Cheetah-MX4-Mini
About the Cheetah-MX4-Mini PCB
Cheetah-MX4-Mini is an open source STM32 PCB design by KaiPereira, published on GitHub under the CERN-OHL-P-2.0 license. It is a 4-layer board measuring 81.6 × 88.8 mm, with 165 components from 46 distinct parts.
Its main chip is the STM32H743VIT6, from the STM32 family. Other key parts include the AP7361C, TMC Stepstick and AP63203WU. By type, the board carries 51 resistors, 45 capacitors, 37 connectors, 14 diodes, 7 ICs and 6 transistors.
It belongs with the robotics & motion and displays & leds designs in this gallery.
From the project
A powerful yet compact 3D printer motherboard that supports TMC stepsticks, fans, heaters, screens and thermistors
The Cheetah MX4 Mini is a fully open source, powerful, yet affordable 3D printer motherboard! At just 80x90mm wide, it's an extremely compact motherboard with many cool features! This is one of the first PCB's I've ever created, so it might have some flaws. ## Custom Features - 4 TMC stepstick drivers that support UART and SPI - Sensorless and endstop homing configured using jumpers - 3 Thermistor input connectors - Support for parallel and serial LCD's and TFT displays - 3 Fan output connectors - Support for the BLTouch Probe (servo and probe connectors too) - 2 High amperage heater outputs…
Main components on the Cheetah-MX4-Mini
Cheetah-MX4-Mini bill of materials (BOM)
165 components, 46 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | STM32H743VIT6 | LQFP-100_14x14mm_P0.5mm | U1 |
| 1 | AP7361C | SOT-223-3_TabPin2 | U2 |
| 4 | TMC Stepstick | TMC Stepstick | U4, U5, U6, U7 |
| 1 | AP63203WU | TSOT-23-6 | U8 |
| 1 | IRLML6402 | SOT-23 | Q1 |
| 3 | NMOS | SOT-23-3 | Q2, Q3, Q4 |
| 2 | Q_NMOS_GDS | TO-252-3_TabPin2 | Q5, Q7 |
| 1 | 25 MHz | Crystal_SMD_3225-4Pin_3.2x2.5mm | Y2 |
| 1 | Micro_SD_Card | microSD_HC_Hirose_DM3AT-SF-PEJM5 | J1 |
| 1 | Conn_ARM_JTAG_SWD_10 | PinHeader_2x05_P1.27mm_Vertical | J2 |
| 1 | USB_C_Receptacle_USB2.0_14P | USB_C_Receptacle_HRO_TYPE-C-31-M-12 | J3 |
| 4 | Conn_01x04 | JST_XH_B4B-XH-AM_1x04_P2.50mm_Vertical | J4, J18, J23, J28 |
| 4 | Conn_01x04 | PinHeader_1x04_P2.00mm_Vertical | J5, J19, J24, J29 |
| 6 | Conn_01x02 | JST_PH_B2B-PH-K_1x02_P2.00mm_Vertical | J6, J13, J14, J32, J33, J34 |
| 4 | Conn_01x03 | JST_XH_B3B-XH-A_1x03_P2.50mm_Vertical | J7, J21, J26, J31 |
| 4 | Conn_02x04_Odd_Even | PinHeader_2x04_P2.00mm_Vertical | J8, J12, J22, J27 |
| 2 | Conn_01x10 | IDC-Header_2x05_P2.54mm_Vertical | J9, J10 |
| 5 | Conn_01x02 | PinHeader_1x02_P2.54mm_Vertical | J11, J16, J20, J25, J30 |
| 1 | Conn_01x03 | PinHeader_1x03_P2.54mm_Vertical | J15 |
| 1 | Conn_01x05 | JST_XH_B5B-XH-AM_1x05_P2.50mm_Vertical | J17 |
Show 26 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 3 | Conn_01x02 | TerminalBlock_Phoenix_MKDS-1,5-2-5.08_1x02_P5.08mm_Horizontal | J35, J36, J37 |
