4 layers160 × 106 mm
4 layers160 × 106 mm
MiniSlat
albachten/MiniSlatMiniSlat - a 2 cue w/radio Pyro Ematch controller
- Size
- 160 × 106 mm
- Copper layers
- 4
- Thickness
- 1.61 mm
- Parts
- 77
- Nets
- 89
- Pads
- 253
- Tracks, vias
- 557, 136
- Pours
- 420
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 14 Oct 2026
- Updated
- 22 Oct 2026
Overview
MiniSlat is an open-source printed circuit board by albachten, from the albachten/MiniSlat repository on GitHub, published under the CC0-1.0 licence. It is a 4-layer board of 160 × 106 mm with 77 parts on 89 nets, routed with 557 tracks and 136 vias.
It is built around the ATSAMD21G18A-AU, INA219BID and AP7370-33SA, with the RFM95W-915S2, BAT54W and DMG3402L among its other parts. Its parts include 23 resistors, 13 diodes, 10 capacitors, 5 connectors and 4 ICs. It belongs with the radio and wireless boards and the SAM D and SAM boards of this library.
Main components
9
ATSAMD21G18A-AU
TQFP-48-40℃~+85℃ 1.62V~3.6V 10bit 12bit 256KB 32 Bit 32KB 38 48MHz ARM Cortex-M0+ Built-in FLASH 上电复位(POR)、欠压检测(BOR/LVD/LVR/LVI)、看门狗复位、内置通用定时器、硬件CRC、日历功能、触控功能 TQFP-48(7x7) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
INA219BID
SOIC-8-40℃~+125℃ 0.1uV/℃ 10uV 120dB 20uA 300mV~26V 3V~5.5V 700uA Zero drift / auto-zero、Input filter、Power monitoring、Digital output interface ±26V SOIC-8 Current Sense Amplifiers ROHSTexas InstrumentsCurrent Sense Amplifiers
AP7370-33SA
SOT-23-40℃~+125℃@(Tj) 1 1.5uA 18V 3.3V 500mA 500mV@(100mA) Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown、Reverse-polarity current protection Positive SOT-23 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSDiodes IncorporatedVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
RFM95W-915S2
LCC-16_16X16mmLCC-16_16X16mm New Arrivals ROHSHopeRF Micro-electronicsUncategorised
BAT54W
SOD-123Schottky DiodeshongjiachengDMG3402L
SOT-23-55℃~+150℃ 1 N-channel 1.4V 1.4W 11.7nC@10V 30V 43.8pF 464pF 49.5pF 4A 85mΩ@2.5V SOT-23 MOSFETs ROHSDiodes IncorporatedMOSFETsDMG3401LSN
SOT-23-55℃~+150℃ 1 P-Channel 1.2W 1.326nF 1.3V 25.1nC@10V 3.7A 30V 71pF 85mΩ@2.5V P-Channel SOT-23 MOSFETs ROHSDiodes IncorporatedMOSFETsMMBT3904L
SOT-23-55℃~+150℃ 1 NPN 200mA 200mV 225mW 300MHz 40 40V 50nA 6V NPN SOT-23 Bipolar (BJT) ROHSonsemiBipolar (BJT)
S3A
SMB-65℃~+175℃ 1 Independent 1.1V@3A 100A 3A 50V 5uA@50V SMB Diodes - General Purpose ROHSBORNDiodes - General Purpose
README
README.mdMiniSlat - 2 cue pyro slat
This is an ARM Cortex M0 board with:
- SAMD21 cpu
- USB for programming & serial debug
- Cortex Debug connector for bootloader install & hw debug
- 2 Pairs of PyroClips (2 cues)
- 915MHz HopeRF RFM95 Lora module
- 2S 18650 LiPo supply (two cells in series) with safe/armed power switch
- INA219 current sensing for continuity test & fire monitoring
- 2 NeoPixels as per-cue status indicators
- I2C expansion (QWIIC connector & 4-pin header)
See SOFTWARE_SPEC.md for pin assignments, I2C addresses, and firmware requirements.
