2 layers100 × 100 mm
Hour meter board microfit can handroute
ilomon10/embedded-totalizer-hour-meter
ESP32 engine hour meter & totalizer: firmware, SensorFrame protocol, Node host tools, KiCad PCB and a Deno device simulator
152 parts
8 layers100 × 60 mm
YAMMU ControlBoard v05
Zergie/YAMMU107A Multi Material Unit (MMU) for eight filaments that can also function as a filament dryer and can keep it dry while printing. The design is heavily inspired by voron and their printers.
- Size
- 100 × 60 mm
- Copper layers
- 8
- Thickness
- 1.6 mm
- Parts
- 234
- Nets
- 144
- Pads
- 646
- Tracks, vias
- 1,395, 313
- Pours
- 39
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 27 Mar 2024
- Updated
- 9 Sep 2026
Overview
YAMMU ControlBoard v05 is an open-source printed circuit board by Zergie, from the Zergie/YAMMU repository on GitHub, published under the GPL-3.0 licence. It is an 8-layer board of 100 × 60 mm with 234 parts on 144 nets, routed with 1,395 tracks and 313 vias.
It is built around the SN74AHCT1G125DBVR(UMW), SN74AHCT1G86DBVR(UMW) and LM4040A30IDBZR, with the BAT54SW, SS34 and AO3400A among its other parts. Its parts include 69 resistors, 38 capacitors, 35 diodes, 22 connectors and 7 ICs. It belongs with the RP2040 boards of this library.
Main components
8
SN74AHCT1G125DBVR(UMW)
SOT-23-5-40℃~+125℃ 1 1 10uA 12ns@5V,50pF 2V 3.8V、4.4V 4.5V~5.5V 440mV 74AHCT 800mV 8mA 8mA SOT-23-5 Logic Gates ROHSUMWLogic GatesSN74AHCT1G86DBVR(UMW)
SOT-23-5-40℃~+125℃ 1 100mV、440mV 10ns@5V,50pF 10uA 2 2V 3.8V、4.4V 4.5V~5.5V 74AHCT 800mV 8mA 8mA XOR Gate SOT-23-5 Logic Gates ROHSUMWLogic Gates
LM4040A30IDBZR
SOT-23-40℃~+85℃ 100ppm/℃ 15mA 35uVrms 3V 47uA 47uA Fixed Parallel ±0.1% SOT-23 Voltage Reference ROHSTexas InstrumentsVoltage Reference
BAT54SW
SOT-3231 Pair Series Connection 200mA 2uA@25V 30V 600mA 800mV@100mA SOT-323 Schottky Diodes ROHSNexperiaSchottky Diodes
SS34
SMA(DO-214AC)-55℃~+125℃ 3A 40V 500uA@40V 550mV@3A Independent SMA(DO-214AC) Schottky Diodes ROHSMDDSchottky DiodesAO3400A
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
BZT52C4V7S
SOD-323Zener Diodeshongjiacheng
HY1904C2
PPAK-8L(5x6)-55℃~+150℃ 1 N-channel 195pF 2.391nF 3V 40V 48W 65A 7mΩ@4.5V N-Channel PPAK-8L(5x6) MOSFETs ROHSHUAYIMOSFETs
README
README.md
YAMMU is an open, Voron-inspired multi-material unit for FFF printers. It combines eight filament paths, enclosed heated storage, BLDC-driven loading, filament sensing, custom electronics, and Klipper-based control in one machine.
[!IMPORTANT] YAMMU is a work in progress. The current goal is reliable loading and unloading before or at the start of a print. Multi-color and multi-material printing are planned, but are not the present focus.
See the machine
| Complete enclosure | Twin spool carrier | Heated chamber | Custom electronics bay |
|---|---|---|---|
 |  |  |  |
One system, four jobs
- Store — eight spools live in two enclosed drawers built around 2020 extrusion.
- Dry — the sealed filament chamber is heated for dry storage while printing.
- Move — two BLDC-driven feeders load filament through short inlet paths and toward the extruder.
- Verify — switches at the splitter and toolhead let the control system confirm filament progress.
Built as open hardware
The repository contains the mechanical, electrical, firmware, and assembly material needed to follow the project—not just product renders.
| Area | What is included | Start here |
|---|---|---|
| Mechanical | STEP assembly, printable STLs, and panel DXFs | CAD · STLs · DXFs |
| Electronics | Main, connector, and sensor-board source and manufacturing files | PCB files - new version soon! |
| Firmware | RP2040 build notes and YAMMU configuration for Klipper / Happy Hare | Firmware guide - new version soon! |
| Assembly | Illustrated assembly manual | Open the PDF |
Start exploring
- Inspect the STEP assembly or browse the ready-to-print STLs.
