4 layers63.4 × 78.3 mm
4 layers63.5 × 25.4 mm
COMET
K-Eckert15/ARES1ARES capstone with PHOBOS and DEIMOS subsystems
- Size
- 63.5 × 25.4 mm
- Copper layers
- 4
- Thickness
- 1.56 mm
- Parts
- 73
- Nets
- 85
- Pads
- 274
- Tracks, vias
- 508, 89
- Pours
- 5
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 25 Jul 2026
- Updated
- 5 Nov 2026
Overview
COMET is an open-source printed circuit board by K-Eckert15, from the K-Eckert15/ARES repository on GitHub. It is a 4-layer board of 63.5 × 25.4 mm with 73 parts on 85 nets, routed with 508 tracks and 89 vias.
It is built around the RP2040, MPL3115A2R1 and W25Q128JVSIQ, with the LSM6DS3, ABM8-272-T3 and BSD840N-VB among its other parts. Its parts include 25 resistors, 20 capacitors, 8 diodes, 5 ICs and 3 transistors. It belongs with the RP2040 boards of this library.
Main components
7
RP2040
LQFN-56(7x7)12bit 133MHz 30 LQFN-56(7x7) Microcontrollers (MCU/MPU/SOC) ROHSRaspberry PiMicrocontrollers (MCU/MPU/SOC)
MPL3115A2R1
LGA-8(3x5)-40℃~+85℃ 0.05Kpa 0.4Kpa 1.95V~3.6V 1s 2uA 50Kpa~1.1bar I2C LGA-8(3x5) Pressure Sensors ROHSNXP SemiconductorsPressure 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
LSM6DS3
LGA-14(2.5x3)-40℃~+85℃ 1.71V~3.6V 8KB Accelerometer Gyroscope SPI、I2C X,Y,Z X,Y,Z ±16g ±2000dps LGA-14(2.5x3) Accelerometers ROHSSTMicroelectronicsAccelerometers
ABM8-272-T3
SMD3225-4P-40℃~+85℃ 10pF 12MHz 50Ω SMD crystal oscillator ±30ppm ±30ppm SMD3225-4P Crystals ROHSAbraconCrystals
BSD840N-VB
SC-70-6MOSFETsVBsemi Elec
KMR211GLFS
SMD-40℃~+85℃ 1.2N 2.6mm 200,000 Cycles 32V 4.2mm 50mA Gull Wing No Round Button SPST-NO Surface Mount,Vertical Without Bracket SMD Tactile Switches ROHSC&KTactile Switches
README
README.mdARES
ARES capstone with PHOBOS and DEIMOS subsystems
Parts
73| Qty | Value | Footprint | References |
|---|---|---|---|
| 12 | 100n | Capacitor_SMD:C_0402_1005Metric | C1, C2, C9, C15, C16, C17, C18, C19, C20, C21, C22, C23 |
| 6 | 1k | Resistor_SMD:R_0402_1005Metric | R7, R17, R29, R33, R34, R35 |
| 5 | LED | LED_SMD:LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D5, D9, D10, D13, D14 |
| 4 | 10k | Resistor_SMD:R_0402_1005Metric | R12, R23, R24, R31 |
| 4 | 10u | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C4, C12, C13, C14 |
| 4 | 4.7k | Resistor_SMD:R_0402_1005Metric | R18, R25, R26, R30 |
| 3 | 470 | Resistor_SMD:R_0402_1005Metric | R9, R14, R22 |
| 2 | 15p | Capacitor_SMD:C_0402_1005Metric | C10, C11 |
| 2 | 1u | Capacitor_SMD:C_0402_1005Metric | C24, C25 |
| 2 | 220 | Resistor_SMD:R_0402_1005Metric | R16, R28 |
| 2 | 27 | Resistor_SMD:R_0402_1005Metric | R19, R21 |
| 2 | 5.1k | Resistor_SMD:R_0402_1005Metric | R10, R11 |
| 2 | D | Diode_SMD:D_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D1, D4 |
| 2 | MountingHole | MountingHole:MountingHole_3.2mm_M3 | H1, H2 |
| 2 | SISS67DN-T1-GE3 | Package_SO:Vishay_PowerPAK_1212-8_Single | Q1, Q3 |
| 1 | 100k | Resistor_SMD:R_0402_1005Metric | R37 |
| 1 | 330k | Resistor_SMD:R_0402_1005Metric | R36 |
| 1 | ABM8-272-T3 | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | BSD840N | Package_TO_SOT_SMD:SOT-363_SC-70-6 | Q2 |
| 1 | Boot | TestPoint:TestPoint_Pad_D1.0mm | TP1 |
| 1 | GND | TestPoint:TestPoint_Pad_D1.0mm | TP2 |
| 1 | KMR211GLFS | External/Custom Parts:KMR2xxG_CNK | SW3 |
| 1 | LED_BGAR | RGB_LED:QBLP600L | D15 |
| 1 | LSM6DS3 | Package_LGA:LGA-14_3x2.5mm_P0.5mm_LayoutBorder3x4y | U2 |
| 1 | M/D | TerminalBlock_4Ucon:TerminalBlock_4Ucon_1x04_P3.50mm_Horizontal | J2 |
| 1 | MPL3115A2 | Package_LGA:NXP_LGA-8_3x5mm_P1.25mm_H1.1mm | U1 |
| 1 | NCP1117-3.3_SOT223 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U4 |
| 1 | Power/Arm | TerminalBlock_4Ucon:TerminalBlock_4Ucon_1x04_P3.50mm_Horizontal | J5 |
| 1 | RP2040 | Package_DFN_QFN:QFN-56-1EP_7x7mm_P0.4mm_EP3.2x3.2mm | U5 |
| 1 | RX | TestPoint:TestPoint_THTPad_D2.0mm_Drill1.0mm | TP4 |
| 1 | Speaker | OWMB-404020SA-40-17:OWMB-404020SA-40-17 | LS1 |
| 1 | TX | TestPoint:TestPoint_THTPad_D2.0mm_Drill1.0mm | TP3 |
| 1 | USB4056-03-A_REVA2 | USB4056-03-A:GCT_USB4056-03-A_REVA2 | J6 |
| 1 | W25Q128JVSIQ | Package_SO:SOIC-8_5.3x5.3mm_P1.27mm | U3 |
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Questions
How big is the COMET PCB?
It measures 63.5 × 25.4 mm and has 4 copper layers, 1.56 mm thick.
What parts does the COMET use?
73 parts, built around the RP2040, MPL3115A2R1, W25Q128JVSIQ and LSM6DS3. 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 COMET KiCad files?
From the K-Eckert15/ARES repository on GitHub, at the commit this page was made from: the board is PHOBOS/COMET/COMET.kicad_pcb and its schematic DEIMOS/INSIGHT/INSIGHT (conflicted copy 2026-09-14 235045).kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the COMET design in my own project?
Its repository states no licence, so its author keeps all rights: ask K-Eckert15 before reusing the design.