Pi 3B+ now will not boot

Your problem here is in that IIRC the PMIC isn't available to buy in the configuration used by the RPi That's what I thought, but at least one poster claims to have obtained one - https://www.raspberrypi.org/forums/viewtopic.php?t=240280#p1524527 I bought MX7704-R3 chip at Aliexpress and fixed my P...
by hippy
Fri Sep 13, 2019 5:05 pm
Forum: Beginners
Topic: What is purpose of powering a breadboard's power rail but not used
Replies: 5
Views: 134

Re: What is purpose of powering a breadboard's power rail but not used

Some diagrams may include unused power connections because the circuit being shown is later going to be modified for other things - Such as demonstrating a button which works by shorting to 3V3 rather than 0V, a LED whose anode is connected to 3V3 which is lit by applying a low signal, rather than c...
by hippy
Fri Sep 13, 2019 1:44 pm
Forum: Troubleshooting
Topic: Pi 3B+ / Shorting 3.3V to GND
Replies: 3
Views: 68

Re: Pi 3B+ / Shorting 3.3V to GND

https://www.raspberrypi.org/forums/viewtopic.php?p=1459786#p1459786 if someone with a rework station want to buy lets say 100 PMIC's (to provide a repair service) then we could probably accomodate them. But its simply too expensive for us to have sales of individual chips. https://www.raspberrypi.or...
by hippy
Fri Sep 13, 2019 10:02 am
Forum: Networking and servers
Topic: Serial vs. Ethernet
Replies: 4
Views: 161

Re: Serial vs. Ethernet

Given both work over USB I wouldn't expect there to be any reliability issues whether ethernet or serial. I also wouldn't expect there to be any problems during garbage collection. Any issues when a program is stalled, not actually reading the data sent, I would expect to depend on how much data is ...
by hippy
Fri Sep 13, 2019 9:29 am
Forum: Troubleshooting
Topic: 3V3 shorted to ground, Pi 3B+ now will not boot
Replies: 8
Views: 149

Re: 3V3 shorted to ground, Pi 3B+ now will not boot

It is possible to replace the MxL7704-R3 PMIC on a 3B+ but that won't be easy without the equipment and skills to do that -

https://www.raspberrypi.org/forums/view ... p?t=240280
by hippy
Thu Sep 12, 2019 4:10 pm
Forum: Off topic discussion
Topic: How to Install Microsoft windows 10 operating systems ?
Replies: 26
Views: 674

Re: How to Install Microsoft windows 10 operating systems ?

Maybe RPF/RPT need to approach Microsoft for a formal statement even if it’s a dodge that comes back (e.g. We have no plans in the next ‘x’ months) Microsoft are no more likely to comment on future plans than the RPF/RPT is. If they want something known they will make it known but otherwise will us...
by hippy
Thu Sep 12, 2019 2:47 pm
Forum: Other projects
Topic: 4 pin momentary switch
Replies: 3
Views: 77

Re: 4 pin momentary switch

I made some research and I know i need to connect um pin to the ground and another one to 5v gpio pin. No, not quite. Don't do that, it could well damage something. My problem is I bought some momentary switch with 4 pins, something like this one: ... I would like to know witch pins I need to conne...
by hippy
Thu Sep 12, 2019 1:43 pm
Forum: Off topic discussion
Topic: How to Install Microsoft windows 10 operating systems ?
Replies: 26
Views: 674

Re: How to Install Microsoft windows 10 operating systems ?

jbudd wrote:
Thu Sep 12, 2019 1:38 pm
Huh?
It's just a reminder of what has been said in the past when installing Windows 10 Desktop on a Pi has been discussed.

Clicking the up-arrow link in the quote will take you to the original, and the thread which gives it context.
by hippy
Thu Sep 12, 2019 1:28 pm
Forum: Off topic discussion
Topic: How to Install Microsoft windows 10 operating systems ?
Replies: 26
Views: 674

Re: How to Install Microsoft windows 10 operating systems ?

EVERY SINGLE BLOODY TIME this subject comes up, some OS dick who thinks they know something always starts slagging off Windows. DONT DO IT. Next time you will be banned. I use Linux EVERYWHERE and yet I do not feel the need to go all MS hatey. If you do, please keep it to yourself, and I'd suggest ...
by hippy
Thu Sep 12, 2019 12:21 pm
Forum: Off topic discussion
Topic: How to Install Microsoft windows 10 operating systems ?
Replies: 26
Views: 674

Re: How to Install Microsoft windows 10 operating systems ?

You can't! A raspberry PI doesn't use an intel/AMD (x86) processor, so you can't really install any real Windows Desktop OS on it, except when you emulate an x86 CPU with the PI's ARM CPU Windows on ARM runs Windows 10 Desktop natively on ARM, only using emulation to execute X86 applications. There...
by hippy
Thu Sep 12, 2019 11:21 am
Forum: Troubleshooting
Topic: What is maximum amperage provided by Pi 3 B +
Replies: 2
Views: 78

Re: What is maximum amperage provided by Pi 3 B +

luchiand wrote:
Thu Sep 12, 2019 9:24 am
what is the maxim amperage Raspberry Pi 3 can provide through its USB without being damaged?
The Pi 3B+ has a USB current-limiter which should prevent the Pi itself from being damaged by USB devices drawing too much current.
by hippy
Thu Sep 12, 2019 11:15 am
Forum: General discussion
Topic: Back Voltage from USB Hub
Replies: 8
Views: 267

