Riscv challenge
FrankBuss·riscv-challenge·midi-in-module/midi-in-module.kicad_pcb
About the Riscv challenge PCB
Riscv challenge is an open source PCB design by FrankBuss, published on GitHub under the BSD-2-Clause license. It is a 2-layer board measuring 25.4 × 25.4 mm, with 10 components from 7 distinct parts.
Other key parts include the H11L1SM. By type, the board carries 4 resistors, 3 connectors, 1 IC, 1 diode and 1 capacitor.
It belongs with the audio and dev boards & breakouts designs in this gallery.
From the project
MIDI synthesizer for the RISC-V Design Challenge
This is the MIDI synthesizer project for the RISC-V Design Challenge. I'm using this board for it.
The board is configured to receive the MIDI data with an opto-isolator with the standard MIDI frequency of 31,250 Hz. The firmware then detects note-on and note-off events and generates a PWM signal with the requested pitch.
Soldering the MIDI-in board and testing the project:

Main components on the Riscv challenge
Riscv challenge bill of materials (BOM)
10 components, 7 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | H11L1SM H11L1 | DIP-6_W8.89mm_SMDSocket_LongPads | U1 |
| 1 | CP-3150 DIN-5-GND | DIN_CUI_SD-50BV | J1 |
| 2 | Z12462 Conn_01x10_Male | PinHeader_1x10_P2.54mm_Vertical | J2, J3 |
| 1 | 3191-BAV99 BAV99 | SOT-23 | D1 |
| 1 | 478-1395-1 100n | C_0805_2012Metric | C1 |
| 3 | 311-220ER 220 | R_1206_3216Metric | R1, R3, R4 |
| 1 | 311-2.20KLR 2.2k | R_0805_2012Metric | R2 |
Riscv challenge design files
The KiCad project lives in the FrankBuss/riscv-challenge repository on GitHub; these links point at the commit this page was built from.
Riscv challenge: common questions
How big is the Riscv challenge PCB?
The Riscv challenge measures 25.4 × 25.4 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Riscv challenge?
10 components, from 7 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the Riscv challenge design files?
From the FrankBuss/riscv-challenge repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the Riscv challenge design in my own project?
Yes, under the terms of its BSD-2-Clause license, which FrankBuss chose for the repository.
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