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Formatting repairs plus verified corrections from the 2026-08-31 bench session (fact-checked against datasheets, board READMEs and firmware sources). Details per file in OpenDrone-Testing commit 06034b3. Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
OpenESC-20x20
Open source 4-in-1 BLDC ESC with a 20 x 20 mm mounting pattern, part of the incutec OpenDrone line. Four independent motor controllers, each with its own MCU, gate driver and six MOSFETs, running AM32 and taking DShot over the standard 8-pin connector.
Maintained by @Just4Stan.
Specifications
| Continuous | 40 A / channel |
| Firmware | AM32 |
| ESC protocol | DShot, bidirectional |
| Telemetry | Extended DShot |
| Input | 2-6S LiPo (6.0-25.2 V) |
| BEC | None |
| MCU | One per motor |
| MOSFETs | 6 per motor |
| Current sense | On-board, 165 A |
| FC connector | JST-SH 8-pin |
| Mounting | 20 x 20 mm, 3.0 mm holes |
| Dimensions | 31.2 x 33.0 mm |
| PCB | 6-layer, 1.6 mm, 2 oz copper |
Technical write-up, part list and layout constraints: AGENTS.md.
In the line
What pairs with what, and what is available: opendrone.be.
Contributing
See CONTRIBUTING.md.
License
Hardware licensed under CERN-OHL-S-2.0, see LICENSE.