# Chakra Brain ## Description Rugged, serviceable 2-layer carrier board for a student robotics kit, using a socketed ESP32 DevKit, two socketed TB6612FNG motor-driver modules, a socketed buck converter, and keyed external connectors. ## Project Details - **Owner:** mysteryguy47 - **Created:** 8/25/2026 - **Last Updated:** 9/2/2026 - **Visibility:** Public - **Copies:** 1 ## Key Components ### D4 — P4KE10A - Functional Group: Power Input and Protection - Breakdown Voltage: 9.5-10.5V - Manufacturer Name: Littelfuse(美国力特) - Package or Case Code: DO-41_BD2.4-L4.7-P8.70-D0.9-FD - Part Type: TVS - JLCPCB Part Class: Extended Part - LCSC Part Number: C1978469 - Voltage Rating: 8.55V - Role Details: 10 V standoff-class TVS across BAT_SW; replaces 9.1 V part whose standoff was below 8.4 V pack maximum - Manufacturer Part Number: P4KE10A - Role: Clamping **Pins:** - A [pin 1] - K [pin 2] ### F1 — 178.6764.0001 - License: https://creativecommons.org/licenses/by/4.0/ - Role: Protection - Current Rating: 5A - Manufacturer Name: Littelfuse/Commercial Vehicle Products - Role Details: Populate 5 A MINI blade fuse; holder rated 22 A continuous/30 A max at 32 VDC - Functional Group: Power Input and Protection - Manufacturer Part Number: 178.6764.0001 - Datasheet URL: https://www.littelfuse.com/media?resourcetype=datasheets&itemid=3f05f551-560b-4050-ab12-a352111d7ba3&filename=littelfuse-fuse-holder-mini-fl1-datasheet.pdf - Part Type: Circuit Protection **Pins:** - 1 [pin 1] - 2 [pin 2] ### J1 — SSW-104-03-G-S - LCSC Part Number: C5908394 - Package or Case Code: HDR-TH_SSW-104-01-SM-S-LL - Role: Socketed Buck-Boost Module Interface - Functional Group: Buck Socket - Role Details: Socket for Pololu #5719 S9V11E2A; pin order 1 VOUT, 2 GND, 3 VIN, 4 EN; set output to 5.0 V before inserting ESP32 - Manufacturer Name: Samtec - Manufacturer Part Number: SSW-104-03-G-S socket + Pololu 5719 module - JLCPCB Part Class: Extended Part **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] ### J10 — 39281023 - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2408061058_MOLEX-39281023_C234186.pdf - LCSC Part Number: C234186 - Product Info Url: https://lcsc.com/product-detail/Wire-To-Board-Wire-To-Wire-Connector_MOLEX-39-28-1023_C234186.html - Package or Case Code: CONN-TH_P5.50_39281023 - Role: Battery Input - Role Details: Keyed locking 2-circuit input; current path sized for 5 A fuse - Functional Group: Power Input and Protection - JLCPCB Part Class: Extended Part - Manufacturer Name: MOLEX - Manufacturer Part Number: 39281023 - Part Type: Wire To Board / Wire To Wire Connector **Pins:** - 1 [pin 1] - 2 [pin 2] ### J11 — 39281023 - Manufacturer Name: MOLEX - Manufacturer Part Number: 39281023 - JLCPCB Part Class: Extended Part - Functional Group: Power Input and Protection - Part Type: Wire To Board / Wire To Wire Connector - Role Details: Both conductors carry fused battery current; use suitably rated panel switch and harness - Product Info Url: https://lcsc.com/product-detail/Wire-To-Board-Wire-To-Wire-Connector_MOLEX-39-28-1023_C234186.html - Package or Case Code: CONN-TH_P5.50_39281023 - LCSC Part Number: C234186 - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2408061058_MOLEX-39281023_C234186.pdf - Role: Master Switch Loop **Pins:** - 1 [pin 1] - 2 [pin 2] ### J2 — SSQ-108-03-G-S - Manufacturer Part Number: SSQ-108-03-X-S - Manufacturer Name: Samtec Inc. - Part Type: Connector - Datasheet URL: https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/6129/ssq-1xx-xx-xxx-x-xx-xxx-xx-x-mkt.pdf - Role Details: 1x8 2.54 mm through-hole socket; no jack, LEDs, shield, or magnetics - License: https://creativecommons.org/licenses/by/4.0/ - Role: Remote Breakout Header - Functional Group: Remote **Pins:** - 01 [pin 01] - 02 [pin 02] - 03 [pin 03] - 04 [pin 04] - 05 [pin 05] - 06 [pin 06] - 07 [pin 07] - 08 [pin 08] ### J3 — CB-6P6C-12MM-STAGGER - Functional Group: Motor Outputs - Manufacturer Name: Custom from user-supplied mechanical drawing - Role Details: 6P6C; contacts 3 and 4 carry motor; 1,2,5,6 intentionally NC; component-side numbering - Mount: Through Hole - Current Rating: 1.5A - Role: Motor Output M1 **Pins:** - CONTACT_1 [pin 1] - CONTACT_2 [pin 2] - CONTACT_3 [pin 3] - CONTACT_4 [pin 4] - CONTACT_5 [pin 5] - CONTACT_6 [pin 6] ### J4 — CB-6P6C-12MM-STAGGER - Functional Group: Motor Outputs - Mount: Through Hole - Manufacturer Name: Custom from user-supplied mechanical drawing - Role Details: 6P6C; contacts 3 and 4 carry motor; 1,2,5,6 intentionally NC; component-side numbering - Current Rating: 1.5A - Role: Motor Output M2 **Pins:** - CONTACT_1 [pin 1] - CONTACT_2 [pin 2] - CONTACT_3 [pin 3] - CONTACT_4 [pin 4] - CONTACT_5 [pin 5] - CONTACT_6 [pin 6] ### J5 — CB-6P6C-12MM-STAGGER - Role Details: 6P6C; contacts 3 and 4 carry motor; 1,2,5,6 intentionally NC; component-side numbering - Functional Group: Motor Outputs - Role: Motor Output M3 - Manufacturer Name: Custom from user-supplied mechanical drawing - Current Rating: 1.5A - Mount: Through Hole **Pins:** - CONTACT_1 [pin 1] - CONTACT_2 [pin 2] - CONTACT_3 [pin 3] - CONTACT_4 [pin 4] - CONTACT_5 [pin 5] - CONTACT_6 [pin 6] ### J6 — CB-6P6C-12MM-STAGGER - Functional Group: Motor Outputs - Role: Motor Output M4 - Role Details: 6P6C; contacts 3 and 4 carry motor; 1,2,5,6 intentionally NC; component-side numbering - Mount: Through Hole - Current Rating: 1.5A - Manufacturer Name: Custom from user-supplied mechanical drawing **Pins:** - CONTACT_1 [pin 1] - CONTACT_2 [pin 2] - CONTACT_3 [pin 3] - CONTACT_4 [pin 4] - CONTACT_5 [pin 5] - CONTACT_6 [pin 6] ### J7 — CB-6P6C-12MM-STAGGER - Functional Group: Sensors - Mount: Through Hole - Role Details: Contact 2 GND, 3 3V3, 4 GPIO36; 1,5,6 intentionally NC; component-side numbering - Manufacturer Name: Custom from user-supplied mechanical drawing - Role: Sensor Interface 1 **Pins:** - CONTACT_1 [pin 1] - CONTACT_2 [pin 2] - CONTACT_3 [pin 3] - CONTACT_4 [pin 4] - CONTACT_5 [pin 5] - CONTACT_6 [pin 6] ### J8 — CB-6P6C-12MM-STAGGER - Role: Sensor Interface 2 - Role Details: Contact 2 GND, 3 3V3, 4 GPIO39; 1,5,6 intentionally NC; component-side numbering - Manufacturer Name: Custom from user-supplied mechanical drawing - Functional Group: Sensors - Mount: Through Hole **Pins:** - CONTACT_1 [pin 1] - CONTACT_2 [pin 2] - CONTACT_3 [pin 3] - CONTACT_4 [pin 4] - CONTACT_5 [pin 5] - CONTACT_6 [pin 6] ### J9 — CB-6P6C-12MM-STAGGER - Role: Sensor Interface 3 - Role Details: Contact 2 GND, 3 3V3, 4 GPIO15; 1,5,6 intentionally NC; component-side numbering - Manufacturer Name: Custom from user-supplied mechanical drawing - Mount: Through Hole - Functional Group: Sensors **Pins:** - CONTACT_1 [pin 1] - CONTACT_2 [pin 2] - CONTACT_3 [pin 3] - CONTACT_4 [pin 4] - CONTACT_5 [pin 5] - CONTACT_6 [pin 6] ### Q1 — FQP47P06 - JLCPCB Part Class: Extended Part - Manufacturer Part Number: FQP47P06 - Role: Reverse Polarity Protection - Role Details: P-channel ideal-diode connection, drain toward fused battery, source toward switch loop - Product Info Url: https://lcsc.com/product-detail/MOSFET_ON-Semicon-ON-FQP47P06_C462765.html - Package or Case Code: TO-220F-3_L10.2-W4.9-P2.54-L - Manufacturer Name: onsemi(安森美) - LCSC Part Number: C462765 - Part Type: MOSFETs - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2210210100_onsemi-FQP47P06_C462765.pdf - Functional Group: Power Input and Protection **Pins:** - D [pin 2] - G [pin 1] - S [pin 3] ### U1 — ESP32-DEVKITC-VE - License: https://creativecommons.org/licenses/by/4.0/ - Package or Case Code: ESP32DEVKITCVE - Part Type: Development Boards - Functional Group: ESP32 Socket - Role: Socketed Controller Module - Role Details: Espressif ESP32-DEVKITC-VE, 38 pins; populate matching 2.54 mm female socket strips - Manufacturer Name: Espressif Systems - Manufacturer Part Number: ESP32-DEVKITC-VE - Datasheet URL: https://docs.espressif.com/projects/esp-idf/en/latest/esp32/hw-reference/esp32/get-started-devkitc.html - Digi-Key Part Number: 1965-ESP32-DEVKITC-VE-ND **Pins:** - 3V3 [pin 1] - 5V [pin 19] - CLK [pin 20] - CMD [pin 18] - D0 [pin 21] - D1 [pin 22] - D2 [pin 16] - D3 [pin 17] - EN [pin 2] - GND_1 [pin 14] - GND_2 [pin 32] - GND_3 [pin 38] - IO0 [pin 25] - IO12 [pin 13] - IO13 [pin 15] - IO14 [pin 12] - IO15 [pin 23] - IO16 [pin 27] - IO17 [pin 28] - IO18 [pin 30] - IO19 [pin 31] - IO2 [pin 24] - IO21 [pin 33] - IO22 [pin 36] - IO23 [pin 37] - IO25 [pin 9] - IO26 [pin 10] - IO27 [pin 11] - IO32 [pin 7] - IO33 [pin 8] - IO34 [pin 5] - IO35 [pin 6] - IO4 [pin 26] - IO5 [pin 29] - RX [pin 34] - TX [pin 35] - VN [pin 4] - VP [pin 3] ### U2 — TB6612FNG - Part Type: Module - Role Details: Pololu #713 TB6612FNG carrier, 1 A continuous per channel, 3 A peak; removable in 2x 1x8 sockets - Functional Group: Driver 1 - Manufacturer Name: Pololu - Manufacturer Part Number: TB6612FNG - Role: Socketed Motor Driver Module - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.pololu.com/product/713 **Pins:** - AIN1 [pin 14] - AIN2 [pin 15] - AO1 [pin 3] - AO2 [pin 4] - BIN1 [pin 12] - BIN2 [pin 11] - BO1 [pin 6] - BO2 [pin 5] - GND [pin 9] - GND [pin 1] - GND [pin 8] - PWMA [pin 16] - PWMB [pin 10] - STBY [pin 13] - VCC [pin 2] - VMOT [pin 7] ### U3 — TB6612FNG - Part Type: Module - Role: Socketed Motor Driver Module - Manufacturer Part Number: TB6612FNG - Manufacturer Name: Pololu - Functional Group: Driver 2 - Datasheet URL: https://www.pololu.com/product/713 - Role Details: Pololu #713; 1 A continuous per channel, 3 A short peak; removable in two 1x8 sockets - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - AIN1 [pin 14] - AIN2 [pin 15] - AO1 [pin 3] - AO2 [pin 4] - BIN1 [pin 12] - BIN2 [pin 11] - BO1 [pin 6] - BO2 [pin 5] - GND [pin 9] - GND [pin 1] - GND [pin 8] - PWMA [pin 16] - PWMB [pin 10] - STBY [pin 13] - VCC [pin 2] - VMOT [pin 7] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/mysteryguy47/chakra-brain~4c](https://www.flux.ai/mysteryguy47/chakra-brain~4c).* --- *Generated from [https://www.flux.ai/mysteryguy47/chakra-brain~4c](https://www.flux.ai/mysteryguy47/chakra-brain~4c)*