Hi @PeteTheGreek, welcome.
There’s a thread called “succes case” where you will find how people have adapted Zynthian hardware principle to their own use case and own hardware.
If you purchase zynthian’s case, you will have to modify it so that your DAC fits in it.
In a full diy way, building a nice enclosure is the hardest part imho !!
You Can go without encoders but a 5 or 7 inch touch screen is mandatory (the waveshare one’s are well supported). You will have also a better experience with the wonderfull stepsequencer.
Latest official zynscreen + encoders kit is a good option if you want encoders and do not own a display yet.
latest zynaptic module will give you all midi interfaces + the ability to add more hardware controls. While the older one will give you all midi interfaces + encoders interfaces.
I installed Zynthian and used the web config tool to enable HDMI display and to specify my sound card. I created my first Snapshot and have that loading by default.
I’m using a Roland A-800PRO controller and was able to configure it to send the appropriate midi CC commands to control the drawbars, percusssion, vibrato, etc. in setBfree. I saved those settings to the Roland (as control set #1) and configured the Roland to load control set #1 by default.
Voila, I now have a B3 organ (single manual). I don’t need a display or encoders (yet).