2 layers91.4 × 71.1 mm
Pico w rover
NikodemBartnik/Mini-Mars-Rover
Educational robotic platform made to look like a mini mars rover
20 parts143MIT
2 layers55.4 × 82 mm
G board V0 1
2technology/g-board5ESP32 IoT Home automation PCB - 1 * 12V relay, 4 * input button connector with HW debounce, 4 * ws2812b output
- Size
- 55.4 × 82 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 42
- Nets
- 64
- Pads
- 159
- Tracks, vias
- 181, 8
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 2 Jan 2020
- Updated
- 12 Jun 2026
Overview
G board V0 1 is an open-source printed circuit board by 2technology, from the 2technology/g-board repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 55.4 × 82 mm with 42 parts on 64 nets, routed with 181 tracks and 8 vias.
It is built around the MM74HCT245N, IRFZ44N and LM1117-3.3, with the RTD34012 among its other parts. Its parts include 17 resistors, 10 capacitors, 7 connectors, 4 ICs and 2 diodes. It belongs with the home automation and IoT boards and the ESP32 boards of this library.
Main components
4
MM74HCT245N
PDIP-20-40℃~+85℃ 1 160uA 16ns@5V,45pF 4.5V~5.5V 7.2mA 7.2mA 74HCT 8 Bidirectional Output enable Tri-State PDIP-20 Buffers, Drivers, Receivers, Transceivers ROHSonsemiBuffers, Drivers, Receivers, Transceivers
IRFZ44N
TO-220110pF 130W 18mΩ@10V 39nC@10V 430pF 4V 50A 60V 880pF N-Channel TO-220 MOSFETs ROHSOSENMOSFETs
LM1117-3.3
SOT-2231 1.3V@(1000mA) 15V 1A 2mA 3.3V Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHShongjiachengUncategorised
RTD34012
DIP,12.7x29mmDIP,12.7x29mm Power Relays ROHSTE ConnectivityPower Relays
README
README.mdG-board V 0.1!
PCB design in order to use a ESP32 DevkitC to drive a relay and 4 seperate WS2812b-channels. It has terminal blocks for easy installation and up to 4 pushbuttons can be connected. It uses a Logic level shifter to communicate with the WS2812b led drivers. Use case: Smart lights room controller for Home assistant (ESP32 firmware created with ESPHome).
- ESP32 DEVKIT C 32D
- 4 * I2C connection headers
- 1 * 12V Relay rated 16A (Schrack RTD34012 )
- 4 * WS2812b LED Output channels (with Logic Level Shifter 74HCT245N)
- 4 * debounced pushbutton inputs
Features
12V Relay rated 16A (Schrack RTD34012 )
4 debounced pushbutton inputs
4 WS2812b LED Output channels (with Logic Level Shifter 74HCT245N)
Schematic and PCB
View Schematic (pdf)
Download KiCAD files: Schematic, PCB
Gerbers
Download Gerbers
BOM
Licence
Parts
42| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 10kΩ | Resistor_SMD:R_1206_3216Metric_Pad1.42x1.75mm_HandSolder | R8, R14, R15, R16, R17 |
| 4 | 1nF | Resistor_SMD:R_1206_3216Metric_Pad1.42x1.75mm_HandSolder | C7, C8, C9, C10 |
| 4 | 220Ω | Resistor_SMD:R_1206_3216Metric_Pad1.42x1.75mm_HandSolder | R10, R11, R12, R13 |
| 4 | 330Ω | Resistor_SMD:R_1206_3216Metric_Pad1.42x1.75mm_HandSolder | R1, R2, R3, R4 |
| 4 | I2C | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J2, J3, J4, J5 |
| 3 | 0.1μF | Resistor_SMD:R_1206_3216Metric_Pad1.42x1.75mm_HandSolder | C1, C4, C5 |
| 3 | 10μF | Resistor_SMD:R_1206_3216Metric_Pad1.42x1.75mm_HandSolder | C2, C3, C6 |
| 2 | 4.7kΩ | Resistor_SMD:R_1206_3216Metric_Pad1.42x1.75mm_HandSolder | R5, R6 |
| 1 | 1N4148 | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D1 |
| 1 | 1k | Resistor_SMD:R_1206_3216Metric_Pad1.42x1.75mm_HandSolder | R9 |
| 1 | 1kΩ | Resistor_SMD:R_1206_3216Metric_Pad1.42x1.75mm_HandSolder | R7 |
| 1 | Cyb3rcats | geert:cybercats_logo_silk_cu | * |
| 1 | ESP32-DEVKITC-32D | MODULE_ESP32-DEVKITC-32D | U2 |
| 1 | IRFZ44N | TO-220 | U3 |
| 1 | LED | LED_SMD:LED_1206_3216Metric_Pad1.42x1.75mm_HandSolder | D4 |
| 1 | LM1117-3.3 | TO-220 | U4 |
| 1 | MM74HCT245N | DIP254P762X508-20 | U1 |
| 1 | POWER + LED | TerminalBlock_Phoenix:TerminalBlock_Phoenix_MKDS-1,5-5-5.08_1x05_P5.08mm_Horizontal | J6 |
| 1 | RTD34012 | RTD34012 | K1 |
| 1 | Schakelaars | TerminalBlock_Phoenix:TerminalBlock_Phoenix_MKDS-1,5-5-5.08_1x05_P5.08mm_Horizontal | J7 |
| 1 | aRGB LEDs | TerminalBlock_Phoenix:TerminalBlock_Phoenix_PT-1,5-5-5.0-H_1x05_P5.00mm_Horizontal | J1 |
Questions
How big is the G board V0 1 PCB?
It measures 55.4 × 82 mm and has 2 copper layers, 1.6 mm thick.
What parts does the G board V0 1 use?
42 parts, built around the MM74HCT245N, IRFZ44N, LM1117-3.3 and RTD34012. 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 G board V0 1 KiCad files?
From the 2technology/g-board repository on GitHub, at the commit this page was made from: the board is G-board_V0_1.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the G board V0 1 design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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