Tag Archives: rpi

Basic rPi PADD on touchscreen install.

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Install Pi-hole Ad Detection Display on your rPi.

  1. Get your touchscreen display working.
  2. Open raspi-config and set Boot Options -> DeskTop / CLI to Console Autologin.
  3. Download PADD and make executable:
    cd ~
    wget -N https://raw.githubusercontent.com/jpmck/PADD/master/padd.sh
    sudo chmod +x padd.sh
  4. Start PADD with ./padd.sh
  5. Exit with CTRL-C

Links:

learn.adafruit.com github.com/jpmck/PADD

3,5 inch touchscreen on rPi.

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Follow these steps to use a 3.5 inch touchscreen on your rPi.

  1. Update your system with sudo apt-get update && sudo apt-get upgrade
  2. Start raspi-config and go to Interfacing Options and enable the SPI interface.
  3. Download LCD-show van Github:
    cd ~
    sudo rm -rf LCD-show
    git clone https://github.com/goodtft/LCD-show.git
    chmod -R 755 LCD-show
  4. Enter the folder you just cloned with cd LCD-show
    Now all you have to do is start the script for your LCD type.
    For a 3.5″ display you run sudo ./LCD35-show
    The system will install/setup the LCD and reboot with the LCD as display.

To switch back to HDMI:

To use the HDMI port again, go to the LCD-show folder and run
sudo ./LCD-hdmi to switch back to HDMI.

Links

raspberrytips.nl circuitdigest.com github.com/goodtft/LCD-show

Fix (delete) secondary dhcp address when setting static ip address.

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After setting a static ip address in a debian based os, there is often a secondary ip address visible with ip addr show.
This is caused by the dhcpcd service which keeps running after setting a static ip.
Stopping this service will remove the secondary ip address after a reboot or network restart.

update-rc.d dhcpcd disable
service dhcpcd stop
#and optionally the next line or a reboot
ip addr del %YOURS-SECOND-IP% dev ethX

Replace %YOURS-SECOND-IP% with the unwanted secondary ip address.
And replace ethx with the interface name.
Restart the network.
Or just reboot and the secondary ip will be gone.

Works on a Volumio based Raspberry Pi and Ubuntu Server 18.04.2 LTS.