4in1
OliviezGit·OpenESC-30x30·hardware/4in1.kicad_pcb
About the 4in1 PCB
4in1 is an open source PCB design by OliviezGit, published on GitHub under the CERN-OHL-S-2.0 license. It is a 6-layer board measuring 41.6 × 42.5 mm, with 207 components from 23 distinct parts.
Other key parts include the AT32F421G8U7, NSG2065Q, INA186A3IDCKR, LMR54406DBVR and FTC160808S4R7MBCA. By type, the board carries 86 capacitors, 79 resistors, 24 transistors, 12 ICs, 3 diodes and 1 connector.
It belongs with the robotics & motion, power & battery and test & measurement designs in this gallery.
From the project
Open-source 4-in-1 BLDC ESC with a 30.5 × 30.5 mm mounting pattern, built around four independent AT32F421 motor controllers running AM32. Six-layer, DShot over the standard 8-pin connector. Designed in KiCad for JLCPCB assembly.
Open-source 4-in-1 BLDC ESC with a 30.5 × 30.5 mm mounting pattern, built around four independent AT32F421 motor controllers running AM32. Six-layer, DShot over the standard 8-pin connector. Designed in KiCad for JLCPCB assembly.
Part of the incutec OpenDrone line (incutec-hw/OpenESC-30x30).
Four fully independent ESC channels share a common power input and telemetry connector. Each channel has its own MCU and gate driver; the high-current stage is six MOSFETs per channel (three half-bridges). This is the distributed-MCU AM32 4-in-1 topology rather than a single-MCU design. Values below are…

Main components on the 4in1
4in1 bill of materials (BOM)
207 components, 23 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 4 | AT32F421G8U7 ArteryTek | QFN-28_L4.0-W4.0-P0.40-TL-EP2.4 | U2, U5, U7, U9 |
| 4 | NSG2065Q | QFN-24_L4.0-W4.0-P0.50-TL-EP2.8 | U4, U6, U8, U10 |
| 1 | INA186A3IDCKR Texas Instruments | SOT-363_SC-70-6 | U12 |
| 1 | LMR54406DBVR TI(德州仪器) | SOT-23-6_L2.9-W1.6-P0.95-LS2.8-BR | U13 |
| 1 | FTC160808S4R7MBCA | IND-SMD_L1.6-W0.8_FTC160865SR47MBCA | U14 |
| 1 | TLV76733DRVR Texas Instruments | WSON-6_L2.0-W2.0-P0.65-TL-EP | U15 |
| 24 | SP40N01GHNK C22385416 | PDFN-8L_L6.0-W5.0-P1.27 | Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8 +16 |
| 1 | SM08B-SRSS-TB(LF)(SN) SM08B-SRSS-TB | JST_SM08B-SRSS-TB | J1 |
| 2 | ASR-S-3-0.2F 0.2mR | R_2512_6332Metric | Rsense1, Rsense2 |
| 3 | SMBJ24A | SMB_L4.5-W3.7-LS5.4-RD | D1, D2, D3 |
| 3 | CL31B106KBHNNNE 10uF | C_1206_3216Metric | C2, C3, C6 |
| 2 | CL05A226MQ5QUNC 22uF | C_0402_1005Metric | C4, C51 |
| 45 | 10uF | C_1206_3216Metric | C7, C8, C9, C13, C14, C15, C16, C17 +37 |
| 12 | CL05B104KB54PNC 100nF | C_0402_WIDE | C32, C33, C34, C35, C36, C37, C38, C39 +4 |
| 2 | CL10A226MO7JZNC 22uF | C_0603_1608Metric | C47, C86 |
| 22 | GRM033R6YA104KE14D 100nF | C_0201_0603Metric | C48, C49, C50, C52, C54, C55, C57, C58 +14 |
| 24 | RC0201FR-0710KL 10k | C_0201_0603Metric | R10, R12, R13, R15, R25, R27, R28, R30 +16 |
| 13 | 0201WMF1001TEE 1k | C_0201_0603Metric | R11, R14, R26, R29, R32, R35, R47, R50 +5 |
| 9 | RC0201FR-0710KL 10k | R_0201_0603Metric | R18, R19, R21, R22, R40, R41, R58, R59 +1 |
| 4 | AC0201FR-07220RL 220R | R_0201_0603Metric | R20, R39, R57, R87 |
Show 3 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 24 | 0201WMF150JTEE 15R | R_0201_0603Metric | R23, R24, R37, R38, R42, R43, R44, R45 +16 |
| 4 | RC0201FR-0710RL 10R | R_0201_0603Metric | R84, R85, R86, R88 |
| 1 | RTT011153FTH 115k | R_0201_0603Metric | R120 |
4in1 design files
The KiCad project lives in the OliviezGit/OpenESC-30x30 repository on GitHub; these links point at the commit this page was built from.
- Layouthardware/4in1.kicad_pcb
- Schematichardware/4in1.kicad_sch
4in1: common questions
How big is the 4in1 PCB?
The 4in1 measures 41.6 × 42.5 mm, has 6 copper layers and is 1.69 mm thick.
How many components are on the 4in1?
207 components, from 23 distinct parts. The full bill of materials is listed on this page.
Where can I download the 4in1 design files?
From the OliviezGit/OpenESC-30x30 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the 4in1 design in my own project?
Yes, under the terms of its CERN-OHL-S-2.0 license, which OliviezGit chose for the repository.
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