uP Boards that uses I2C SSD1306 for OLED Display faceplate

uProcessor board in eurorack units with an SSD1306 OLED display, two rotary dials/pots, two audio inputs, two cv inputs and two outputs. Must match the Faceplate - KicadJE_OLED_Face.

Adjustment:
2 x Encoder

CV Input:
2 x ADC AC/DC couple with optional level adj to match 0-5V ADC

Gate or Input Audio:
2 x ADC AC/DC couple with optional level adj to match 0-5V ADC

Output CV:
2 x PWM output through 3 pole active LP
+-10v

Programming Interface:
ISP
Serial

#Software