30
votes
Accepted
Raspberry Pi Zero with Ethernet Over HDMI
No, the Pi Zero does not support ethernet over HDMI.
Unfortunately the schematics for the Pi Zero are not available (edited: an overview schematics is available now, see updated information below). ...
- 15.8k
9
votes
Accepted
How can I replace Raspian SSH host keys if I can't login to pi? ("connection refused")
HOW TO REPLACE SSH HOST KEYS ON RASPBIAN W/O BOOTING INTO IT
Note: I had this happen with a recent download and install of Raspian full... it occurred on a headless pi zero W and a headless pi 3B+. ...
- 259
8
votes
How do I find out the IP address of my Pi?
You don't mention which OS you are using, but there area couple of ways to do this:
You can try ssh pi@raspberrypi or ssh raspberrypi.local (this will may need to be adjusted if not using Raspbian - ...
- 34.6k
8
votes
Accepted
How to connect Raspberry Pi Zero to PC
The way I initially connected was with a USB serial dongle at the PC end connected to the Pi's UART and ground.
You can then use terminal emulator software to log in to the Pi. You then have the old ...
- 70.5k
7
votes
Accepted
Raspberry Pi 3 isn't finding WiFi Networks
You could try executing the following through the command prompt:
sudo apt-get update
sudo apt-get upgrade
sudo apt-get dist-upgrade
sudo rpi-update
sudo reboot
wait for reboot
sudo branch=next rpi-...
- 411
7
votes
Connection between Raspberry Zero and Raspberry Pi 2 or 3
A USB OTG connection seems like the best option here. It will be much faster than about any alternative (certainly faster than I2C or UART), and with the g_ether driver you will be able to use it as a ...
- 27.7k
7
votes
Connection between Raspberry Zero and Raspberry Pi 2 or 3
By far the easiest options for moving large amounts of data between Pi Zeros and other Pis are USB OTG, which has already been covered by Dmitry Grigoryev's answer, and ethernet or WiFi.
While USB ...
- 10.7k
7
votes
Accepted
Connect Android smartphone with Wi-Fi Direct to a Raspberry Pi
I have tested this with some different smart phones using Android 4.0, Android 6.0, Android 6.0.1 and Android 10, but mainly used the last one. I cannot give all examples so I will only use a ...
- 41.9k
6
votes
Can't detect a raspberry pi scanning my local network
You already reduced the setup to a minimum to locate the error. That's what I would suggest. But there is still your network environment involved. You can try to use a wired direct device to device ...
- 41.9k
6
votes
Accepted
Couldn't ssh to my Raspberry Pi - "WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!"
If you installed a new OS it has a new key.
Any existing connection history on your computer is meaningless. Delete it!
If you create a ~/.ssh/config you can disable StrictHostKeyChecking.
I use the ...
- 58.6k
5
votes
Accepted
How to use Raspberry PI 2 without screen and keyboard?
SSH is a good way to access the command prompt over a network, via ethernet or wifi. VNC is a good way to access the desktop of your pi over a network. https://www.raspberrypi.org/documentation/remote-...
- 6,365
5
votes
Ethernet and wifi together
I have read through this post, I don't know how many times, but just today I noticed:
autho eth0
allow-hotplug eth0
iface eth0 inet static
address 192.168.0.51
netmask 255.255.255.0
I know this is ...
- 51
5
votes
reverse engineering: Transcend digital photo frame display to Raspberry Pi
The manual on the Trancend Website (see pjc50's answer) suggests that the unit will be recognised by a PC if a USB lead is connected to the mini-USB connector (C) on the SIDE of the case (not the full ...
- 3,611
5
votes
Raspberry Pi 3 - internal Wifi wont connect to network
I solved the problem.
First I updated my settings as suggested in the link that Miliways provided in a comment in my original answer.
That alone didn't solve it, what I actually had to do is change ...
- 141
5
votes
Unable to apt-get update but connected to internet?
You could also try and ping 8.8.8.8 to see if you are actually able to get packets out to the internet. If you are then check your DNS settings as per
cat /etc/resolv.conf
You would expect to see ...
