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.

Stabilizes the Matias switches and also carries eight encoders with switch functions connected to the lemec board below. Two PCBs required per SEQ v4+.

Left-hand v4+ user interface board with illuminated Matias and Apem (MEC) switches. SRIO DIN for button matrix and encoder scanning.

Right-hand v4+ user interface board with illuminated Matias and Apem (MEC) switches, plus Beat LED. SRIO DIN for button matrix and encoder scanning, extra registers for activity matrix.

Jog/Activity Indicator board carrying the data jog wheel encoder, the new v4+ mode selector, additional MEC switches and two 8x8 mini LED activity matrices.

Spaces LeMEC and Plate PCBs for Matias switch installation. Contains 18x 5mm standoffs, 36x M3 nuts, suffices for a full SEQ v4+ (two LeMEC/Plate sandwiches).