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You have two physical WiFi interfaces available to create two access points, the built-in wlan0 and that from the USB/WiFi dongle wlan1. With systemd-networkd you can make two independent services. Then you can use routing or bridging to get connected to the internet with your home internet router. With routing you have different subnets with different ip ...


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The problem is that your script does not run with root rights. You took the commands as given in the tutorial and where needed you prepend them with sudo. This does not work with redirection > and << because redirection then is related to sudo and not to cat as intended. If you look at the tutorial you will find as very first command rpi ~$ sudo -...


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The easiest way without overthinking it too much, would be to just set up one of the RasPis as an access point that the others connect to. Make your robotic car it's own WLAN. If you prefer a wired connection, simple communication can work over a basic serial UART. If you have a lot of streamed data, SPI may be a possibility as well. Lastly, you can add ...


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You asked "can a Raspberry Pi broadcast multiple ssid through the adapter present in the stock hardware itself?". The SSID is a unique identifier for a WiFi network broadcasted by an access point. You cannot have multiple SSIDs for the same WiFi network. So I assume that you mean if you can have multiple WiFi networks (access points) from one Raspberry Pi. ...


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From the information you have given so far it seems that the RasPi has a working WiFi interface wlp2s0. As shown by ip addr it has a dynamic ip address 192.168.1.160/24 that is usually given by a DHCP server on the network. So it must be connected to a remote access point and everything is good. The command iw wlp2s0 link would give us more details about the ...


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To delete restricted files you can use rm in combination with sudo (execute with root rights). So to delete wpa_supplicant.conf you can execute on the command line: rpi ~$ sudo rm /etc/wpa_supplicant/wpa_supplicant.conf Repeat that with the names of the other files you want to delete. But you need wpa_supplicant.conf to connect to the hidden access point. ...


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You try to run Raspbian Stretch on a Raspberry Pi 4. On the release notes you will find: 2019-06-20: * Based on Debian Buster * Support for Raspberry Pi 4 hardware This means Raspbian Stretch as predecessor from Rasbian Buster does not support Raspberry Pi 4. Before continue troubleshooting please start again with Raspbian Buster. With your ...


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This is what man dhcpcd.conf tells inform [...] sends a DHCP INFORM instead of DISCOVER/REQUEST. This does not get a lease as such, just notifies the DHCP server of the address in use. You should also include the optional cidr network number[...] If you set static ip_address then dhcpcd will not attempt to obtain a lease and just use the ...


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According to Raspberry Pi Forums: RPi3 wlan0 doesn't change with predictable names: On the Pi only USB devices (like the ehternet adapter) use the predictable names The wifi adapter uses SDIO and apparently there's no mechanism for predictable names using that channel. So predictible interface names will never work with the onboard wifi device. ...


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I don't overview when and where the 4th RasPi doesn't work so I can't verify my idea about the error. But I had a similar problem that an additional device doesn't connect to the network but couldn't verify a hardware problem. The reason was simply that the pool of ip addresses from the DHCP server was used up and the new device doesn't could get an ip ...


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To elaborate the answer from @Ingo: please consider using the link ln -s /run/systemd/resolve/stub-resolv.conf resolv.conf instead of the link to /run/systemd/resolve/resolv.conf. This enable the "integrated" DNS stub and enables things like per-interface DNS server which could be important if you use VPNs that provide their own DNS server with non-public ...


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After some years there have been found a solution to this specific problem with Raspberry Pi. You very clearly described that you want to have a bridge on the RasPi but this cannot be done with a WiFi client connection to the router. For this it must supported by the WiFi chip but it doesn't. For further information about this look at Raspberry Pi WiFi to ...


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I had the same question,you can try remove /var/lib/dhcp/* , I hope it work.


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Does the Pi have to be accessed over WiFi? If not, you can SSH to it via USB OTG after enabling SSH. I believe it's IP over USB so other networked services should work and if properly configured. The Zero should have internet access through the laptop's WiFi connection. Using this method should eliminate the tedium of connecting two seperate devices to a ...


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