2 layers100 × 119 mm Relay board, the printed circuit board in 3D

Relay board

Boards and software used to control electric oven

Size: 100 × 119 mm
Copper layers: 2
Thickness: 1.6 mm
Parts: 27
Nets: 60
Pads: 167
Tracks, vias: 428, 11
Routed: Yes
KiCad: KiCad 4
Created: 3 Jun 2018
Updated: 31 May 2026

Overview

Relay board is an open-source printed circuit board by xtompok, from the xtompok/oven-control repository on GitHub, published under the MIT licence. It is a 2-layer board of 100 × 119 mm with 27 parts on 60 nets, routed with 428 tracks and 11 vias.

It is built around the LTV-847, ULN2803A and G5Q-1A. Its parts include 9 resistors, 4 ICs, 4 connectors and 2 diodes. It belongs with the home automation and IoT boards of this library.

Main components

README

README.md

Oven control software

Boards and software used to control electric oven

Installation

burn raspbian to SD card
create ssh file on boot partition of the SD card
sudo raspi-config
- set hostname
- set password
- set locale
- set timezone
- set read-only
sudo apt update
sudo apt install vim git python3-venv mosquitto nginx
clone this repo
in oven-control/sw/web_interface:
- python3 -m venv venv
- . venv/bin/activate/
- pip install -r requirements.txt
mkdir -p .config/systemd/user/
cp oven_control.service .config/systemd/user/
sudo loginctl enable-linger pi
edit /etc/mosquitto/mosquitto.conf:

log_dest stderr

listener 1883 protocol mqtt

listener 9001 protocol websockets

sudo systemctl restart mosquitto
edit /etc/nginx/sites-available/default
- root /home/pi/oven-control/sw/web_interface/static/
edit /etc/nginx/nginx.conf:
- add to http directive charset UTF-8;
sudo systemctl restart nginx

Parts

Qty	Value	Footprint	References
9	R	Resistor_SMD:R_0603_1608Metric_Pad0.99x1.00mm_HandSolder	R1, R2, R3, R4, R5, R6, R7, R8, R9
4	G5LE-1	Relay_THT:Relay_SPDT_Omron-G5LE-1	RE5, RE6, RE7, RE8
4	G5Q-1A	Relay_THT:Relay_SPST_Hongfa_HF105F1	RE1, RE2, RE3, RE4
2	Conn_01x10_Male	Connector:Faston_1x10_P7.62mm_Horizontal	J2, J3
2	LTV-847	Package_DIP:SMDIP-16_W9.53mm	U1, U2
1	Conn_01x02_Male	Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Horizontal	J4
1	Conn_01x09_Male	Connector_PinHeader_2.54mm:PinHeader_1x09_P2.54mm_Horizontal	J1
1	D_Schottky	Diode_SMD:D_SMA_Handsoldering	D2
1	L78L05_SO8	Package_SO:SOIC-8_3.9x4.9mm_P1.27mm	U3
1	LED	LED_THT:LED_D5.0mm	D1
1	ULN2803A	Package_SO:SOIC-18W_7.5x11.6mm_P1.27mm	U4

Questions

How big is the Relay board PCB?

It measures 100 × 119 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Relay board use?

27 parts, built around the LTV-847, ULN2803A and G5Q-1A. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.

Where can I download the Relay board KiCad files?

From the xtompok/oven-control repository on GitHub, at the commit this page was made from: the board is relay_board.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.

Can I use the Relay board design in my own project?

Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).

Category and platform

Home automation and IoT

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/xtompok-oven-control" title="Relay board in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe>

A picture

<img src="https://pcbkit.io/embed/boards/xtompok-oven-control.jpg" alt="Relay board" width="1200" height="900">

A picture that opens the board, for a README

[![Relay board](https://pcbkit.io/embed/boards/xtompok-oven-control.jpg?size=s)](https://pcbkit.io/boards/xtompok-oven-control)

Source

Repository: xtompok/oven-control
Board file: relay_board.kicad_pcb
Commit: 19dc5e8
Licence: MIT

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