2 layers27.9 × 16.5 mm
2 layers36 × 28 mm
CH554USBMIDIBoard
JA1TYE/CH554USBMIDIBoard2PCB Design for CH554 USB-MIDI Host
- Size
- 36 × 28 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 18
- Nets
- 21
- Pads
- 59
- Tracks, vias
- 91, 8
- Pours
- 5
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 27 Jan 2023
- Updated
- 27 Jan 2023
Overview
CH554USBMIDIBoard is an open-source printed circuit board by JA1TYE, from the JA1TYE/CH554USBMIDIBoard repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 36 × 28 mm with 18 parts on 21 nets, routed with 91 tracks and 8 vias.
Its parts include 7 resistors, 3 connectors, 2 capacitors, 1 IC and 1 diode. It belongs with the audio and music boards and the 8051 (CH55x, STC, AT89) boards of this library.
README
README.mdCH554 USB-MIDI Host Board
This board is designed to use WCH's 8-bit MCU CH554 as a USB-MIDI Host.
Firmware for this board is available on CH554USBMIDIHost.
How to use
CH554's UART0(TX:P3.1/RX:P3.0) are used as MIDI 1.0 I/F. CH554's UART1(TX:P1.7/RX:P1.6) are used for debugging.
This board have MIDI 1.0 compatible TX circuit(some resistors to consist current loop) but circuit for RX(i.e. optoisolator) is not contained. If you use MIDI1.0 RX, you should add optoisolator and so on.
You can use USB-A port and DEBUG UART (UART1) port to write firmware to CH554. You need to power on with pressing SW1 to enter bootloader mode.
Parts
18| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 130 | Resistor_SMD:R_0805_2012Metric | R2, R3, R4, R5 |
| 2 | 0.1u | Capacitor_SMD:C_0402_1005Metric | C1, C2 |
| 1 | 10R | Resistor_SMD:R_0603_1608Metric | R6 |
| 1 | 10k | Resistor_SMD:R_0402_1005Metric | R7 |
| 1 | 1k | Resistor_SMD:R_0402_1005Metric | R1 |
| 1 | CH55xG | Package_SO:SO-16_3.9x9.9mm_P1.27mm | U1 |
| 1 | Conn_01x04_Female | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J1 |
| 1 | Conn_01x05_Female | Connector_PinHeader_2.54mm:PinHeader_1x05_P2.54mm_Vertical | J3 |
| 1 | LED | LED_SMD:LED_0603_1608Metric | D1 |
| 1 | MODE0 | Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm | JP1 |
| 1 | MODE1 | Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm | JP2 |
| 1 | Polyfuse | Fuse:Fuse_1812_4532Metric | F1 |
| 1 | SW_Push | Button_Switch_SMD:SW_Push_SPST_NO_Alps_SKRK | SW1 |
| 1 | USB_A | SuLibs:USB_A_Molex_67643_Horizontal | J2 |
Questions
How big is the CH554USBMIDIBoard PCB?
It measures 36 × 28 mm and has 2 copper layers, 1.6 mm thick.
What parts does the CH554USBMIDIBoard use?
18 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 CH554USBMIDIBoard KiCad files?
From the JA1TYE/CH554USBMIDIBoard repository on GitHub, at the commit this page was made from: the board is CH554USBMIDIBoard.kicad_pcb and its schematic CH554USBMIDIBoard.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the CH554USBMIDIBoard design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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