2 layers100 × 100 mm
2 layers100 × 100 mm
LittleSwitchBus
profdc9/ModularTuner59A Modular Antenna Tuner for a Phased Array Antenna System
- Size
- 100 × 100 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 101
- Nets
- 65
- Pads
- 330
- Tracks, vias
- 869, 38
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 23 Aug 2018
- Updated
- 4 Dec 2019
Overview
LittleSwitchBus is an open-source printed circuit board by profdc9, from the profdc9/ModularTuner repository on GitHub. It is a 2-layer board of 100 × 100 mm with 101 parts on 65 nets, routed with 869 tracks and 38 vias.
It is built around the MCP23008-E/P and ULN2803A. Its parts include 36 capacitors, 18 resistors, 15 connectors, 10 inductors and 8 diodes. It belongs with the radio and wireless boards of this library.
Main components
2
MCP23008-E/P
PDIP-18-40℃~+125℃ 1.7MHz 1.8V~5.5V 1uA 600mV 8 8 8.5mA I2C Interrupt Output Reset function、Cascade and address expansion PDIP-18 I/O Expanders ROHSMicrochip TechnologyI/O Expanders
ULN2803A
SOP-18-300mil-40℃~+85℃ 0.93mA 100uA 15pF 20uA 30V 500mA 50V 8 SOP-18-300mil Darlington Transistor Arrays ROHSUMWDarlington Transistor Arrays
README
README.mdThis a project to create a Modular Antenna Tuner System that can be reconfigured for different needs. This material is copyrighted by Daniel Marks (KW4TI) and licensed under the Creative Commons License CC-BY-SA 4.0.
This project is a toolkit for making automatic antenna tuners and smart HF antennas.
A description and documentation of this project may be found in the "doc" directory as ModularTuner-Guide.pdf.
Parts
101| Qty | Value | Footprint | References |
|---|---|---|---|
| 24 | 10 nF | Capacitors_THT:C_Disc_D5.0mm_W2.5mm_P2.50mm | C1, C2, C3, C12, C15, C18, C19, C20, C21, C24, C25, C26, C27, C28, C29, C30 +8 |
| 10 | 100 uH | Inductors_THT:L_Axial_L5.3mm_D2.2mm_P7.62mm_Horizontal_Vishay_IM-1 | L1, L2, L3, L4, L5, L6, L7, L8, L9, L10 |
| 10 | Conn_Coaxial | tuner:bnc_90_1-1337543-0_pad_combo | J1, J2, J3, J4, J5, J6, J7, J8, J9, J10 |
| 8 | 1k | Resistors_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R3, R4, R5, R6, R7, R8, R9, R10 |
| 8 | 51R | Resistors_THT:R_Axial_DIN0411_L9.9mm_D3.6mm_P12.70mm_Horizontal | R11, R12, R13, R14, R15, R16, R17, R18 |
| 8 | LED | LEDs:LED_D3.0mm | D1, D2, D3, D4, D5, D6, D7, D8 |
| 8 | SPDTRelay | tuner:HK19FRelay | RLY1, RLY2, RLY3, RLY4, RLY5, RLY6, RLY7, RLY8 |
| 4 | 10 nF | Capacitors_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm | C9, C14, C34, C35 |
| 4 | 100 nF | Capacitors_THT:C_Disc_D5.0mm_W2.5mm_P2.50mm | C10, C13, C23, C33 |
| 4 | Conn_01x01 | Connectors:1pin | J13, J14, J15, J16 |
| 4 | Jumper_NC_Dual | Pin_Headers:Pin_Header_Straight_1x03_Pitch2.54mm | JP1, JP2, JP3, JP4 |
| 2 | 10k | Resistors_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1, R2 |
| 2 | C_Small | Capacitors_THT:C_Disc_D5.0mm_W2.5mm_P2.50mm | C16, C17 |
| 1 | 10 nFl | Capacitors_THT:C_Disc_D5.0mm_W2.5mm_P2.50mm | C22 |
| 1 | 100 uF | Capacitors_THT:CP_Radial_Tantal_D5.0mm_P2.50mm | C11 |
| 1 | Conn_02x05_Odd_Even | Pin_Headers:Pin_Header_Straight_2x05_Pitch2.54mm | J11 |
| 1 | MCP23008 | Housings_DIP:DIP-18_W7.62mm_Socket | U1 |
| 1 | ULN2803A | Housings_DIP:DIP-18_W7.62mm_Socket | U2 |
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Questions
How big is the LittleSwitchBus PCB?
It measures 100 × 100 mm and has 2 copper layers, 1.6 mm thick.
What parts does the LittleSwitchBus use?
101 parts, built around the MCP23008-E/P and ULN2803A. 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 LittleSwitchBus KiCad files?
From the profdc9/ModularTuner repository on GitHub, at the commit this page was made from: the board is Tuner/LittleSwitchBus/LittleSwitchBus.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the LittleSwitchBus design in my own project?
Its repository states no licence, so its author keeps all rights: ask profdc9 before reusing the design.