# Compact ESP32 Drone Motor Driver ## Description Compact 2-layer driver board for four coreless mini-drone motors using AO3400 MOSFETs, SS14 flyback diodes, JST-PH battery input, motor solder pads, and external ESP32 PWM wiring. ## Project Details - **Owner:** onepiecegod - **Created:** 6/25/2026 - **Last Updated:** 6/25/2026 - **Visibility:** Public ## Key Components ### D1 — [SS14](https://www.flux.ai/cherepanyadima/ss14~5b.md) - Role: Flyback Diode - Role Details: Cathode to VBAT, anode to motor low side for M1 - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: SS14 - Datasheet URL: https://datasheet.lcsc.com/lcsc/1912111437_Slkor-SLKORMICRO-Elec--SS14_C444721.pdf - Manufacturer Name: Slkor(SLKORMICRO Elec.) - Part Type: Diode **Pins:** - Anode [pin A] - Cathode [pin C] ### D2 — [SS14](https://www.flux.ai/cherepanyadima/ss14~5b.md) - Role: Flyback Diode - Part Type: Diode - Datasheet URL: https://datasheet.lcsc.com/lcsc/1912111437_Slkor-SLKORMICRO-Elec--SS14_C444721.pdf - Manufacturer Name: Slkor(SLKORMICRO Elec.) - Manufacturer Part Number: SS14 - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: Cathode to VBAT, anode to motor low side for M2 **Pins:** - Anode [pin A] - Cathode [pin C] ### D3 — [SS14](https://www.flux.ai/cherepanyadima/ss14~5b.md) - Part Type: Diode - Manufacturer Name: Slkor(SLKORMICRO Elec.) - Manufacturer Part Number: SS14 - Datasheet URL: https://datasheet.lcsc.com/lcsc/1912111437_Slkor-SLKORMICRO-Elec--SS14_C444721.pdf - Role: Flyback Diode - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: Cathode to VBAT, anode to motor low side for M3 **Pins:** - Anode [pin A] - Cathode [pin C] ### D4 — [SS14](https://www.flux.ai/cherepanyadima/ss14~5b.md) - Role: Flyback Diode - Role Details: Cathode to VBAT, anode to motor low side for M4 - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://datasheet.lcsc.com/lcsc/1912111437_Slkor-SLKORMICRO-Elec--SS14_C444721.pdf - Manufacturer Name: Slkor(SLKORMICRO Elec.) - Manufacturer Part Number: SS14 - Part Type: Diode **Pins:** - Anode [pin A] - Cathode [pin C] ### J1 — [B2B-PH-K-S](https://www.flux.ai/adrian95/b2b-ph-k-s~fx.md) - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector - Manufacturer Name: JST - Datasheet URL: https://www.jst-mfg.com/product/pdf/eng/ePH.pdf - Role Details: JST-PH 2-pin LiPo battery input: pin 1 VBAT, pin 2 GND - Role: Battery Connector - Package or Case Code: JST_B2B-PH-K-S - Manufacturer Part Number: B2B-PH-K-S **Pins:** - 1 [pin 1] - 2 [pin 2] ### J2 — [Pin Header 01x06 2.54mm PROGRAMMING CONNECTOR](https://www.flux.ai/zalak201285/pin-header-01x06-2p54mm-programming-connector~ji.md) - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: External ESP32 connection: GND, VBAT, PWM1, PWM2, PWM3, PWM4 - Role: ESP32 Wire Header - Part Type: Connector **Pins:** - JTCK [pin 2] - JTDI [pin 1] - JTDO [pin 3] - JTMS [pin 4] - NJTRST [pin 5] - RESET [pin 6] ### M1 — [Pin Header 01x02 2.54mm Vertical](https://www.flux.ai/jharwinbarrozo/generic-pin-header-01x02-2p54mm-vertical~4uy.md) - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector - Role Details: Direct solder pads for coreless motor 1: + to VBAT, - to MOSFET drain - Role: Motor Solder Pads **Pins:** - P1 [pin 1] - P2 [pin 2] ### M2 — [Pin Header 01x02 2.54mm Vertical](https://www.flux.ai/jharwinbarrozo/generic-pin-header-01x02-2p54mm-vertical~4uy.md) - Role: Motor Solder Pads - Role Details: Direct solder pads for coreless motor 2: + to VBAT, - to MOSFET drain - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector **Pins:** - P1 [pin 1] - P2 [pin 2] ### M3 — [Pin Header 01x02 2.54mm Vertical](https://www.flux.ai/jharwinbarrozo/generic-pin-header-01x02-2p54mm-vertical~4uy.md) - Part Type: Connector - License: https://creativecommons.org/licenses/by/4.0/ - Role: Motor Solder Pads - Role Details: Direct solder pads for coreless motor 3: + to VBAT, - to MOSFET drain **Pins:** - P1 [pin 1] - P2 [pin 2] ### M4 — [Pin Header 01x02 2.54mm Vertical](https://www.flux.ai/jharwinbarrozo/generic-pin-header-01x02-2p54mm-vertical~4uy.md) - Role: Motor Solder Pads - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector - Role Details: Direct solder pads for coreless motor 4: + to VBAT, - to MOSFET drain **Pins:** - P1 [pin 1] - P2 [pin 2] ### Q1 — [AO3400A](https://www.flux.ai/adrian95/ao3400a~ug9.md) - Role Details: AO3400 low-side switch for M1 coreless motor - Role: Motor Driver MOSFET - Part Type: Transistor - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/Alpha%20&%20Omega/AO3400A_ds.pdf - Manufacturer Name: Alpha & Omega Semiconductor Inc. - Manufacturer Part Number: AO3400A - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - D [pin 3] - G [pin 1] - S [pin 2] ### Q2 — [AO3400A](https://www.flux.ai/adrian95/ao3400a~ug9.md) - Role Details: AO3400 low-side switch for M2 coreless motor - License: https://creativecommons.org/licenses/by/4.0/ - Role: Motor Driver MOSFET - Part Type: Transistor - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/Alpha%20&%20Omega/AO3400A_ds.pdf - Manufacturer Name: Alpha & Omega Semiconductor Inc. - Manufacturer Part Number: AO3400A **Pins:** - D [pin 3] - G [pin 1] - S [pin 2] ### Q3 — [AO3400A](https://www.flux.ai/adrian95/ao3400a~ug9.md) - Role Details: AO3400 low-side switch for M3 coreless motor - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Transistor - Role: Motor Driver MOSFET - Manufacturer Name: Alpha & Omega Semiconductor Inc. - Manufacturer Part Number: AO3400A - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/Alpha%20&%20Omega/AO3400A_ds.pdf **Pins:** - D [pin 3] - G [pin 1] - S [pin 2] ### Q4 — [AO3400A](https://www.flux.ai/adrian95/ao3400a~ug9.md) - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: AO3400 low-side switch for M4 coreless motor - Part Type: Transistor - Role: Motor Driver MOSFET - Manufacturer Name: Alpha & Omega Semiconductor Inc. - Manufacturer Part Number: AO3400A - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/Alpha%20&%20Omega/AO3400A_ds.pdf **Pins:** - D [pin 3] - G [pin 1] - S [pin 2] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/onepiecegod/compact-esp32-drone-motor-driver~5g](https://www.flux.ai/onepiecegod/compact-esp32-drone-motor-driver~5g).* --- *Generated from [https://www.flux.ai/onepiecegod/compact-esp32-drone-motor-driver~5g](https://www.flux.ai/onepiecegod/compact-esp32-drone-motor-driver~5g)*