HardLabs

Pcb cat toy

hari-ghatpande·pcb-cat-toy·hardware/kicad/cat-toy.kicad_pcb

Pcb cat toy layout, top view — open source ESP32 board by hari-ghatpande
Simulate this board

About the Pcb cat toy

Pcb cat toy is an open source ESP32 PCB design by hari-ghatpande, published on GitHub. It is a 2-layer board measuring 65 × 66.9 mm, with 43 components from 30 distinct parts.

Its main chip is the ESP32-WROOM-32E, from the ESP32 family. Other key parts include the CP2102N-Axx-xQFN24, TP4056-42-ESOP8, MT3608 and AP2112K-3.3. By type, the board carries 14 capacitors, 14 resistors, 5 ICs, 3 connectors, 3 diodes and 2 transistors.

It belongs with the power & battery, robotics & motion and iot & wireless designs in this gallery.

From the project

PCB designed to drive an MG90S servo using an ESP32, driven off of a LiPo battery.

An automatic cat toy: an ESP32 sweeps a servo-driven fishing-rod toy with onboard LiPo charging and battery monitoring.

- ESP32 antenna at the board edge with RF keepout - Trace widths per IPC-2221: 0.4–0.5 mm for 1A at 1 oz copper, 10°C rise - MT3608 switching loop and feedback sense path kept compact to minimize noise

Pcb cat toy, from the project README
From the project README

Main components on the Pcb cat toy

CP2102N-Axx-xQFN24TP4056-42-ESOP8MT3608AP2112K-3.3ESP32-WROOM-32E

Pcb cat toy bill of materials (BOM)

43 components, 30 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
CP2102N-Axx-xQFN24
U1
1
TP4056-42-ESOP8
U2
1
MT3608
U3
1
AP2112K-3.3
U4
1
ESP32-WROOM-32E
U5
2
MMBT2222A
Q1, Q2
1
USB_B_Micro
J1
1
Battery
J2
1
Servo
J3
1
SW_SPDT_312
SW1
1
RED
D1
1
GREEN
D2
1
SS14
D3
1
SRR0604-4R7ML
L1
1
4.7uF
C1
3
0.1uF
C2, C8, C12
2
10uF
C4, C6
2
22uF
C5, C15
2
100uF
C7, C11
3
1uF
C9, C10, C13
Show 10 more
QtyPartRefs
1
4.7nF
C14
2
1k
R1, R2
3
10kR
R3, R4, R10
1
1.2kR
R5
1
750kR
R6
3
100kR
R7, R8, R9
1
1MR
R11
1
22.1kR
R12
1
47.5kR
R13
1
1MR
R14

Pcb cat toy design files

The KiCad project lives in the hari-ghatpande/pcb-cat-toy repository on GitHub; these links point at the commit this page was built from.

Pcb cat toy: common questions

What microcontroller does the Pcb cat toy use?

The Pcb cat toy is built around the ESP32-WROOM-32E, from the ESP32 family.

How big is the Pcb cat toy?

The Pcb cat toy measures 65 × 66.9 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Pcb cat toy?

43 components, from 30 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Pcb cat toy design files?

From the hari-ghatpande/pcb-cat-toy repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Pcb cat toy design in my own project?

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

Can I test firmware for the Pcb cat toy 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.

Similar boards