Stage 8 design reference · 9 October 2026. This layout is still unrouted. Confirm the supplied board revision with Volans before using these assignments. Voltage limits, continuous output currents, weight and assembled height are not specified here.
This is a development design reference, not a released product datasheet. Firmware support and ADRC availability were confirmed by Volans. Hardware and electrical pin assignments are taken from the latest Stage 8 design. Get the released documentation and build for your supplied board before wiring or flashing.
Hardware
Item
Design reference
Processor
STM32H743VIH6
Inertial sensors
Dual IIM-42652 IMUs
Barometer
DPS368
Storage
microSD socket with SDIO interface
USB
USB Type-C
Motor connections
M1–M8 through two 8-pin ESC connectors
Additional outputs
S1 / S2, buzzer and addressable LED signal
Serial interfaces
7 UART TX/RX pairs; UART7 also has CTS / RTS
Expansion
CAN, I²C and SPI interfaces
Monitoring signals
Battery voltage, ESC current, RSSI and airspeed ADC
Power rail labels
5V / 9V / 4V5 / 3V3
PCB outline
38.5 × 38.5 mm
Mounting centres
30.5 × 30.5 mm; 4 mm holes with corner slots
PCB construction
6 copper layers; black solder mask, white lettering, ENIG finish
Firmware
Platform
Support
ArduPilot
H7 support, including Active Disturbance Rejection Control (ADRC).
PX4
Supported on the Volans H7.
Betaflight
Supported on the Volans H7.
INAV
Supported on the Volans H7.
ADRC is supported through ArduPilot on the Volans H7. Ask Volans for the matching build, configuration and tuning instructions. Support does not imply inclusion in every upstream release.
Connector assignments
Pin numbers are KiCad electrical pin numbers, not left-to-right positions in a photograph. Confirm cable orientation, supply limits, peripheral requirements and shared UART/jumper configuration with Volans. Firmware target names, tested releases and flashing files are available by enquiry; they are not included in this document.