# ESP32 BMS ## Description Balancing board for zinc batteries controlled by ESP32 via IO expander. Information about the state of each battery will be uploaded to the cloud ## Project Details - **Owner:** aaron10103025 - **Created:** 4/17/2024 - **Last Updated:** 4/17/2024 - **Visibility:** Public ## Key Components ### BT1 — [Pin Header 01x02 2.54mm Vertical](https://www.flux.ai/jharwinbarrozo/pin-header-01x02-254mm-vertical~4uy.md) - Part Type: Connector - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - P1 [pin 1] - P2 [pin 2] ### BT10 — [Pin Header 01x02 2.54mm Vertical](https://www.flux.ai/jharwinbarrozo/pin-header-01x02-254mm-vertical~4uy.md) - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector **Pins:** - P1 [pin 1] - P2 [pin 2] ### BT2 — [Pin Header 01x02 2.54mm Vertical](https://www.flux.ai/jharwinbarrozo/pin-header-01x02-254mm-vertical~4uy.md) - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector **Pins:** - P1 [pin 1] - P2 [pin 2] ### BT3 — [Pin Header 01x02 2.54mm Vertical](https://www.flux.ai/jharwinbarrozo/pin-header-01x02-254mm-vertical~4uy.md) - Part Type: Connector - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - P1 [pin 1] - P2 [pin 2] ### BT4 — [Pin Header 01x02 2.54mm Vertical](https://www.flux.ai/jharwinbarrozo/pin-header-01x02-254mm-vertical~4uy.md) - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector **Pins:** - P1 [pin 1] - P2 [pin 2] ### BT5 — [Pin Header 01x02 2.54mm Vertical](https://www.flux.ai/jharwinbarrozo/pin-header-01x02-254mm-vertical~4uy.md) - Part Type: Connector - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - P1 [pin 1] - P2 [pin 2] ### BT6 — [Pin Header 01x02 2.54mm Vertical](https://www.flux.ai/jharwinbarrozo/pin-header-01x02-254mm-vertical~4uy.md) - Part Type: Connector - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - P1 [pin 1] - P2 [pin 2] ### BT7 — [Pin Header 01x02 2.54mm Vertical](https://www.flux.ai/jharwinbarrozo/pin-header-01x02-254mm-vertical~4uy.md) - Part Type: Connector - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - P1 [pin 1] - P2 [pin 2] ### BT8 — [Pin Header 01x02 2.54mm Vertical](https://www.flux.ai/jharwinbarrozo/pin-header-01x02-254mm-vertical~4uy.md) - Part Type: Connector - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - P1 [pin 1] - P2 [pin 2] ### BT9 — [Pin Header 01x02 2.54mm Vertical](https://www.flux.ai/jharwinbarrozo/pin-header-01x02-254mm-vertical~4uy.md) - Part Type: Connector - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - P1 [pin 1] - P2 [pin 2] ### D1 — [MM3Z3V6](https://www.flux.ai/vasyl/mm3z3v6~rur.md) - Part Type: Diode - Datasheet URL: https://diotec.com/tl_files/diotec/files/pdf/datasheets/mm3z2v4.pdf - Manufacturer Part Number: MM3Z3V6 - Manufacturer Name: Diotec Semiconductor **Pins:** - A - K ### D10 — [MM3Z3V6](https://www.flux.ai/vasyl/mm3z3v6~rur.md) - Manufacturer Name: Diotec Semiconductor - Manufacturer Part Number: MM3Z3V6 - Datasheet URL: https://diotec.com/tl_files/diotec/files/pdf/datasheets/mm3z2v4.pdf - Part Type: Diode **Pins:** - A - K ### D11 — [MM3Z3V6](https://www.flux.ai/vasyl/mm3z3v6~rur.md) - Manufacturer Name: Diotec Semiconductor - Manufacturer Part Number: MM3Z3V6 - Datasheet URL: https://diotec.com/tl_files/diotec/files/pdf/datasheets/mm3z2v4.pdf - Part Type: Diode **Pins:** - A - K ### D12 — [SS24](https://www.flux.ai/vasyl/ss24~dq.md) - Manufacturer Name: JUXING - Datasheet URL: https://datasheet.lcsc.com/lcsc/2206091716_JUXING-SS24_C3033280.pdf - Manufacturer Part Number: SS24 - Part Type: Diode **Pins:** - ~ - ~ ### D12 — [MM3Z3V6](https://www.flux.ai/vasyl/mm3z3v6~rur.md) - Datasheet URL: https://diotec.com/tl_files/diotec/files/pdf/datasheets/mm3z2v4.pdf - Part Type: Diode - Manufacturer Name: Diotec Semiconductor - Manufacturer Part Number: MM3Z3V6 **Pins:** - A - K ### D13 — [MM3Z3V6](https://www.flux.ai/vasyl/mm3z3v6~rur.md) - Part Type: Diode - Datasheet URL: https://diotec.com/tl_files/diotec/files/pdf/datasheets/mm3z2v4.pdf - Manufacturer Part Number: MM3Z3V6 - Manufacturer Name: Diotec Semiconductor **Pins:** - A - K ### D2 — [MM3Z3V6](https://www.flux.ai/vasyl/mm3z3v6~rur.md) - Datasheet URL: https://diotec.com/tl_files/diotec/files/pdf/datasheets/mm3z2v4.pdf - Part Type: Diode - Manufacturer Name: Diotec Semiconductor - Manufacturer Part Number: MM3Z3V6 **Pins:** - A - K ### D5 — [MM3Z3V6](https://www.flux.ai/vasyl/mm3z3v6~rur.md) - Manufacturer Name: Diotec Semiconductor - Manufacturer Part Number: MM3Z3V6 - Datasheet URL: https://diotec.com/tl_files/diotec/files/pdf/datasheets/mm3z2v4.pdf - Part Type: Diode **Pins:** - A - K ### D6 — [MM3Z3V6](https://www.flux.ai/vasyl/mm3z3v6~rur.md) - Part Type: Diode - Datasheet URL: https://diotec.com/tl_files/diotec/files/pdf/datasheets/mm3z2v4.pdf - Manufacturer Part Number: MM3Z3V6 - Manufacturer Name: Diotec Semiconductor **Pins:** - A - K ### D7 — [MM3Z3V6](https://www.flux.ai/vasyl/mm3z3v6~rur.md) - Datasheet URL: https://diotec.com/tl_files/diotec/files/pdf/datasheets/mm3z2v4.pdf - Part Type: Diode - Manufacturer Name: Diotec Semiconductor - Manufacturer Part Number: MM3Z3V6 **Pins:** - A - K ### D8 — [MM3Z3V6](https://www.flux.ai/vasyl/mm3z3v6~rur.md) - Datasheet URL: https://diotec.com/tl_files/diotec/files/pdf/datasheets/mm3z2v4.pdf - Part Type: Diode - Manufacturer Name: Diotec Semiconductor - Manufacturer Part Number: MM3Z3V6 **Pins:** - A - K ### IC1 — [BA7805FP-E2](https://www.flux.ai/vasyl/ba7805fp-e2~2f.md) - Part Type: Integrated Circuit - Datasheet URL: https://datasheet.lcsc.com/lcsc/1809301321_ROHM-Semicon-BA7805FP-E2_C79639.pdf - Manufacturer Part Number: BA7805FP-E2 - Manufacturer Name: ROHM Semicon **Pins:** - INPUT - N-C- - OUTPUT ### J3 — [Pin Header 01x02 2.54mm Vertical](https://www.flux.ai/jharwinbarrozo/pin-header-01x02-254mm-vertical~4uy.md) - Part Type: Connector - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - P1 [pin 1] - P2 [pin 2] ### Q1 — [AO3400A](https://www.flux.ai/ramprakashvishnoi8/ao3400a~2n.md) - Manufacturer Part Number: AO3400A - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/Alpha%20&%20Omega/AO3400A_ds.pdf - Part Type: Transistor - Manufacturer Name: Alpha & Omega Semiconductor Inc. **Pins:** - D - G - S ### Q10 — [AO3400A](https://www.flux.ai/ramprakashvishnoi8/ao3400a~2n.md) - Part Type: Transistor - Manufacturer Part Number: AO3400A - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/Alpha%20&%20Omega/AO3400A_ds.pdf - Manufacturer Name: Alpha & Omega Semiconductor Inc. **Pins:** - D - G - S ### Q11 — [AO3400A](https://www.flux.ai/ramprakashvishnoi8/ao3400a~2n.md) - Manufacturer Name: