6 layers150 × 100 mm
6 layers160 × 136 mm
Serie
npgo22/SerieThe board itself is based around an STM32H723, the fastest microcontroller supported by Klipper at the moment.
- Size
- 160 × 136 mm
- Copper layers
- 6
- Thickness
- 1.61 mm
- Parts
- 549
- Nets
- 658
- Pads
- 2,589
- Tracks, vias
- 193, 439
- Pours
- 236
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 13 Jan 2026
- Updated
- 29 Jun 2026
Overview
Serie is an open-source printed circuit board by npgo22, from the npgo22/Serie repository on GitHub. It is a 6-layer board of 160 × 136 mm with 549 parts on 658 nets, routed with 193 tracks and 439 vias.
It is built around the STM32H723ZGT6, TLV6742ID and ADS1115IDGS, with the AP74700QW6, AP64500SP and UCC27524DGN among its other parts. Its parts include 238 capacitors, 130 resistors, 51 connectors, 45 ICs and 27 diodes. It belongs with the STM32 boards of this library.
Main components
12
STM32H723ZGT6
LQFP-144(20x20)-40℃~+85℃ 1.71V~3.6V 114 12bit 12bit、16bit 1MB 32 Bit 550MHz 564KB ARM Cortex-M7 Built-in FLASH LQFP-144(20x20) Microcontrollers (MCU/MPU/SOC) ROHSSTMicroelectronicsMicrocontrollers (MCU/MPU/SOC)
TLV6742ID
SOIC-8-2.75V~-850mV、850mV~2.75V -40℃~+125℃ 0.5pA 1.7V~5.5V 10MHz 150uV 2 200nV/℃ 3.5nV/√Hz@1kHz 3pA 4.5V/us 68mA 87dB 990uA Enable/shutdown function、EMI filtering/RF suppression Rail-to-rail output SOIC-8 Operational Amplifier ROHSTexas InstrumentsOperational Amplifier
ADS1115IDGS
MSOP10Ultra-Small, Low-Power, 4 Channels 16-Bit Analog-to-Digital Converter with Internal ReferenceTexas InstrumentsUncategorised
AP74700QW6
SOT-26-40℃~+125℃ 1.3V~2.9V 1.4us 1.85A 11mA 450ns 4V~60V 600mV~1.45V 80uA High Side MOSFET SOT-26 Gate Drivers ROHSDiodes IncorporatedGate Drivers
AP64500SP
SO-8-EP-40℃~+85℃ 1 100kHz~2.2MHz 25uA 3.8V~40V 5A 800mV~39V Adjustable Buck Built-in Overcurrent Protection、Light load efficient mode、Cycle-by-cycle current limiting、Frequency synchronization、Hiccup current limiting、External compensation、EMI optimization (spread spectrum) Step-down type Yes SO-8-EP DC-DC Converters ROHSDiodes IncorporatedDC-DC Converters
UCC27524DGN
HVSSOP-8-EP-0.65mm-40℃~+140℃ 1.9V~2.3V 1V~1.4V 2 4.5V~18V 5A 5A 6ns 7ns IGBT、MOSFET Low Side Under Voltage Protection HVSSOP-8-EP-0.65mm Gate Drivers ROHSTexas InstrumentsGate Drivers
LTV-247
SOP-16-5.4mm-55℃~+110℃ 1.2V 100% 170mW 3.75kV 3us 4 400mV@2.4mA,8mA 50mA 50mA 600% 6V 80V DC Phototransistor SOP-16-5.4mm Transistor, Photovoltaic Output Optoisolators ROHSLite-OnTransistor, Photovoltaic Output Optoisolators
TMUX1101DBV
SOT-23-5-40℃~+125℃ 1 1.08V~5.5V 1.5pC 1.8Ω 17pF 1:1 300MHz Bidirectional analog channel、Fault protection、Level shifting SOT-23-5 Analog Switches, Multiplexers ROHSTexas InstrumentsAnalog Switches, Multiplexers
TMUX1108PW
TSSOP-16-175mil-2.5V~2.5V、1.08V~5.5V -40℃~+125℃ 1 19ns 2.5Ω 20ns 8:1 90MHz TSSOP-16-175mil Analog Switches, Multiplexers ROHSTexas InstrumentsAnalog Switches, MultiplexersUSBLC6-2SC6
SOT-23-60.35pF、0.8pF 100nA 150W@8/20us 15V 2 5V 6A@8/20us 6V ESD SOT-23-6 ESD and Surge Protection (TVS/ESD) ROHSUMWESD And Surge Protection (TVS/ESD)
BSC016N06NS
TDSON-8FL-55℃~+150℃ 1 N-channel 1.6mΩ@10V 100A 139W 3.3V 6.5nF 60V 96pF TDSON-8FL MOSFETs ROHSInfineon TechnologiesMOSFETs
AO3400A
SOT-23-55℃~+150℃ 1 N-channel 1.45V 1.4W 30V 48mΩ@2.5V 5.7A 50pF 630pF 75pF 7nC@10V N-Channel SOT-23 MOSFETs ROHSAlpha & Omega SemiconductorMOSFETs
README
README.mdSerie
Serie is a basic mainboard built to handle:
- Insanely high temperatures
- Insanely high speeds
- Several axis of movement
The board itself is based around an STM32H723, the fastest microcontroller supported by Klipper at the moment.
