2 layers57 × 55.2 mm
LogicAnalyzer
gusmanb/logicanalyzer
24 channel, 100Msps logic analyzer hardware and software
10 parts5.1kGPL-3.0
2 layers20.3 × 36.2 mm
MidiBreakout
TylerK07/YM3812-Module32With each new article, the functionality of the module will grow, and the associated code and schematics will be available here.
- Size
- 20.3 × 36.2 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 10
- Nets
- 11
- Pads
- 34
- Tracks, vias
- 57, 0
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 26 Dec 2022
- Updated
- 26 May 2024
Overview
MidiBreakout is an open-source printed circuit board by TylerK07, from the TylerK07/YM3812-Module repository on GitHub. It is a 2-layer board of 20.3 × 36.2 mm with 10 parts on 11 nets, routed with 57 tracks and 0 vias.
Its parts include 4 resistors, 3 connectors, 1 IC, 1 diode and 1 switch.
README
README.mdYM3812-Module
This code repository parallels a series of articles about a YM3812 module written on thingsmadesimple.com
With each new article, the functionality of the module will grow, and the associated code and schematics will be available here.
Current Articles
YM3812 Part 1: Register Basics
Focuses on FM Synthesis basics, the YM3812's register map and electrically controlling the chip's pins.
YM3812 Part 2: FACE Reveal
Introduces a basic implementation of the YM3812 circuit controlled by an AVR128DA28 microcontroller that we will build on in future articles. Think of it as a "Hello World" starting point that ensure the circuit works and that we can upload code to the microcontroller.
YM3812 Part 3: Behind the Code
Walks through the implementation of the YM3812 class used in Part 2 and describes how each of the register manipulation functions work.
YM3812 Part 4: MIDI Journey
Adds a MIDI input to our schematic, and discusses how to translate MIDI note numbers into frequencies the YM3812 understands
YM3812 Part 5: MIDI Polyphony
Adds Polyphony to our breadboard module, walking through a couple of algorithms in the process.
YM3812 Part 6: Patches
Revise the YM3812 class implementation to support more generic instrument definition
YM3812 Part 7: Percussive Maintenance
Add General MIDI drum support by linking different drum sounds to different notes on the keyboard
YM3812 Part 8: Velocity Sensitivity
Add touch sensitivity to the module by selectively scaling the right operator levels
YM3812 Part 9: SynthCard
Turn that breadboard into a business card sized PCB!
YM3812 Part 10: Pitch Bend
Add pitch bend capabilities and shred on a YM3812
Article Backlog:
YM3812 Part ?: OPL2 in STEREO!
Add another YM3812 chip and some stereo effects for panning and detuning
YM3812 Part ?: Adding a menu to swap patches
Add a TFT Screen and a Rotary Encoder so we can adjust patch assignments to MIDI channels
YM3812 Part ?: Adjust Patch Properties
Add buttons and a menu system that lets us adjust patch settings individually
YM3812 Part ?: Visualizing 2-OP envelopes
Add a graphical visualization that helps us interpret patch settings
YM3812 Part ?: Virtual 4-OP Voices
Add support for virtual four-operator voices
and more...
Parts
10| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 220 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1, R2, R4, R5 |
| 1 | 1N4148 | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D1 |
| 1 | 6N138 | Package_DIP:DIP-8_W7.62mm_Socket_LongPads | U1 |
| 1 | Conn_01x04 | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J3 |
| 1 | MIDI IN | _OscillatorParts:PJ392_3.5MM_Vertical | J1 |
| 1 | MIDI OUT | _OscillatorParts:PJ392_3.5MM_Vertical | J2 |
| 1 | SW_DPDT_x2 | Button_Switch_THT:SW_E-Switch_EG1271_DPDT | SW1 |
Questions
How big is the MidiBreakout PCB?
It measures 20.3 × 36.2 mm and has 2 copper layers, 1.6 mm thick.
What parts does the MidiBreakout use?
10 parts. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the MidiBreakout KiCad files?
From the TylerK07/YM3812-Module repository on GitHub, at the commit this page was made from: the board is Articles 4/MidiBreakout/MidiBreakout.kicad_pcb and its schematic Articles 4/MidiBreakout/MidiBreakout.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the MidiBreakout design in my own project?
Its repository states no licence, so its author keeps all rights: ask TylerK07 before reusing the design.
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