- Read the assembly manual to understand the current mechanical build.
- (unfinished) Review the PCB feature set and manufacturing files.
- (unfinished) Follow the firmware guide for the current RP2040, Klipper, and Happy Hare setup.
Current roadmap
View v1.0 progress View v1.1 progress
Help build YAMMU
The project especially needs help with prototype testing, CAD, electronics, firmware, and documentation. If you can test the current iteration or improve one part of the system, open an issue or pull request—or join the YAMMU Discord.
Credits and related projects
YAMMU builds on ideas and parts from the wider open-source 3D-printing community, including Voron Trident, ERCF v2, and several community designs documented in the repository history. Review source licenses before redistributing derived parts.
Third-party parts and original licenses
- Voron Trident parts — GNU GPL v3
- ERCF v2 parts — GNU GPL v3
- Stronger Compact Spool Auto-Rewinder by rans_1668459 — GNU GPL v2
- Voron 2.4 front panel handle, hinge, and magnet latch by Jason_116929 — CC BY-SA
- Removable panel/door kit for Voron V2/Trident by Victor Mateus Oliveira — GNU GPL v3
- WAGO 221-415 extrusion mount by Artxime — GNU GPL v3
- LRS-200 DIN rail mount by CrazyIvan359 — Creative Commons 4.0
Other MMU projects worth exploring include ERCF v2, 8-Track, Primitive Infinite Spool System, TradRack, and Prusa MMU3.
License
Repository content is provided under the GNU General Public License v3.0. Third-party parts retain their original licenses.
Parts
234| Qty | Value | Footprint | References |
|---|---|---|---|
| 30 | 600Ohm 200mA | Inductor_SMD:L_0603_1608Metric | FB1, FB2, FB3, FB10, FB11, FB13, FB15, FB16, FB18, FB20, FB21, FB22, FB23, FB24, FB25, FB26 +14 |
| 21 | BAT54SW | Package_TO_SOT_SMD:SOT-323_SC-70 | D1, D2, D3, D11, D15, D17, D21, D22, D23, D24, D25, D31, D32, D33, D34, D35 +5 |
| 14 | 10µF 50V | Capacitor_SMD:C_1206_3216Metric | C1.1, C1.2, C1.3, C1.4, C1.5, C1.6, C1.7, C7, C8, C9, C10, C11, C12, C13 |
| 14 | 150K | Resistor_SMD:R_0603_1608Metric | R2, R3, R6, R7, R10, R15, R16, R19, R20, R23, R28, R30, R39, R41 |
| 12 | 220R | Resistor_SMD:R_0603_1608Metric | R8, R9, R11, R21, R22, R24, R32, R42, R47, R50, R57, R58 |
| 12 | 600Ohm 3A | Inductor_SMD:L_1206_3216Metric | FB12, FB14, FB17, FB19, FB28, FB29, FB30, FB31, FB32, FB33, FB35, FB37 |
| 9 | 47K | Resistor_SMD:R_0603_1608Metric | R3.1, R13, R26, R34, R44, R45, R48, R53, R56 |
| 8 | 100R | Resistor_SMD:R_0603_1608Metric | R12, R25, R33, R43, R52, R55, R60, R62 |
| 8 | 100nF | Capacitor_SMD:C_0603_1608Metric | C3.1, C16, C17, C20, C21, C22, C23, C24 |
| 7 | 10K | Resistor_SMD:R_0603_1608Metric | R4, R4.1, R5, R17, R18, R29, R40 |
| 6 | 0R | Resistor_SMD:R_0603_1608Metric | R1, R14, R35, R36, R37, R64 |
| 6 | Conn_01x03_Pin | LocalParts:PinHeader_1x03_P2.54mm_Vertical_HighDensity | J3, J6, J10, J13, J15, J17 |
| 5 | 4K7 | Resistor_SMD:R_0603_1608Metric | R46, R49, R59, R61, R63 |