I/O
Currently, the following I/O is planned:
Temperature sensing
Four MAX31856 (for type-k thermocouples) modules will be integrated for temperature sensing to be used as follows:
- Hotend
- Bed
- Chamber
- Spare/standby
Several other standard thermistor inputs will be broken out as needed.
Motors
There will be 6x motors driven by TMC2241s. Each TMC2241 Support to klipper will need to be added to support this.
Isolated Inputs
There are 16 digitally isolated inputs.
Low Power Outputs
There are 6 outputs driven by small MOSFETs for outputs to other devices.
Buses
As many buses should be broken out as possible.
12V Outputs
There are four 12V outputs to drive peripherals such as fans.
USB
There will be at least 1 USB-C input.
Ethernet
As I have ethernet stuff on hand, this board will have ethernet.
Piezo Inputs
There will be a transimpedance amplifier followed by an instrumentation amplifier and an external comparator for piezo measurement. This is because the beacon probe cannot handle higher temperatures.
Endstops
The enstops will utilize optoisolated inputs, and will be 3 pins to accomodate hall effect sensors.
Power
As of right now, it is planned to require an external 48V power supply for the motors and a 12V power supply for the mainboard. This maintains galvanic isolation while providing decent protection against A small switching regulator will generate 5V (AP62300TWU-7 + ETQP4M3R3KVK) which will then be fed into a 2112K-3.3.
Heaters
Bed and chamber will be mains-powered, and motors will see 48V to 60V. and all the fans will maintain 12V, and the hotend heater cartridge will be able to handle 24V but will require a separate power supply just for it.
Switching
Mains powered items will be driven by an SSR, which necessitates the selection of a decent gate driver.
Motors
Motors will be powered by a separate 48V power supply as they are extremely noisy.
Board construction
Probably 4 layers. Don't really need more at this time.
Misc.
- Consider a standardized header for breaking out to other boards.
- Total BoM cost for 2x is expected to be in the neighborhood of $150 once it's all assembled.