5
votes
Accepted
Not able to connect using Windows Remote Desktop Connection
The RPi and the PC need to be in the same logical network, which they are not.
The computer is in the 192.168.225.0/24 network, and the Pi is in the 192.168.137.0/24 network.
You need to change ...
- 1,476
4
votes
reverse engineering: Transcend digital photo frame display to Raspberry Pi
The AM7338 is a dedicated Digital Picture Frame System on Chip (DFP SOC). It is a all in one single chip solution for DFPs, handling typical functions of buttons, IR remote, memory card and flash ...
- 301
4
votes
Accepted
Building a simple DIY rc car, am I missing anything?
Does your motor driver support controlling 2 motors?
Have you thought about talking to your motor driver(from the Pi)?
keep in mind the Bluetooth does use up the Pi's UART! (see comments for more ...
- 518
4
votes
Accepted
Connecting two Raspberry Pi's via Ethernet
The simplest way to hook up the two Pi's is to
have a cat5e/cat6 cross over cable of sufficient length
configure each Pi to have a unique static IP within the same network by editing the /etc/...
- 2,416
4
votes
Accepted
Connecting Raspberry Pi to a photo frame
The Raspberry Pi DSI (Digital Serial Interface) connection. The problem is that not all LCD/TFT screens use the same implementation. DSI is a simple interface but the LCD/TFT controller needs to work ...
- 17.3k
4
votes
How can I connect 5 Raspberry Ppi's?
The obvious way is to use the Pi's Ethernet port and network them with a switch or router.
Using the GPIO will be far more complicated and much slower.
This question has nothing to do with the Pi in ...
- 70.5k
4
votes
SSH connection refused even though ssh file is in /boot
I had the same issue, I just renamed my SSH file to ssh (all small).
and yes you've to do this before your first boot
- 141
4
votes
Using /dev/rfcomm0 in raspberry pi
You have to perform several steps in order to establish communication.
You have to pair your desired bluetooth device using bluetoothctl
sudo bluetoothctl -a
scan on
devices
pair XX:XX:XX:XX:XX:XX
...
- 2,702
4
votes
Accepted
Clients cannot connect to pivpn server anymore
Well I found the solution for me - hopefully it helps you too!
Found that /var/log/openvpn.log on the RPi had the line "VERIFY ERROR: depth=0, error=CRL has expired"
Searching that gave several ...
- 156
4
votes
Is this Solenoid Connection Correct?
"Houston, we have a problem"...
Just as an aside, and before I try to provide some answers, I should tell you I am really NOT very keen on troubleshooting project designs and blog posts that people ...
- 21.1k
4
votes
Accepted
Raspberry PI Laptop Ethernet Connectivity Issue
This is not a question belonging to Raspberry Pi. It is a problem with MS Windows. But because it is an often seen problem together with Raspberry Pi I will give a hint.
Raspbian uses a Link-local ...
- 41.9k
4
votes
Accepted
Unable to get IP address of Raspberry pi to connect via Windows remote connect
I borrowed the RPI 3B from a friend's friend. hence I don't know the
hostname so that I can ping the RPI to know its IP address.
Raspberry Pi is a board without any internal storage hence it doesn'...
- 4,285
4
votes
Reaching my Pi with MDNS (Avahi)
In the avahi.conf:
#allow-interfaces=eth0
Needs to have the # removed, restart the avahi service, and that fixed it for me.
- 41
4
votes
Accepted
Connect WiFi and Ethernet simultaneously
The setup should not be a big problem because there are no routing requirements. The wired subnet is isolated from the wireless subnet. So you can just connect wireless to the internet router with ...
- 41.9k
4
votes
Can't detect a raspberry pi scanning my local network
There are a number of problems that can cause your Pi to be not-recognized.
I will dispense with the hardware connectivity; I assume you that works.
If you do not know the Pi's address, and you have a ...
- 2,451
Only top scored, non community-wiki answers of a minimum length are eligible