UPS3 power off guide
Contents
Check wringPi version
If you use raspberry pi 4 model b, please update wringPi library from V2.50 to V2.52,
Please ignore it if you are use raspberry pi 3 model b;
How to update wringPi V2.5 to wringPi 2.52?
cd ~ mkdir tmp cd tmp wget https://project-downloads.drogon.net/wiringpi-latest.deb sudo dpkg -i wiringpi-latest.deb
Then run command the following command to check the wringPi library version
gpio –v
OK, the wringPi library version is updated to V2.52 now
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