6 layers39.5 × 39.5 mm
4 layers70 × 35 mm
MIRA
piecol/MIRA2- Size
- 70 × 35 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 172
- Nets
- 212
- Pads
- 690
- Tracks, vias
- 1,089, 797
- Pours
- 504
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 24 Oct 2026
- Updated
- 25 Oct 2026
Overview
MIRA is an open-source printed circuit board by piecol, from the piecol/MIRA repository on GitHub, published under the CERN-OHL-S-2.0 licence. It is a 4-layer board of 70 × 35 mm with 172 parts on 212 nets, routed with 1,089 tracks and 797 vias.
It is built around the CH340E, SKY65943-11 and SHTC3, with the TPS22917DBV, ZX-GH1.25-WT4 and APHF1608LSEEQBDZGKC among its other parts. Its parts include 48 capacitors, 42 resistors, 17 ICs, 11 inductors and 9 diodes. It belongs with the nRF52 and nRF5x boards of this library.
Main components
12
CH340E
MSOP-10150uA 20mA 2Mbps 3.3V、5V Transceiver USB 2.0 MSOP-10 USB Converters ROHSWCH (Nanjing Qinheng Microelectronics)USB Converters
SKY65943-11
MCM-10(2.5x2.5)-40℃~+85℃ 1.559GHz~1.606GHz GPS、Galileo、GLONASS、GNSS Integrated low noise amplifier、Integrated RF filter MCM-10(2.5x2.5) RF Front End Circuits ROHSSkyworks SolutionsRF Front End Circuits
SHTC3
Digital I²C temperature / humidity sensor. Input voltage: 1.62 - 3.6 V Typical accuracy: ±2 %RH and ±0.2 °C Datasheet: https://www.sensirion.com/shtc3/SensirionUncategorised
TPS22917DBV
SOT-23-6-40℃~+125℃ 0V~5.5V 1 2A 80mΩ Active High Load Switch Output discharge function、Soft-start、Reverse current blocking SOT-23-6 Power Distribution Switches ROHSTexas InstrumentsPower Distribution Switches
ZX-GH1.25-WT4
SMD,P=1.25mm,卧贴-25℃~+85℃ 1 1.25mm 125V 1A 1x4P 4 4.35mm 4P 5mm 8.25mm Auxiliary Solder Pin Beige GH LCP Phosphor Bronze Surface Mount, Right Angle Tin SMD,P=1.25mm,卧贴 Wire To Board Connector ROHSMegastarWire To Board Connector
APHF1608LSEEQBDZGKC
SMD-4P,1.6x0.8mm-40℃~+85℃ 0.5mm 0.8mm 1.6mm 140° B:10mcd、G:90mcd、R:15mcd B:460nm、R:630nm、G:515nm Common Anode G:20mA、B:20mA、R:30mA G:525nm、R:621nm、B:465nm R:1.8V~2.1V、G:2.65V~3.1V、B:2.65V~3.1V R:3000V、G:450V、B:250V R:75mW、B:80mW、G:82mW Water Clear SMD-4P,1.6x0.8mm RGB LEDs ROHSKingbrightRGB LEDs
BQ25185DLHR
WSON-10-EP(2.2x2)-40℃~+125℃ 1 1A 2.2V 3V~18V 4.4V 4uA Charging IC Lithium Battery、LiFePO4 Battery Support WSON-10-EP(2.2x2) Battery Management ROHSTexas InstrumentsBattery Management
LIS3DH
LGA-16(3x3)-40℃~+85℃ 1.71V~3.6V 16bit 500nA Accelerometer Motion event detection SPI、I2C X,Y,Z ±16g LGA-16(3x3) Accelerometers ROHSSTMicroelectronicsAccelerometers
RFANT3216120A5T
1206-40℃~+85℃ 1.2mm 1.55mm 1.6mm 100MHz 2 2.4GHz 2dBi 3.2mm 1206 Antennas ROHSWalsin TechnologyAntennas
TPUSBLC6-2P6
SOT-666-6-55℃~+125℃ 0.8pF 100W@8/20us 16V 5A@8/20us 5V 6.5V 80nA IEC 61000-4-2、IEC 61000-4-5、IEC 61000-4-4 SOT-666-6 ESD and Surge Protection (TVS/ESD) ROHSTECH PUBLICESD And Surge Protection (TVS/ESD)
ZX-GH1.25-WT6
SMD,P=1.25mm,卧贴-25℃~+85℃ 1 1.25mm 10.75mm 125V 1A 1x6P 4.35mm 5mm 6 6P Auxiliary Solder Pin Beige Brass GH LCP Surface Mount, Right Angle Tin SMD,P=1.25mm,卧贴 Wire To Board Connector ROHSMegastarWire To Board Connector
