Refer the following web sites to install Erlang to Raspberry Pi, and to control GPIO rewrote the python code to retrieve an analogue value from AD converter using SPI communication on section 6 of ...
Install packages i2c-tools and libi2c-dev to be able to use the I2C bus functionality Make sure I2C is not blacklisted in /etc/modprobe.d/raspi-blacklist.conf ...
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