iFlight BLITZ Mini ATF435 Stack (E55S Mini 4-in-1 ESC)

The iFlight BLITZ Mini ATF435 Stack pairs an AT32F435-based flight controller with a 55A BLHeli_S 4-in-1 ESC (the E55S Mini) in a 20x20mm footprint, aimed at 5-inch freestyle, racing and cinewhoop builds that want AT32-class processing headroom.

Key features

• AT32F435 MCU at 288MHz gives faster Betaflight loop times than a typical F405 or F722 board.
• 55A continuous (65A burst) ESC handles aggressive 6S 5-inch motors, running BLHeli_S with full Bluejay support for bidirectional DShot and RPM filtering.
• Six hardware UARTs and a 5V/2.5A BEC leave room for HD VTX, a receiver, GPS and telemetry on one stack.
• DPS310 barometer and 16MB blackbox flash support altitude hold and detailed flight logging.
• Plug-and-play DJI HD VTX connector avoids extra soldering on digital builds.

Specifications

• FC MCU: AT32F435 (288MHz)
• Gyro: BMI270
• Barometer: DPS310
• OSD: AT7456E
• Input voltage: 2-6S LiPo
• ESC current: 55A continuous, 65A burst
• ESC telemetry: no serial telemetry output; onboard current sensor
• UARTs: 6
• Blackbox: 16MB flash
• BEC: 5V 2.5A
• Mounting size: 20x20mm, 4 mm holes
• FC dimensions: 30.5 x 27 mm
• Weight: 5g (FC) + 11.3g (ESC)
• In the box: BLITZ Mini ATF435 flight controller, E55S Mini 4-in-1 ESC, power cables and ESC signal wires

Runs on Betaflight, and suits compact 5-inch frames where 20x20mm mounting space is fixed but the build still needs full 6S power handling and headroom for a digital video system.