Parts
77| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | 1u | Capacitor_SMD:C_0603_1608Metric | C3, C4, C5, C6, C7, C8 |
| 4 | 510R | Resistor_SMD:R_0603_1608Metric | R5, R6, R9, R23 |
| 4 | BAT54W | Diode_SMD:D_SOD-123 | D1, D2, D3, D4 |
| 4 | MountingHole_3.2mm_M3_ISO7380_Pad | MountingHole:MountingHole_3.2mm_M3_ISO7380_Pad | H1, H2, H3, H4 |
| 3 | 10K | Resistor_SMD:R_0603_1608Metric | R3, R4, R7 |
| 3 | 1M | Resistor_SMD:R_0603_1608Metric | R10, R14, R21 |
| 3 | RCTCTE | MyLib:RCTCTE | TP1, TP2, TP3 |
| 2 | 100K | Resistor_SMD:R_0603_1608Metric | R2, R12 |
| 2 | 100R | Resistor_SMD:R_0603_1608Metric | R15, R22 |
| 2 | 10R | Resistor_SMD:R_0603_1608Metric | R19, R20 |
| 2 | 18p | Capacitor_SMD:C_0603_1608Metric | C1, C2 |
| 2 | 5K1 | Resistor_SMD:R_0603_1608Metric | R8, R13 |
| 2 | DMG3402 | Package_TO_SOT_SMD:SOT-23 | Q3, Q4 |
| 2 | LOGO | MyLib:pirho | LOGO1, LOGO2 |
| 2 | PyroClip | MyLib:PyroClipRed | CLIP1, CLIP3 |
| 2 | PyroClip | MyLib:PyroClipBlack | CLIP2, CLIP4 |
| 2 | RED | LED_SMD:LED_0805_2012Metric | LED3, LED4 |
| 2 | YELLOW | LED_SMD:LED_0805_2012Metric | LED1, LED2 |
| 2 | neopixel | MyLib:LED_WS2812B-2020_PLCC4_2.0x2.0mm | D7, D8 |
| 1 | 100m 1% 3W | Resistor_SMD:R_2512_6332Metric | R18 |
| 1 | 100n | Capacitor_SMD:C_0603_1608Metric | C9 |
| 1 | 1048 | MyLib:BAT_1048P | BT1 |
| 1 | 10V | Package_TO_SOT_SMD:SOT-23 | D5 |
| 1 | 10u | Capacitor_SMD:C_0603_1608Metric | C10 |
| 1 | 150R | Resistor_SMD:R_0603_1608Metric | R16 |
| 1 | 200K | Resistor_SMD:R_0603_1608Metric | R1 |
| 1 | 2K | Resistor_SMD:R_0603_1608Metric | R11 |
| 1 | 2R 5W | Resistor_THT:R_Axial_Power_L25.0mm_W6.4mm_P27.94mm | R17 |
| 1 | 32.768K-12.5p | MyLib:Crystal_SMD_G8-2Pin_3.2x1.5mm | Y1 |
| 1 | 915Mhz | MyLib:Antenna915MHzSimpleCoil | ANT1 |
| 1 | AP7370-33SA | Package_TO_SOT_SMD:TSOT-23 | U3 |
| 1 | ATSAMD21G18A-A | Package_QFP:TQFP-48_7x7mm_P0.5mm | U1 |
| 1 | DEBUG | MyLib:CortexDebugSMD | J2 |
| 1 | DMG3401 | MyLib:SC-59 | Q2 |
| 1 | GREEN | LED_SMD:LED_0805_2012Metric | LED5 |
| 1 | I2C | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J5 |
| 1 | INA219B | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U4 |
| 1 | MMBT3904L | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | QWIIC | MyLib:QWIIC_JST_SH_BM04B-SRSS-TB_1x04-1MP_P1.00mm_Vertical | J4 |
| 1 | RESET | MyLib:TL3305B_SPST_PushButton | SW1 |
| 1 | RFM95W-915S2 | MyLib:RFM95CW | U2 |
| 1 | S3A | MyLib:D_SMC | D6 |
| 1 | SERIAL1 | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical | J3 |
| 1 | SPDT | MyLib:spdt_100SP1T1B2M2QE | SW2 |
| 1 | USB_B_Micro | MyLib:USB_Micro-B_Amphenol_10118194_Horizontal | J1 |
Questions
How big is the MiniSlat PCB?
It measures 160 × 106 mm and has 4 copper layers, 1.61 mm thick.
What parts does the MiniSlat use?
77 parts, built around the ATSAMD21G18A-AU, INA219BID, AP7370-33SA and RFM95W-915S2. 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 MiniSlat KiCad files?
From the albachten/MiniSlat repository on GitHub, at the commit this page was made from: the board is MiniSlat.kicad_pcb and its schematic MiniSlat.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the MiniSlat design in my own project?
Its repository publishes it under the CC0-1.0 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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