Ah, that’s probably the issue!
You should probably change to “def adc_to_voltage(reading, ref_voltage=3.3):” and update the docstring accordingly.
That code should read every channel once every second and print to the terminal. Note that the value returned will also now be 0-1023. You’ll need to enable the overlay to use it. To do so you can download the wiring tool from my github (git clone or download the zip, whichever way is easiest for you). Open the directory “libretech-wiring-tool” in terminal and run “make” to compile. From within that same directory run “sudo ./ldto enable spicc spicc-mcp3008”.(If you don’t run it this way you’ll get the installed version, not the one you just maked[sic])
angus@aml-s905x-cc:~$ cd Projects/libretech-wiring-tool/
angus@aml-s905x-cc:~/Projects/libretech-wiring-tool$ make # you'll get more output from make
make: Nothing to be done for 'all'.
angus@aml-s905x-cc:~/Projects/libretech-wiring-tool$ sudo ./ldto enable spicc spicc-mcp3008
[sudo] password for angus:
Overlay spicc: applied
Overlay spicc-mcp3008: applied
Here’s my fork of the repo with the new overlay:
I’d also skim this:
You can just run “cat /sys/bus/iio/devices/iio:device1/in_voltage0_raw”" in terminal to read it with the overlay applied. it just show up as a file now. You can check it out using the file manager.