XL-1005UBC
0402-40℃~+85℃ 120° 20mA 240mcd 3.3V 455nm~475nm 465nm 70mW Blue Discrete Diode Top-mount Water Clear 0402 LED Indication - Discrete ROHSXINGLIGHTLED Indication - Discrete
README
README.mdMIRA
Parts
172| Qty | Value | Footprint | References |
|---|---|---|---|
| 12 | Kobee Studio | kobee-studio-6ADCD390 | kobee-studio-6ADCD3D5, kobee-studio-6ADCD3E6, kobee-studio-6ADCD3FA, kobee-studio-6ADCD3FA, kobee-studio-6ADCD5CB, kobee-studio-6ADCD5DB, kobee-studio-6ADCD7BB, kobee-studio-6ADCD7DD, kobee-studio-6ADCD390, kobee-studio-6ADCD606, kobee-studio-6ADCD613, kobee-studio-6ADCD849 |
| 10 | 100n | Capacitor_SMD:C_0402_1005Metric | C3, C5, C28, C32, C34, C36, C39, C44, C45, C46 |
| 9 | SolderJumper_2_Open | _pico:SolderJumper_Mini | JP1, JP2, JP3, JP4, JP5, JP6, JP7, JP8, JP9 |
| 8 | 4.7k | Resistor_SMD:R_0402_1005Metric | R17, R18, R20, R23, R24, R25, R26, R27 |
| 6 | 0R | Resistor_SMD:R_0402_1005Metric | R5, R10, R28, R37, R38, R39 |
| 6 | 1k | Resistor_SMD:R_0402_1005Metric | R7, R11, R12, R21, R35, R36 |
| 5 | 100k | Resistor_SMD:R_0402_1005Metric | R14, R15, R30, R32, R33 |
| 5 | 100n | Capacitor_SMD:C_0201_0603Metric | C13, C14, C16, C19, C48 |
| 5 | 10u | Capacitor_SMD:C_0402_1005Metric | C6, C7, C12, C30, C50 |
| 5 | 1M | Resistor_SMD:R_0402_1005Metric | R1, R29, R31, R34, R41 |
| 5 | TBD | Capacitor_SMD:C_0402_1005Metric | C26, C40, C41, C42, C43 |
| 5 | XL-1005UBC_C22355736 | LED_SMD:LED_0402_1005Metric | D3, D6, D7, D8, D9 |
| 4 | 10k | Resistor_SMD:R_0402_1005Metric | R8, R16, R19, R40 |
| 3 | 1N5819WS | Diode_SMD:D_SOD-323 | D1, D2, D5 |
| 3 | 5.1k | Resistor_SMD:R_0402_1005Metric | R2, R3, R13 |
| 3 | MountingHole_Pad | MountingHole:MountingHole_2.2mm_M2_ISO7380_Pad | H1, H2, H3 |
| 3 | TestPoint | TestPoint:TestPoint_Pad_D1.0mm | TP2, TP4, TP5 |
| 2 | 1.25mm-2P socket | EasyEDA:CONN-SMD_1.25T-2P | CN3, CN4 |
| 2 | 100p | Capacitor_SMD:C_0201_0603Metric | C15, C38 |
| 2 | 120 | Inductor_SMD:L_0201_0603Metric | FB1, FB2 |
| 2 | 1u | Capacitor_SMD:C_0402_1005Metric | C51, C52 |
| 2 | 2.2u | Capacitor_SMD:C_0201_0603Metric | C18, C22 |
| 2 | 22u | Capacitor_SMD:C_0805_2012Metric | C4, C49 |
| 2 | 3.5nH | Inductor_SMD:L_0201_0603Metric | L4, L5 |
| 2 | 39p | Capacitor_SMD:C_0402_1005Metric | C35, C37 |
| 2 | 4.7u | Capacitor_SMD:C_0603_1608Metric | C31, C33 |
| 2 | 470p | Capacitor_SMD:C_0402_1005Metric | C9, C10 |
| 2 | BLM15PX121SN1D | Inductor_SMD:L_0402_1005Metric | L7, L10 |
| 2 | Conn_Coaxial_Small | Connector_Coaxial:U.FL_Molex_MCRF_73412-0110_Vertical | J2, J3 |
| 2 | DMN2990UFA-7B | EasyEDA:XFDFN-3_L0.8-W0.6-P0.35-BR | Q2, Q4 |
| 2 | FTSH-105 | EasyEDA:CONN-SMD_FTSH-105-01-L-DV-K-TR | CN1, CN2 |
| 2 | TPS22917DBV | Package_TO_SOT_SMD:SOT-23-6 | U4, U5 |
| 2 | ZX-GH1.25-WT4 | EasyEDA:CONN-SMD_4P-P1.25_ZX-GH1.25-WT4 | U13, U15 |
| 1 | 0.3p | Capacitor_SMD:C_0201_0603Metric | C24 |
| 1 | 1.5p | Capacitor_SMD:C_0402_1005Metric | C25 |
| 1 | 1.5p | Capacitor_SMD:C_0201_0603Metric | C20 |
| 1 | 10n | Capacitor_SMD:C_0402_1005Metric | C47 |
