One question, why do I need a DPDT switch to change the inversion when using a 74HC04 ic?, Why would not a SPST switch do the job?
I used a DPDT switch because I used the inverter made by Justin Thursday featured on Kitsch's site.
If you wanted to use a SPST switch then your going to need a 74HC86. More info on the 74HC86 here: http://blog.gg8.se/wordpress/2009/11/23
d-palette/
Do you have a link or something I can use as a reference in order to understand how to connect the DPDT switch to the 74HC04 ic, basically I need to know how the connection goes?
I don't have any solid info on DPDT + 74HC04. I pretty sure its possible in theory, I'm no switch expert tough so I'd either recommend looking into the 74HC86 or purchasing the switchable inverter board: http://store.kitsch-bent.com/product/hex-switch-v1