4 layers50.8 × 87 mm
4 layers54.2 × 71.8 mm
Main1
rice-eclipse/AFSElecECLIPSE: AFS
- Size
- 54.2 × 71.8 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 77
- Nets
- 115
- Pads
- 352
- Tracks, vias
- 71, 2
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 21 Jan 2026
- Updated
- 7 Nov 2026
Overview
Main1 is an open-source printed circuit board by rice-eclipse, from the rice-eclipse/AFSElec repository on GitHub. It is a 4-layer board of 54.2 × 71.8 mm with 77 parts on 115 nets, routed with 71 tracks and 2 vias.
It is built around the MCS1802GS-50-Z, LM2575-3.3BT and MMC5983MA, with the MS5611-01BA03, W25Q128JVSIQ and AMS1117-3.3 among its other parts. Its parts include 34 capacitors, 14 ICs, 12 resistors, 5 connectors and 3 diodes. It belongs with the RP2350 boards of this library.
Main components
9
MCS1802GS-50-Z
SOIC-8Current SensorsMonolithic Power Systems
LM2575-3.3BT
TO-220-5-40℃~+125℃@(TJ) 1 1A 3.3V 4V~40V 52kHz 5mA Buck Built-in Fixed No Overcurrent Protection、Cycle-by-cycle current limiting Step-down type TO-220-5 DC-DC ConvertersMicrochip TechnologyDC-DC Converters
MMC5983MA
LGA-16(3x3)-40℃~+105℃ 18bit 2.8V~3.6V 450uA I2C、SPI ±8Gs ±8Gs LGA-16(3x3) 3D Magnetic Sensors ROHSMEMSIC3D Magnetic Sensors
MS5611-01BA03
QFN-8(3x5)QFN-8(3x5) Pressure Sensors ROHSMEASPressure Sensors
W25Q128JVSIQ
SOIC-8-208mil-40℃~+85℃ 100,000 cycles 120ms@(32KB) 128Mbit 133MHz 1uA 2.7V~3.6V 20 Years 3ms Power-on reset、Hardware write protection、Software write protection、Write enable latch、Absolute write protection SPI SOIC-8-208mil NOR FLASH ROHSWinbondNOR FLASH
AMS1117-3.3
SOT-223-40℃~+125℃ 0.003%Vout 1 1.1V@(800mA) 15V 1A 3.3V 5mA 72dB@(120Hz) Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSAdvanced Monolithic SystemsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
ICM-42688-P
LGA-14(2.5x3)-40℃~+85℃ 1.71V~3.6V 16bit 2KB 7.5uA IMU (accelerometer + gyroscope) SPI、I2C X,Y,Z X,Y,Z ±16g ±2000dps Motion Event Detection, Synchronization, Timestamp Support LGA-14(2.5x3) Accelerometers ROHSTDK InvenSenseAccelerometers
KX134-1211
LGA-12(2x2)16bit Accelerometer I2C X,Y,Z ±8g 运动事件检测 LGA-12(2x2) Accelerometers ROHSROHM SemiconductorAccelerometers
ABM8-272-T3
SMD3225-4P-40℃~+85℃ 10pF 12MHz 50Ω SMD crystal oscillator ±30ppm ±30ppm SMD3225-4P Crystals ROHSAbraconCrystals
README
README.mdThis is the official GitHub Repo for Rice ECLIPSE AFS.
Parts
77| Qty | Value | Footprint | References |
|---|---|---|---|
| 23 | 100n | Capacitor_SMD:C_0402_1005Metric | C10, C11, C12, C13, C14, C15, C19, C24, C25, C26, C27, C28, C29, C30, C31, C32 +7 |
| 4 | 10u | Capacitor_SMD:C_0805_2012Metric | C18, C20, C21, C23 |
| 4 | 4.7u | Capacitor_SMD:C_0402_1005Metric | C1, C2, C3, C4 |
| 4 | Conn_01x03 | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J3, J4, J5, J6 |
| 4 | MCS1802GS-50-Z | Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.29x3mm | U9, U11, U12, U13 |
| 4 | MountingHole | MountingHole:MountingHole_3.2mm_M3_ISO14580_Pad | H1, H2, H3, H4 |
| 3 | 1k | Resistor_SMD:R_0402_1005Metric | R4, R5, R6 |
| 3 | LED | LED_SMD:LED_0805_2012Metric | D1, D2, D3 |
| 3 | R | Resistor_SMD:R_0402_1005Metric | R10, R11, R12 |
| 2 | 15p | Capacitor_SMD:C_0402_1005Metric | C16, C17 |
| 2 | 22 | Resistor_SMD:R_0402_1005Metric | R2, R3 |
| 2 | 4.7k | Resistor_SMD:R_0402_1005Metric | R7, R8 |
| 2 | SW_Push | Button_Switch_SMD:SW_Push_SPST_NO_Alps_SKRK | SW1, SW2 |
| 1 | 1u | Capacitor_SMD:C_0805_2012Metric | C22 |
| 1 | 2m | Resistor_SMD:R_1206_3216Metric | R13 |
| 1 | 3.3uH | otherComponents:AOTA-B201610S3R3-101-T(L_0806_2016metric) | L1 |
| 1 | 33 | Resistor_SMD:R_0402_1005Metric | R1 |
| 1 | ABM8-272-T3 | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U3 |
| 1 | ICM-42688-P | Package_LGA:LGA-14_3x2.5mm_P0.5mm_LayoutBorder3x4y | U5 |
| 1 | INA226 | Package_SO:VSSOP-10_3x3mm_P0.5mm | U6 |
| 1 | KX134-1211 | Package_LGA:LGA-12_2x2mm_P0.5mm | U7 |
| 1 | LM2575-3.3BT | Package_TO_SOT_SMD:TO-263-5_TabPin3 | U14 |
| 1 | LM75B | Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.29x3mm | U10 |
| 1 | LOGO | logos:ECLIPSELogo1 | G*** |
| 1 | MMC5983MA | Package_LGA:LGA-16_3x3mm_P0.5mm | U4 |
| 1 | MS5611-01BA | Package_LGA:LGA-8_3x5mm_P1.25mm | U8 |
| 1 | RP2350A-QFN60 | Package_DFN_QFN:QFN-60-1EP_7x7mm_P0.4mm_EP3.4x3.4mm | U1 |
| 1 | USB_B_Micro | Connector_USB:USB_Micro-B_Amphenol_10118193-0001LF_Horizontal | J1 |
| 1 | W25Q128JVS | Package_SO:SOIC-8_5.3x5.3mm_P1.27mm | U2 |
Questions
How big is the Main1 PCB?
It measures 54.2 × 71.8 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Main1 use?
77 parts, built around the MCS1802GS-50-Z, LM2575-3.3BT, MMC5983MA and MS5611-01BA03. 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 Main1 KiCad files?
From the rice-eclipse/AFSElec repository on GitHub, at the commit this page was made from: the board is IndividualFolders/Brian Dai/Main1/Main.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Main1 design in my own project?
Its repository states no licence, so its author keeps all rights: ask rice-eclipse before reusing the design.
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