HardLabs

Femto satellite

spel-uchile·Femto-satellite·hw/PCB/Femtosat.kicad_pcb

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

About the Femto satellite PCB

Femto satellite 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 103.1 × 54 mm, with 38 components from 28 distinct parts.

Its main chip is the SAMD21E, from the Microchip SAM family. Other key parts include the AP7215-33YG-13, AV4524, LP38693MP-5.0, TRH-G2 and NRF24L01_Breakout. By type, the board carries 10 capacitors, 8 ICs, 6 resistors, 3 connectors, 2 diodes and 1 crystal.

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

From the project

Femto-satellite software and PCB design

This is a low-cost satellite of less than 100 grams. The goal is to deploy two femto-satellites from a 3U CubeSat to validate a localization system based on TDOA and AOA.

GPS localization S band communication 32-bit ARM Cortex M0+ microcontroller Magnetometer PNI RM3100 * Data logger using a microSD card

Update the software for the new hardware version Program a low-power mode

Main components on the Femto satellite

AP7215-33YG-13AV4524LP38693MP-5.0TRH-G2NRF24L01_BreakoutRM3100SAMD21EMCP9808-EMS

Femto satellite bill of materials (BOM)

38 components, 28 distinct parts.

QtyPartRefs
1
AP7215-33YG-13
U1
1
AV4524
U2
1
LP38693MP-5.0
U3
1
TRH-G2
U4
1
NRF24L01_Breakout
U5
1
RM3100
U6
1
SAMD21E
U7
1
MCP9808-EMS
U8
1
32.768kHz
Y1
1
USB_B_Micro
J1
1
Programmer
J2
1
Battery
J4
2
9pF
Cc1, Cc2
2
1uF
Cr1, Cr2
1
100 nF
Ct1
1
10uF
Ct2
1
Reset_push
SW1
1
PRTR5V0U2X
D1
1
LED
D2
1
Ferrite_Bead
L1
Show 8 more
QtyPartRefs
3
1uF
C1, C2, C4
2
10uF
C2a1, C3a1
4
100nF
C2b1, C3, C3b1, C6
1
4.7nF
C7
2
1k
R1, R6
1
10k
R2
1
1M
R3
2
330
R4, R5

Femto satellite design files

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

Femto satellite: common questions

What microcontroller does the Femto satellite use?

The Femto satellite is built around the SAMD21E, from the Microchip SAM family.

How big is the Femto satellite PCB?

The Femto satellite measures 103.1 × 54 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Femto satellite?

38 components, from 28 distinct parts. The full bill of materials is listed on this page.

Where can I download the Femto satellite design files?

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

Can I use the Femto satellite 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 Femto satellite 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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