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FOD

spel-uchile·FOD·hw/PCB/FOD.kicad_pcb

FOD PCB layout, top view — open source Microchip SAM board by spel-uchile

About the FOD PCB

FOD is an open source Microchip SAM PCB design by spel-uchile, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 82.5 × 29 mm, with 35 components from 28 distinct parts.

Its main chip is the C78624, from the Microchip SAM family. Other key parts include the C460367, NRF24L01_Breakout, AV4524 and DPL. By type, the board carries 8 capacitors, 6 resistors, 5 ICs, 4 connectors, 2 diodes and 1 transistor.

It belongs with the rf & radio and science & space designs in this gallery.

From the project

Femto-satellite Orbital Deployer (FOD)

This repository contains the PCB design and the source code of a femto-satellite orbital deployer or FOD. This device works by cutting a fishing line with Nichrome wire. The fishing line is normally pressing a hinge lever. When the line is cut, the hinge lever is released end the microcontroller can detect the release status.

The PCB has a transceiver (NRF24L01) to communicate with the femto-satellite once it is released. There is also a LED showing the release status, and a reset button. The energy and the comunication with the OBC is done through a molex cable with a picoblade connector.

FOD, from the project README
From the project README

Main components on the FOD

C78624C460367NRF24L01_BreakoutAV4524DPL

FOD bill of materials (BOM)

35 components, 28 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
C78624
SAMD21G
U1
1
C460367
AP7215-33YG-13
U2
1
NRF24L01_Breakout
U3
1
AV4524
U4
1
DPL
U6
1
C110920
PMV16XNR
Q1
1
32.768kHz
Y1
1
C2692071
USB_B_Micro
J1
1
Comm_port
J2
1
Jumper
J3
1
Programmer
J4
2
9pF
Cc1, Cc2
2
1uF
Cr1, Cr2
1
0.1uF
Ct1
1
C267437
10uF
Ct2
1
C231317
Reset_push
SW1
1
C12333
PRTR5V0U2X
D1
1
C397047
LED
D2
1
C76818
Ferrite_Bead
L1
2
10uF
C2a1, C3a1
Show 8 more
QtyPartRefs
4
100nF
C2b1, C3b1, C5, C7
1
1uF
C4
1
4.7nF
C6
1
1k
R1
1
C253330
10k
R2
1
C253332
1M
R3
2
330
R4, R6
1
0
R7

FOD design files

The KiCad project lives in the spel-uchile/FOD repository on GitHub; these links point at the commit this page was built from.

FOD: common questions

What microcontroller does the FOD use?

The FOD is built around the C78624, from the Microchip SAM family.

How big is the FOD PCB?

The FOD measures 82.5 × 29 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the FOD?

35 components, from 28 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 FOD design files?

From the spel-uchile/FOD repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the FOD design in my own project?

Yes, under the terms of its GPL-3.0 license, which spel-uchile chose for the repository.

Can I test firmware for the FOD without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug Microchip SAM firmware against it before you order a PCB.

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