Inspired by Omega dock\new board.
This is yet another dock for Onion Omega2/Omega2+ single board computers. Main board features:
- Ethernet socket
- USB type A Host
- Micro USB power and UART
- Expansion pins
- User Button and LED
BOM is also available in CSV format.
| Reference | Quantity | Description | MPN | Manufacturer | Datasheet |
|---|---|---|---|---|---|
| C10 C2 | 2 | CAP CER 10UF 6.3V X5R 0603 | CL10A106MQ8NNNC | Samsung Electro-Mechanics | link |
| C4 C5 | 2 | CAP CER 22pF 50V NPO 0603 | CL10C220JB8NNN | Samsung Electro-Mechanics | link |
| C6 C8 C7 C1 C3 | 5 | CAP CER 0.1UF 50V X7R 0603 | CL10B104KB8NNNC | Samsung Electro-Mechanics | link |
| C9 | 1 | CAP CER 1UF 16V X7R 0603 | CL10B105KO8NNNC | Samsung Electro-Mechanics | link |
| D2 D1 | 2 | TVS DIODE 5.25V 17V SOT23-6 | USBLC6-2SC6 | STMicroelectronics | link |
| D3 D4 | 2 | LED Yellow Green 0603 30mA | FYLS-0603GD | FORYARD OPTOELECTRONICS | link |
| F1 | 1 | PTC RESET FUSE 6V 1.1A 1206 | MF-NSMF110-2 | Bourns | link |
| J1 | 1 | CONN RCPT USB2.0 MICRO B SMD R/A | 10118194-0001LF | Amphenol ICC (FCI) | link |
| J2 | 1 | CONN RCPT USB2.0 TYPEA 4POS R/A | KLS1-181A-W | KLS | link |
| J3 | 1 | CONN F HEADER 26POS 2.54mm | ZL262-26DG | CONNFLY | link |
| J4 | 1 | CONN M HEADER 6 POS 2.54mm | ZL201-06G | CONNFLY | link |
| J5 | 1 | RJ45 connector with transformer | KLS12-TL002R-1*1-G/Y-1-03 | KLS | link |
| R1 R3 | 2 | SMD RES 0603 10 kOhm 100mW 50V | RC0603FR-10KR | Hitano | link |
| R11 R7 R6 R10 | 4 | SMD RES 0603 49.9 Ohm 100mW 50V | RC0603FR-49R9 | Hitano | link |
| R12 R4 R5 R8 R9 R2 R13 | 7 | SMD RES 0603 470 Ohm 100mW 50V | RC0603JR-470R | Hitano | link |
| SW2 SW1 | 2 | SWITCH TACTILE SPST-NO 0.05A 12V | TACTM-24N-F | NINIGI | link |
| U1 | 1 | USB UART CONVERTER 16SOIC | CH340G | WCH | link |
| U2 | 1 | SBC | Omega2 | Onion | link |
| U3 | 1 | IC REG LINEAR 3.3V 800MA SOT223 | LD1117S33TR | STMicroelectronics | link |
| Y1 | 1 | Quartz Crystal SMD 12.0 MHz | 12.88662 | GEYER | link |
Note:
I have bought a KLS Ethernet connector for J5 but used a footprint for Amphenol ICC RJMG1BD3B8K1ANR connector. There is just one difference - reversed pinout for Yellow LED.
Also, I have bought a KLS USB A connector for J2 and used an Amphenol ICC UE27AC54100 footprint, but they are similar, though.
Designed using KiCAD. Also, I have take some parts from Digi-Key Kicad library.
The library with footprints is available at the project directory omega-dock.
Board has user Button at GPIO11 and LED at GPIO17. To able these ones just solder bridges SB1 and SB4.
Also, to able Ethernet LEDs solder bridges SB2 and SB3.
I have realized that there is no fuse for a USB power socket and it may cause damage to the USB port on your PC. So, it recommends using USB 3.0 and higher.
