2 layers10.1 × 9.8 mm
2 layers51.5 × 89 mm
Source for LumenPnP Feeders
- Size
- 51.5 × 89 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 74
- Nets
- 72
- Pads
- 289
- Tracks, vias
- 723, 180
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 8 Jul 2022
- Updated
- 23 Sep 2026
Overview
Mobo is an open-source printed circuit board by opulo-inc, from the opulo-inc/feeder repository on GitHub. It is a 2-layer board of 51.5 × 89 mm with 74 parts on 72 nets, routed with 723 tracks and 180 vias.
It is built around the MAX3078EIN, DRV8837DSG and MC34063AD, with the MMSZ4684T1G-TP among its other parts. Its parts include 19 capacitors, 15 resistors, 9 connectors, 7 ICs and 5 diodes. It belongs with the STM32 boards of this library.
Main components
4
MAX3078EIN
DIP-8-40℃~+85℃ 1 1 16Mbps 256 3.15V~3.45V 400uA Enable shutdown、Thermal shutdown protection、Hot-swap protection Half-Duplex Transceiver ±16kV DIP-8 RS-485 / RS-422 ICs ROHSHGSEMIRS-485 / RS-422 ICs
DRV8837DSG
WSON-8-EP(2x2)-40℃~+85℃ 1.8V~7V 1.9A 120nA 280mΩ Yes WSON-8-EP(2x2) Brushed DC Motor Drivers ROHSTexas InstrumentsBrushed DC Motor Drivers
MC34063AD
SOIC-80℃~+70℃@(TA) 1 1.25V~40V 1.5A 100kHz 3V~40V Adjustable Boost、Buck Buck、Boost Built-in No SOIC-8 DC-DC Converters ROHSonsemiDC-DC Converters
MMSZ4684T1G-TP
SOD-123SOD-123 Zener Diodes ROHSTECH PUBLICZener Diodes
README
README.mdLumenPnP Feeders
The LumenPnP Feeders are open source pick and place feeders to aid in Mid-Scale Manufacturing.
LumenPnP Feeders are available for sale on the Opulo Website. If you build or buy one, please help the project by documenting bugs with a GitHub issue.
The LumenPnP Feeders run Photon, an open source firmware project for pick and place feeders. The popular pick and place control software OpenPnP has Photon support built in, so it's easy to get going with the LumenPnP feeders using your existing OpenPnP setup. These feeders are designed to work with the LumenPnP.
The development process is being cataloged in a series of videos. A playlist of these can be found here.
Documentation
Feeder user documentation can be found on the Opulo Docs Page. Open Hardware Assembly instructions can be found at ohai.opulo.io.
Community
Discussion about the project happens on the STR Discord server!
Parts
74| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | 100n | Capacitor_SMD:C_0805_2012Metric | C3, C4, C5, C7, C17, C18, C19, C20 |
| 3 | 10K | Resistor_SMD:R_0805_2012Metric | R4, R7, R17 |
| 3 | 4.7uF | Capacitor_SMD:C_0805_2012Metric | C8, C10, C11 |
| 3 | 470 | Resistor_SMD:R_0805_2012Metric | R2, R3, R5 |
| 3 | Fiducial | Fiducial:Fiducial_1mm_Mask2mm | FID1, FID2, FID3 |
| 2 | 10u | Capacitor_SMD:C_0805_2012Metric | C9, C13 |
| 2 | 15p | Capacitor_SMD:C_0805_2012Metric | C1, C2 |
| 2 | 1M | Resistor_SMD:R_0805_2012Metric | R18, R19 |
| 2 | 20R | Resistor_SMD:R_0805_2012Metric | R15, R16 |
| 2 | DRV8837 | Package_SON:WSON-8-1EP_2x2mm_P0.5mm_EP0.9x1.6mm | U7, U8 |
| 2 | LOGO | LOGO | G***, G*** |
