2 layers170.1 × 96.9 mm
SmartPrintCoreH7x
BoltzRnD/SmartPrintCoreH7x
STM32H7 based Robust and Open Source 3D Printer Mainboard
567 parts89
4 layers20.3 × 90 mm
- Size
- 20.3 × 90 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 109
- Nets
- 162
- Pads
- 524
- Tracks, vias
- 1,988, 233
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 13 Jan 2024
- Updated
- 28 Feb 2026
Overview
Hp45 is an open-source printed circuit board by BenChung, from the BenChung/hp45-controller repository on GitHub. It is a 4-layer board of 20.3 × 90 mm with 109 parts on 162 nets, routed with 1,988 tracks and 233 vias.
It is built around the RP2040, 74HC595 and HEF4094BT, with the TBD62783APG, CD40109BPWRE4 and TLV75733PDBV among its other parts. Its parts include 31 capacitors, 28 resistors, 17 ICs, 3 connectors and 2 diodes. It belongs with the RP2040 boards of this library.
Main components
6
RP2040
LQFN-56(7x7)12bit 133MHz 30 LQFN-56(7x7) Microcontrollers (MCU/MPU/SOC) ROHSRaspberry PiMicrocontrollers (MCU/MPU/SOC)
74HC595
SOP-16-40℃~+85℃ 1 100ns@5V,50pF 10MHz 2V~6V 74HC 8 Serial-to-Serial or Parallel Tri-State SOP-16 Shift Registers ROHSGRShift RegistersHEF4094BT
SOP-16SOP-16 Shift Registers ROHSMDDShift Registers
TBD62783APG
DIP-18-40℃~+85℃ 0.1mA 1uA 1uA 2V 30V 8 DIP-18 Darlington Transistor Arrays ROHSToshibaPower Distribution Switches
CD40109BPWRE4
TSSOP-16-55℃~+125℃ 1 3V~18V 3V~18V 4 Level translator Output enable high-impedance Tri-State Unidirectional TSSOP-16 Translators, Level Shifters ROHSTexas InstrumentsTranslators / Level Shifters
TLV75733PDBV
SOT-23-5-40℃~+125℃@(Tj) 1 1A 3.3V 40uA 46dB@(100kHz) 5.5V 650mV@(1A) 71.5uVrms Fixed Positive Under Voltage Lockout、Over Current Protection、Over Temperature Protection、Soft Start SOT-23-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTexas InstrumentsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
Parts
109| Qty | Value | Footprint | References |
|---|---|---|---|
| 22 | TestPoint | parts:TestPoint_THTPad_D1.0mm_Drill0.5mm | TP1, TP2, TP3, TP10, TP11, TP12, TP13, TP14, TP15, TP16, TP17, TP18, TP19, TP20, TP21, TP22 +6 |
| 11 | 100n | Capacitor_SMD:C_0402_1005Metric | C2, C4, C5, C6, C9, C10, C11, C12, C13, C17, C19 |
| 9 | 1uF | Capacitor_SMD:C_0603_1608Metric | C1, C3, C7, C8, C15, C18, C27, C30, C31 |
| 8 | 10 | Resistor_SMD:R_0402_1005Metric | R6, R21, R22, R23, R24, R25, R26, R27 |
| 7 | 1uF | Capacitor_SMD:C_0805_2012Metric | C21, C22, C23, C24, C32, C33, C34 |
| 6 | 10k | Resistor_SMD:R_0402_1005Metric | R5, R14, R15, R18, R19, R20 |
| 3 | 24k | Resistor_SMD:R_0402_1005Metric | R10, R12, R28 |
| 3 | 74HC595 | parts:RWN0016A | U4, U16, U17 |
| 3 | HEF4094BT | Package_SO:TSSOP-16_4.4x5mm_P0.65mm | U19, U20, U21 |
| 3 | TBD62783A | Package_SO:SSOP-18_4.4x6.5mm_P0.65mm | U5, U10, U11 |
| 2 | 0.1uF | Capacitor_SMD:C_0402_1005Metric | C25, C26 |
| 2 | 27R4 | Resistor_SMD:R_0402_1005Metric | R1, R2 |
| 2 | 5.11k | Resistor_SMD:R_0402_1005Metric | R3, R4 |
| 2 | INA281A2 | Package_TO_SOT_SMD:SOT-23-5 | U7, U8 |
| 2 | LED | LED_SMD:LED_0603_1608Metric | D1, D4 |
| 2 | MountingHole | MountingHole:MountingHole_2.5mm | H1, H2 |
| 2 | Q_Dual_NMOS_G1S2G2D2S1D1 | Package_TO_SOT_SMD:SOT-563 | Q1, Q4 |
| 1 | 0.1u | Capacitor_SMD:C_0402_1005Metric | C16 |
| 1 | 1.2k | Resistor_SMD:R_0402_1005Metric | R11 |
| 1 | 12V Power | Connector_JST:JST_SH_BM02B-SRSS-TB_1x02-1MP_P1.00mm_Vertical | J1 |
| 1 | 18k | Resistor_SMD:R_0402_1005Metric | R13 |
| 1 | 1k | Resistor_SMD:R_0402_1005Metric | R7 |
| 1 | 22uF | Capacitor_SMD:C_0805_2012Metric | C14 |
| 1 | 2uH | Inductor_SMD:L_0805_2012Metric | L1 |
| 1 | 33 | Resistor_SMD:R_0402_1005Metric | R16 |
| 1 | 50m | Resistor_SMD:R_0402_1005Metric | R9 |
| 1 | 51k | Resistor_SMD:R_0402_1005Metric | R17 |
| 1 | CD40109BPWR | parts:PW0016A_N | U18 |
| 1 | Control Header | Connector_JST:JST_SH_BM08B-SRSS-TB_1x08-1MP_P1.00mm_Vertical | J2 |
| 1 | Crystal_GND24 | Crystal:Crystal_SMD_2016-4Pin_2.0x1.6mm | Y1 |
| 1 | DNF | Resistor_SMD:R_0402_1005Metric | R8 |
| 1 | HP45_Conn | parts:HP45_SMD_connector | U9 |
| 1 | OPA170AIDRLT | Snapeda:DRL5 | U6 |
| 1 | RP2040 | Package_DFN_QFN:QFN-56-1EP_7x7mm_P0.4mm_EP3.2x3.2mm | U2 |
| 1 | TLV75733PDBV | Package_TO_SOT_SMD:SOT-23-5 | U1 |
| 1 | USB_C_Receptacle | Connector_USB:XUNPU TYPEC-501S-ACP24H104 | J3 |
| 1 | W25Q16JVUXIQ TR | Snapeda:USON-8_UX_2x3x0p6_WIN | U3 |
Questions
How big is the Hp45 PCB?
It measures 20.3 × 90 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Hp45 use?
109 parts, built around the RP2040, 74HC595, HEF4094BT and TBD62783APG. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Hp45 KiCad files?
From the BenChung/hp45-controller repository on GitHub, at the commit this page was made from: the board is hp45.kicad_pcb and its schematic battery.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Hp45 design in my own project?
Its repository states no licence, so its author keeps all rights: ask BenChung before reusing the design.
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