4 layers117.3 × 78.7 mm
OSMC Receiver
Koalaven/Open-Source-Modular-Controller
A modular controller that can be configure to how you want to use it
91 parts
2 layers50 × 100 mm
LumaDIY
nekaas/LumaDIYESP32-C3 SuperMini educational development board — learn electronics, programming, sensors & robotics
- Size
- 50 × 100 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 42
- Nets
- 34
- Pads
- 162
- Tracks, vias
- 326, 248
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 29 Jul 2026
- Updated
- 29 Jul 2026
Overview
LumaDIY is an open-source printed circuit board by nekaas, from the nekaas/LumaDIY repository on GitHub. It is a 2-layer board of 50 × 100 mm with 42 parts on 34 nets, routed with 326 tracks and 248 vias.
It is built around the PCF8574DWR and 1N4148W. Its parts include 6 resistors, 6 switches, 5 connectors, 4 capacitors and 3 diodes. It belongs with the ESP32 and RISC-V boards of this library.
Main components
2
PCF8574DWR
SOIC-16-300mil-40℃~+85℃ 100kHz 10uA 2.5V~6V 25mA 30uA 8 I2C Interrupt Output Push-Pull Reset function、Cascading and address extension、Built-in LED driver SOIC-16-300mil I/O Expanders ROHSTexas InstrumentsI/O Expanders
1N4148W
SOD-123150mA 1A 1V@50mA 1uA@75V 400mW 4ns 75V Independent SOD-123 Switching Diodes ROHSSTMicroelectronicsSwitching Diodes
README
README.md🛠️ LumaDIY
ESP32-C3 SuperMini Educational Development Board — learn electronics, embedded programming, sensors, and robotics without breadboards full of jumper wires.
🎯 Goals
- Learn programming using Arduino
- Learn electronics through practical projects
- Be beginner-friendly
- Keep the cost low enough for classrooms
- Require almost no soldering by students
🧠 Core Hardware
| Feature | Detail |
|---|---|
| MCU | ESP32-C3 SuperMini |
| Wireless | Wi-Fi + Bluetooth LE |
| Programming | USB-C |
| Power | On-board 3.3V regulator |
| Display | 0.96" I²C OLED (128×64) |
| Input | 4 user buttons |
| Audio | Passive piezo buzzer |
| Indicator | RGB status LED |
| Expansion | STEMMA QT / Qwiic I²C connector |
| Serial | UART connector |
| GPIO | Multiple breakout headers |
| Battery | 4×AA or USB power |
| Protection | Reverse polarity / PTC |
🔌 Plug-in Modules
Everything needed for beginner projects is already on the board. Students only plug in external modules:
- Ultrasonic sensor
- Servo
- DC motors
- Soil moisture sensor
- Temperature sensor
- IR motion sensor
- NeoPixels
- Relay modules
- Buttons
- LEDs
No external display or buzzer modules required.
🎮 Intended Projects
| Category | Projects |
|---|---|
| Security | Safe with servo lock, Motion alarm |
| Environment | Smart plant monitor, Weather station |
| Games | Simon Says, Reaction timer, Mini games, Digital dice |
| Robotics | Robot car |
| Display | LED animations, Stopwatch |
| IoT | Wi-Fi / BLE connected projects |
📁 Project Structure
LuMaDIY/
├── LumaDIY.kicad_pro ← Project file
├── LumaDIY.kicad_sch ← Schematic
├── LumaDIY.kicad_pcb ← PCB layout
├── fp-lib-table ← Footprint library table
│
├── SIMBOLI/ ← Symbol libraries
│ ├── ESP32-C3_SUPERMINI_TH.kicad_sym
│ ├── IO-Expander.kicad_sym (PCF8574)
│ ├── PCF8574DWR.kicad_sym
│ └── Simboli.kicad_sym
│
├── FOOTPRINTI/ ← Custom footprints
│ ├── MODULE_ESP32-C3_SUPERMINI_TH.kicad_mod
│ ├── SOIC127P1030X265-16N.kicad_mod
│ └── SW-TH_SS-12D01-GX.kicad_mod
│
├── 3D-MODELI/ ← 3D models (STEP)
│ ├── esp32 c3 supermini.step
│ ├── SSD1306_OLED_Display(128x64).step
│ ├── BuzzerD9.step
│ ├── CMT-8530S-SMT.step
│ ├── PCF8574DWR.step
│ ├── SW-TH_SS-12D01-GX.step🛠️ Opening in KiCad
- KiCad 10 or later
- File → Open Project →
LumaDIY.kicad_pro - All libraries self-contained — no extra setup
🔗 Related Projects
| Project | Focus | Repo |
|---|---|---|
| LumaDIY | Electronics education | (this repo) |
| LumaGlow | LED lighting ecosystem | LumaGLOW-ZiemassvetkuEglite |
CreateLab
├── LumaDIY ← Educational hardware (sensors, robotics, programming)
└── LumaGlow ← LED lighting (art, wearables, decorations)🧑🏫 Design Philosophy
- Low cost — affordable for classrooms
- Open hardware — schematics and PCB files included
- Open software — Arduino-compatible
- Modular expansion — plug in what you need
- Beginner friendly — no soldering required
- Professional enough for advanced makers
LumaDIY teaches how embedded systems work.
