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Component Library

The standard parts that recur across OpenSkyhawk boards, with their KiCad symbols. Most are KiCad built-ins; a few are in the shared OpenSkyhawk library. For how the library is wired up, see KiCad Workflow.

Active parts

Part Package Role KiCad symbol
STM32F103C8 / CB LQFP48 CAN node MCU (C8 default all boards; CB drop-in fallback) MCU_ST_STM32F1:STM32F103CBTx
SN65HVD230 SOIC-8 CAN transceiver, 3.3 V Interface_CAN_LIN:SN65HVD230
MCP23017 SOIC-28 I²C digital I/O expander (16-bit) Interface_Expansion:MCP23017x-x-SO
ADS1115 — I²C 16-bit ADC, 4 channels Analog_ADC:ADS1115
AMS1117-3.3 SOT-223 5 V → 3.3 V LDO (every board) Regulator_Linear:AMS1117-3.3_SOT223
IRLML2502 SOT-23 LED zone MOSFET (low-side, logic-level) OpenSkyhawk:IRLML2502
8 MHz crystal — HSE for CAN timing Device:Crystal
LED 5050 (red) 6-pad 5050 Panel backlight (5-in-series strings) OpenSkyhawk:LED_5050_Red

Gauge steppers

Part Role KiCad symbol
X27.589 Gauge needle stepper (e.g. cabin pressure) OpenSkyhawk:X27.589_Stepper
X27.168 Gauge needle stepper (single-mount variant) OpenSkyhawk:X27.168_Stepper

Stepper driver: DRV8833

The gauge needle steppers are driven by a DRV8833 dual H-bridge — four logic inputs per motor (two coils), motor supply (VM) on the 5 V rail. Drive the X27 air-core at 5 V.

High-current boards only

Part Package Role KiCad symbol
AP63205WU SOT-23-6 12 V → 5 V switching buck OpenSkyhawk:AP63205WU (pending — add when first needed)

Standard MCU and breakout boards do not carry this — they draw 5 V from the bus. It's only for future high-5V-current boards. See Power Architecture.

Notes

  • The custom OpenSkyhawk symbols (LED 5050, IRLML2502, the steppers) live in PCB/Libraries/OpenSkyhawk.kicad_sym + OpenSkyhawk.pretty/. Everything else is a KiCad built-in — no custom entry needed.
  • SN65HVD230 3.3 V clones (e.g. VP230) are acceptable for JLCPCB assembly.
  • The MCP23017 GPA7/GPB7 input restriction (silicon bug — output only) is covered in Hardware Standards.