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Pico pi rel

bristol-seds·pico-pi-rel·hw/pico-pi.kicad_pcb

Pico pi rel PCB layout, top view — open source Microchip SAM board by bristol-seds
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About the Pico pi rel PCB

Pico pi rel is an open source Microchip SAM PCB design by bristol-seds, published on GitHub under the MIT license. It is a 4-layer board measuring 65 × 30 mm, with 96 components from 46 distinct parts.

Its main chip is the ATSAMD20E17A-MU, from the Microchip SAM family. Other key parts include the ADM6823T, TPS73633, 74LVC1G32, RFM95_96_97_98W and TG-5006CJ. By type, the board carries 30 capacitors, 15 diodes, 15 resistors, 12 ICs, 10 connectors and 7 inductors.

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

From the project

The folder contains the schematic files for the pico-pi header board. This provides us with the all the additional hardware functionality we need for a balloon tracker.

The folder contains the schematic files for the pico-pi header board. This provides us with the all the additional hardware functionality we need for a balloon tracker.

868MHz RFM96W LoRa Radio u-Blox MAX-M8Q GPS 144MHz and 434MHz Radios Microcontroller to act as watchdog Input diodes for solar panels optional ADXL345 accelerometer

We include a GPS Front End and a Chip Antenna. This choice of antenna trades off sensitivity for low mass, while the Front End mantains sufficient sensitivity and noise rejection.

Pico pi rel, from the project README
From the project README

Main components on the Pico pi rel

ADM6823TTPS7363374LVC1G32RFM95_96_97_98WTG-5006CJBGM1034N7Si4460MAX-7QADXL34574LVC1G126ATSAMD20E17A-MU

Pico pi rel bill of materials (BOM)

96 components, 46 distinct parts.

QtyPartRefs
1
ADM6823T
IC1
2
TPS73633
IC2, IC9
1
74LVC1G32
IC3
1
RFM95_96_97_98W
IC4
1
TG-5006CJ
IC5
1
BGM1034N7
IC6
1
Si4460
IC7
1
MAX-7Q
IC8
1
ADXL345
IC10
1
74LVC1G126
IC11
1
ATSAMD20E17A-MU
U1
1
BC847CW
Q1
1
NX2301P
Q2
1
SWD
P1
1
Raspberry_Pi_+_Conn
P2
8
PAD
P3, P4, P5, P6, P7, P8, P9, P10
2
ANT
AE1, AE3
1
ANT
AE2
2
TESTPAD
TP1, TP2
1
LED-WARN
D1
Show 26 more
QtyPartRefs
1
LED-OK
D2
8
RB161M
D3, D4, D5, D6, D7, D8, D9, D10
1
5.1V
D11
1
LED-1
D12
1
LED-2
D13
2
TVS_DIODE
D14, D15
2
8.2nH
L1, L2
1
470nH
L3
1
56nH
L4
2
18nH
L5, L6
1
NOSTUFF
L7
6
1µF
C1, C4, C8, C15, C18, C24
12
100nF
C2, C3, C6, C7, C11, C12, C14, C22 +4
3
100pF
C5, C13, C16
1
2.2µF
C9
1
5F,5.4V
C10
2
15pF
C17, C20
2
8.2pF
C19, C21
1
10nF
C23
1
100µF
C25
1
10µF
C28
2
1MΩ
R1, R3
3
10kΩ
R2, R8, R14
6
330Ω
R4, R7, R10, R11, R12, R15
3
100kΩ
R5, R6, R9
1
33kΩ
R13

Pico pi rel design files

The KiCad project lives in the bristol-seds/pico-pi-rel repository on GitHub; these links point at the commit this page was built from.

Pico pi rel: common questions

What microcontroller does the Pico pi rel use?

The Pico pi rel is built around the ATSAMD20E17A-MU, from the Microchip SAM family.

How big is the Pico pi rel PCB?

The Pico pi rel measures 65 × 30 mm, has 4 copper layers and is 0.8 mm thick.

How many components are on the Pico pi rel?

96 components, from 46 distinct parts. The full bill of materials is listed on this page.

Where can I download the Pico pi rel design files?

From the bristol-seds/pico-pi-rel repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Pico pi rel design in my own project?

Yes, under the terms of its MIT license, which bristol-seds chose for the repository.

Can I test firmware for the Pico pi rel 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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