Hubby
About the Hubby PCB
Hubby is an open source ESP32 PCB design by cr1tbit, published on GitHub. It is a 4-layer board measuring 100 × 77 mm, with 212 components from 64 distinct parts.
Its main chip is the ESP32-S3-WROOM-1, from the ESP32 family. Other key parts include the FE2.1, AZ1117-ADJ, USBLC6-2SC6, MCP3208 and MIC2405x. By type, the board carries 89 capacitors, 58 resistors, 26 ICs, 14 connectors, 6 jumpers and 6 inductors.
From the project
USB-C to everything adapter
Main components on the Hubby
Hubby bill of materials (BOM)
212 components, 64 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | FE2.1 | LQFP-48_7x7mm_P0.5mm | IC1 |
| 4 | AZ1117-ADJ | SOT-223-3_TabPin2 | U1, U12, U13, U14 |
| 5 | USBLC6-2SC6 | SOT-23-6 | U2, U21, U22, U23, U24 |
| 1 | MCP3208 | SOIC-16_3.9x9.9mm_P1.27mm | U3 |
| 1 | MIC2405x | QFN-28-3EP_5x6mm_MIC2045x | U4 |
| 1 | ESP32-S3-WROOM-1 | ESP32-S3-WROOM-1 | U5 |
| 7 | INA181 | SOT-23-6 | U6, U8, U9, U10, U15, U16, U25 |
| 1 | ADP1612 | MSOP-8_3x3mm_P0.65mm | U7 |
| 1 | MCP6001U | SOT-23-5 | U11 |
| 1 | 93LCxxAxxOT | SOT-23-6 | U17 |
| 1 | 24LC00 | SOIC-8_3.9x4.9mm_P1.27mm | U18 |
| 1 | FT2232HL | LQFP-64_10x10mm_P0.5mm | U19 |
| 1 | SN74LVC2T45DCUR | VSSOP-8_2.4x2.1mm_P0.5mm | U20 |
| 2 | AO3401A | SOT-23 | Q1, Q2 |
| 1 | 6MHZ 2520 | Crystal_SMD_2520-4Pin_2.5x2.0mm | Y1 |
| 1 | 12MHZ 2520 | Crystal_SMD_2520-4Pin_2.5x2.0mm | Y2 |
| 1 | Barrel_Jack_Switch | BarrelJack_CUI_PJ-102AH_Horizontal | J1 |
| 1 | USB_C_Receptacle_USB2.0 | USB_C_Receptacle_GCT_USB4085 | J2 |
| 1 | Conn_01x08 | PinSocket_1x08_P2.54mm_Vertical | J3 |
| 1 | STM_EXT_IO | PinHeader_2x06_P2.54mm_Horizontal | J4 |
Show 44 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | Conn_02x06_Odd_Even | PinHeader_2x06_P2.54mm_Horizontal | J5 |
| 1 | Screw_Terminal_01x12 | TerminalBlock_Phoenix_PT-1,5-12-5.0-H_1x12_P5.00mm_Horizontal | J6 |
| 1 | USBEXT | PinHeader_1x04_P2.00mm_Vertical | J7 |
| 1 | Conn_02x02_Odd_Even | PinHeader_2x02_P2.54mm_Vertical | J8 |
| 1 | USB1 | USB_A_Molex_67643_Horizontal | J9 |
| 3 | USB2 | USB_A_Molex_67643_Horizontal | J10, J11, J12 |
| 1 | UART_OUT | PinHeader_2x04_P2.54mm_Horizontal | J13 |
| 1 | JTAG_OUT | PinHeader_2x04_P2.54mm_Horizontal | J14 |
| 2 | 1A | R_1210_3225Metric_Pad1.30x2.65mm_HandSolder | F1, F2 |
| 1 | GND_DOMAIN_BRG | SolderJumper-2_P1.3mm_Bridged_Pad1.0x1.5mm | JP1 |
| 1 | 5V_FROM_USB_DIS | PinHeader_1x02_P2.54mm_Vertical | JP2 |
| 1 | VPROG_SET_SRC | PinHeader_1x03_P2.54mm_Vertical | JP3 |
| 1 | SWD_ENA | SolderJumper-2_P1.3mm_Bridged2Bar_RoundedPad1.0x1.5mm | JP4 |
| 1 | TDO_VSHIFT | PinHeader_1x03_P2.54mm_Vertical | JP5 |
| 1 | RXD_VSHIFT | PinHeader_1x03_P2.54mm_Vertical | JP6 |
| 1 | 10k | Potentiometer_Runtron_RM-065_Vertical | RV1 |
| 1 | SW_Push | SW_SPST_TL3342 | SW1 |
| 3 | D_Schottky | D_SMA | D1, D2, D3 |
| 2 | LED | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D4, D5 |
| 3 | L | L_1206_3216Metric_Pad1.22x1.90mm_HandSolder | L1, L5, L6 |
| 1 | 2.2u | L_Vishay_IHLP-4040 | L2 |
| 1 | L_Iron_Coupled | L_Wuerth_WE-DD-Typ-M-Typ-S | L3 |
| 1 | L_Iron | L_1206_3216Metric_Pad1.42x1.75mm_HandSolder | L4 |
| 32 | 10u | C_0805_2012Metric | C1, C8, C13, C15, C16, C21, C23, C25 +24 |
| 7 | 1n | C_0402_1005Metric | C2, C3, C4, C9, C10, C11, C12 |
| 4 | 22u | C_0805_2012Metric | C5, C6, C22, C24 |
| 1 | C | CP_Radial_D5.0mm_P2.50mm | C7 |
| 35 | 100n | C_0402_1005Metric | C14, C18, C19, C20, C26, C27, C29, C30 +27 |
| 1 | 2.2u | C_0805_2012Metric | C28 |
| 1 | 47u | C_0805_2012Metric | C41 |
| 1 | SUPERCAP | CP_Radial_D5.0mm_P2.50mm | C50 |
| 2 | 10u/16V | C_0805_2012Metric | C51, C53 |
| 1 | 220u | CP_Radial_D5.0mm_P2.50mm | C54 |
| 4 | 20p | C_0402_1005Metric | C57, C59, C60, C62 |
| 36 | 100k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R2, R4, R5, R8, R9, R10, R11 +28 |
| 1 | 470k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R3 |
| 5 | 470 | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R6, R7, R51, R52, R53 |
| 7 | 0.5R | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R23, R29, R30, R31, R41, R42, R56 |
| 2 | 2k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R26, R28 |
| 2 | 3k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R27, R38 |
| 1 | 2k2 | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R45 |
| 1 | 12k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R48 |
| 1 | 0R | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R54 |
| 2 | 22 | R_Array_Convex_4x0603 | RN1, RN2 |
Hubby design files
The KiCad project lives in the cr1tbit/superhubby repository on GitHub; these links point at the commit this page was built from.
- Layoutrev_0/hubby.kicad_pcb
- Schematicrev_0/hubby.kicad_sch
Hubby: common questions
What microcontroller does the Hubby use?
The Hubby is built around the ESP32-S3-WROOM-1, from the ESP32 family.
How big is the Hubby PCB?
The Hubby measures 100 × 77 mm, has 4 copper layers and is 1.025 mm thick.
How many components are on the Hubby?
212 components, from 64 distinct parts. The full bill of materials is listed on this page.
Where can I download the Hubby design files?
From the cr1tbit/superhubby repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Hubby design in my own project?
The repository has no license, so all rights stay with cr1tbit. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Hubby 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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