Possible for complete DIY with minimal parts ?!

[gilmod714]

Hello,,
My SID just died on me .. I found your great project here -- Excellent work!

have a question though:

is it possible to build the interface board from scratch using just 2x 74HC245 IC's (or other similar types) for level shifting and wired directly to pi pico pins/ SID socket ?! -- I understand level shifters are required for 5v-> 3.3v TTL signal conversions

I couldn't find any helpful schematic for the interface board ..

I don't need any fancy features , just a drop in SID replacement to get my sound working again -- from the parts I already have .. and I can't order from PCBway the interface boards (I live in remote location and overseas)

Thank you!
Gilmo

[frntc]

Hi, the 245-bus transceivers require a direction-signal (which is then controlling all 8 lines) -- the firmware is not designed to do this (and you'd need a LVC245!). That's why I use the CBTD3861. There might be sellers shipping to your place, have you asked them?

[gilmod714]

Oh ok .. I live in Jordan , and between the customs and shipping-companies it gets difficult and expensive to order pcbway. It would be nice if there are local-sellers for your board - instead of building it.

Would a TXS0108E work?! .. x2 .. i guess for 13 channels ..

I am only stuck to the components I can find locally .. perhaps I can find the CBDT3861 , but just in case, are there substitutes also ?! .. and I still would need a schematic so i can put the final board together ..

Thank you frntc :)
Gilmo