This is the main MIDIbox Core PCB: a carrier board for the Waveshare Core407v MCU.

This board offers a SD card socket, a reset button and a handful of state indication LEDs. It is required to store user data on removable flash media.

Provides 4 MIDI INs and 4 MIDI OUTs. Can accomodate a BLM port instead of MIDI IN/OUT 4.

Combines four classic MIDIbox I2C modules on a single board for four MIDI outs. Requires four PIC16F88 with I2C firmware.

A slightly more compact version of the MBHP Line Driver Transmitter.

A slightly more compact version of the MBHP Line Driver Receiver.

Version of the line driver receiver suitable for Eurorack mounting. Selectable +5V source from USB, on-board regulator, through the DB-25 cable, or the Eurorack power buss.

Front panel PCB with 3.5mm sockets and LED indicators. Works with both digital and analog expanders.

Interfaces a 74HC595 shift register to modular using op amp buffers. Chain multiple boards for more "digital" signals like gates, clocks and triggers.

The main board for the analog expander. Processes and scales incoming CV from the DAC and distributes it to the panel PCB.

Quality DAC PCB for the analog expander using MAX5500 SSOPs and separate voltage references.