Parts
549| Qty | Value | Footprint | References |
|---|---|---|---|
| 108 | 100nF | APRLPrints:C_0603 | C12, C13, C14, C104, C108, C109, C110, C116, C120, C121, C122, C128, C132, C133, C134, C140 +92 |
| 46 | 10k | APRLPrints:R_0603 | R13, R14, R15, R18, R19, R100, R101, R102, R107, R112, R116, R117, R121, R122, R126, R127 +30 |
| 40 | 470pF | APRLPrints:C_0603 | C100, C101, C102, C103, C112, C113, C114, C115, C124, C125, C126, C127, C136, C137, C138, C139 +24 |
| 38 | 4.7k | APRLPrints:R_0603 | R10, R16, R17, R21, R22, R103, R104, R105, R106, R108, R109, R110, R111, R118, R123, R128 +22 |
| 27 | , , , , , , , , , , , , , , , +11 | ||
| 20 | 22nF | APRLPrints:C_0603 | C106, C107, C118, C119, C130, C131, C142, C143, C173, C174, C203, C204, C215, C216, C227, C228 +4 |
| 20 | 22uF | APRLPrints:C_0805 | C29, C30, C31, C33, C34, C35, C39, C40, C41, C43, C44, C45, C48, C49, C50, C51 +4 |
| 17 | LED_Small | APRLPrints:LED_0603 | D2, D3, D4, D5, D6, D8, D10, D11, D12, D13, D14, D16, D18, D22, D24, D26 +1 |
| 16 | Conn_01x02 | libserie:JST_XH_B2B-XH-AM_1x02_P2.50mm_Vertical | J6, J22, J23, J32, J34, J35, J36, J37, J38, J39, J40, J41, J42, J43, J44, J45 |
| 14 | Conn_01x03 | libserie:JST_XH_B3B-XH-AM_1x03_P2.50mm_Vertical | J11, J12, J13, J14, J15, J16, J17, J18, J19, J20, J21, J49, J50, J51 |
| 14 | Conn_01x04 | libserie:JST_XH_B4B-XH-AM_1x04_P2.50mm_Vertical | J4, J5, J24, J25, J26, J27, J28, J29, J30, J31, J33, J46, J47, J48 |
| 12 | 100k | APRLPrints:R_0603 | R11, R36, R39, R42, R45, R50, R55, R60, R91, R120, R125, R130 |
| 12 | 100uF | Capacitor_SMD:CP_Elec_10x10.5 | C32, C42, C87, C99, C111, C123, C135, C147, C178, C208, C220, C232 |
| 12 | 2.2uF | APRLPrints:C_0603 | C3, C4, C93, C105, C117, C129, C141, C153, C184, C214, C226, C238 |
| 10 | 10R | APRLPrints:R_0603 | R35, R38, R41, R44, R49, R54, R59, R119, R124, R129 |
| 10 | 24k | APRLPrints:R_0603 | R75, R76, R77, R78, R79, R80, R95, R113, R114, R115 |
| 10 | TMC2241ATC | libserie:QFN-38_EP_5.63x7.6_Pitch0.5mm | U24, U25, U26, U27, U28, U29, U36, U43, U44, U45 |
| 7 | BSC016N06NS | Package_TO_SOT_SMD:TDSON-8-1 | Q1, Q2, Q3, Q4, Q5, Q6, Q7 |
| 6 | 10nF | APRLPrints:C_0603 | C8, C11, C78, C81, C157, C160 |
| 6 | AO3400A | Package_TO_SOT_SMD:SOT-23 | Q8, Q9, Q10, Q11, Q12, Q13 |
| 6 | ESD9B3.3ST5G | Diode_SMD:D_SOD-923 | D15, D17, D19, D23, D25, D27 |
| 4 | 100R | APRLPrints:R_0603 | R1, R2, R81, R82 |
| 4 | ?uF | APRLPrints:C_0603 | C15, C16, C164, C165 |
| 4 | MountingHole | MountingHole:MountingHole_3.2mm_M3 | H1, H2, H3, H4 |
| 4 | TLV6742 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U4, U5, U32, U33 |
| 3 | 100n | APRLPrints:C_0603 | C190, C196, C202 |
| 3 | 1uF | APRLPrints:C_0603 | C57, C73, C75 |
| 3 | ADS1115IDGS | Package_SO:TSSOP-10_3x3mm_P0.5mm | U37, U39, U42 |
| 3 | AP74700Q | libserie:SOT-6 | U12, U14, U17 |
| 3 | LM75B | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U38, U40, U41 |
| 2 | 100pF | APRLPrints:C_0603 | C17, C166 |