Alpha & Omega Semiconductor Inc. - Part Type: Transistor - Manufacturer Part Number: AO3400A - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/Alpha%20&%20Omega/AO3400A_ds.pdf **Pins:** - D - G - S ### Q12 — [AO3400A](https://www.flux.ai/ramprakashvishnoi8/ao3400a~2n.md) - 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 - Part Type: Transistor **Pins:** - D - G - S ### Q13 — [AO3400A](https://www.flux.ai/ramprakashvishnoi8/ao3400a~2n.md) - 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 - Part Type: Transistor **Pins:** - D - G - S ### Q14 — [AO3400A](https://www.flux.ai/ramprakashvishnoi8/ao3400a~2n.md) - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/Alpha%20&%20Omega/AO3400A_ds.pdf - Manufacturer Part Number: AO3400A - Part Type: Transistor - Manufacturer Name: Alpha & Omega Semiconductor Inc. **Pins:** - D - G - S ### Q15 — [AO3400A](https://www.flux.ai/ramprakashvishnoi8/ao3400a~2n.md) - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/Alpha%20&%20Omega/AO3400A_ds.pdf - Manufacturer Part Number: AO3400A - Part Type: Transistor - Manufacturer Name: Alpha & Omega Semiconductor Inc. **Pins:** - D - G - S ### Q16 — [AO3400A](https://www.flux.ai/ramprakashvishnoi8/ao3400a~2n.md) - Part Type: Transistor - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/Alpha%20&%20Omega/AO3400A_ds.pdf - Manufacturer Part Number: AO3400A - Manufacturer Name: Alpha & Omega Semiconductor Inc. **Pins:** - D - G - S ### Q17 — [AO3400A](https://www.flux.ai/ramprakashvishnoi8/ao3400a~2n.md) - Manufacturer Name: Alpha & Omega Semiconductor Inc. - Part Type: Transistor - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/Alpha%20&%20Omega/AO3400A_ds.pdf - Manufacturer Part Number: AO3400A **Pins:** - D - G - S ### Q18 — [AO3400A](https://www.flux.ai/ramprakashvishnoi8/ao3400a~2n.md) - Manufacturer Name: Alpha & Omega Semiconductor Inc. - Part Type: Transistor - Manufacturer Part Number: AO3400A - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/Alpha%20&%20Omega/AO3400A_ds.pdf **Pins:** - D - G - S ### Q19 — [AO3400A](https://www.flux.ai/ramprakashvishnoi8/ao3400a~2n.md) - Manufacturer Name: Alpha & Omega Semiconductor Inc. - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/Alpha%20&%20Omega/AO3400A_ds.pdf - Manufacturer Part Number: AO3400A - Part Type: Transistor **Pins:** - D - G - S ### Q2 — [AO3400A](https://www.flux.ai/ramprakashvishnoi8/ao3400a~2n.md) - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/Alpha%20&%20Omega/AO3400A_ds.pdf - Manufacturer Part Number: AO3400A - Part Type: Transistor - Manufacturer Name: Alpha & Omega Semiconductor Inc. **Pins:** - D - G - S ### Q20 — [AO3400A](https://www.flux.ai/ramprakashvishnoi8/ao3400a~2n.md) - 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 - Part Type: Transistor **Pins:** - D - G - S ### Q22 — [NCEP0114AS](https://www.flux.ai/vasyl/ncep0114as~dk.md) - Manufacturer Name: NCEP0114AS - Datasheet URL: https://datasheet.lcsc.com/szlcsc/Wuxi-NCE-Power-Semiconductor-NCEP0114AS_C190848.pdf - Part Type: Transistor - Manufacturer Part Number: Wuxi NCE Power Semiconductor **Pins:** - D - D - D - D - G - S - S - S ### Q23 — [NCEP0114AS](https://www.flux.ai/vasyl/ncep0114as~dk.md) - Datasheet URL: https://datasheet.lcsc.com/szlcsc/Wuxi-NCE-Power-Semiconductor-NCEP0114AS_C190848.pdf - Manufacturer Part Number: Wuxi NCE Power Semiconductor - Part Type: Transistor - Manufacturer Name: NCEP0114AS **Pins:** - D - D - D - D - G - S - S - S ### Q3 — [AO3400A](https://www.flux.ai/ramprakashvishnoi8/ao3400a~2n.md) - Manufacturer Name: Alpha & Omega Semiconductor Inc. - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/Alpha%20&%20Omega/AO3400A_ds.pdf - Manufacturer Part Number: AO3400A - Part Type: Transistor **Pins:** - D - G - S ### Q4 — [AO3400A](https://www.flux.ai/ramprakashvishnoi8/ao3400a~2n.md) - Manufacturer Name: Alpha & Omega Semiconductor Inc. - Part Type: Transistor - Manufacturer Part Number: AO3400A - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/Alpha%20&%20Omega/AO3400A_ds.pdf **Pins:** - D - G - S ### Q5 — [AO3400A](https://www.flux.ai/ramprakashvishnoi8/ao3400a~2n.md) - 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 - Part Type: Transistor **Pins:** - D - G - S ### Q6 — [AO3400A](https://www.flux.ai/ramprakashvishnoi8/ao3400a~2n.md) - Manufacturer Name: Alpha & Omega Semiconductor Inc. - Part Type: Transistor - Manufacturer Part Number: AO3400A - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/Alpha%20&%20Omega/AO3400A_ds.pdf **Pins:** - D - G - S ### Q7 — [AO3400A](https://www.flux.ai/ramprakashvishnoi8/ao3400a~2n.md) - Manufacturer Name: Alpha & Omega Semiconductor Inc. - Part Type: Transistor - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/Alpha%20&%20Omega/AO3400A_ds.pdf - Manufacturer Part Number: AO3400A **Pins:** - D - G - S ### Q8 — [AO3400A](https://www.flux.ai/ramprakashvishnoi8/ao3400a~2n.md) - Part Type: Transistor - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/Alpha%20&%20Omega/AO3400A_ds.pdf - Manufacturer Part Number: AO3400A - Manufacturer Name: Alpha & Omega Semiconductor Inc. **Pins:** - D - G - S ### Q9 — [AO3400A](https://www.flux.ai/ramprakashvishnoi8/ao3400a~2n.md) - Part Type: Transistor - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/Alpha%20&%20Omega/AO3400A_ds.pdf - Manufacturer Part Number: AO3400A - Manufacturer Name: Alpha & Omega Semiconductor Inc. **Pins:** - D - G - S ### U1 — [ESP32-DEVKIT-V1](https://www.flux.ai/vasyl/esp32-devkit-v1~zya.md) - Manufacturer Name: Espressif Systems - Part Type: Module - Manufacturer Part Number: ESP32-DEVKIT-V1 - Datasheet URL: https://www.snapeda.com/parts/ESP32-DEVKIT-V1/Do%20it/datasheet/ **Pins:** - 3V3 - D12 - D13 - D14 - D15 - D18 - D19 - D2 - D21 - D22 - D23 - D25 - D26 - D27 - D32 - D33 - D34 - D35 - D4 - D5 - EN - GND - GND__1 - RX0 - RX2 - TX0 - TX2 - VIN - VN - VP ### U2 — [PCA9635PW-118](https://www.flux.ai/adrian95/pca9635pw-118~fyo.md) - Manufacturer Name: NXP USA Inc. - Manufacturer Part Number: PCA9635PW-118 - Part Type: Integrated Circuit - Datasheet URL: https://datasheet.octopart.com/PCA9635PW%2C118-Philips-datasheet-10031555.pdf **Pins:** - ~OE - A0 - A1 - A2 - A3 - A4 - A5 - A6 - LED0 - LED1 - LED10 - LED11 - LED12 - LED13 - LED14 - LED15 - LED2 - LED3 - LED4 - LED5 - LED6 - LED7 - LED8 - LED9 - SCL - SDA - VDD - VSS *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/aaron10103025/esp32-bms~73](https://www.flux.ai/aaron10103025/esp32-bms~73).* --- *Generated from [https://www.flux.ai/aaron10103025/esp32-bms~73](https://www.flux.ai/aaron10103025/esp32-bms~73)*