Just a quick post to let you know that you’ll need a new wiringPi for the Raspberry Pi 4B. To upgrade: cd /tmp wget https://project-downloads.drogon.net/wiringpi-latest.deb sudo dpkg -i wiringpi-latest.deb Check with: gpio -v and make sure it’s version 2.52. I’ll … Continue reading wiringPi updated to 2.52 for the Raspberry Pi 4B