Filament-Guillotine
About the Filament-Guillotine PCB
Filament-Guillotine is an open source STM32 PCB design by Zephino, published on GitHub under the CC-BY-SA-4.0 license. It is a board, with 82 components from 51 distinct parts.
Its main chip is the STM32F072C8T6, from the STM32 family. Other key parts include the AP63205WU-7, AMS1117-3.3, DRV8870DDAR, INA180A1IDBVR and MT9105ET. By type, the board carries 34 capacitors, 16 resistors, 10 diodes, 9 ICs, 7 connectors and 2 switches.
It belongs with the displays & leds and sensors designs in this gallery.
From the project
this is to cut the filament on any 3d printer
This KiCad 10 project contains the schematic for a compact 24 V electronic filament-cutter controller. Every purchased component has a PCB footprint and an LCSC Part field; JP1 is intentionally bare PCB copper.
- J1 accepts 24 V through JST-XH. D1 is an SMBJ24A input TVS. - U2 (AP63205WU-7) generates 5 V at up to 2 A; U3 (AMS1117-3.3) generates the digital 3.3 V rail. L2 filters a separate analog 3.3 V rail. - U1 is an STM32F072C8T6 in LQFP-48, with an 8 MHz crystal, reset and BOOT0 buttons, native USB DFU, and a dedicated SWD header. - U4 (DRV8870DDAR) drives the 24 V brushed motor. Its 50…
Main components on the Filament-Guillotine
Filament-Guillotine bill of materials (BOM)
82 components, 51 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | STM32F072C8T6 | LQFP-48_7x7mm_P0.5mm | U1 |
| 1 | AP63205WU-7 AP63205WU-7 (5V/2A) | TSOT-23-6 | U2 |
| 1 | AMS1117-3.3 | SOT-223-3_TabPin2 | U3 |
| 1 | DRV8870DDAR DRV8870DDAR 3.6A H-bridge | Texas_HTSOP-8-1EP_3.9x4.9mm_P1.27mm_EP2.95x4.9mm_Mask2.4x3.1mm_ThermalVias | U4 |
| 1 | INA180A1IDBVR INA180A1IDBVR (20V/V) | SOT-23-5 | U5 |
| 1 | MT9105ET | SOT-23W | U6 |
| 1 | USBLC6-2SC6 USBLC6-2SC6 USB ESD | SOT-23-6 | U7 |
| 1 | SN65HVD230DR SN65HVD230DR 3.3V CAN | SOIC-8_3.9x4.9mm_P1.27mm | U8 |
| 1 | SN74AHCT1G125DBVR | SOT-23-5 | U9 |
| 1 | X32258MSB4SI 8MHz 20pF | Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | 24V POWER (JST-XH) | JST_XH_B2B-XH-A_1x02_P2.50mm_Vertical | J1 |
| 1 | DC MOTOR (JST-XH) | JST_XH_B2B-XH-A_1x02_P2.50mm_Vertical | J2 |
| 1 | CAN (JST-XH) | JST_XH_B3B-XH-A_1x03_P2.50mm_Vertical | J3 |
| 1 | TYPE-C-31-M-12 USB-C PROGRAM/DFU | USB_C_Receptacle_HRO_TYPE-C-31-M-12 | J4 |
| 1 | B-2100S04P-A110 I2C SOLDERABLE HEADER | PinHeader_1x04_P2.54mm_Vertical | J5 |
| 1 | B-2100S06P-A110 SPI SOLDERABLE HEADER | PinHeader_1x06_P2.54mm_Vertical | J6 |
| 1 | SWD PROGRAM HEADER | PinHeader_1x05_P1.27mm_Vertical | J7 |
| 1 | SOLDER CLOSED = 120R CAN TERM | SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP1 |
| 1 | PTS810SJG250SMTRLFS RESET | SW_SPST_PTS810 | SW1 |
| 1 | PTS810SJG250SMTRLFS BOOT/DFU | SW_SPST_PTS810 | SW2 |
Show 31 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | SMBJ24A | D_SMB | D1 |
| 1 | NUP2105L NUP2105L CAN TVS | SOT-23 | D2 |
| 6 | WS2812B-2020 WS2812B-2020 EDGE | LED_WS2812B-2020_PLCC4_2.0x2.0mm | D3, D6, D7, D8, D9, D10 |
| 2 | WS2812B-2020 EDGE | LED_WS2812B-2020_PLCC4_2.0x2.0mm | D11, D12 |
| 1 | ZENR6028T4R7M-4.7UH 4.7uH >=3A | L_Taiyo-Yuden_NR-60xx | L1 |
| 1 | BLM18SG121TN1D 120R @ 100MHz ferrite | L_0603_1608Metric | L2 |
| 3 | 47uF 35V | CP_Elec_6.3x7.7 | C1, C20, C35 |
| 1 | 100nF BST | C_0402_1005Metric | C2 |
| 1 | 10uF 50V | C_1206_3216Metric | C3 |
| 4 | 22uF 10V | C_0805_2012Metric | C4, C5, C6, C7 |
| 3 | 100NF 100nF | C_0402_1005Metric | C8, C17, C22 |
| 1 | 1UF 1uF | C_0402_1005Metric | C9 |
| 15 | 100nF | C_0402_1005Metric | C10, C11, C12, C13, C14, C24, C25, C30 +7 |
| 2 | 33PF 33pF | C_0402_1005Metric | C15, C16 |
| 1 | 10nF | C_0402_1005Metric | C18 |
| 1 | 100nF 50V | C_0603_1608Metric | C19 |
| 2 | 100nF ADC filter | C_0402_1005Metric | C21, C23 |
| 2 | 10K 10k | R_0402_1005Metric | R1, R4 |
| 1 | 10k BOOT0 pull-down | R_0402_1005Metric | R2 |
| 1 | 20K 20k | R_0402_1005Metric | R3 |
| 1 | 0.05R 3W shunt | R_2512_6332Metric | R5 |
| 2 | 1k ADC filter | R_0402_1005Metric | R6, R7 |
| 1 | 5.1k CC1 | R_0402_1005Metric | R8 |
| 1 | 5.1k CC2 | R_0402_1005Metric | R9 |
| 1 | 22R USB D+ | R_0402_1005Metric | R10 |
| 1 | 22R USB D- | R_0402_1005Metric | R11 |
| 1 | 0R high-speed CAN | R_0402_1005Metric | R12 |
| 1 | 120R CAN TERM | R_1206_3216Metric | R13 |
| 1 | 33R NeoPixel data | R_0402_1005Metric | R14 |
| 1 | 4.7k I2C SCL pull-up | R_0402_1005Metric | R15 |
| 1 | 4.7k I2C SDA pull-up | R_0402_1005Metric | R16 |
Filament-Guillotine design files
The KiCad project lives in the Zephino/Filament-Guillotine repository on GitHub; these links point at the commit this page was built from.
Filament-Guillotine: common questions
What microcontroller does the Filament-Guillotine use?
The Filament-Guillotine is built around the STM32F072C8T6, from the STM32 family.
How many components are on the Filament-Guillotine?
82 components, from 51 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 Filament-Guillotine design files?
From the Zephino/Filament-Guillotine repository on GitHub, which has the schematic and the BOM; the links under Design files point to each one.
Can I use the Filament-Guillotine design in my own project?
Yes, under the terms of its CC-BY-SA-4.0 license, which Zephino chose for the repository.
Can I test firmware for the Filament-Guillotine 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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