HardLabs

4 channel home automation

ampnics·4_channel_home_automation_PCB·Arbaa_Amp_V0.1/Arbaa_Amp_V0.1.kicad_pcb

4 channel home automation PCB layout, top view — open source ESP32 board by ampnics

About the 4 channel home automation PCB

4 channel home automation is an open source ESP32 PCB design by ampnics, published on GitHub. It is a 2-layer board measuring 95 × 55 mm, with 62 components from 22 distinct parts.

Its main chip is the ESP32-WROOM-32, from the ESP32 family. Other key parts include the ULN2003A, CH340C and AMS1117-3.3. By type, the board carries 19 resistors, 14 diodes, 12 capacitors, 4 ICs, 4 connectors and 4 relays.

It belongs with the iot & wireless, usb & debug tools and power & battery designs in this gallery.

From the project

4 channel home automation with ESP32 Wroom 32 with on board programmer

4-Channel Home Automation with ESP32 PCB This project is a 4-channel home automation system based on the ESP32, designed to control electrical appliances via Wi-Fi, MQTT, or a mobile app. The custom PCB integrates relays, optoisolated inputs, and an efficient power supply for reliable operation.

✔ ESP32-based Wi-Fi control (supports web server & MQTT).

✔ 4-Channel relay output for appliance control.

Main components on the 4 channel home automation

ULN2003ACH340CAMS1117-3.3ESP32-WROOM-32

4 channel home automation bill of materials (BOM)

62 components, 22 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ULN2003A
U1
1
CH340C
U2
1
AMS1117-3.3
U3
1
ESP32-WROOM-32
U4
2
SS8050
Q1, Q2
1
USB_C_RECEPTACLE_USB2.0_16P
USB_C_Receptacle_USB2.0_16P
J1
2
SCREW_TERMINAL_01X06
Screw_Terminal_01x06
J2, J3
1
CONN_01X04_PIN
Conn_01x04_Pin
J4
4
HF46F_005-HS1
K1, K2, K3, K4
1
HLK-PM01
PS1
2
SW_Push
SW1, SW2
3
LESD5D5.0CT1G
D1, D2, D4
5
SS34
D3, D10, D11, D12, D13
6
LED
D5, D6, D7, D8, D9, D14
7
0.1UF
0.1uf
C1, C3, C8, C9, C10, C11, C12
3
10UF
10uF
C2, C5, C7
1
10UF/25V
10uF/25V
C4
1
10NF
10nf
C6
3
0E
R1, R9, R12
2
5.1K
R2, R3
Show 2 more
QtyPartRefs
6
2K2
R4, R5, R6, R7, R8, R17
8
10K
R10, R11, R13, R14, R15, R16, R18, R19

4 channel home automation design files

The KiCad project lives in the ampnics/4_channel_home_automation_PCB repository on GitHub; these links point at the commit this page was built from.

4 channel home automation: common questions

What microcontroller does the 4 channel home automation use?

The 4 channel home automation is built around the ESP32-WROOM-32, from the ESP32 family.

How big is the 4 channel home automation PCB?

The 4 channel home automation measures 95 × 55 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the 4 channel home automation?

62 components, from 22 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 4 channel home automation design files?

From the ampnics/4_channel_home_automation_PCB 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 4 channel home automation design in my own project?

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

Can I test firmware for the 4 channel home automation 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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