| 2 | SW1 | feeder:1TS003B-1400-3500A-CT | J4, J7 |
| 2 | SWD_10 | Connector_PinHeader_1.27mm:PinHeader_2x05_P1.27mm_Vertical_SMD | J1, J9 |
| 1 | 0.33R | Resistor_SMD:R_0805_2012Metric | R13 |
| 1 | 100uF | Capacitor_SMD:C_Elec_6.3x7.7 | C12 |
| 1 | 15pF | Capacitor_SMD:C_0805_2012Metric | C6 |
| 1 | 1N5819 | Diode_SMD:D_SOD-123 | D6 |
| 1 | 1k | Resistor_SMD:R_0805_2012Metric | R1 |
| 1 | 220R | Resistor_SMD:R_0805_2012Metric | R14 |
| 1 | 220uH | Inductor_SMD:L_6.3x6.3_H3 | L1 |
| 1 | 39k | Resistor_SMD:R_0805_2012Metric | R9 |
| 1 | 470pF | Capacitor_SMD:C_0805_2012Metric | C14 |
| 1 | 470uF | Capacitor_SMD:C_Elec_6.3x7.7 | C16 |
| 1 | 5.6k | Resistor_SMD:R_0805_2012Metric | R6 |
| 1 | 8MHz | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm_HandSoldering | Y1 |
| 1 | AP1117-33 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U4 |
| 1 | DRIVE_MOTOR | Connector_Molex:Molex_PicoBlade_53261-0671_1x06-1MP_P1.25mm_Horizontal | J3 |
| 1 | LED_RGBA | index:MHS110FRGBCT | D1 |
| 1 | LED_RGBA_ALT | LED_SMD:LED_LiteOn_LTST-C19HE1WT | D3 |
| 1 | LOGO | index:goblin | G*** |
| 1 | LOGO | index:logo_mask | G*** |
| 1 | MAX3078E | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U6 |
| 1 | MC34063AD | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U5 |
| 1 | MMSZ4684T1G | Diode_SMD:D_SOD-123 | D9 |
| 1 | PEEL_MOTOR | Connector_Molex:Molex_PicoBlade_53261-0271_1x02-1MP_P1.25mm_Horizontal | J2 |
| 1 | SM712_SOT23 | Package_TO_SOT_SMD:SOT-23 | D2 |
| 1 | SPRING_FINGERS | feeder:AVX-9155-005-541 | J5 |
| 1 | STM32F031C6Tx | Package_QFP:LQFP-48_7x7mm_P0.5mm | U1 |
| 1 | STM32F031K6Ux | Package_DFN_QFN:QFN-32-1EP_5x5mm_P0.5mm_EP3.45x3.45mm | U2 |
| 1 | SW2 | feeder:1TS003B-1400-3500A-CT | J6 |
| 1 | TP_10V | TestPoint:TestPoint_Pad_D2.0mm | TP2 |
| 1 | TP_3V3 | TestPoint:TestPoint_Pad_D2.0mm | TP1 |
| 1 | TP_DRIVE_M1 | TestPoint:TestPoint_Pad_D2.0mm | TP3 |
| 1 | TP_DRIVE_M2 | TestPoint:TestPoint_Pad_D2.0mm | TP4 |
| 1 | TP_PEEL_M1 | TestPoint:TestPoint_Pad_D2.0mm | TP6 |
| 1 | TP_PEEL_M2 | TestPoint:TestPoint_Pad_D2.0mm | TP5 |
| 1 | TP_QUAD_A | TestPoint:TestPoint_Pad_D2.0mm | TP7 |
| 1 | TP_QUAD_B | TestPoint:TestPoint_Pad_D2.0mm | TP8 |
| 1 | USART1 | feeder:UART_FRICTION_FIT | J8 |
| 1 | pulsar | feeder:pulsar | G*** |
The 73 most common of 74 parts.
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Questions
How big is the Mobo PCB?
It measures 51.5 × 89 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Mobo use?
74 parts, built around the MAX3078EIN, DRV8837DSG, MC34063AD and MMSZ4684T1G-TP. 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 Mobo KiCad files?
From the opulo-inc/feeder repository on GitHub, at the commit this page was made from: the board is pcb/mobo/mobo.kicad_pcb and its schematic pcb/interposer/interposer.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Mobo design in my own project?
Its repository states no licence, so its author keeps all rights: ask opulo-inc before reusing the design.