HARDWARE / PRODUCTAdded 10 Jul 2026

Motherboard Module (MBM)

Pumpkin, Inc.
Motherboard Module (MBM)

Pumpkin's flagship flight on-board computer carrier module: combined with a Pluggable Processor Module it forms a low-power 8- or 16-bit MCU/DSC command-and-data-handling (C&DH) module for CubeSats.

Typed specifications52 values

Discloses 6 of 13 fields engineers filter by in this category (category median 5).

Processor
No permanently soldered processor: socket for a Pluggable Processor Module (PPM); a wide range of processors (MSP430, 8051, AVR, PICmicro, ARM, x86, FPGA, ASIC) can be used
datasheet p.3
Mass
88 g
With PPM A1 mounted using abovementioned hardware · datasheet p.4 103 g With PPM A1 mounted using abovementioned hardware, 10mm CubeS…  |  103 g With PPM A1 mounted using abovementioned hardware, 10mm CubeS…  |  103 g with PPM A1, 10mm CubeSat Kit Bus Connector extenders and 15.…  |  77 g With standoff and fastener hardware to accept a short PPM (e.…  +3
Envelope (L×W×H)
96 (PCB width) x 90 (PCB length) x 1.6 (PCB thickness)
components up to 11.4 mm above PCB without PPM, 3.5 mm below PCB · datasheet p.4 90 mm PCB length  |  1.6 mm PCB thickness  |  96 mm PCB width  |  24.5 mm max · Height of components above PCB with MHX transceiver and 10mm …  +4
Mass storage
2 GB
MMC/SD card socket, 2GB and beyond · datasheet p.1 0.031 GB SD/MMC card  |  0.031 GB min · MMC/SD card socket for mass storage, 32MB to 2GB and beyond  |  2 GB SD/MMC card
Operating system
Salvo
compatible with Pumpkin's Salvo RTOS · datasheet p.1
Supply voltage
3.3 V
nom. · VCC_SD, SD Card interface · datasheet p.6 3.3 V SD Card interface  |  1.65 V min · I/O voltage for all on-board peripherals except RTC and SD Ca…  |  2.7 V min · RTC  |  5.5 V max · I/O voltage for all on-board peripherals except RTC and SD Ca…  +4
Data interface
I2C
I2C real-time clock · datasheet p.1 SPI SPI0 (SDO0/SDI0/SCK0) on CubeSat Kit Bus, part of the MB's SD…  |  USB USB 2.0 device interface for pre-launch communications, batte…  |  other USB 2.0 device interface; for pre-launch communications, batt…  |  UART UTX1/URX1 on CubeSat Kit Bus, MHX/USB interface  +4
Operating temperature
-40–85 °C
datasheet p.3 -40–85 °C TA, absolute maximum ratings
Board format
PC/104
PC/104-size footprint, with +5V and GND on PC/104 J1/J2 conne… · datasheet p.1 CubeSat Kit bus stackable 104-pin CubeSat Kit Bus connectors  |  CubeSat Kit bus
Flight software support
Pumpkin Salvo RTOS and HCC-Embedded EFFS-THIN SD Card FAT file system
datasheet p.1
Radiation and fault mitigation
latch-up protection (current limiting)
independent latchup (device overcurrent) protection on critic… · datasheet p.1
Connector
Stackable 104-pin CubeSat Kit Bus connectors; external power jack 5.5 mm outer / 2.1 mm internal diameter; MMC/SD card socket; USB device connector J3
datasheet p.4
Satellite class
CubeSat
CubeSat nanosatellite C&DH, TT&C, mass storage and battery / … · datasheet p.1
FPGA
FPGA
datasheet p.3
GPIO lines
48
datasheet p.9

Each value is typed with its unit and measurement condition and cites the datasheet page it was taken from. Nothing is guessed: a field that is absent here has not been published by the manufacturer. machine-extracted ✓ checked by NewSpace Market ✓ manufacturer confirmed by the manufacturer.

As published by the supplier10 lines, in the manufacturer's own wording
Price
$1,575.00
Hardware classification
Flight Hardware | Flight Qualified | Space Proven
Module height
0.600 in (15.24 mm)
Bus interface
CubeSat Kit Bus standard, 104-pin connector
Type options
Stackthrough, Non-Stackthrough
Revisions available
Revision E, Revision D
Onboard features
RBF switch, external +5Vdc power input, USB device port, battery-backed RTC subsystem, SPI-interface SD Card slot, extra power header, +5 V/GND for PC/104 connectors
Compatible processor modules
PPM A1, PPM A2, PPM A3, PPM B1, PPM D1, PPM D2, PPM E1
Compatible accessories
Base Plate Assembly, Base Plate Assembly for AntS Antenna, Chassis Walls, CubeSat Kit Pro Chassis Walls, RBF Bracket Kit, RBF Pin & Lanyard
Ordering restriction
A la carte orders require prior purchase of a complete CubeSat Kit

About

The Motherboard Module (MBM) is part of the CubeSat Kit nanosatellite architecture and is classified as flight hardware (blue) — Flight Hardware | Flight Qualified | Space Proven. By adding a Pluggable Processor Module (PPM) to the MBM, the user creates a low-power, 8- or 16-bit MCU/DSC command-and-data-handling (C&DH) module for a CubeSat. An MBM + PPM occupies a standard 0.600 in (15.24 mm) tall module slot, typically at the base of a Pumpkin CubeSat Kit structure.

The MBM routes the MCU/DSC’s I/O pins to the 104-pin CubeSat Kit bus, and provides an RBF (Remove Before Flight) switch, an external +5Vdc power input, a USB device port, a battery-backed RTC subsystem, an SPI-interface SD Card, an extra power header, and +5V and GND for use by PC/104 connectors.

The module is offered in Stackthrough and Non-Stackthrough variants (both available in Revision E and Revision D). Each unit includes one complete MotherBoard Module; the RBF switch is mounted but not wired to anything, and no SD Card or RTC backup battery (BR1225 size) are included. The non-stackthrough version is intended to be mounted on a CubeSat Kit Base Plate Assembly at one end of a CubeSat — the Base Plate Assembly’s metal provides the guide tube for the RBF pin and other features; for other locations the stackthrough version should be used, along with the RBF Bracket Kit.

The MBM is compatible with all CubeSats conforming to the CubeSat Kit Bus standard (104-pin connector), and specifically with the Pluggable Processor Modules PPM A1, A2, A3, B1, D1, D2, E1, as well as the Base Plate Assembly, Base Plate Assembly for AntS Antenna, Chassis Walls, CubeSat Kit Pro Chassis Walls, RBF Bracket Kit, and RBF Pin & Lanyard. Because schematics, software, test code and other documentation are only provided with a complete CubeSat Kit purchase, the MBM may only be ordered a la carte once a customer has purchased a complete CubeSat Kit; purchasing restrictions apply and a product request may be required.

Documentation

Need the full ICD, test reports or a specific revision? Ask the supplier directly.

Source: www.pumpkinspace.com ↗

The rest of the range from Pumpkin, Inc.

All 98 products →