HardLabs

CatFlap HA

FauthD·CatFlap_HA·Schematics/WlanAdapter.kicad_sch

CatFlap HA

About the CatFlap HA PCB

CatFlap HA is an open source ESP32 PCB design by FauthD, published on GitHub under the GPL-3.0 license. It is a board, with 31 components from 20 distinct parts.

Its main chip is the ESP32-C3_SUPERMINI, from the ESP32 family. Other key parts include the L7806. By type, the board carries 9 resistors, 8 capacitors, 5 diodes, 3 ICs, 2 transistors and 2 connectors.

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

From the project

How to modify a "Sureflap Dualscan" for connecting to Home Assistant

It would be fairly easy for Petcare to produce a flap with Zigbee or another open protocol. However they do not seem to be interested in that. (And they miss the 20,000 new HA installations per Month - how many own a cat?).

Main components on the CatFlap HA

ESP32-C3_SUPERMINIL7806

CatFlap HA bill of materials (BOM)

31 components, 20 distinct parts.

QtyPartRefs
1
~
U1
1
ESP32-C3_SUPERMINI
U3
1
L7806
U4
2
BC550
Q1, Q3
1
Barrel_Jack
J1
1
Conn_02x05_Odd_Even
J2
1
Buzzer
BZ1
1
SS14
D1
4
LED
D2, D3, D4, D5
1
100µH/0.7R
L1
1
470µ/16V
C1
3
100µF
C2, C3, C7
1
1000µ/10V
C9
1
10µF
C10
1
100n
C11
1
100nF
C12
2
390R
R2, R10
4
2k7
R3, R4, R7, R9
2
12k
R5, R6
1
1k
R8

CatFlap HA design files

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

CatFlap HA: common questions

What microcontroller does the CatFlap HA use?

The CatFlap HA is built around the ESP32-C3_SUPERMINI, from the ESP32 family.

How many components are on the CatFlap HA?

31 components, from 20 distinct parts. The full bill of materials is listed on this page.

Where can I download the CatFlap HA design files?

From the FauthD/CatFlap_HA repository on GitHub, which has the schematic; the links under Design files point to each one.

Can I use the CatFlap HA design in my own project?

Yes, under the terms of its GPL-3.0 license, which FauthD chose for the repository.

Can I test firmware for the CatFlap HA 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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