Powertrain
About the Powertrain PCB
Powertrain is an open source ESP32 PCB design by byrantech, published on GitHub under the MIT license. It is a 4-layer board measuring 64 × 45.4 mm, with 171 components from 86 distinct parts.
Its main chip is the ESP32-S3-MINI-1, from the ESP32 family. Other key parts include the HUSB238, LTC2943, BQ7791501PWR, BQ25713RSNR and TVS2200DRV. By type, the board carries 70 resistors, 58 capacitors, 14 diodes, 8 transistors, 7 ICs and 5 connectors.
It belongs with the keyboards designs in this gallery.
From the project
anyon_e, a highly integrated, high end, open source laptop. Attempt the impossible.
Separate power system because integration is high risk.
The powertrain's VBUS/VBAT system needs to be swapped. Please read schematic for futher detail!
Main components on the Powertrain
Powertrain bill of materials (BOM)
171 components, 86 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | HUSB238 | DFN-10_L3.0-W3.0-P0.50-BL-EP2.5 | U1 |
| 1 | LTC2943 | DFN-8_DD_LIT | U2 |
| 1 | BQ7791501PWR | SOP65P640X120-24N | U3 |
| 1 | BQ25713RSNR | RSN0032B | U4 |
| 1 | ESP32-S3-MINI-1 | ESP32-S2-MINI-1 | U5 |
| 1 | TVS2200DRV | WSON-6-1EP_2x2mm_P0.65mm_EP1x1.6mm | U6 |
| 1 | TPS564257DRLR | SOT50P160X60-6N | U7 |
| 1 | SI7617DN-T1-GE3 | Vishay_PowerPAK_1212-8_Single | Q1 |
| 6 | CSD18534Q5A | TDSON-8-1 | Q2, Q3, Q4, Q5, Q6, Q7 |
| 1 | AON6411 | AO_DFN-8-1EP_5.55x5.2mm_P1.27mm_EP4.12x4.6mm | Q8 |
| 1 | USB-C Power + USB2.0 | USB_C_Receptacle_HRO_TYPE-C-31-M-12 | J1 |
| 1 | USB | FPC-SMD_6P-P0.50_XUNPU_FPC-05F-6PH20 | J2 |
| 1 | BATTERY OUT | Molex_PicoBlade_53048-1010_1x10_P1.25mm_Horizontal | J3 |
| 1 | BACKUP | PinHeader_1x02_P2.54mm_Vertical | J4 |
| 1 | I2C | PinHeader_1x02_P2.54mm_Vertical | J5 |
| 1 | Cell 1 | PinHeader_1x02_P2.54mm_Vertical | BT1 |
| 1 | Cell 2 | PinHeader_1x02_P2.54mm_Vertical | BT2 |
| 1 | Cell 3 | PinHeader_1x02_P2.54mm_Vertical | BT3 |
| 1 | Cell 4 | PinHeader_1x02_P2.54mm_Vertical | BT4 |
| 1 | RST | SW_Push_1P1T_XKB_TS-1187A | SW1 |
Show 66 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | BOOT | SW_Push_1P1T_XKB_TS-1187A | SW2 |
| 1 | 103AT 10k | PinHeader_1x02_P2.54mm_Vertical | TH1 |
| 1 | MMSZ5248B | D_SOD-123 | D1 |
| 1 | BAS316 | D_SOD-323 | D2 |
| 1 | SMBJ26A-13-F | D_SMB | D3 |
| 1 | LED1 | LED_0603_1608Metric | D4 |
| 1 | LED2 | LED_0603_1608Metric | D5 |
| 1 | LED3 | LED_0603_1608Metric | D6 |
| 1 | LED4 | LED_0603_1608Metric | D7 |
| 1 | LED5 | LED_0603_1608Metric | D8 |
| 1 | C4 LED | LED_0603_1608Metric | D9 |
| 1 | C3 LED | LED_0603_1608Metric | D10 |
| 1 | C2 LED | LED_0603_1608Metric | D11 |
| 1 | C1 LED | LED_0603_1608Metric | D12 |
| 1 | VDD LED | LED_0603_1608Metric | D13 |
| 1 | +3.3V LED | LED_0603_1608Metric | D14 |
| 1 | MWSA0503S-3R3MT | L_Sunlord_MWSA0503S | L1 |
| 1 | MWSA0603S-2R2MT | L_Sunlord_MWSA0603S | L2 |
| 13 | 1uF | C_0603_1608Metric | C1, C7, C11, C12, C13, C14, C15, C16 +5 |
| 19 | 10uF | C_0603_1608Metric | C2, C3, C8, C9, C24, C25, C28, C29 +11 |
| 2 | 100nF | C_0402_1005Metric | C4, C58 |