| 5 | Conn_01x02 | Connector_JST:JST_XH_B2B-XH-A_1x02_P2.50mm_Vertical | J8, J12, J14, J16, J20 |
| 5 | Conn_01x03 | Connector_JST:JST_XH_B3B-XH-A_1x03_P2.50mm_Vertical | J1, J4, J7, J11, J23 |
| 5 | RED | LED_SMD:LED_0603_1608Metric | D12, D16, D18, D27, D28 |
| 4 | 100µF/6,3V | Capacitor_SMD:C_1206_3216Metric | C2.1, C2.2, C2.3, C2.4 |
| 4 | 10nF | Capacitor_SMD:C_0603_1608Metric | C2, C4, C5, C14 |
| 4 | 1K | Resistor_SMD:R_0603_1608Metric | R27, R31, R38, R54 |
| 4 | 2,2µF | Capacitor_SMD:C_1206_3216Metric | C6, C15, C18, C19 |
| 4 | M3 | MountingHole:MountingHole_3.2mm_M3_Pad | H1, H2, H3, H4 |
| 4 | SS34 | Diode_SMD:D_SMA | D14, D20, D26, D30 |
| 3 | 1N4148 | Diode_SMD:D_SOD-323 | D13, D19, D29 |
| 3 | AO3400A | Package_TO_SOT_SMD:SOT-23-3 | Q3, Q4, Q6 |
| 3 | Fiducial | Fiducial:Fiducial_1mm_Mask2mm | FID1, FID2, FID3 |
| 3 | Jumper_3_Open | LocalParts:PinHeader_1x03_P2.54mm_Vertical_HighDensity | JP2, JP3, JP4 |
| 2 | 1nF | Capacitor_SMD:C_0603_1608Metric | C1, C3 |
| 2 | 20K | Resistor_SMD:R_0603_1608Metric | R2.1, R51 |
| 2 | 2N7002 | Package_TO_SOT_SMD:SOT-23 | Q1, Q2 |
| 2 | BZT52C4V7S | Diode_SMD:D_SOD-323 | D5, D10 |
| 2 | Conn_01x04 | Connector_JST:JST_XH_B4B-XH-A_1x04_P2.50mm_Vertical | J21, J22 |
| 2 | Conn_01x05 | Connector_JST:JST_XH_B5B-XH-A_1x05_P2.50mm_Vertical | J2, J5 |
| 2 | SN74AHCT1G125DBVR | Package_TO_SOT_SMD:SOT-23-5 | U4, U5 |
| 2 | SN74AHCT1G86DBVR | Package_TO_SOT_SMD:SOT-23-5 | U1, U2 |
| 2 | Screw_Terminal_01x02 | LocalParts:JL301-50002U02 | J9, J19 |
| 1 | 105K | Resistor_SMD:R_0603_1608Metric | R1.1 |
| 1 | 10A | Fuse:Fuseholder_Blade_Mini_Keystone_3568 | F2 |
| 1 | 1kΩ@100MHz 2 6A 80V | LocalParts:ACM1211 | L2 |
| 1 | 3,3nF | Capacitor_SMD:C_0603_1608Metric | C5.1 |
| 1 | 38K3 | Resistor_SMD:R_0603_1608Metric | R5.1 |
| 1 | 3A | Fuse:Fuseholder_Blade_Mini_Keystone_3568 | F1 |
| 1 | 47pF | Capacitor_SMD:C_0603_1608Metric | C4.1 |
| 1 | 6,8µH | Inductor_SMD:L_APV_APH0530 | L1 |
| 1 | AP63356DV-7 | LocalParts:AP63356DV7 | IC1 |
| 1 | HY1904C2 | Package_DFN_QFN:PQFN-8-EP_6x5mm_P1.27mm_Generic | Q5 |
| 1 | LM4040A30IDBZR | Package_TO_SOT_SMD:SOT-23 | U3 |
| 1 | RaspberryPi_Pico | Module:RaspberryPi_Pico_SMD_HandSolder | IC2 |
| 1 | SW_MEC_5E | LocalParts:SW_TS-1187A-B-A-B | SW1 |
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Questions
How big is the YAMMU ControlBoard v05 PCB?
It measures 100 × 60 mm and has 8 copper layers, 1.6 mm thick.
What parts does the YAMMU ControlBoard v05 use?
234 parts, built around the SN74AHCT1G125DBVR(UMW), SN74AHCT1G86DBVR(UMW), LM4040A30IDBZR and BAT54SW. 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 YAMMU ControlBoard v05 KiCad files?
From the Zergie/YAMMU repository on GitHub, at the commit this page was made from: the board is PCB/ControlBoard/YAMMU_ControlBoard_v05.kicad_pcb and its schematic PCB/ControlBoard/AP6320x.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the YAMMU ControlBoard v05 design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).