/ INTELLIGENT — DRONE STACK

The brain of
the aircraft

Two variants for two platform classes — the 65A stack for 4S / 6S platforms, the 100A stack for 6S / 8S heavy-lift platforms. Two different boards, each with its own voltage range and flight controller.

NDAA-COMPLIANT EUROPEAN CHIPSET
Explore the stack
/ 01 — DRONE STACK 65A

NAS Drone Stack 65A — FC + 4-in-1 ESC

Flight controller and ESC engineered for continuous operation. The NAS Drone Stack 65A pairs a flight controller with a 4-in-1 electronic speed controller on a single stack: the FC carries the sensing, link and logging; the ESC carries the current.

65 A Continuous current · 70 A burst (5 s)
Agility

Digital motor control over DSHOT on all four outputs — checksummed throttle commands, no analogue calibration, no drift over time.

Link

With ELRS, the stack provides an ultra-fast, highly reliable, long-range and lightweight control link between the drone and the remote controller.

Flexibility

Runs on both 4S and 6S batteries across a 12.0–26 V input range — one stack, no reconfiguration between packs.

FLIGHT CONTROLLER · STM32F405
Flight controller board of the NAS Drone Stack 65A
[ FLIGHT CONTROLLER ]
Flight controller MCUSTM32F405
IMUICM-42688-P / IIM-42652, 6-axis
Blackbox128 Mbit integrated SPI flash
UART6×
GPIO2× configurable
ProtocolsELRS · I2C · SBUS / IBUS / CRSF
CameraDual, 5 V and 12 V up to 2 A
Power rails5 V / 12 V selectable, up to 2 A
BarometerBMP280 / DPS310
Software supportBetaflight & ArduPilot
FC dimensions / weight40 × 49.5 mm · 12 g
4-IN-1 ESC · 65A
4-in-1 ESC board of the NAS Drone Stack 65A
[ 4-IN-1 ESC ]
Continuous current65 A
Burst current70 A (5 s)
Input voltage4S / 6S · 12.0–26 V
ESC MCUSTM32F051, AM32 firmware
Motor outputDSHOT, 4 channels, bidirectional
Current sensorAnalog output
ESC dimensions46.5 × 52.5 mm
ESC weight24 g

ESC control connector 8 pins / pads · battery output connector 4 pins · motor pads 3×4 on both sides · battery pads on both sides · thru-hole capacitor pads.

/ 02 — DRONE STACK 100A

NAS Drone Stack 100A — 4-in-1 ESC

High-current ESC engineered for heavy-lift platforms in continuous operation. The NAS Drone Stack 100A is a 4-in-1 electronic speed controller built for 6S / 8S platforms — STM32F051 with AM32 firmware, bidirectional DSHOT motor output and UART KISS telemetry.

100 A Continuous current · 105 A burst (5 s)
Heavy-lift

Built for 6S / 8S heavy-lift platforms in continuous operation, across an 18.0–35 V input range.

Telemetry

Bidirectional DSHOT and UART KISS telemetry return live motor data to the flight controller.

Open firmware

The ESC runs AM32 — open-source firmware with bidirectional DSHOT support.

4-IN-1 ESC · 100A
4-in-1 ESC board of the NAS Drone Stack 100A
[ 4-IN-1 ESC ]
Continuous current100 A
Burst current105 A (5 s)
Input voltage6S / 8S · 18.0–35 V
ESC MCUSTM32F051, AM32 firmware
Motor outputDSHOT, 4 channels, bidirectional
TelemetryDSHOT, UART KISS
Current sensorAnalog output
Dimensions59 × 63 mm
Weight36 g

ESC control connector 8 pins / pads · battery output connector 4 pins · motor pads 3×4 on both sides · battery pads on both sides · thru-hole capacitor pads.

FLIGHT CONTROLLER · STM32F722
Flight controller board of the NAS Drone Stack 100A
[ FLIGHT CONTROLLER ]
Flight controller MCUSTM32F722 · Arm Cortex-M7
IMUICM-42688-P / IIM-42652, 6-axis
BarometerBMP280 / DPS310
Blackbox128 Mbit integrated SPI flash
I/O6× UART · 2× servo
ProtocolsELRS · SBUS / IBUS / CRSF
Software supportBetaflight
VideoDual cam · DJI Air Unit · AT7456E OSD
Power system60 V / 3 A
FC dimensions / weight40 × 49.5 mm · 14 g

NDAA Compliant

A US standard that sets a high bar — also within NATO. The stack is built on an NDAA-compliant European chipset. Although it is US law, NDAA compliance functions today as an international security standard — many partners and defence organisations in NATO countries, including Denmark, require it.

/ 03 — FIELD TEST
FIELD TEST · KOLIBRI DEFENCE
We are proud to use NAS avionics on our elite FPV drone platforms. Easy-to-solder ESC motor pads, high power output, and a versatile flight controller are exactly what we have been looking for in the European market for a long time.
Henri Christensen
CEO, Kolibri Defence
Finnish dual-use FPV drone design house and manufacturer.