4 layers200 × 100 mm
Heteromycin
hasenbanck/heteromycin
A 3D printer board using a powerfull STM32 MCU, TMC5160/TMC2160 driver and a Raspberry Pi or compatible SBC
373 parts40
2 layers124 × 116 mm
Huffboard
heyspacebuck/huffboard8A carrier board for a Raspberry Pi 4 running Huffbox controls. Drives relays and a SPI bus.
- Size
- 124 × 116 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 77
- Nets
- 57
- Pads
- 219
- Tracks, vias
- 374, 14
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 11 May 2024
- Updated
- 14 May 2024
Overview
Huffboard is an open-source printed circuit board by heyspacebuck, from the heyspacebuck/huffboard repository on GitHub. It is a 2-layer board of 124 × 116 mm with 77 parts on 57 nets, routed with 374 tracks and 14 vias.
It is built around the DMG2305UX and DMMT5401. Its parts include 14 resistors, 9 connectors, 6 transistors, 4 diodes and 4 switches.
Main components
2README
README.mdHuffboard
A board for the Huffbox
Learn about the Huffbox HERE!
This is a first attempt at improving the connections between the control device--a Raspberry Pi 4--and peripherals using the Pi's GPIO (electromagnets, fans, lights, LED matrix). It was designed to be easy to assemble using JLCPCB's assembly service. If you want to order a board through JLC's assembly service, you will need the files found in the jlcpcb/production_files directory.
Software necessary to inspect the design files
- KiCad 8 or a later version compatible with KiCad 8 projects
- To look at the JLCPCB assembly parts used, it helps to have the KiCad JLCPCB Tools plugin by Bouni
Known issues
- Power has to be supplied to the Pi using its regular power cable. I had hoped to power it through the Huffboard, but the Raspberry Pi Foundation's guidelines on powering a Pi via a hat are literally sketchy, and their recommended parts don't provide enough power to keep the Pi on.
- I don't like how the relays work or the 0Ω resistors being used as configuration pins. Going to change that in the next revision.
Schematic
A PDF of the schematic can be found here.
Parts
77| Qty | Value | Footprint | References |
|---|---|---|---|
| 23 | TestPoint_Small | huffboard:simple_testpoint_pinout | TP1, TP2, TP10, TP11, TP12, TP13, TP14, TP15, TP16, TP17, TP18, TP19, TP20, TP21, TP22, TP23 +7 |
| 8 | 0Ω | Resistor_SMD:R_1206_3216Metric | R7, R8, R9, R10, R11, R12, R13, R14 |
| 4 | 1kΩ | Resistor_SMD:R_0603_1608Metric | R1, R4, R5, R6 |
| 4 | Anchor_Mounting_Hole | MountingHole:MountingHole_3.2mm_M3_Pad_Via | H9, H10, H11, H12 |
| 4 | D | Diode_SMD:D_SOD-123F | D1, D2, D3, D4 |
| 4 | MountingHole | huffboard:SMTSO2545CTJ | H1, H2, H3, H4 |
| 4 | MountingHole | MountingHole:MountingHole_3.2mm_M3 | H5, H6, H7, H8 |
| 4 | Q_NPN_BEC | Package_TO_SOT_SMD:SOT-23 | Q1, Q4, Q5, Q6 |
| 4 | SANYOU_SRD_Form_C | Relay_THT:Relay_SPDT_SANYOU_SRD_Series_Form_C | K1, K2, K3, K4 |
| 4 | Screw_Terminal_01x02 | TerminalBlock_Phoenix:TerminalBlock_Phoenix_MKDS-1,5-2-5.08_1x02_P5.08mm_Horizontal | J3, J4, J5, J6 |
| 1 | 100μF | Capacitor_SMD:CP_Elec_6.3x7.7 | C1 |
| 1 | 10kΩ | Resistor_SMD:R_0603_1608Metric | R2 |
| 1 | 1μF | Capacitor_SMD:C_0603_1608Metric | C2 |
| 1 | 220μF | Capacitor_SMD:CP_Elec_6.3x7.7 | C3 |
| 1 | 47kΩ | Resistor_SMD:R_0603_1608Metric | R3 |
| 1 | Conn_01x05 | Connector_JST:JST_PH_B5B-PH-K_1x05_P2.00mm_Vertical | J7 |
| 1 | Conn_01x06 | Connector_JST:JST_PH_B6B-PH-K_1x06_P2.00mm_Vertical | J8 |
| 1 | DMG2305UX | Package_TO_SOT_SMD:SOT-23 | Q2 |
| 1 | DMMT5401 | Package_TO_SOT_SMD:SOT-23-6 | Q3 |
| 1 | LOGO | LOGO | G*** |
| 1 | Pi Case Fan | Connector_PinSocket_2.54mm:PinSocket_1x02_P2.54mm_Vertical | J10 |
| 1 | Raspberry_Pi_2_3 | Connector_IDC:IDC-Header_2x20_P2.54mm_Vertical | J1 |
| 1 | Screw_Terminal_01x02 | huffboard:Terminal_Screw_7.62 | J2 |
| 1 | ~ | huffboard:TDK15-XXSXX-MODULE | U1 |
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Questions
How big is the Huffboard PCB?
It measures 124 × 116 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Huffboard use?
77 parts, built around the DMG2305UX and DMMT5401. 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 Huffboard KiCad files?
From the heyspacebuck/huffboard repository on GitHub, at the commit this page was made from: the board is huffboard.kicad_pcb and its schematic huffboard.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Huffboard design in my own project?
Its repository states no licence, so its author keeps all rights: ask heyspacebuck before reusing the design.