2 layers97.2 × 59.1 mm
ArmLEDsPrototype
hackclub/OnBoard
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35 parts915
2 layers25.8 × 53 mm
LS1C203Core
RigoLigoRLC/LS1C203Core2Loongson LS1C203 Microcontroller Core Board in Bluepill form factor
- Size
- 25.8 × 53 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 35
- Nets
- 45
- Pads
- 162
- Tracks, vias
- 403, 42
- Pours
- 12
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 28 Mar 2026
- Updated
- 28 Mar 2026
Overview
LS1C203Core is an open-source printed circuit board by RigoLigoRLC, from the RigoLigoRLC/LS1C203Core repository on GitHub. It is a 2-layer board of 25.8 × 53 mm with 35 parts on 45 nets, routed with 403 tracks and 42 vias.
It is built around the SGM2210-3.3. Its parts include 11 capacitors, 7 resistors, 7 connectors, 2 ICs and 2 crystals.
Main components
1Parts
35| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 10K | Resistor_SMD:R_0402_1005Metric | R4, R5, R6, R7 |
| 4 | 12pF | Capacitor_SMD:C_0402_1005Metric | C9, C10, C11, C12 |
| 4 | SolderJumper_2_Open | Resistor_SMD:R_0603_1608Metric | JP1, JP2, JP3, JP4 |
| 3 | 100nF | Capacitor_SMD:C_0402_1005Metric | C2, C4, C8 |
| 3 | 5K1 | Resistor_SMD:R_0402_1005Metric | R1, R2, R3 |
| 2 | 1uF | Capacitor_SMD:C_0402_1005Metric | C6, C7 |
| 2 | 2.2uF | Capacitor_SMD:C_0402_1005Metric | C1, C3 |
| 2 | Conn_01x18_Pin | Connector_PinHeader_2.54mm:PinHeader_1x20_P2.54mm_Vertical | J5, J6 |
| 1 | 32.768kHz | Crystal:Crystal_SMD_3215-2Pin_3.2x1.5mm | Y2 |
| 1 | 8MHz 3225 | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | BOOT Selector | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J3 |
| 1 | DOTEST Selector | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J4 |
| 1 | JTAG Mode Selector | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J7 |
| 1 | LED | LED_SMD:LED_0603_1608Metric | D1 |
| 1 | LS1C203 | Package_DFN_QFN:QFN-32-1EP_4x4mm_P0.4mm_EP2.65x2.65mm | U1 |
| 1 | Loongson EJTAG | Rigo_Connectors:IDC-TH_8P-P1.27_IDC8-1.27_SWD_I | J2 |
| 1 | SGM2210-3.3 | Package_TO_SOT_SMD:SOT-23-5 | U2 |
| 1 | SW_Push | Button_Switch_SMD:SW_SPST_B3U-1000P | SW1 |
| 1 | USB_C_Receptacle_PowerOnly_6P | Connector_USB:USB_C_Receptacle_GCT_USB4125-xx-x_6P_TopMnt_Horizontal | J1 |
Questions
How big is the LS1C203Core PCB?
It measures 25.8 × 53 mm and has 2 copper layers, 1.6 mm thick.
What parts does the LS1C203Core use?
35 parts, built around the SGM2210-3.3. 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 LS1C203Core KiCad files?
From the RigoLigoRLC/LS1C203Core repository on GitHub, at the commit this page was made from: the board is ls1c203core.kicad_pcb and its schematic ls1c203core.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the LS1C203Core design in my own project?
Its repository states no licence, so its author keeps all rights: ask RigoLigoRLC before reusing the design.
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