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CatWAN Citizen

ElectronicCats·CatWAN_Citizen·Hardware/citizen_sensor.kicad_pcb

CatWAN Citizen PCB layout, top view — open source Microchip SAM board by ElectronicCats
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About the CatWAN Citizen PCB

CatWAN Citizen is an open source Microchip SAM PCB design by ElectronicCats, published on GitHub under the AGPL-3.0 license. It is a 2-layer board measuring 52 × 80 mm, with 66 components from 43 distinct parts.

Its main chip is the ATSAMD21E18A-MU, from the Microchip SAM family. Other key parts include the TLC2272, MCP73831, AP2114, MICS-4514 and RFM95W-868S2. By type, the board carries 24 resistors, 16 capacitors, 7 ICs, 7 connectors, 6 diodes and 1 transistor.

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

From the project

CatWAN Citizen for the Urban Sensor Board

Main components on the CatWAN Citizen

TLC2272MCP73831AP2114MICS-4514RFM95W-868S2LM324ATSAMD21E18A-MU

CatWAN Citizen bill of materials (BOM)

66 components, 43 distinct parts.

QtyPartRefs
1
TLC2272
U1
1
MCP73831
U2
1
AP2114
U3
1
MICS-4514
U4
1
RFM95W-868S2
U6
1
LM324
U7
1
ATSAMD21E18A-MU
U8
1
2N7002
Q1
1
BATT
J1
1
USB_B_Micro
J2
1
VEML6075
J3
1
BME280
J4
1
PROG
J5
1
CSS811
J6
1
MAX30105
J7
1
Antenna_Shield
AE1
1
Fuse
F1
1
Microphone
MK1
1
100K GAIN
RV1
1
RST
SW1
Show 23 more
QtyPartRefs
1
D_Schottky
D1
1
CHARGE
D2
1
ON
D3
2
RB751S40T1G
D4, D5
1
Builtin
D6
6
10uF
C1, C2, C4, C5, C12, C14
6
0.1uf
C3, C6, C7, C9, C15, C16
4
1uF
C8, C10, C11, C13
2
30
R1, R4
1
36
R2
1
269
R3
5
10K
R5, R11, R12, R14, R17
1
47k
R6
3
1K
R7, R10, R18
2
330
R8, R24
1
2.2K
R9
1
100K
R13
1
22K
R15
2
100
R16, R19
1
66.5k
R20
1
66.5
R21
1
680k
R22
1
330k
R23

CatWAN Citizen design files

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

CatWAN Citizen: common questions

What microcontroller does the CatWAN Citizen use?

The CatWAN Citizen is built around the ATSAMD21E18A-MU, from the Microchip SAM family.

How big is the CatWAN Citizen PCB?

The CatWAN Citizen measures 52 × 80 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the CatWAN Citizen?

66 components, from 43 distinct parts. The full bill of materials is listed on this page.

Where can I download the CatWAN Citizen design files?

From the ElectronicCats/CatWAN_Citizen repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the CatWAN Citizen design in my own project?

Yes, under the terms of its AGPL-3.0 license, which ElectronicCats chose for the repository.

Can I test firmware for the CatWAN Citizen 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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