Raspberry Pi Forums

pcmanbob

There are lots of pi car computer projects out there try googling it , this should give you ideas on how to power your pi from 12V DC and how to connect you pi to the various car 12V systems. You will probably need various interfaces to read the various inputs , as the pi does not have an analogue i...

pcmanbob

If you pi is connected to the same network as the Ipad then you can use realVNC viewer on the ipad to see your pi's desktop if you enable VNC on the pi, you should also be able to use SSH using one of the many ssh apps in a apple store, once you enable SSH on the pi https://apps.apple.com/gb/app/rea...

pcmanbob

With so little information its near impossible for us to help. So are theses measure voltages with anything connected to the gpio pins ? if not then I would say your pi is damaged. If these voltages are with the motor controller connected then its possible that the motor controller is using 5V contr...

pcmanbob

You probably need to update the real VNC viewer on you mac

the latest version is 7.6.1 for both windows and mac OS

from here...
https://www.realvnc.com/en/connect/download/viewer/

pcmanbob

Another option depending on were you are in the world is to look for a local computer club , someone there may be able to test them for you if you take them along.

pcmanbob

If you only have 5.5mV on pin1 then you have damaged the PMIC.

This is not reparable as you cant buy the chip on its own , your only option is to buy a new pi.

pcmanbob

If the red LED is lit then your polyfuse is ok and the protection diode will not be short circuit as that would cause the polyfuse to blow.

What exactly did you do to your pi ?

Have you checked for 3.3V on the gpio header between pin 1 and ground ( use USB socket metal work as ground.)

pcmanbob

So is it just a loss of wifi or is the OS crashing ? if you can't get a command prompt , I assume you have a screen connected, it sounds more like the OS has crashed. You could try this short script that is a variation of the script use to keep my pi zero W connected to my wifi network. #!/bin/bash ...

pcmanbob

Assuming you pi is connected to your own network the router should have a connected devices list, this should show the pi IP if its connected. I could also use one of the many IP scanners on the PC you are trying to connect from , which one will depend on the OS running on the PC but a google search...

pcmanbob

To post code on the forum you need to use code tags to preserve the indentation that python relies on to work You just need to copy your code in to your post and add code tags like this ( the bold bits are what you add ) Add [ code] at the top for i in range(8): print "code goes here" time...

pcmanbob

Well Realvnc can display a screen if you don't have a display connected, unless you set a default resolution while the screen is connected. If you look at my post in this thread https://forums.raspberrypi.com/viewtopic.php?t=334371 it wil tell you how to set the resolution on both buster and bullsey...

pcmanbob

Without details of what you actually shorted, general advice is. If you have shorted the 3.3V pin to either the ground or 5V pins on the gpio header that your pi is beyond repair and replacement is the only option. If you have only shorted 5V pin to ground then you may have only blown the poly fuse ...

pcmanbob

Well if they are not on the same sub network for example if 192.168.22.22 for server and 192.168.100.100 for pi then the would need to be some routing configured on the network router / network switch to enable the 2 computers to see each other. At least that's the way I think it should work ;) your...

pcmanbob

What have you tried ? I think this should work. #!/bin/bash # keep LAN alive ping -c2 192.168.0.1 >/dev/null 2>&1 if [ $? != 0 ] then ping -c2 192.168.100.1 >/dev/null 2>&1 if [ $? != 0 ] then ping -c2 192.168.1.1 >/dev/null 2>&1 if [ $? != 0 ] then sudo ifconfig wlan0 down sleep 5 sudo ...

pcmanbob

University networks tend to be much more strictly control that you average home network which makes it almost impossible for us to remotely solve your problem because we have no idea what rules are in place on the network. The best people to help you solve this are the network admin / tech support a...

pcmanbob

I would say unlikely to be a software problem.

what are you using as a power supply ?

what to you have connected to the pi gpio , USB that's drawing power from the 5v rail ?

pcmanbob

Usually if an SD card goes read only then it an indication the the SD card is failing or has a fault, so it goes read only to protect your data.

Your only option is to buy a new SD card.

pcmanbob

If you look at the pi not booting sticky /viewtopic.php?f=28&t=58151
You would see that it means SDram failure.

As you seems to work some times my be it's just on the verge of failing.

pcmanbob

Why don't you ask them on there own forum ?

https://www.byond.com/forum/

There is even a thread labelled " what is stopping development for linux support "

https://www.byond.com/forum/post/2846219

pcmanbob

Looking at you link a few links back there is an example of a centred menu.

https://www.w3schools.com/howto/howto_c ... ntered.asp

may be that will point you in the right direction.

pcmanbob

What are you using as a power supply ?

pcmanbob

Edit.

Missed the fact that user had achieved 91Mbits/s so removed my pointless post.

pcmanbob

As always your first port of call should be the pi not booting sticky .
/viewtopic.php?f=28&t=58151

You might also try booting your pi with no SD card but with a display/screen connected to see if you get the diagnostic screen.

pcmanbob

So you need to set a user and password as there is no default user in the OS any more, you will also need to set the SSID and password and the wifi country to enable you pi to be able to connect to your wifi network. You need to do all this in imager before burning the image to the SD card. I sugges...

pcmanbob

May be this example code will help you understand how to use edge detection. import time import RPi.GPIO as GPIO GPIO.setmode(GPIO.BCM) GPIO.setwarnings(False) count = 0 Pindetect = 21 GPIO.setup(Pindetect, GPIO.IN, pull_up_down=GPIO.PUD_UP) def my_callback(Pindetect): global count # print ("in...

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