mseq_pcb

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README

MSeq PCB

KiCad 10 hardware design for MSeq embedded, the microcontroller implementation of the MSeq MIDI sequencer.

Main specs

MCU: STM32F413CHU6 (Arm Cortex-M4F, 100 MHz), 25 MHz HSE and 32.768 kHz LSE crystals
MIDI: 2 × IN (H11L1M opto-isolated), 1 × OUT and 1 × THRU (74HCT125 buffered), 5-pin DIN sockets
USB-C: USB-to-UART bridge (CP2102N) with ESD protection, also powers the board
Storage: 16 Mbit SPI NOR flash (W25Q16JV) and 256 kbit SPI FRAM (MB85RS256B)
Power: 5 V from USB, AMS1117-3.3 regulator, ON/OFF switch
Controls: MASTER/SLAVE sync switch, RESET and BOOT buttons
Headers: 10-pin SWD/JTAG (1.27 mm), 4-pin I2C header for a display
LEDs: power, MIDI activity, USB TX/RX
Board: 2 layers, 135.3 × 78.4 mm, 1.6 mm FR-4, all parts on the top side, made for JLCPCB assembly

mseq_pcb_tb — test bench for the MSeq PCB
mseq_embedded — microcontroller implementation of MSeq
mseq — lightweight MIDI sequencer framework written in Rust

License

This hardware design is licensed under the CERN Open Hardware Licence Version 2 – Strongly Reciprocal (SPDX-License-Identifier: CERN-OHL-S-2.0). See LICENSE for the full text.

Source location: https://github.com/MF-Room/mseq_pcb

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MSeq PCB

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