HardLabs

PC and Light Controller

HighCarlSagan·PC_and_Light_Controller·hardware/PC_and_Light_Controller.kicad_pcb

PC and Light Controller PCB layout, top view — open source ESP32 board by HighCarlSagan

About the PC and Light Controller PCB

PC and Light Controller is an open source ESP32 PCB design by HighCarlSagan, published on GitHub under the Custom license license. It is a 2-layer board measuring 81.2 × 58.9 mm, with 28 components from 11 distinct parts.

Its main chip is the ESP32-DEVKIT-V1, from the ESP32 family. Other key parts include the TPS259807ONRGER. By type, the board carries 13 resistors, 5 capacitors, 4 ICs, 3 connectors and 3 diodes.

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

From the project

PC UPS Controller, with additional switches for controlling any nearby circuits using ESP32.

A single-board ESP32 controller that remotely actuates a PC's UPS power button via servo and switches three 5 V LED lighting channels via eFuses — all driven from a Telegram bot. Part of a larger homelab automation setup.

I needed a physical "finger" to press the UPS power button on my desk so I could wake the PC from anywhere — usually while travelling, sometimes just from another room — without opening the UPS chassis (which would void warranty) and without buying a generic smart-plug solution that wouldn't fit cleanly into the rest of my homelab.

PC and Light Controller, from the project README
From the project README

Main components on the PC and Light Controller

ESP32-DEVKIT-V1TPS259807ONRGER

PC and Light Controller bill of materials (BOM)

28 components, 11 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ESP32-DEVKIT-V1
Jellybean
U1
3
TPS259807ONRGER
Texas Instruments
U2, U3, U4
1
SCREW_TERMINAL_01X04
Screw_Terminal_01x04
J1
2
SCREW_TERMINAL_01X06
Screw_Terminal_01x06
J3, J4
3
LED
D1, D2, D3
3
CC0603KRX7R7BB104
0.1u_16V_0603
YAGEO
C1, C3, C4
2
865080343009
100u_16V_0603
Würth Elektronik
C2, C5
3
CRGH0603F220R
220R_0.21W_0603
TE Connectivity Passive Product
R1, R6, R10
3
ERJ-PB3B3000V
298R_0.21W_0603
Panasonic Electronic Components
R2, R7, R11
3
ERJ-PB3B1002V
10k_0.1W_0603
Panasonic Electronic Components
R3, R8, R12
4
ERJ-PB3B1001V
1k_0.2W_0603
Panasonic Electronic Components
R4, R5, R9, R13

PC and Light Controller design files

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

PC and Light Controller: common questions

What microcontroller does the PC and Light Controller use?

The PC and Light Controller is built around the ESP32-DEVKIT-V1, from the ESP32 family.

How big is the PC and Light Controller PCB?

The PC and Light Controller measures 81.2 × 58.9 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the PC and Light Controller?

28 components, from 11 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 PC and Light Controller design files?

From the HighCarlSagan/PC_and_Light_Controller 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 PC and Light Controller design in my own project?

It is published under Custom license, which limits how it may be reused; read the license before building on it.

Can I test firmware for the PC and Light Controller 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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