Raspberry Pi Forums

drgeoff

Damage to GPIOs can lead to an effect which propagates within the SoC and sooner or later causes it to fail completely. Hope for the best but be prepared.

drgeoff

1. Do not put the IP parameters in the interfaces file. Use the dhcpcd.conf file. 2. The ip_address line requires the appropriate /x at the end of the dotted quad. Eg /16 where the equivalent netmask would be 255.255.0.0 3. Hiding the SSID does not increase security and just causes more problems.

drgeoff

Both pin 2 and pin 4 on the RPI GPIO are 5 volts and are connected directly together by the PCB. As such any device will be able to take power from those pins or will have no connection to either or both. That means you can try using either on the PiTFT. Probably both will work but if only one does,...

drgeoff

Pin 4 is directly connected to pin 2. If the board is still working you can use pin 4 for any purpose that needed pin 2.

drgeoff

foul_owl wrote: ↑
Thu Jul 18, 2019 11:24 pm
would prefer to not have any resistors hanging directly off one side of the switch, it's a bit annoying and a design weakness imo.

It is not a design weakness. If series resistors were designed in, the current available from GPIOs when used as outputs would be markedly less.

drgeoff

asterdeve wrote: ↑
Thu Jul 18, 2019 2:29 pm
Yes exactly I want to run i386 32 bit software on it, How can I run i386 32 bit software on it can you tell me or is there any easy way to do that?

If you have customised the apps perhaps you have source code. If so, recompile to work on RPis.

drgeoff

See sticky https://www.raspberrypi.org/forums/view ... 8&t=245931

drgeoff

Perusal of https://www.raspberrypi.org/documentation/hardware/raspberrypi/schematics/rpi_SCH_4b_4p0_reduced.pdf will reveal to you that TP1 and the 5 volt pins of the GPIO header are electrically equivalent. Ditto for TP7 and ground pins of the GPIO header. There is no polyfuse, perfect diode or an...

drgeoff

my usual advice is to tap the fan's power to the incoming 5v line (prior to RPi4B's internal protection circuity, so that will be TP1 for +5v and TP7 for the GND), and not from the GPIO header 5v line. @LTolledo Perusal of https://www.raspberrypi.org/documentation/hardware/raspberrypi/schematics/rp...

drgeoff

amukun wrote: ↑
Wed Jul 17, 2019 9:21 pm
Isn't this just soldered on the board?
Also, should I use parts A70-112-331-N126?
Thank you

From those two questions I conclude that the probability of you successfully replacing the socket is vanishingly small.

drgeoff

Modern small fans used to cool PC chips are almost always brushless. They have active circuitry switching current on and off in stationary coils. Whatever protection incorporated for that circuitry is more than adequate to also protect an external power rail.

drgeoff

... I very much doubt it's rated to provide power for a fan. Fan is rated at 5v 0.2A so at 3.3v something like 0.13A Is that to much? I would not assume that Ohm's Law is applicable to the fan. I do not know how much current is too much to take from the 3.3 volt rail. I prefer that you, rather than...

drgeoff

Removing a multi-pin through hole component from a multi-layer board is not a simple procedure. If you are truly convinced it must be replaced I recommend dismembering the socket in place to the state where individual pins can be desoldered and removed. You may find a Dremel type tool helpful in the...

drgeoff

I would recommend you do not to connect your fan to the 3.3v on your pi , I very much doubt it's rated to provide power for a fan. +1 Use 5 volt and ground points, eg the underside of those pins on the GPIO header. If you then want to reduce fan speed/noise, experiment with various values of a seri...

drgeoff

By the way - for local addresses you do not need to hide the IP - can make debugging much much harder for folk helping. Routers will not allow access to them from outside the LAN The router will never be troubled by external traffic to those addresses. It won't even reach the router as those addres...

drgeoff

GorilaCabreado wrote: ↑
Wed Jul 17, 2019 5:09 pm
Code: Select all
static ip_address= 192.168.1.39/24
static routers=192.168.1
static domain_name_servers=192.168.1

All 3 of those lines should contain a dotted quad. Only one does.

drgeoff

See https://www.raspberrypi.org/forums/view ... 3&t=245885

drgeoff

Yes the RPi4B has an undervoltage detector and it triggers the same lightning bolt seen with previous models.

drgeoff

Maybe the "At the start of the line of parameters," in step 2 could be more explicit about what that line looks like.

drgeoff

What about separating audio channels like Right Sound - Left Sound - SubWoofer, That simple Jack socket will handle this ? No, the AV analogue jack (3.5mm TRRS) can only output 2 audio channels. Your Pioneer amp is specifically designed to take a normal analogue stereo input and separate the low fr...

drgeoff

incognitum wrote: ↑
Tue Jul 16, 2019 11:02 am

davidcoton wrote: ↑
Tue Jul 16, 2019 8:23 am
E.g. kid that bought his own Pi, but planned to borrow the charger of dad's (or mom's) Macbook.
And that Macbook may actually not even be owned by the parent, but provided by their employer.
In which case the kid should not be using the Macbook PSU. The employer has not provided it for such use.

drgeoff

The Raspberry Pi can output audio easily over 3.5mm line-level jack and HDMI. If you want audiophile quality though, you should avoid the default analog output. ghans What about separating audio channels like Right Sound - Left Sound - SubWoofer, That simple Jack socket will handle this ? No, the A...

drgeoff

I have a raspberry pi 4. I'd like to use the usb-c connector to do usb gadgets. I'd also like to power the board directly. In this configuration though, power could be obtained from the usb-c port at the same time as the direct power feed, potentially causing problems. Is there a way to ensure powe...

drgeoff

Hi, Shall You share the steps required for communicating Raspberry Pi 3 B+ with an Ubuntu Laptop, through SSH, with USBNET cable? I think USBNET cable need to be connected to one of the USB Host ports of Raspberry Pi 3 B+(not in USB slave port). Right? Neither RPi3B nor RPi3B+ has a USB slave port....

drgeoff

Being a noob to the Pi Ecosystem and new to the forum, I have an HDMI Audio passthrough question waiting in a queue well, because I am new, so I may as well ask this here - when the fixed boards are put out in the wild, will the fix interfere w/ the current mounting options of the Pi4? Reason I ask...

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