HardLabs

OpenBeacon3

etherkit·OpenBeacon3·pcb/OpenBeacon2.kicad_pcb

OpenBeacon3 PCB layout, top view — open source Microchip SAM board by etherkit

About the OpenBeacon3 PCB

OpenBeacon3 is an open source Microchip SAM PCB design by etherkit, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 120 × 90 mm, with 97 components from 59 distinct parts.

Its main chip is the ATSAMD21G18A, from the Microchip SAM family. Other key parts include the LM358, MAX809, ER-OLED0.96-1W, A2235-H and ZLDO1117G33TA. By type, the board carries 29 resistors, 28 capacitors, 10 ICs, 6 connectors, 5 transistors and 5 switches.

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

From the project

500 mW Si5351C-based MEPT Transmitter

OpenBeacon 3 ============ 500 mW Si5351C-based MEPT Transmitter

Display ------- Line 1: GPS status (internal or external antenna, number of satellites fixed), UTC time, transmission mode

Transmit UART TX (during firmware loading)

Depress rotary encoder shaft momentarily to step through tuning rates. An underline cursor will indicate which frequency digit is being changed.

Main components on the OpenBeacon3

LM358ATSAMD21G18AMAX809ER-OLED0.96-1WA2235-HZLDO1117G33TAFOX924B-25.000Si5351CINA193MCP4725A1T-E/CH

OpenBeacon3 bill of materials (BOM)

97 components, 59 distinct parts.

QtyPartRefs
1
LM358
U1
1
ATSAMD21G18A
U2
1
MAX809
U3
1
ER-OLED0.96-1W
U4
1
A2235-H
U5
1
ZLDO1117G33TA
U6
1
FOX924B-25.000
U7
1
Si5351C
U8
1
INA193
U9
1
MCP4725A1T-E/CH
U10
1
Etherkit Low Pass Filter Module
M1
2
IRLML9301
Q1, Q2
1
2N7002
Q3
1
MMBT4403
Q4
1
RD00HVS1
Q5
1
ABS25-32.768KHz-6-1-T
X1
1
USB Micro
J1
1
ARM_SWD
J2
2
SMA-F
J3, J5
1
2.1mm Barrel Jack
J4
Show 39 more
QtyPartRefs
1
BNC
J6
1
MF-MSMF050-2
F1
3
Reset
S1, S2, S3
1
ENCODER-SW
S4
1
Reset
S5
1
GND
TP1
1
BIAS V
TP2
2
CG0603MLC-05E
VR1, VR2
1
Red
D1
1
Yellow
D2
1
Blue
D3
1
BZV55-B15
D4
1
Green LED
D5
1
10uH
L1
1
FB2402-61 5T
L2
1
4.7n
C1
2
4.7u
C2, C14
2
6.8
C3, C4
10
100n
C5, C7, C8, C11, C12, C13, C19, C20 +2
5
1u
C6, C9, C10, C24, C25
1
2.2u
C15
5
10n
C16, C21, C23, C26, C28
2
10u
C17, C18
5
330
R1, R2, R4, R8, R18
1
1M
R3
1
22k 1%
R5
1
4.7k 1%
R6
2
10k
R7, R11
2
4.7k
R9, R10
1
390k
R12
2
2.2k
R13, R14
3
100k
R15, R16, R17
1
0
R19
3
22k
R20, R23, R24
3
18
R21, R22, R25
1
10
R26
1
3.3k
R27
1
56
R28
1
0.5 1%
R29

OpenBeacon3 design files

The KiCad project lives in the etherkit/OpenBeacon3 repository on GitHub; these links point at the commit this page was built from.

OpenBeacon3: common questions

What microcontroller does the OpenBeacon3 use?

The OpenBeacon3 is built around the ATSAMD21G18A, from the Microchip SAM family.

How big is the OpenBeacon3 PCB?

The OpenBeacon3 measures 120 × 90 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the OpenBeacon3?

97 components, from 59 distinct parts. The full bill of materials is listed on this page.

Where can I download the OpenBeacon3 design files?

From the etherkit/OpenBeacon3 repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the OpenBeacon3 design in my own project?

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

Can I test firmware for the OpenBeacon3 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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