4 layers47 × 75 mm LCD Adapter, the printed circuit board in 3D

LCD Adapter

Modular Linux Handheld Cyberdeck

Size: 47 × 75 mm
Copper layers: 4
Thickness: 1.6 mm
Parts: 56
Nets: 45
Pads: 245
Tracks, vias: 740, 198
Pours: 7
Routed: Yes
KiCad: KiCad 9.0 (file 20241229)
Created: 15 Jun 2025
Updated: 5 May 2026

Overview

LCD Adapter is an open-source printed circuit board by Decktrix-Lab, from the Decktrix-Lab/decktrix repository on GitHub. It is a 4-layer board of 47 × 75 mm with 56 parts on 45 nets, routed with 740 tracks and 198 vias.

It is built around the TLV75801PDBV and 1N5819WS. Its parts include 16 capacitors, 16 resistors, 5 connectors, 3 ICs and 1 diode. It belongs with the lEDs and displays and interfaces and adapters boards of this library.

Main components

README

README.md

Overview

Decktrix is a compact, modular handheld cyberdeck designed to fit in your pocket. It features a universal connector that allows you to attach modules and extend its functionality.

The project is in an early development phase, so significant changes to the design and features are expected.

decktrix

Build steps

Init submodules

text

git submodule update --init --recursive --depth 1

Prefetch debootstrap on first run to speed next iterations

text

sudo ./build-image.sh --prefetch-debootstrap

Build SD card image

text

sudo ./build-image.sh --use-prefetch-debootstrap

Write image to SD card

text

sudo dd if=deploy/sdcard.img of=<sd-card-dev> bs=8M conv=fdatasync status=progress

Wifi

Connect to WiFi - instructions

Setup ip on eth0

text

sudo ip addr add 192.168.0.2/24 dev eth0
sudo ip link set dev eth0 up

Resize FS

text

sudo growpart /dev/mmcblk0 4
sudo resize2fs /dev/mmcblk0p4
df -h

Bluetooth

text

sudo apt install bluez bluez-tools
bluetoothctl
power on  # in case the bluez controller power is off
agent on
scan on  # wait for your device's address to show up here
scan off
trust MAC_ADDRESS
pair MAC_ADDRRESS
connect MAC_ADDRESS

Packages for cross compilation

text

sudo apt install g++-arm-linux-gnueabihf
sudo apt install gcc-arm-linux-gnueabihf

Rotate screen on sway

text

export SWAYSOCK=/home/debian/sway-ipc.$(id -u).$(pgrep -x sway).sock

# horizontal orientation
swaymsg output DSI-1 transform 90

# vertical orientation
swaymsg output DSI-1 transform 0

Run launcher

text

export SWAYSOCK=/home/debian/sway-ipc.$(id -u).$(pgrep -x sway).sock
swaymsg "exec /usr/bin/launcher -l -E /dev/input/by-path/platform-gpio-keys-event -A /etc/apps.toml"

Toggle sway bar

text

export SWAYSOCK=/home/debian/sway-ipc.$(id -u).$(pgrep -x sway).sock
swaymsg bar mode toggle

Setup Ethernet over USB and enable internet sharing from PC

Load usb gadget driver on target

text

sudo modprobe g_ether
sudo ip link set usb0 up

On host network GUI change new usb interface IPv4 method to "Share to other computers" it will assign ip addr automatically

Setup ip address on target based on host's ip:

text

sudo ip addr add 10.42.0.10/24 dev usb0

Add routing host ip to routing table

text

sudo ip route add default via 10.42.0.1 dev usb0

Enable packet forwarding

text

sudo sysctl -w net.ipv4.ip_forward=1

On target test internet connection

text

ping google.com

Install gstreamer for playing video

text

sudo apt-get install gstreamer1.0-tools gstreamer1.0-plugins-base \
                     gstreamer1.0-plugins-good gstreamer1.0-plugins-bad \
                     gstreamer1.0-plugins-ugly gstreamer1.0-libav

References

[1] https://forum.digikey.com/t/debian-getting-started-with-the-stm32mp157/12459
[2] https://github.com/cvetaevvitaliy/stm32mp1-ubuntu
[3] https://linux-sunxi.org/Debootstrap

Parts

Qty	Value	Footprint	References
14	TestPoint	TestPoint:TestPoint_Pad_D1.0mm	TP1, TP2, TP3, TP4, TP5, TP6, TP7, TP8, TP9, TP10, TP11, TP12, TP13, TP14
8	100nF	Capacitor_SMD:C_0402_1005Metric	C9, C10, C11, C12, C13, C14, C15, C16
6	10k	Resistor_SMD:R_0603_1608Metric	R6, R7, R8, R9, R10, R11
5	0	Resistor_SMD:R_0603_1608Metric	R1, R2, R3, R4, R5
4	0.47uF	Capacitor_SMD:C_0603_1608Metric	C1, C3, C4, C5
3	4.7uF	Capacitor_SMD:C_0603_1608Metric	C2, C6, C8
2	FH12-30S-0.5SH_55_	lib:HIROSE_FH12-30S-0.5SH_55_	J2, J5
2	TLV75801PDBV	Package_TO_SOT_SMD:SOT-23-5	U1, U2
1	1-1734248-5	lib:TE_1-1734248-5	J4
1	100k	Resistor_SMD:R_0603_1608Metric	R15
1	160k	Resistor_SMD:R_0603_1608Metric	R13
1	1N5819WS	Diode_SMD:D_SOD-323	D1
1	1uF	Capacitor_SMD:C_0603_1608Metric	C7
1	2-1734248-0	lib:2-1734248-0	J6
1	230k	Resistor_SMD:R_0603_1608Metric	R14
1	39k	Resistor_SMD:R_0603_1608Metric	R12
1	6.8	Resistor_SMD:R_0603_1608Metric	R16
1	Conn_01x10	Connector_PinHeader_2.54mm:PinHeader_1x10_P2.54mm_Vertical	J1
1	L	Inductor_SMD:L_1210_3225Metric	L1
1	TPS61042DRBR	lib:DRB8_1P75X1P5	U3

Questions

How big is the LCD Adapter PCB?

It measures 47 × 75 mm and has 4 copper layers, 1.6 mm thick.

What parts does the LCD Adapter use?

56 parts, built around the TLV75801PDBV and 1N5819WS. 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 LCD Adapter KiCad files?

From the Decktrix-Lab/decktrix repository on GitHub, at the commit this page was made from: the board is hardware/LCD_Adapter/LCD_Adapter/LCD_Adapter.kicad_pcb and its schematic hardware/LCD_Adapter/LCD_Adapter/LCD_Adapter.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the LCD Adapter design in my own project?

Its repository states no licence, so its author keeps all rights: ask Decktrix-Lab before reusing the design.

Category and platform

LEDs and displays Interfaces and adapters

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/decktrix-lab-decktrix-lcd-adapter-2" title="LCD Adapter 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/decktrix-lab-decktrix-lcd-adapter-2.jpg" alt="LCD Adapter" width="1200" height="900">

A picture that opens the board, for a README

[![LCD Adapter](https://pcbkit.io/embed/boards/decktrix-lab-decktrix-lcd-adapter-2.jpg?size=s)](https://pcbkit.io/boards/decktrix-lab-decktrix-lcd-adapter-2)

Source

Repository: Decktrix-Lab/decktrix
Board file: hardware/LCD_Adapter/LCD_Adapter/LCD_Adapter.kicad_pcb
Commit: a42b013
Licence: Not stated

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