# Volans H7 — Stage 8 design reference

9 October 2026

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. Request the relevant 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.

### ESC1 / J5

| Pin | Signal |
| --- | --- |
| 1 | VBAT_IN |
| 2 | GND |
| 3 | ESC1 current |
| 4 | UART8 RX |
| 5 | M1 |
| 6 | M2 |
| 7 | M3 |
| 8 | M4 |

### ESC2 / J6

| Pin | Signal |
| --- | --- |
| 1 | VBAT_IN |
| 2 | GND |
| 3 | ESC2 current |
| 4 | ESC2 telemetry |
| 5 | M5 |
| 6 | M6 |
| 7 | M7 |
| 8 | M8 |

### VTX / J7

| Pin | Signal |
| --- | --- |
| 1 | 9V |
| 2 | GND |
| 3 | UART4 TX |
| 4 | UART4 RX |
| 5 | GND |
| 6 | O3 SBUS |

### RC / J8

| Pin | Signal |
| --- | --- |
| 1 | 4V5 |
| 2 | UART6 TX |
| 3 | UART6 RX |
| 4 | GND |

### GPS / J9

| Pin | Signal |
| --- | --- |
| 1 | 4V5 |
| 2 | UART1 TX |
| 3 | UART1 RX |
| 4 | I²C1 SCL |
| 5 | I²C1 SDA |
| 6 | GND |

### TEL1 / J10

| Pin | Signal |
| --- | --- |
| 1 | 5V |
| 2 | UART7 TX |
| 3 | UART7 RX |
| 4 | UART7 CTS |
| 5 | UART7 RTS |
| 6 | GND |

### TEL2 / J11

| Pin | Signal |
| --- | --- |
| 1 | 5V |
| 2 | UART2 TX |
| 3 | UART2 RX |
| 4 | GND |

### SER3 / J12

| Pin | Signal |
| --- | --- |
| 1 | 5V |
| 2 | UART3 TX |
| 3 | UART3 RX |
| 4 | GND |

### CAN / J13

| Pin | Signal |
| --- | --- |
| 1 | 5V |
| 2 | CAN H |
| 3 | CAN L |
| 4 | GND |

## Contact

support@volanssystems.in · +91 91166 65109

H7 preorder: ₹9,999. MRP: ₹12,000. Confirm availability, dispatch timing, shipping, tax treatment, payment arrangements, warranty and return terms before ordering. An enquiry does not take payment.