4 layers89.8 × 64 mm
2 layers40 × 40 mm
Subira
rodneyosodo/subira- Size
- 40 × 40 mm
- Copper layers
- 2
- Thickness
- 1 mm
- Parts
- 54
- Nets
- 50
- Pads
- 233
- Tracks, vias
- 496, 40
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 28 Mar 2025
- Updated
- 6 Apr 2025
Overview
Subira is an open-source printed circuit board by rodneyosodo, from the rodneyosodo/subira repository on GitHub, published under the MIT licence. It is a 2-layer board of 40 × 40 mm with 54 parts on 50 nets, routed with 496 tracks and 40 vias.
It is built around the ESP32-S3-WROOM-1-N8, AMS1117-3.3 and BMI270, with the LSM9DS1 and WS2812B-2020 among its other parts. Its parts include 19 capacitors, 9 resistors, 4 ICs, 2 diodes and 2 switches. It belongs with the ESP32 boards of this library.
Main components
5
ESP32-S3-WROOM-1-N8
SMD,25.5x18mm-40℃~+85℃ -98.2dBm 2.4GHz 20.5dBm 355mA 3V~3.6V 95mA Bluetooth5.0 ESP32-S3 Chip On-board PCB Antenna UART、SPI、I2C、I2S、USB SMD,25.5x18mm WiFi Modules ROHSEspressif SystemsWiFi Modules
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
BMI270
LGA-14(2.5x3)-40℃~+85℃ 1.71V~3.6V 16bit 2KB 3.5uA Accelerometer Gyroscope SPI、I2C X,Y,Z X,Y,Z ±16g ±2000dps LGA-14(2.5x3) Accelerometers ROHSBosch SensortecAccelerometers
LSM9DS1
LGA-24(3x3.5)-40℃~+85℃ 1.9V~3.6V 16bit Accelerometer Gyroscope SPI、I2C X,Y,Z X,Y,Z ±16g ±2000dps LGA-24(3x3.5) Accelerometers ROHSSTMicroelectronicsAccelerometers
WS2812B-2020
SMD,2.2x2mm0.6mA 0.84mm 120us 160mcd 200mcd 2kHz 2mm 2mm 300ns 470.4nm 515.6nm 520mcd 5V 622.5nm 800Kbit/s Built-in power-on reset circuit、Built-in power-on reset circuit、Integrated intelligent reverse connection protection function Top-mount SMD,2.2x2mm RGB LEDs(Built-in IC) ROHSWorldsemiRGB LEDs(Built-In IC)
README
README.mdimu
Parts
54| Qty | Value | Footprint | References |
|---|---|---|---|
| 9 | 0.1uF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C5, C8, C10, C12, C14, C15, C16, C17, C19 |
| 7 | 10uF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C3, C4, C6, C7, C9, C11, C18 |
| 6 | 5.1K | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R3, R4, R6, R7, R8, R9 |
| 5 | TestPoint | TestPoint:TestPoint_Pad_D2.0mm | TP1, TP2, TP3, TP4, TP5 |
| 4 | MountingHole_2.2mm_M2_Pad_Via | MountingHole:MountingHole_2.2mm_M2_Pad_Via | REF1, REF2, REF3, REF4 |
| 2 | 10K | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R2 |
| 2 | 1uF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1, C2 |
| 2 | SW_Push | Button_Switch_SMD:SW_Push_SPST_NO_Alps_SKRK | SW1, SW2 |
| 1 | 10nF (±10%) 16V | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C13 |
| 1 | 62 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R5 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U2 |
| 1 | BMI270 | modules:BMI270_BOS-M | U3 |
| 1 | ESP32-S3-WROOM-1 | RF_Module:ESP32-S3-WROOM-1 | U1 |
| 1 | G*** | kibuzzard-67E73E61 | kibuzzard-67E73E61 |
| 1 | G*** | kibuzzard-67E8F709 | kibuzzard-67E8F709 |
| 1 | G*** | kibuzzard-67E73EA2 | kibuzzard-67E73EA2 |
| 1 | G*** | kibuzzard-67E73EAE | kibuzzard-67E73EAE |
| 1 | G*** | kibuzzard-67E8F774 | kibuzzard-67E8F774 |
| 1 | G*** | kibuzzard-67E73E95 | kibuzzard-67E73E95 |
| 1 | G*** | kibuzzard-67E73E58 | kibuzzard-67E73E58 |
| 1 | G*** | kibuzzard-67E73F75 | kibuzzard-67E73F75 |
| 1 | LED | LED_SMD:LED_0603_1608Metric | D1 |
| 1 | LSM9DS1 | Package_LGA:LGA-24L_3x3.5mm_P0.43mm | U4 |
| 1 | USB_C_Receptacle_USB2.0_14P | Connector_USB:USB_C_Receptacle_G-Switch_GT-USB-7010ASV | J1 |
| 1 | WS2812B-2020 | LED_SMD:LED_WS2812B-2020_PLCC4_2.0x2.0mm | D2 |
Questions
How big is the Subira PCB?
It measures 40 × 40 mm and has 2 copper layers, 1 mm thick.
What parts does the Subira use?
54 parts, built around the ESP32-S3-WROOM-1-N8, AMS1117-3.3, BMI270 and LSM9DS1. 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 Subira KiCad files?
From the rodneyosodo/subira repository on GitHub, at the commit this page was made from: the board is kicad/subira.kicad_pcb and its schematic kicad/subira.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Subira design in my own project?
Its repository publishes it under the MIT 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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