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File 01 · 4-in-1 ESC

An ESC (or 4)

6 mosfets per motor, 2 for each phase. Driven by a gate driver, controlled by a microcontroller. Duplicate that 4 times et voila, 'An ESC'.

Model· pick your build

Coming soonSKU OPENESC-3030

Teardown

  • AT32F421 motor MCU×4
  • NSG2065Q gate driver×4
  • SP40N01 power MOSFET (both sides)×24
  • INA186A3 current sense×1
  • 0.2 mΩ sense shunt×2
  • TLV767 3.3 V LDO×1
  • LMR54406 buck×1
  • JST-SH FC connector×1
  • Motor solder pads×1
  • Battery pads×1
  • Signal pads×1
  • Bulk ceramic capacitor array×48
Inspect interactively ↗

Published so you can study it. Produced so you don't have to.

Study

GitHub repo ↗

Schematic · PCB · BOM · 3D STEP · design notes

OSHWA-certified open source hardware · BE000029BE000029

CERN-OHL-S v2 ↗

Changelog

Commit history ↗

Every revision, public on GitHub

In the box

  • 1×OpenESC
  • 2×8-pin JST cable
  • 1×XT battery pigtail
  • 4×M3 grommets
  • 1×Low-ESR Electrolytic Capacitor

Provenance

  • DesignedLeuven, Belgium · schematic, PCB, BOM, firmware partnerships
  • AssembledShenzhen, China · first runs, while we bring up an EU line
  • NextEU assembly · in planning

Every spec, one table

Firmware
AM32
Protocol
DShot · bidirectional DShot telemetry · PWM
Input
3–6S LiPo (11.1–25.2 V)
MCU
AT32F421G8U7, 120 MHz
Gate driver
NSG2065Q (QFN-24)
Current sense
INA186A3 + 2× 0.2 mΩ shunt · 10 mV/A, 330 A full-scale
Power rails
LMR54406DBVR buck + TLV76733 LDO
Connector
JST SM08B-SRSS-TB (8-pin BF)
License
CERN-OHL-S-2.0
Continuous
50 A / channel (preliminary, bench characterization pending)
MOSFETs
SP40N01GHNK, 40 V / 1.2 mΩ
PCB
6-layer, 30×30 mount

You asked. We changed it.

Open hardware means the feedback loop is public too. These are design changes that started as an issue or a PR from someone who isn't us — receipts linked.

  • Vishal01Mehra ↗ The FC connector and pinout didn’t follow the Betaflight connector standard. He sent the fix as a PR, not just a complaint.

    Merged. The board switched to the JST-SH connector with the corrected Betaflight-standard pinout; that’s the connector on every OpenESC since.

Manufacturer

Company
Incutec BV
Address
Stapelhuisstraat 15, 3000 Leuven, Belgium
E-mail
contact@opendrone.be

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