| 1 | 15p | Capacitor_SMD:C_0402_1005Metric | C27 |
| 1 | 16.2k | Resistor_SMD:R_0402_1005Metric | R4 |
| 1 | 18p | Capacitor_SMD:C_0201_0603Metric | C21 |
| 1 | 2.2 uH | Inductor_SMD:L_Coilcraft_XxL4020 | L1 |
| 1 | 2.7nH | Inductor_SMD:L_0201_0603Metric | L3 |
| 1 | 2p | Capacitor_SMD:C_0201_0603Metric | C23 |
| 1 | 3.9p | Capacitor_SMD:C_0201_0603Metric | C17 |
| 1 | 32.768KHz | Crystal:Crystal_SMD_MicroCrystal_CM9V-T1A-2Pin_1.6x1.0mm | X2 |
| 1 | 32MHz | EasyEDA:CRYSTAL-SMD_4P-L1.6-W1.2-BL | X1 |
| 1 | 330k | Resistor_SMD:R_0402_1005Metric | R42 |
| 1 | 36.5K | Resistor_SMD:R_0402_1005Metric | R6 |
| 1 | 4.7R | Resistor_SMD:R_0402_1005Metric | R22 |
| 1 | 4.7uH | Inductor_SMD:L_0603_1608Metric | L2 |
| 1 | 47u | Capacitor_SMD:C_0805_2012Metric | C29 |
| 1 | 5.6nH | Inductor_SMD:L_0402_1005Metric | L6 |
| 1 | 600R | Resistor_SMD:R_0402_1005Metric | R9 |
| 1 | 68nH | Inductor_SMD:L_0402_1005Metric | L8 |
| 1 | 9.1nH | Inductor_SMD:L_0402_1005Metric | L9 |
| 1 | AO3401A | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | APHF1608LSEEQBDZGKC | EasyEDA:LED-SMD_4P-L1.6-W0.8_APHF1608LSEEQBDZGKC | U16 |
| 1 | BQ25185DLHR | EasyEDA:WSON-10_L2.2-W2.0-P0.40-BL-EP_TI_DLH0010A | U6 |
| 1 | BZT52Bxx | Diode_SMD:D_SOD-123F | D4 |
| 1 | CH340E | Package_SO:MSOP-10_3x3mm_P0.5mm | U3 |
| 1 | DMP22D4UFA-7B | EasyEDA:X2-DFN0806-3_L0.8-W0.6-P0.35-BR | Q3 |
| 1 | HC-TYPE-C-16P-01M | EasyEDA:USB-C-SMD_HCTL_HC-TYPE-C-16P-01M | USB1 |
| 1 | JAE_SIM_Card_SF72S006 | Connector_JAE:JAE_SIM_Card_SF72S006 | J4 |
| 1 | LIS3DH | Package_LGA:LGA-16_3x3mm_P0.5mm_LayoutBorder3x5y | U11 |
| 1 | RFANT3216120A5T | EasyEDA:FILTER-SMD_1206-2P-L3.2-W1.6-L | U10 |
| 1 | SHTC3 | Sensor_Humidity:Sensirion_DFN-4-1EP_2x2mm_P1mm_EP0.7x1.6mm | U14 |
| 1 | SIM-S-IO3-MFF2-2-LP | EasyEDA:SON127P600X500X100-9N-D | IC1 |
| 1 | SKY65943-11 | EasyEDA:MCM-10_L2.5-W2.5-P0.50-BL-EP | U9 |
| 1 | TPD3F303DQDR | EasyEDA:WSON-8_L1.7-W1.4-P0.40-BL-EP | L11 |
| 1 | TPS63900 | Package_SON:WSON-10-1EP_2.5x2.5mm_P0.5mm_EP1.2x2mm_ThermalVias | U2 |
| 1 | USBLC6-2P6 | EasyEDA:SOT-666-6_L1.6-W1.2-P0.50-LS1.6-BL | U1 |
| 1 | VCC | TestPoint:TestPoint_Pad_D1.5mm | TP3 |
| 1 | ZX-GH1.25-WT6 | EasyEDA:CONN-SMD_6P-P1.25_ZX-GH1.25-WT6 | U12 |
| 1 | nRF54L15-QFXX | Package_DFN_QFN:QFN-48-1EP_6x6mm_P0.4mm_EP4.6x4.6mm | U7 |
| 1 | nRF9151-LAXX | PCM_nordic-lib-kicad-nrf9:LGA_9151_12.1x11.1mm | U8 |
The 171 most common of 172 parts.
Questions
How big is the MIRA PCB?
It measures 70 × 35 mm and has 4 copper layers, 1.6 mm thick.
What parts does the MIRA use?
172 parts, built around the CH340E, SKY65943-11, SHTC3 and TPS22917DBV. 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 MIRA KiCad files?
From the piecol/MIRA repository on GitHub, at the commit this page was made from: the board is MIRA.kicad_pcb and its schematic IO.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the MIRA design in my own project?
Its repository publishes it under the CERN-OHL-S-2.0 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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