Description

The HDZero Halo 70A 3-8S AM32 4-in-1 ESC - 20x20 is designed for pilots who demand both power and reliability. Whether you're pushing limits in drone racing or freestyle, this ESC delivers unmatched durability and throttle response. At the heart of the Halo ESC is a split-board architecture, separating the control and power stages for improved thermal performance and crash resilience. An integrated copper bar and 3oz copper across 8 PCB layers ensure rapid current flow and superior heat dissipation—specially optimized to sharpen burst throttle response and minimize voltage drop during aggressive maneuvers. With continuous 70A output per motor channel (for up to 30 seconds) and 100A burst capability, the Halo ESC powers through demanding flights while protecting critical electronics with clean power delivery. Voltage spikes are isolated from the MCU and drivers. This vital protection helps prevent MCU brownouts or lockups—common culprits behind burnt motors, failed MOSFETs, and critical flight failures.

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Features

• Built for maximum performance and durability in race and freestyle drones
• Split-board architecture with copper bus bar for optimized burst throttle response
• 8-layer PCB with 3oz copper per layer and 24 MOSFETs
• Exceptionally clean power delivery protects flight controller from voltage spikes
• Conformal coating for moisture, dust, and corrosion protection
• Dual-sided motor solder pads for flexible builds

Specifications

• MCU: AT32F421 (120MHz)
• Firmware: AM32 2.18
  • Target: HDZ_ESC_1R0_F421
• Input Voltage: DC 9V – 40V (3S – 8S)
• Telemetry: Supported
• Input Signal: Dshot 150/300/600/1200/2400, MultiShot, OneShot 
• Output Voltage: VBAT (to power the FC)
• Max Current: Over 70Ax4 (Continuous) / 100Ax4 (Burst) 
• Current Sensor: Scale = 170, offset = 0
• Dual-Sided Solder Pads: YES
• Dimensions: 33x43mm
• Mounting: 20x20mm, Φ4mm holes with Φ3mm grommets

Includes

• 1x HDZero Halo 70A 3-8S AM32 4-in-1 ESC - 20x20
• 1x ESC cable (8-pin SH1.0, 30mm)
• 1x XT60 cable (70mm,12AWG)
• 1x 35V/1000uf capacitor
• 5x Rubber grommet (4.5mm height)
• 5x Rubber grommet (6.6mm height)
• 5x Nylon washer (M3 1.0mm thick)