| 2 | 10M | APRLPrints:R_0603 | R12, R92 |
| 2 | 10pF | APRLPrints:C_0603 | C1, C2 |
| 2 | 10uF | APRLPrints:C_0603 | C10, C159 |
| 2 | 12 MHz | APRLPrints:3225-4P-L | Y2, Y3 |
| 2 | 1nF | APRLPrints:C_0603 | C37, C47 |
| 2 | 200k | APRLPrints:R_0603 | R26, R30 |
| 2 | 30.9k | APRLPrints:R_0603 | R27, R32 |
| 2 | 30pF | APRLPrints:C_0603 | C23, C172 |
| 2 | 4.02k | APRLPrints:R_0603 | R71, R74 |
| 2 | ADS1220xPW | Package_SO:TSSOP-16_4.4x5mm_P0.65mm | U2, U30 |
| 2 | AP64500 | libserie:Diodes_SO-8EP | U11, U13 |
| 2 | Conn_02x20_Counter_Clockwise | Connector_IDC:IDC-Header_2x20_P2.54mm_Vertical_SMD | J1, J2 |
| 2 | Conn_ARM_SWD_TagConnect_TC2030-NL | Connector:Tag-Connect_TC2030-IDC-NL_2x03_P1.27mm_Vertical | J3, J9 |
| 2 | LDC1612 | libserie:WSON-12-1EP_4x4mm_P0.5mm_EP2.6x3mm_ThermalVias | U6, U34 |
| 2 | LED | APRLPrints:LED_0603 | D20, D21 |
| 2 | LTV-247 | Package_SO:SOP-16_4.4x10.4mm_P1.27mm | U20, U21 |
| 2 | MAX31865xTP | libserie:TQFN-20-1EP_5x5mm_P0.65mm_EP3.25x3.25mm | U22, U23 |
| 2 | SKRPANE010 | APRLPrints:SKRPANE010 | SW1, SW2 |
| 2 | TMUX1101DBV | Package_TO_SOT_SMD:SOT-23-5 | U7, U35 |
| 2 | TMUX1108PW | Package_SO:TSSOP-16_4.4x5mm_P0.65mm | U3, U31 |
| 2 | UCC27524DGN | libserie:Texas_DGN0008G_VSSOP-8-1EP_3x3mm_P0.65mm_EP2x2.94mm_Mask1.846x2.15mm_ThermalVias | U18, U19 |
| 2 | USBLC6-2SC6 | Package_TO_SOT_SMD:SOT-23-6 | U8, U10 |
| 2 | USB_C_Receptacle_USB2.0_16P | libserie:USB_C_Receptacle_HRO_TYPE-C-31-M-12 | J7, J8 |
| 2 | XF-508P-B-B | Fuse:Fuseholder_Blade_Mini_Keystone_3568 | F2, F3 |
| 1 | 140k | APRLPrints:R_0603 | R24 |
| 1 | 25 MHz | APRLPrints:3225-4P-L | Y1 |
| 1 | 3.3 uH | Inductor_SMD:L_Changjiang_FXL0630 | L2 |
| 1 | 500mA | Fuse:Fuse_0805_2012Metric | F1 |
| 1 | 52.5k | APRLPrints:R_0603 | R29 |
| 1 | 6.8 uH | Inductor_SMD:L_Changjiang_FXL0630 | L1 |
| 1 | PMEG3010BER | Diode_SMD:Nexperia_CFP3_SOD-123W | D1 |
| 1 | SS54 | Diode_SMD:D_SMA | D7 |
| 1 | STM32F042F4Px | Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm | U9 |
| 1 | STM32H723ZGT6 | Package_QFP:LQFP-144_20x20mm_P0.5mm | U1 |
| 1 | Screw_Terminal_06x01x02 | TerminalBlock_Ningbo-Kagnex:TerminalBlock_Ningbo-Kagnex_HB9500M_1x12_P9.5mm | J10 |
| 1 | TLV77533 | Package_TO_SOT_SMD:SOT-23-5 | U15 |
| 1 | TPS7A20xxxDQN | Package_SON:Texas_X2SON-4_1x1mm_P0.65mm | U16 |
The 545 most common of 549 parts.
Questions
How big is the Serie PCB?
It measures 160 × 136 mm and has 6 copper layers, 1.61 mm thick.
What parts does the Serie use?
549 parts, built around the STM32H723ZGT6, TLV6742ID, ADS1115IDGS and AP74700QW6. 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 Serie KiCad files?
From the npgo22/Serie repository on GitHub, at the commit this page was made from: the board is Serie.kicad_pcb and its schematic Serie.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Serie design in my own project?
Its repository states no licence, so its author keeps all rights: ask npgo22 before reusing the design.
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