Category: hardware_

https://sendgrid.com/blog/complete-guide-set-raspberry-pi-without-keyboard-mouse/

https://github.com/motdotla/ansible-pi

First thing is you need a file called ‘ssh’ on the raspbian to enable it:.

https://www.raspberrypi.org/forums/viewtopic.php?t=144839

ok so I found the IP address of the PI

root@chrx:~# nmap -sP 192.168.101.0/24

Starting Nmap 7.60 ( https://nmap.org ) at 2020-04-05 17:06 UTC
Nmap scan report for _gateway (192.168.101.1)
Host is up (0.0026s latency).
MAC Address: B8:69:F4:1B:D5:0F (Unknown)
Nmap scan report for 192.168.101.43
Host is up (0.042s latency).
MAC Address: 28:0D:FC:76:BB:3E (Sony Interactive Entertainment)
Nmap scan report for 192.168.101.100
Host is up (0.049s latency).
MAC Address: 18:F0:E4:E9:AF:E3 (Unknown)
Nmap scan report for 192.168.101.101
Host is up (0.015s latency).
MAC Address: DC:85:DE:22:AC:5D (AzureWave Technology)
Nmap scan report for 192.168.101.103
Host is up (-0.057s latency).
MAC Address: 74:C1:4F:31:47:61 (Unknown)
Nmap scan report for 192.168.101.105
Host is up (-0.097s latency).
MAC Address: B8:27:EB:03:24:B0 (Raspberry Pi Foundation)
Nmap scan report for 192.168.101.111
Host is up (-0.087s latency).
MAC Address: 00:24:D7:87:78:EC (Intel Corporate)
Nmap scan report for 192.168.101.121
Host is up (-0.068s latency).
MAC Address: AC:E0:10:C0:84:26 (Liteon Technology)
Nmap scan report for 192.168.101.130
Host is up (-0.097s latency).
MAC Address: 80:5E:C0:52:7A:27 (Yealink(xiamen) Network Technology)
Nmap scan report for 192.168.101.247
Host is up (0.15s latency).
MAC Address: DC:4F:22:FB:0B:27 (Unknown)
Nmap scan report for chrx (192.168.101.127)
Host is up.
Nmap done: 256 IP addresses (11 hosts up) scanned in 2.45 seconds

if nmap is not installed,

apt-get install nmap

Connect to whatever IP it is

ssh -vvvv pi@192.168.101.105

Are you sure you want to continue connecting (yes/no)? yes

Cool, and to set up wifi, let’s check out this ansible script https://github.com/motdotla/ansible-pi

$ sudo apt update
$ sudo apt install software-properties-common
$ sudo apt-add-repository --yes --update ppa:ansible/ansible
$ sudo apt install ansible

ok 58MB install…

# ansible-playbook playbook.yml -i hosts –ask-pass –become -c paramiko

PLAY [Ansible Playbook for configuring brand new Raspberry Pi]

TASK [Gathering Facts]

TASK [pi : set_fact]
ok: [192.168.101.105]

TASK [pi : Configure WIFI] **
changed: [192.168.101.105]

TASK [pi : Update APT package cache]
[WARNING]: Updating cache and auto-installing missing dependency: python-apt
ok: [192.168.101.105]

TASK [pi : Upgrade APT to the lastest packages] *
changed: [192.168.101.105]

TASK [pi : Reboot] **
changed: [192.168.101.105]

TASK [pi : Wait for Raspberry PI to come back] **
ok: [192.168.101.105 -> localhost]

PLAY RECAP ****
192.168.101.105 : ok=7 changed=3 unreachable=0 failed=0 skipped=0 rescued=0 ignored=0

And I’ll unplug the ethernet and try connect by ssh again

Ah, but it’s moved up to 192.168.1.106 now

nmap -sP 192.168.101.0/24 (I checked again) and now it was ‘Unknown’, but ssh pi@192.168.101.106 worked

(If you can connect to your router, eg. 192.168.0.1 for most D-Link routers, you can go to something like Status -> Wireless, to see connected devices too, and skip the nmap stuff.)

I log in, then to configure some stuff:

sudo raspi-config

Under the interfaces peripheral section, Enable the camera and I2C

sudo apt-get install python-smbus
sudo apt-get install i2c-tools

ok tested with

raspistill -o out.jpg

Then copied across from my computer with

scp pi@192.168.101.106:/home/pi/out.jpg out.jpg

and then make it smaller (because trying to upload the 4MB version no)

convert out.jpg -resize 800×600 new.jpg

Cool and it looks like we also need to expand the partition

sudo raspi-config again, (Advanced Options, and first option)

---

Upon configuring the latest pi, I needed to first use the ethernet cable,

and then once logged in, use

sudo rfkill unblock 0

to turn on the wifi. The SSID and wifi password could be configured in raspi-config.

---

At Bitwäsherei, the ethernet cable to the router trick didn’t work.

Instead, as per the resident Gandalf’s advice, the instructions here

https://raspberrypi.stackexchange.com/questions/10251/prepare-sd-card-for-wifi-on-headless-pi

worked for setting up wireless access on the sd card.

“Since May 2016, Raspbian has been able to copy wifi details from /boot/wpa_supplicant.conf into /etc/wpa_supplicant/wpa_supplicant.conf to automatically configure wireless network access”

The file contains

ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
update_config=1
country=«your_ISO-3166-1_two-letter_country_code»

network={
    ssid="«your_SSID»"
    psk="«your_PSK»"
    key_mgmt=WPA-PSK
}

Save, and put sd card in RPi. Wireless working and can ssh in again!

2022 News flash:

Incredibly, some more issues.

New issue, user guide not updated yet

https://stackoverflow.com/questions/71804429/raspberry-pi-ssh-access-denied

In essence, the default pi user no longer exists, so you have to create it and set its password using either the official Imager tool or by creating a userconf file in the boot partition of your microSD card, which should contain a single line of text: username:hashed-password

Default pi and raspberry: 

pi:$6$/4.VdYgDm7RJ0qM1$FwXCeQgDKkqrOU3RIRuDSKpauAbBvP11msq9X58c8Que2l1Dwq3vdJMgiZlQSbEXGaY5esVHGBNbCxKLVNqZW1