LumaGlow applies those skills to create sophisticated lighting.
📄 License
MIT
Parts
42| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | LOGO | LOGO | G***, G***, G***, G***, G***, G***, G***, G*** |
| 5 | SW_Push | Button_Switch_THT:SW_PUSH_6mm_H5mm | SW1, SW2, SW3, SW4, SW5 |
| 4 | Conn_01x06_Pin | Misc:SolderPads-6x | J5, J6, J7, J8 |
| 4 | MountingHole_Pad | MountingHole:MountingHole_3.2mm_M3_Pad_Via | H1, H2, H3, H4 |
| 3 | 100nF | Capacitor_SMD:C_0805_2012Metric | C1, C2, C3 |
| 3 | 330 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R2, R3, R4 |
| 2 | 1N4148W | Diode_SMD:D_SOD-123 | D2, D3 |
| 2 | 4.7K | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R5, R6 |
| 1 | 0.96 OLED | Misc:Display_128x64_096_I2C | J1 |
| 1 | 10uF | Capacitor_SMD:C_0805_2012Metric | C4 |
| 1 | 1K | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1 |
| 1 | Battery | Connector_JST:JST_PH_B2B-PH-K_1x02_P2.00mm_Vertical | BT1 |
| 1 | Buzzer | Buzzer_Beeper:MagneticBuzzer_CUI_CMT-8504-100-SMT | BZ1 |
| 1 | ESP32-C3_SUPERMINI_TH | MCU:MODULE_ESP32-C3_SUPERMINI_TH | U1 |
| 1 | LED_BKRG | LED_THT:LED_D5.0mm-4_RGB_Wide_Pins | D1 |
| 1 | PCF8574DWR | IO-Expanderi:SOIC127P1030X265-16N | U2 |
| 1 | Polyfuse_Small | Fuse:Fuse_1206_3216Metric_Pad1.42x1.75mm_HandSolder | F1 |
| 1 | Q_NPN_BCE | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | SW_SPDT | Misc:SW-TH_SS-12D01-GX | SW6 |
Similar boards
- 4 layers99 × 53.3 mm
PSLab
fossasia/pslab-hardware
PSLab Hardware Design and Schematics https://pslab.io
199 parts1.7kApache-2.0 - 2 layers208.8 × 396.9 mm
Ferris
pierrechevalier83/ferris
A low profile split keyboard designed to satisfy one single use case elegantly
145 parts1.3k - 2 layers285.5 × 95 mm
- 4 layers95.6 × 73.6 mm
- 2 layers141.5 × 83 mm
Rolio
MickiusMousius/Rolio46Keyboard
A split wireless keyboard based on the Corne and Sofle
110 parts236MIT - 6 layers160 × 100 mm
- 2 layers99.1 × 90.7 mm
Bgkeeb
sadekbaroudi/bgkeeb
This is a reversible 100mm x 100mm pcb with support for mx or choc switches (no hotswap), per key led, rotary encoders, and exposes the SDA/SCL/GND/VCC lines in the form of the pimoroni trackball pins (meaning you can…
108 parts108
Questions
How big is the LumaDIY PCB?
It measures 50 × 100 mm and has 2 copper layers, 1.6 mm thick.
What parts does the LumaDIY use?
42 parts, built around the PCF8574DWR and 1N4148W. 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 LumaDIY KiCad files?
From the nekaas/LumaDIY repository on GitHub, at the commit this page was made from: the board is LumaDIY/LumaDIY.kicad_pcb and its schematic LumaDIY/LumaDIY.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the LumaDIY design in my own project?
Its repository states no licence, so its author keeps all rights: ask nekaas before reusing the design.