| 1 | Fuse | Fuse_Blade_Mini_directSolder | F1 |
| 2 | SW_Push | SW_Push_1P1T_NO_CK_KMR2 | SW1, SW2 |
| 1 | D_Schottky | D_SOD-123 | D1 |
| 1 | D_Schottky | D_SMA | D2 |
| 1 | RED | LED_0805_2012Metric | D3 |
| 6 | Green | LED_0805_2012Metric | D4, D7, D10, D12, D14, D16 |
| 5 | D | D_SOD-123 | D8, D9, D11, D13, D15 |
| 1 | 4.7µH | L_Wuerth_HCM-7070 | L3 |
| 2 | 2.2µF | C_0805_2012Metric | C1, C2 |
| 29 | 0.1µF | C_0603_1608Metric | C3, C5, C6, C7, C8, C9, C10, C14 +21 |
| 4 | 4.7µF | C_0805_2012Metric | C4, C16, C18, C19 |
| 2 | 18pF | C_0603_1608Metric | C11, C45 |
| 1 | 10µF | C_0805_2012Metric | C12 |
| 1 | 100µF | CP_Radial_D6.3mm_P2.50mm | C17 |
| 4 | 330µF | CP_Radial_D8.0mm_P3.50mm | C26, C31, C35, C39 |
| 2 | 22µF | C_0805_2012Metric | C50, C51 |
| 15 | 10K | R_0603_1608Metric | R1, R9, R10, R16, R17, R18, R21, R23 +7 |
| 6 | 4.7K | R_0603_1608Metric | R2, R34, R35, R38, R49, R52 |
| 5 | 47K | R_0603_1608Metric | R3, R4, R5, R6, R7 |
| 2 | 5.1K | R_0603_1608Metric | R8, R48 |
| 6 | 1K | R_0603_1608Metric | R11, R12, R41, R43, R45, R47 |
| 3 | 2.2K | R_0603_1608Metric | R19, R42, R44 |
| 4 | 10K | R_0805_2012Metric | R20, R22, R24, R27 |
| 5 | 100R | R_0603_1608Metric | R32, R37, R40, R51, R54 |
| 5 | 100K | R_0603_1608Metric | R33, R36, R39, R50, R53 |
Cheetah-MX4-Mini design files
The KiCad project lives in the KaiPereira/Cheetah-MX4-Mini repository on GitHub; these links point at the commit this page was built from.
- LayoutPCB/board.kicad_pcb
- SchematicPCB/board.kicad_sch
- BOMproduction/BOM.csv
Cheetah-MX4-Mini: common questions
What microcontroller does the Cheetah-MX4-Mini use?
The Cheetah-MX4-Mini is built around the STM32H743VIT6, from the STM32 family.
How big is the Cheetah-MX4-Mini PCB?
The Cheetah-MX4-Mini measures 81.6 × 88.8 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the Cheetah-MX4-Mini?
165 components, from 46 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 Cheetah-MX4-Mini design files?
From the KaiPereira/Cheetah-MX4-Mini repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the Cheetah-MX4-Mini design in my own project?
Yes, under the terms of its CERN-OHL-P-2.0 license, which KaiPereira chose for the repository.
Can I test firmware for the Cheetah-MX4-Mini 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.
Similar boards
STM32LumenPnP Motherboard
opulo-inc
149 × 95 mm296 parts4LCC-BY-SA-4.03.7k
STM32AxxSolder
AxxAxx
39 × 82.5 mm122 parts2LGPL-3.01.7k
STM32AIOC
skuep
21 × 31.5 mm47 parts2LMIT1.4k
STM32Ferris
pierrechevalier83
208.8 × 86.8 mm102 parts2LSHL-2.11.3k
STM32Module 16S
stuartpittaway
71.1 × 89.6 mm113 parts4LCC-BY-NC-4.01.1k
STM32Djinn
tzarc
192.3 × 150.5 mm216 parts2LCERN-OHL-S-2.0988