Conky customization

[D.Sync]

I'm currently using Acer Aspire 5920G model and I would like to display some of the features below using Conky. I already installed both lm-sensors and hddtemp via the repository.

-> Display CPU voltage
-> Display Fan Speed (in RPM)
-> Display both CPU temp

So far I only managed to display both ACPI and HDD temp.