Wednesday, 9 April 2025

2025-Car4

 from the previous version I have copied some bits off to reuse. 

Basically to do with starting the subscriber. 

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Fing shows RPi at 192.168.1.26

Had to change keygen, but then able to login via ssh.

sudo raspi-config to expand filessystem, and reboot.


https://raspberrytips.com/access-point-setup-raspberry-pi/ 


**sudo apt update, 

**sudo apt-get install firmware-zd1211.

**and nmtui to configure Ethernet IP and Wifi 

Ethernet   192.168.1.9/ 24    GW=192.168.1.31 ??? 

** Wifi  rc-car Ashmeads  Access Point 192.168.4.1/32  GW 192.168.4.255


Some of teh commands I will need after re-initialising

/home/peterm/mqtt/subscriber.py

added in sudo nano /lib/systemd/system/subscriber.service


sudo apt-get install python3-pip


apt install python3-paho-mqtt


Rebooted, and systemctl status for mosquitto and Subscriber.service showed both running. 


sudo systemctl enable mosquitto   started Mosquitto. 


Tried to connect via WiFi with controller, Eventually it said "Attempting MQTT' 

but nothing happened. 


How do I tell if AP mode is done and DHCP is set? 


https://raspberrytips.com/access-point-setup-raspberry-pi/    This looks pretty good. I shall run through it as If I hadn't already tried. 


Set country GB


sudo nmcli con add con-name hotspot ifname wlan0 type wifi ssid "rc-car"


sudo nmcli con modify hotspot wifi-sec.key-mgmt wpa-psk

sudo nmcli con modify hotspot wifi-sec.psk "Ashmeads"


sudo nmcli con modify hotspot 802-11-wireless.mode ap 802-11-wireless.band bg ipv4.method shared

Looks like it is nearly there,  journalctl | grep wifi