Simple micro module comprising a passive 'R2R' DAC, with raw, buffered and inverted outputs. Inspired by an element of Matt Keubrich’s Roundabout see here. The 2x4 also takes inspiration from this source.

Controls

None

Connectivity

Inputs

• 1-8 — binary-weighted inputs to the resistor-ladder.

Note The inputs don't have to be digital! µr2r can operate as a weighted voltage mixer too; have an experiment!

Outputs

• u unbuffered sum of the output from the resistor ladder. Connecting multiple modules to this pin will change the generated voltage due to the effect of different input impedances;
• b (x2) buffered version of u, capable of driving multiple following modules;
• i Inverted/buffered version of b

https://wonkystuff.co.uk/ur2r.html