| 2 | 22uF | C_0603_1608Metric | C5, C6 |
| 2 | 100nF | C_0603_1608Metric | C10, C26 |
| 7 | 0.1uF | C_0603_1608Metric | C18, C19, C20, C21, C22, C55, C57 |
| 2 | 33nF | C_0603_1608Metric | C34, C35 |
| 1 | 470nF | C_0603_1608Metric | C36 |
| 1 | 10nF | C_0603_1608Metric | C37 |
| 2 | 47nF | C_0603_1608Metric | C38, C39 |
| 1 | 2.2uF | C_0603_1608Metric | C47 |
| 1 | 680pF | C_0603_1608Metric | C49 |
| 1 | 15pF | C_0603_1608Metric | C50 |
| 1 | 33pF | C_0603_1608Metric | C51 |
| 1 | 1800pF | C_0603_1608Metric | C52 |
| 2 | 100pF | C_0603_1608Metric | C53, C54 |
| 2 | 1M | R_0603_1608Metric | R1, R27 |
| 4 | 10R | R_0603_1608Metric | R2, R38, R39, R44 |
| 3 | 5.1k | R_0603_1608Metric | R3, R23, R24 |
| 1 | 49.9k | R_0603_1608Metric | R4 |
| 3 | 0R | R_0603_1608Metric | R7, R64, R65 |
| 1 | 2.2k | R_0603_1608Metric | R8 |
| 3 | 10mΩ SHUNT FMF25FPJR010-LH | R_Shunt_Vishay_WSK2512_6332Metric_T1.19mm | R9, R34, R37 |
| 5 | 33R | R_0603_1608Metric | R10, R15, R16, R17, R18 |
| 2 | 47k | R_0402_1005Metric | R11, R71 |
| 2 | 10k | R_0402_1005Metric | R12, R57 |
| 1 | 49.9k | R_0402_1005Metric | R13 |
| 1 | 510k | R_0402_1005Metric | R14 |
| 6 | 1k | R_0603_1608Metric | R19, R66, R67, R68, R69, R70 |
| 1 | 15mΩ SHUNT RLP25FEER015 | R_Shunt_Vishay_WSK2512_6332Metric_T1.19mm | R20 |
| 2 | 100R | R_0603_1608Metric | R21, R22 |
| 1 | 10M | R_0603_1608Metric | R25 |
| 1 | 3M | R_0603_1608Metric | R26 |
| 2 | 470k | R_0603_1608Metric | R28, R41 |
| 1 | 100k | R_0603_1608Metric | R29 |
| 15 | 10k | R_0603_1608Metric | R30, R31, R32, R47, R48, R49, R50, R51 +7 |
| 1 | 2.2R | R_0603_1608Metric | R33 |
| 2 | 5.1R | R_0603_1608Metric | R35, R36 |
| 1 | 130k | R_0603_1608Metric | R40 |
| 1 | 390k | R_0603_1608Metric | R42 |
| 1 | 220k | R_0603_1608Metric | R43 |
| 1 | 2M | R_0603_1608Metric | R45 |
| 1 | 300k | R_0603_1608Metric | R46 |
| 1 | 40.2k | R_0603_1608Metric | R53 |
| 1 | 200R | R_0603_1608Metric | R54 |
| 1 | 110k | R_0603_1608Metric | R55 |
| 1 | 27k | R_0603_1608Metric | R56 |
| 1 | 12k | R_0402_1005Metric | R72 |
Powertrain design files
The KiCad project lives in the byrantech/laptop repository on GitHub; these links point at the commit this page was built from.
- Layoutpower/power.kicad_pcb
- Schematicpower/power.kicad_sch
Powertrain: common questions
What microcontroller does the Powertrain use?
The Powertrain is built around the ESP32-S3-MINI-1, from the ESP32 family.
How big is the Powertrain PCB?
The Powertrain measures 64 × 45.4 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the Powertrain?
171 components, from 86 distinct parts. The full bill of materials is listed on this page.
Where can I download the Powertrain design files?
From the byrantech/laptop repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Powertrain design in my own project?
Yes, under the terms of its MIT license, which byrantech chose for the repository.
Can I test firmware for the Powertrain without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.
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