HardLabs

Pet filter

ZanzyTHEbar·pet-filter·hardware/pcb/petfilter.kicad_pcb

Pet filter PCB layout, top view — open source ESP32 board by ZanzyTHEbar

About the Pet filter PCB

Pet filter is an open source ESP32 PCB design by ZanzyTHEbar, published on GitHub. It is a 2-layer board measuring 110 × 80 mm, with 52 components from 36 distinct parts.

Its main chip is the ESP32-S3-WROOM-1, from the ESP32 family. Other key parts include the MP1584EN, AMS1117-3.3, DRV8871 and PT4115. By type, the board carries 14 resistors, 13 capacitors, 10 connectors, 5 ICs, 4 diodes and 2 switches.

It belongs with the iot & wireless and sensors designs in this gallery.

From the project

A compact, intelligent air scrubber that uses venturi-based water-air contact to dissolve and destroy pet odor compounds.

A compact, intelligent air scrubber that uses venturi-based water-air contact to dissolve and destroy pet odor compounds.

PetFilter is a hardware product that eliminates pet odors (specifically litter box ammonia, mercaptans, and VOCs) using a novel approach: water scrubbing. No consumer pet product currently exploits the fact that ammonia -- the #1 cat litter odor compound -- is extremely water-soluble.

Main components on the Pet filter

MP1584ENAMS1117-3.3ESP32-S3-WROOM-1DRV8871PT4115

Pet filter bill of materials (BOM)

52 components, 36 distinct parts.

QtyPartRefs
1
MP1584EN
U1
1
AMS1117-3.3
U2
1
ESP32-S3-WROOM-1
U3
1
DRV8871
U4
1
PT4115
U5
1
AO3400A
Q1
1
DC_Jack
J1
1
USB_C
J2
1
PUMP
J3
1
UVC_LED
J4
1
INTERLOCK
J5
1
MQ137
J6
1
FLOW
J7
1
LEVEL1
J8
1
LEVEL2
J9
1
THERM
J10
1
5A
F1
1
RESET
SW1
1
BOOT
SW2
1
SMBJ15A
D1
Show 16 more
QtyPartRefs
2
SS340
D2, D4
1
WS2812B
D3
1
10uH
L1
1
47uH
L2
1
100u/25V
C1
7
100n
C2, C4, C5, C8, C11, C12, C13
1
22u/25V
C3
2
22u/10V
C6, C7
1
10u
C9
1
22u
C10
1
100k
R1
1
19.1k
R2
8
10k
R3, R8, R9, R10, R11, R12, R13, R14
2
5.1k
R4, R5
1
0.2
R6
1
0.33
R7

Pet filter design files

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

Pet filter: common questions

What microcontroller does the Pet filter use?

The Pet filter is built around the ESP32-S3-WROOM-1, from the ESP32 family.

How big is the Pet filter PCB?

The Pet filter measures 110 × 80 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Pet filter?

52 components, from 36 distinct parts. The full bill of materials is listed on this page.

Where can I download the Pet filter design files?

From the ZanzyTHEbar/pet-filter repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Pet filter design in my own project?

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

Can I test firmware for the Pet filter without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.

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