Re: Back Voltage from USB Hub

geffers wrote:
Thu Sep 12, 2019 8:47 am
I was very surprised when the Pi booted up as soon as I connected the hub to the Pi.
You don't mention which model of Pi you have so it is hard to tell if you should have been surprised or not.
by hippy
Thu Sep 12, 2019 10:05 am
Forum: Python
Topic: Python in Raspbian Lite treats input() as a number.
Replies: 7
Views: 185

Re: Python in Raspbian Lite treats input() as a number.

model 14 wrote:
Wed Sep 11, 2019 10:16 pm
I have been learning Python on my Windows computer (V 3.7.4). I just started working with Python on my new RPi 4B (V 2.7.16) using Raspbian Lite.
The simple answer is to use Python 3 on the Pi, then your code will work the same on both.

Use "python3 yourfile.py" rather than "python yourfile.py".
by hippy
Thu Sep 12, 2019 9:56 am
Forum: General discussion
Topic: New received pi4 with possible defect
Replies: 9
Views: 399

Re: New received pi4 with possible defect

one of the left seems to be misaligned? or is this normal? The component seems to have been soldered to the board with correct alignment but may have been knocked in transit. The right-hand leg of the component seems to have at least partially detached from the body, the left-hand leg less so. As s...
by hippy
Wed Sep 11, 2019 5:09 pm
Forum: Beginners
Topic: how to delete python?
Replies: 5
Views: 196

Re: how to delete python?

I am afraid I can't really help further. If it were me I would cut my losses, accept defeat, backup everything important, start with a fresh install of Raspbian. That would seem to be the quickest route to being back on a firm foundation.
by hippy
Wed Sep 11, 2019 2:08 pm
Forum: Raspberry Pi Desktop for PC and Mac
Topic: Raspberry PI Desktop on HDD
Replies: 2
Views: 84

Re: Raspberry PI Desktop on HDD

There doesn't seem to be any reason you couldn't swap the DVD for another HDD, SATA or PATA. I would remove the DVD and existing HDD, install the new "RPD HDD" in place of the DVD, install to that, then set about making things dual boot, or 'doing it properly' once you have proved everything will wo...
by hippy
Wed Sep 11, 2019 1:08 pm
Forum: Beginners
Topic: how to delete python?
Replies: 5
Views: 196

Re: how to delete python?

I recall someone else doing the same, messed up their Python, tried to fix that, uninstalled, reinstalled, made things worse. But I believe they did eventually solve the issue without a complete reinstall of Raspbian. Might be worth searching the forum for those posts, or via Google. Might be this o...
by hippy
Wed Sep 11, 2019 12:58 pm
Forum: Troubleshooting
Topic: RPi 4 - power problem
Replies: 9
Views: 260

Re: RPi 4 - power problem

As it is verry simple. still here is diagram and photo of the wiring. I don't see any current limiting resistors on your LED's nor the LED of the opto. And the LED of the opto seems to be wired back to front, anode to 0V, when it should be cathode to 0V. None of that though should cause the SD Card...
by hippy
Wed Sep 11, 2019 12:27 pm
Forum: Beginners
Topic: making pi as hotspot
Replies: 11
Views: 255

Re: making pi as hotspot

Don't know if this will help but these are my verbatim notes for enabling AP access with no password as a Captive Portal on a 3B under Buster. I have my AP as 10.10.10.10, allocating 10.10.10.100-200. Should be easy enough to modify. After installation and configuration, I have been calling these CL...
by hippy
Tue Sep 10, 2019 6:16 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: USB to Serial adapter
Replies: 2
Views: 107

Re: USB to Serial adapter

I need to interface with a device from windows, it's a UPS. When i connect it to my server, it sees it as a Cypress USB-To-Serial device, it shows up in device manager as 2 separate devices 1. HID Compliant Device (HID\VID_0665&PID_5161&REV_0002) 2. USB Input Device (USB\VID_0665&PID_5161&REV_0002)...
by hippy
Tue Sep 10, 2019 5:48 pm
Forum: Beginners
Topic: Arduino IDE on Raspberry Pi Zero W
Replies: 40
Views: 786

Re: Arduino IDE on Raspberry Pi Zero W

There's the reboot-the-Zero-when-unplugging-USB issue that there's not much you can do about Can the developers of Raspbian fix it, or even they can't? I am not sure anyone even knows what the cause of the problem is, and that's a prerequisite to fixing it, or being able to avoid the issue. In-rush...
by hippy
Tue Sep 10, 2019 2:41 pm
Forum: Off topic discussion
Topic: [Solved] Very busy today?
Replies: 23
Views: 1208

Re: Very busy today?

Just to note that things seemed to have settled down from a week ago but I have been getting a lot of 'high traffic' pages throughout today.
by hippy
Tue Sep 10, 2019 1:09 pm
Forum: Beginners
Topic: Arduino IDE on Raspberry Pi Zero W
Replies: 40
Views: 786

Re: Arduino IDE on Raspberry Pi Zero W

If you want a lighter solution, there's the kinda bleeding-edge arduino-cli system: https://github.com/arduino/arduino-cli It seems it is possible to use the compiler from the command line without needing that - pi@Pi3B:/tmp $ cat x.ino void setup() { printf("Compiled on command line\n"); } void lo...

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