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Lorawan gps

robot-army·LoRaWAN_GPS

Lorawan gps PCB layout, top view — open source Microchip SAM board by robot-army

About the Lorawan gps PCB

Lorawan gps is an open source Microchip SAM PCB design by robot-army, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 95 × 20 mm, with 64 components from 42 distinct parts.

Its main chip is the SAMD21E17A, from the Microchip SAM family. Other key parts include the TPS61201, SHT21, MPU-9250, RFM9xW and MAX-M8. By type, the board carries 21 capacitors, 14 resistors, 8 connectors, 6 ICs, 3 inductors and 2 switches.

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

From the project

A handy multi-sensor LoRaWAN node

Main components on the Lorawan gps

TPS61201SHT21MPU-9250RFM9xWSAMD21E17AMAX-M8

Lorawan gps bill of materials (BOM)

64 components, 42 distinct parts.

QtyPartRefs
1
TPS61201
IC1
1
SHT21
U1
1
MPU-9250
U2
1
RFM9xW
U3
1
SAMD21E17A
U4
1
MAX-M8
U5
1
Q_PMOS_GSD
Q1
1
32.768kHz
Y1
1
MICRO-USB
J1
1
BL_PAD
P1
1
SWD_DAT
P2
1
SWD_CLK
P3
1
SWD_3V3
P4
1
SWD_GND
P5
1
SWD_RST
P6
1
CONN_01X04
P11
2
CONN_01X01
BAT_NEG1, BAT_POS1
2
SMA_EDGE
SMA_E1, SMA_E2
2
SW_PUSH
SW1, SW2
2
CG0603MLC-05E
VR1, VR2
Show 22 more
QtyPartRefs
1
LED
D1
1
D_Schottky
D2
1
100R
L1
1
2.2uH
L2
1
INDUCTOR_SMALL
L3
7
100nF
C1, C2, C4, C7, C15, C16, C19
1
10nF
C3
1
CP
C5
4
10uF
C6, C14, C17, C18
2
100n
C8, C10
2
1u
C9, C11
2
22p
C12, C13
1
33nF
C20
1
CP
C21
3
10k
R1, R2, R12
1
2k
R3
3
1k
R4, R5, R6
1
2M
R7
1
220K
R8
1
10R
R9
2
DNF
R10, R11
2
R
R13, R14

Lorawan gps design files

The KiCad project lives in the robot-army/LoRaWAN_GPS repository on GitHub; these links point at the commit this page was built from.

Lorawan gps: common questions

What microcontroller does the Lorawan gps use?

The Lorawan gps is built around the SAMD21E17A, from the Microchip SAM family.

How big is the Lorawan gps PCB?

The Lorawan gps measures 95 × 20 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Lorawan gps?

64 components, from 42 distinct parts. The full bill of materials is listed on this page.

Where can I download the Lorawan gps design files?

From the robot-army/LoRaWAN_GPS repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Lorawan gps design in my own project?

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

Can I test firmware for the Lorawan gps 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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