4 layers93.3 × 60.3 mm
Arduino 386EX V5
dbalsom/arduinoX86
An interface between an Arduino Due or Arduino GIGA and 8088, 8086, V20, V30, 186 or 286 CPUs
56 parts114
2 layers54.5 × 39.5 mm
Airspeed BIO
min4604/airspeed-indicator1- Size
- 54.5 × 39.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 88
- Nets
- 85
- Pads
- 306
- Tracks, vias
- 524, 93
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 11 Jul 2025
- Updated
- 23 Mar 2026
Overview
Airspeed BIO is an open-source printed circuit board by min4604, from the min4604/airspeed-indicator repository on GitHub. It is a 2-layer board of 54.5 × 39.5 mm with 88 parts on 85 nets, routed with 524 tracks and 93 vias.
It is built around the LDL1117S33R and MP2637GR-P. Its parts include 29 resistors, 28 capacitors, 7 ICs, 4 connectors and 3 diodes. It belongs with the STM32 boards of this library.
Main components
2
LDL1117S33R
SOT-223-4-40℃~+125℃@(Tj) 1 1.2A 18V 3.3V 500uA 600mV@(1.2A) 60uVrms 87dB@(120Hz) Fixed Over Current Protection、Thermal Shutdown Positive SOT-223-4 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSSTMicroelectronicsVoltage Regulators - Linear, Low Drop Out (LDO) RegulatorsMP2637GR-P
QFN-24(4x4)-20℃~+85℃ 1 2.5A 6V QFN-24(4x4) Battery Management ROHSMonolithic Power SystemsBattery Management
README
README.mdAirspeeds system
Can use PC read real time data.
Schematic design end.
Parts
88| Qty | Value | Footprint | References |
|---|---|---|---|
| 7 | 10uF | Capacitor_SMD:C_0603_1608Metric | C2, C3, C4, C7, C8, C10, C11 |
| 5 | 0.1u | Capacitor_SMD:C_0603_1608Metric | C17, C19, C20, C21, C26 |
| 4 | 4.7u | Capacitor_SMD:C_0603_1608Metric | C15, C16, C18, C25 |
| 4 | MountingHole | MountingHole:MountingHole_2.2mm_M2 | H1, H2, H3, H4 |
| 3 | 10K | Resistor_SMD:R_0603_1608Metric | R11, R14, R16 |
| 3 | 2.1K | Resistor_SMD:R_0603_1608Metric | R7, R24, R25 |
| 3 | 22uF | Capacitor_SMD:C_0603_1608Metric | C1, C9, C12 |
| 3 | 5.1K | Resistor_SMD:R_0603_1608Metric | R1, R2, R3 |
| 2 | 0 | Resistor_SMD:R_0603_1608Metric | R9, R26 |
| 2 | 13p | Capacitor_SMD:C_0603_1608Metric | C22, C23 |
| 2 | 2.7K | Resistor_SMD:R_0603_1608Metric | R19, R20 |
| 2 | 434123025826 | TTR:434123025826 | SW2, SW3 |
| 2 | 47u | Capacitor_SMD:C_0805_2012Metric | C27, C28 |
| 2 | 5.1k | Resistor_SMD:R_0603_1608Metric | R22, R23 |
| 1 | 1.2K | Resistor_SMD:R_0603_1608Metric | R18 |
| 1 | 100nF | Capacitor_SMD:C_0603_1608Metric | C6 |
| 1 | 10K | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P1.90mm_Vertical | TH1 |
| 1 | 10k | Resistor_SMD:R_0603_1608Metric | R27 |
| 1 | 120K | Resistor_SMD:R_0603_1608Metric | R13 |
| 1 | 120pF | Capacitor_SMD:C_0603_1608Metric | C5 |
| 1 | 15K | Resistor_SMD:R_0603_1608Metric | R6 |
| 1 | 1M | Resistor_SMD:R_0603_1608Metric | R21 |
| 1 | 1u | Capacitor_SMD:C_0603_1608Metric | C24 |
| 1 | 2.2uH | Inductor_SMD:L_1210_3225Metric | L1 |
| 1 | 20m | Resistor_SMD:R_1206_3216Metric | R15 |
| 1 | 23.7K | Resistor_SMD:R_0603_1608Metric | R5 |
| 1 | 2511020213301 | TTR:2511020213301 | U3 |
| 1 | 2513130810102 | TTR:2513130810102_hand | U4 |
| 1 | 2525020210002 | TTR:2525020210002 | U5 |
| 1 | 2607011111000 | TTR:2607011111000 | U7 |
| 1 | 287 | Resistor_SMD:R_0603_1608Metric | R28 |
| 1 | 2N7002 | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | 3.3V | LED_SMD:LED_0603_1608Metric | RLED1 |
| 1 | 31.6K | Resistor_SMD:R_0603_1608Metric | R10 |
| 1 | 374 | Resistor_SMD:R_0603_1608Metric | R29 |
| 1 | 4.7n | Capacitor_SMD:C_0603_1608Metric | C14 |
| 1 | 4.7u_50V_we | Capacitor_SMD:C_1210_3225Metric | C13 |
| 1 | 45.3K | Resistor_SMD:R_0603_1608Metric | R4 |
| 1 | 57.6K | Resistor_SMD:R_0603_1608Metric | R12 |
| 1 | 830108313809 | TTR:WE-CFPX-180 | Y1 |
| 1 | 845 | Resistor_SMD:R_0603_1608Metric | R17 |
| 1 | 90.9K | Resistor_SMD:R_0603_1608Metric | R8 |
| 1 | BATT | Connector_JST:JST_XH_S2B-XH-A-1_1x02_P2.50mm_Horizontal | J3 |
| 1 | BLED | LED_SMD:LED_0603_1608Metric | D2 |
| 1 | GLED | LED_SMD:LED_0603_1608Metric | D3 |
| 1 | GND | TestPoint:TestPoint_Pad_D1.0mm | TP1 |
| 1 | LDL1117S33R | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U2 |
| 1 | LOGO | TTR:TTR_Logo | G*** |
| 1 | LOG_DEBUG | TTR:62731420621 | J2 |
| 1 | MP2637GR-P | TTR:MP2637(QFN-24-4x4mm) | U1 |
| 1 | Pressure Vout | TestPoint:TestPoint_Pad_D1.0mm | TP2 |
| 1 | RF | Connector_Coaxial:U.FL_Hirose_U.FL-R-SMT-1_Vertical | J4 |
| 1 | RX | LED_SMD:LED_0603_1608Metric | RLED2 |
| 1 | STM32F042G6Ux | Package_DFN_QFN:QFN-28_4x4mm_P0.5mm | U6 |
| 1 | SW_SPDT | TTR:switch_450301014042 | SW1 |
| 1 | TX | LED_SMD:LED_0603_1608Metric | YLED1 |
| 1 | USB_C_Receptacle_USB2.0_16P | TTR:USB_C_Receptacle_WE_632723300011_hand | J1 |
| 1 | YLED | LED_SMD:LED_0603_1608Metric | D1 |
Questions
How big is the Airspeed BIO PCB?
It measures 54.5 × 39.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Airspeed BIO use?
88 parts, built around the LDL1117S33R and MP2637GR-P. 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 Airspeed BIO KiCad files?
From the min4604/airspeed-indicator repository on GitHub, at the commit this page was made from: the board is Hardware/RF/airspeed_BIO.kicad_pcb and its schematic Hardware/RF/MCU.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Airspeed BIO design in my own project?
Its repository states no licence, so its author keeps all rights: ask min4604 before reusing the design.
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