Huvud
About the Huvud PCB
Huvud is an open source STM32 PCB design by SamsonChau, published on GitHub. It is a 4-layer board measuring 42 × 42 mm, with 106 components from 61 distinct parts.
Its main chip is the STM32F103C8T6, from the STM32 family. Other key parts include the TPS54331DR, TMC2209-LA, TPS54202, XC6206PxxxMR and SN65HVD230. By type, the board carries 42 resistors, 36 capacitors, 9 connectors, 7 diodes, 6 ICs and 3 transistors.
From the project
my PCBS
Main components on the Huvud
Huvud bill of materials (BOM)
106 components, 61 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | TPS54331DR ADXL345 Texas Instruments | LGA-14_3x5mm_P0.8mm_LayoutBorder1x6y | U1 |
| 1 | TMC2209-LA TRINAMIC Motion Control GmbH | TMC2209-LA | U2 |
| 1 | TPS54202 | SOT-23-6 | U3 |
| 1 | XC6206PxxxMR | SOT-23 | U4 |
| 1 | STM32F103C8T6 ST Microelectronics | LQFP-48_7x7mm_P0.5mm | U5 |
| 1 | SN65HVD230 Texas Instruments | SOIC-8_3.9x4.9mm_P1.27mm | U6 |
| 2 | AO3400A Alpha & Omega Semicon (or similar) | SOT-23 | Q1, Q2 |
| 1 | AON7524 | DFN-8-1EP_3x3mm_P0.65mm_EP1.7x2.05mm | Q3 |
| 1 | 8MHZ 8Mhz Yangxing Tech (or similar) | Crystal_SMD_5032-2Pin_5.0x3.2mm | Y1 |
| 1 | PINHEADER_1X3_P2.54MM Conn_02x02_Odd_Even | Molex_Micro-Fit_3.0_43045-0400_2x02_P3.00mm_Horizontal | J1 |
| 1 | PINHEADER_2X4_P2.54MM DBG | PinHeader_2x03_P2.54mm_Vertical | J2 |
| 1 | JST_EH_1X2_P2.50MM_HORIZONTAL THERM | JST_PH_B3B-PH-K_1x03_P2.00mm_Vertical | J3 |
| 1 | FAN0 | JST_PH_B2B-PH-K_1x02_P2.00mm_Vertical | J4 |
| 1 | FAN1 | JST_PH_B2B-PH-K_1x02_P2.00mm_Vertical | J5 |
| 1 | Heater | TerminalBlock_TE_282834-2_1x02_P2.54mm_Horizontal | J6 |
| 1 | JST_EH_1X3_P2.50MM_HORIZONTAL Endstop | JST_PH_B5B-PH-K_1x05_P2.00mm_Vertical | J7 |
| 1 | JST_EH_1X4_P2.50MM_HORIZONTAL STEPPER | JST_XH_B4B-XH-A_1x04_P2.50mm_Vertical | J9 |
| 1 | USB_MICRO-B_MOLEX-105017-0001 USB_Micro-B_Molex-105017-0001 Molex | USB_Micro-B_Molex-105017-0001 | J12 |
| 4 | LEDGR | LED_0402_1005Metric | D1, D2, D3, D5 |
| 2 | LEDRED | LED_0603_1608Metric | D6, D8 |
Show 41 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | B5819W SM24CANB Changjiang Electronics Tech | SOT-23 | D7 |
| 1 | 22UH 22uH | L_0805_2012Metric | L1 |
| 1 | 10uH/max 145mOhm 2A | L_Sunlord_MWSA0518_5.4x5.2mm | L4 |
| 3 | 4.7UF 4.7uF | C_0402_1005Metric | C1, C4, C27 |
| 8 | 0.1UF 0.1uF | C_0402_1005Metric | C2, C10, C11, C17, C18, C19, C24, C28 |
| 3 | 100NF/50V 0.1uF/35V | C_0603_1608Metric | C3, C6, C7 |
| 1 | 22NF/50V 22nf/50V | C_0603_1608Metric | C5 |
| 1 | 100UF/35V 100uF/35V Lelon | CP_Elec_6.3x5.8 | C8 |
| 1 | 100NF/50V 0.1uF | C_0402_1005Metric | C9 |
| 2 | 22PF 22pF | C_0402_1005Metric | C12, C13 |
| 1 | 2.2NF 22uF | C_0805_2012Metric | C14 |
| 1 | 15PF 22uF | C_0805_2012Metric | C15 |
| 1 | 10NF 0.1uF/35V | C_0603_1608Metric | C16 |
| 1 | 10UF 0.1uF/35V | C_0603_1608Metric | C20 |
| 1 | 0.1UF 68pF | C_0402_1005Metric | C21 |
| 1 | 10UF 10uF/35V | C_1210_3225Metric | C22 |
| 1 | 10UF 4.7uF | C_0402_1005Metric | C23 |
| 4 | 0.1uF | C_0402_1005Metric | C25, C30, C31, C36 |
| 1 | 0.1UF 22pF | C_0402_1005Metric | C26 |
| 1 | 22pF | C_0402_1005Metric | C29 |
| 1 | 22uF | C_0805_2012Metric | C32 |
| 3 | 4.7uF | C_0402_1005Metric | C33, C34, C35 |
| 1 | 4.7K 10k | R_0402_1005Metric | R1 |
| 1 | 4.7K 2.2k | R_0402_1005Metric | R2 |
| 2 | 470 | R_0402_1005Metric | R3, R20 |
| 2 | 0.11 0.100 1% 1% 1/4W | R_1206_3216Metric | R4, R7 |
| 13 | 10K 10k | R_0402_1005Metric | R5, R8, R10, R11, R12, R13, R14, R15 +5 |
| 2 | 1k | R_0402_1005Metric | R6, R16 |
| 1 | 1M | R_0402_1005Metric | R9 |
| 3 | 20K 22k | R_0402_1005Metric | R17, R18, R24 |
| 4 | 22 | R_0402_1005Metric | R25, R26, R34, R35 |
| 1 | 1.5K 2.2k | R_0402_1005Metric | R27 |
| 1 | 10K 22 | R_0402_1005Metric | R28 |
| 1 | 18K 2.2k | R_0402_1005Metric | R29 |
| 1 | 3.3K 2.2k | R_0402_1005Metric | R31 |
| 1 | 160K 10k | R_0402_1005Metric | R32 |
| 1 | 30K 10k | R_0402_1005Metric | R33 |
| 4 | 10k | R_0402_1005Metric | R36, R37, R42, R43 |
| 1 | 120 | R_1206_3216Metric_Pad1.42x1.75mm_HandSolder | R38 |
| 1 | 100k | R_0402_1005Metric | R40 |
| 1 | 13.7k | R_0402_1005Metric | R41 |
Huvud design files
The KiCad project lives in the SamsonChau/PCB repository on GitHub; these links point at the commit this page was built from.
Huvud: common questions
What microcontroller does the Huvud use?
The Huvud is built around the STM32F103C8T6, from the STM32 family.
How big is the Huvud PCB?
The Huvud measures 42 × 42 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the Huvud?
106 components, from 61 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the Huvud design files?
From the SamsonChau/PCB repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the Huvud design in my own project?
The repository has no license, so all rights stay with SamsonChau. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Huvud without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.
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