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Catoff at home

derdds·Esit-Internship·03.08.26 morning/Active Projects/Kedi Savar/Electrical/Catoff at home.kicad_pcb

Catoff at home PCB layout, top view — open source ESP32 board by derdds

About the Catoff at home PCB

Catoff at home is an open source ESP32 PCB design by derdds, published on GitHub. It is a 2-layer board measuring 70 × 100 mm, with 64 components from 14 distinct parts.

Its main chip is the esp32 placeholder 25.7, from the ESP32 family. Other key parts include the LM2596S-5. By type, the board carries 38 resistors, 11 capacitors, 5 diodes, 3 transistors, 2 ICs and 2 connectors.

Main components on the Catoff at home

LM2596S-5

Catoff at home bill of materials (BOM)

64 components, 14 distinct parts — part numbers from the project's BOM.

QtyPartRefs
2
LM2596S-5
U1, U2
1
~
A1
3
AOD454A
Q1, Q2, Q3
1
Conn_02x20_Odd_Even
J1
1
Screw_Terminal_01x12
J2
2
D_Schottky
D1, D2
3
D
D3, D4, D5
2
L
L1, L2
4
C
C1, C2, C3, C4
7
100nF
C5, C6, C7, C8, C9, C10, C11
12
R
R1, R2, R3, R4, R5, R6, R10, R11 +4
7
10k
R7, R8, R9, R16, R17, R18, R19
7
100
R20, R21, R22, R23, R24, R25, R26
12
330
R27, R28, R29, R30, R31, R32, R33, R34 +4

Catoff at home design files

The KiCad project lives in the derdds/Esit-Internship repository on GitHub; these links point at the commit this page was built from.

Catoff at home: common questions

What microcontroller does the Catoff at home use?

The Catoff at home is built around the esp32 placeholder 25.7, from the ESP32 family.

How big is the Catoff at home PCB?

The Catoff at home measures 70 × 100 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Catoff at home?

64 components, from 14 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 Catoff at home design files?

From the derdds/Esit-Internship 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 Catoff at home design in my own project?

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

Can I test firmware for the Catoff at home 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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