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Smarthome v0.1

whysixmift·smarthome_v0.1

Smarthome v0.1 PCB layout, top view — open source ESP32 board by whysixmift

About the Smarthome v0.1 PCB

Smarthome v0.1 is an open source ESP32 PCB design by whysixmift, 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 designs in this gallery.

From the project

I wanted to control lights and appliances in my room over Wi-Fi without having loose relay modules, breadboards, and 220V AC wires floating around my desk. Wiring loose AC mains on a breadboard felt super unsafe, so I designed this 4-channel relay board in KiCad.

I wanted to control lights and appliances in my room over Wi-Fi without having loose relay modules, breadboards, and 220V AC wires floating around my desk. Wiring loose AC mains on a breadboard felt super unsafe, so I designed this 4-channel relay board in KiCad.

- ESP32-WROOM-32: Main microcontroller for Wi-Fi control. - 4 Relays: Switches 4 separate AC/DC loads (5V 5A relays driven by a ULN2003A driver chip). - Onboard Power: Hi-Link HLK-PM01 takes 100-240V AC input and outputs 5V DC, so I don't need an external power adapter. An AMS1117-3.3 steps it down to 3.3V for the ESP32. - USB-C…

Smarthome v0.1, from the project README
From the project README

Main components on the Smarthome v0.1

ULN2003ACH340CAMS1117-3.3ESP32-WROOM-32

Smarthome v0.1 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
J1
2
Screw_Terminal_01x06
J2, J3
1
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
C1, C3, C8, C9, C10, C11, C12
3
10uF
C2, C5, C7
1
10uF/25V
C4
1
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

Smarthome v0.1 design files

The KiCad project lives in the whysixmift/smarthome_v0.1 repository on GitHub; these links point at the commit this page was built from.

Smarthome v0.1: common questions

What microcontroller does the Smarthome v0.1 use?

The Smarthome v0.1 is built around the ESP32-WROOM-32, from the ESP32 family.

How big is the Smarthome v0.1 PCB?

The Smarthome v0.1 measures 95 × 55 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Smarthome v0.1?

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 Smarthome v0.1 design files?

From the whysixmift/smarthome_v0.1 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 Smarthome v0.1 design in my own project?

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

Can I test firmware for the Smarthome v0.1 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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