2 layers243.9 × 136.5 mm
Barobord
sadekbaroudi/barobord
I have spent a lot of time and money designing prototypes, testing, developing, etc. Any contributions would be greatly appreciated!
157 parts57
2 layers314.3 × 83.3 mm
SPM1800
melonbred/SPM18003South Paw Mini 1800 Keyboard
- Size
- 314.3 × 83.3 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 143
- Nets
- 101
- Pads
- 672
- Tracks, vias
- 715, 35
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 1 Nov 2020
- Updated
- 5 Feb 2022
Overview
SPM1800 is an open-source printed circuit board by melonbred, from the melonbred/SPM1800 repository on GitHub, published under the MIT licence. It is a 2-layer board of 314.3 × 83.3 mm with 143 parts on 101 nets, routed with 715 tracks and 35 vias.
It is built around the ATMEGA32U4-AU and PRTR5V0U2X. Its parts include 59 diodes, 8 capacitors, 6 resistors, 3 connectors and 1 IC. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
2
ATMEGA32U4-AU
QFP-44(10x10)-40℃~+85℃ 10bit 16MHz 1KB 2.5KB 2.7V~5.5V 26 32KB 8 Bit AVR Built-in FLASH QFP-44(10x10) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
PRTR5V0U2X
SOT-143-55℃~+125℃ 0.3pF、0.8pF 100W 10V、15V 5V 6.5V 6A 80nA ESD IEC 61000-4-2、IEC 61000-4-5、IEC 61000-4-4 Three channels Unidirectional SOT-143 ESD and Surge Protection (TVS/ESD) ROHSTECH PUBLICESD And Surge Protection (TVS/ESD)
README
README.mdSPM1800
This is a PCB for a southpaw mini 1800 layout keyboard with the following features:
- Big bar and split bar support
- MX or Alps style switches
- Two independent rotary encoders
- USB Type-C
- Breakout pins for RGB underglow
- Breakout pin for USB shield ground
WARNING
This PCB has been tested for functionality. However, please review the project files prior to placing an order for manufacturing. Users should be warned that they are manufacturing this at their own risk.
Layout
PCB
BOM
| Designator | Description | Package | QTY | LCSC Part Number |
|---|---|---|---|---|
| C1, C2, C3, C4 | Capacitor - 0.1uF | 0805 | 4 | C28233 |
| C5 | Capacitor - 10uF | 0805 | 1 | C15850 |
| C6, C7 | Capacitor - 22pF | 0805 | 2 | C1804 |
| C8 | Capacitor - 1uF | 0805 | 1 | C28323 |
| D1 - D58 | Diode - 1N4148 | SOD-123 | 58 | C466653 |
| D59 | ESD Protection Diode - PRTR5V0U2X | SOD-143B | 1 | C12333 |
| F1 | Fuse 24V - 500mA | 1206 | 1 | C70076 |
| R1, R2 | Resistor - 10k | 0805 | 2 | C17414 |
| R3, R4 | Resistor - 5.1k | 0805 | 2 | C27834 |
| R5, R6 | Resistor - 22 | 0805 | 2 | C17561 |
| U1 | Atmega32u4 | QFP-44_10x10mm_P0.8mm | 1 | C44854 |
| USB1 | HRO-TYPE-C-31-M-12 | HRO-TYPE-C-31-M-12 | 1 | C165948 |
| Y1 | Crystal 16Mhz 3.2x2.5mm, 4 pad | 3225 | 1 | C156247 |
QMK Firmware
Firmware has been written but not tested at this time. QMK files can be found here.
Additional Notes
This project uses KiCAD libraries maintained by ai03:
Parts
143| Qty | Value | Footprint | References |
|---|---|---|---|
| 58 | 1N4148 | Diode_SMD:D_SOD-123 | D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +42 |
| 48 | SW_Push | MX_Alps_Hybrid:MX-1U-NoLED | MX1, MX2, MX10, MX11, MX12, MX13, MX14, MX15, MX16, MX17, MX18, MX19, MX20, MX22, MX23, MX24 +32 |
| 6 | SW_Push | MX_Alps_Hybrid:MX-1.25U-NoLED | MX21, MX46, MX52, MX53, MX56, MX58 |
| 4 | 0.1uF | Capacitor_SMD:C_0805_2012Metric | C1, C2, C3, C4 |
| 2 | 10k | Resistor_SMD:R_0805_2012Metric | R1, R2 |
| 2 | 22 | Resistor_SMD:R_0805_2012Metric | R5, R6 |
| 2 | 22pF | Capacitor_SMD:C_0805_2012Metric | C6, C7 |
| 2 | 5.1k | Resistor_SMD:R_0805_2012Metric | R3, R4 |
| 2 | Rotary_Encoder_Switch | Rotary_Encoder:RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm | EC1, EC2 |
| 2 | SW_Push | MX_Alps_Hybrid:MX-1.75U-NoLED | MX31, MX36 |
| 1 | 10uF | Capacitor_SMD:C_0805_2012Metric | C5 |
| 1 | 1uF | Capacitor_SMD:C_0805_2012Metric | C8 |
| 1 | ATmega32U4-AU | Package_QFP:TQFP-44_10x10mm_P0.8mm | U1 |
| 1 | Conn_01x01 | Connector_PinHeader_2.54mm:PinHeader_1x01_P2.54mm_Vertical | J3 |
| 1 | Conn_01x02 | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J1 |
| 1 | Conn_01x03 | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J2 |
| 1 | Crystal_GND24_Small | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | HRO-TYPE-C-31-M-12 | Type-C:HRO-TYPE-C-31-M-12-HandSoldering | USB1 |
| 1 | LOGO | silk:turtle_pan_cu_small | G*** |
| 1 | PRTR5V0U2X | random-keyboard-parts:SOT143B | D59 |
| 1 | Polyfuse_Small | Fuse:Fuse_1206_3216Metric | F1 |
| 1 | SW_Push | MX_Alps_Hybrid:MX-6.25U-ReversedStabilizers-NoLED | MX60 |
| 1 | SW_Push | MX_Alps_Hybrid:MX-2.25U-ReversedStabilizers-NoLED | MX54 |
| 1 | SW_Push | MX_Alps_Hybrid:MX-2.75U-ReversedStabilizers-NoLED | MX55 |
| 1 | SW_Push | MX_Alps_Hybrid:MX-2U-ReversedStabilizers-NoLED | MX59 |
Questions
How big is the SPM1800 PCB?
It measures 314.3 × 83.3 mm and has 2 copper layers, 1.6 mm thick.
What parts does the SPM1800 use?
143 parts, built around the ATMEGA32U4-AU and PRTR5V0U2X. 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 SPM1800 KiCad files?
From the melonbred/SPM1800 repository on GitHub, at the commit this page was made from: the board is SPM1800.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the SPM1800 design in my own project?
Its repository publishes it under the MIT 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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