HardLabs

Smart pet tag

microvalu·smart-pet-tag·hardware/eda/sections/pettag_all_sections.kicad_sch

This repository ships a schematic but no board layout.

About the Smart pet tag PCB

Smart pet tag is an open source Nordic nRF PCB design by microvalu, published on GitHub. It is a board, with 61 components from 34 distinct parts.

Its main chip is the nRF52840, from the Nordic nRF family. Other key parts include the MPU-6050, BU33TD3WG-TR and 100uF. By type, the board carries 26 capacitors, 13 resistors, 4 ICs, 3 switches, 3 diodes and 3 inductors.

From the project

This directory holds one .kicadsch per schematic section (antenna.kicadsch, batterysense.kicadsch, mcu.kicadsch, …). These files are tracked in git and are the source of truth — open them directly in KiCad Eeschema, edit, save in place, and commit. The SKiDL auto-router only fire

This directory holds one .kicadsch per schematic section (antenna.kicadsch, batterysense.kicadsch, mcu.kicadsch, …). These files are tracked in git and are the source of truth — open them directly in KiCad Eeschema, edit, save in place, and commit. The SKiDL auto-router only fires for a section if its .kicadsch is missing (initial seeding); it never overwrites an existing tracked file unless you pass --force.

Main components on the Smart pet tag

nRF52840MPU-6050BU33TD3WG-TR100uF

Smart pet tag bill of materials (BOM)

61 components, 34 distinct parts.

QtyPartRefs
1
nRF52840
U2
1
MPU-6050
U6
1
BU33TD3WG-TR
U7
1
100uF
U18
1
RRR030P03TL-VB
Q1
1
32.768kHz
Y1
1
32MHz
Y2
1
CA-C03
ANT1
1
CR2477
H1
2
100R
R_NFC1, R_NFC2
3
SW_Push
SW1, SW2, SW3
1
918-418K2024S40000
USBC1
1
Red
LED1
1
1N5819WS
D1
1
USBLC6-2P6
D2
1
SMF5.0A
D3
1
3.9nH
L1
2
10uH
L3, L4
1
0.8pF
C1
1
0.5pF
C2
Show 14 more
QtyPartRefs
4
15pF
C4, C5, C6, C7
2
4.7uF
C8, C20
2
1uF
C9, C14
8
100nF
C10, C11, C12, C16, C17, C18, C26, C33
1
2.2uF
C15
4
4.7uF
C21, C23, C24, C29
1
2200pF
C28
2
10uF
C30, C31
6
10k
R1, R5, R12, R13, R19, R21
2
1k
R2, R4
2
5.1k
R6, R7
1
1M
R14
1
300k
R15
1
0R
R20

Smart pet tag design files

The KiCad project lives in the microvalu/smart-pet-tag repository on GitHub; these links point at the commit this page was built from.

Smart pet tag: common questions

What microcontroller does the Smart pet tag use?

The Smart pet tag is built around the nRF52840, from the Nordic nRF family.

How many components are on the Smart pet tag?

61 components, from 34 distinct parts. The full bill of materials is listed on this page.

Where can I download the Smart pet tag design files?

From the microvalu/smart-pet-tag repository on GitHub, which has the schematic; the links under Design files point to each one.

Can I use the Smart pet tag design in my own project?

The repository has no license, so all rights stay with microvalu. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Smart pet tag without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug Nordic nRF firmware against it before you order a PCB.

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