

Switching network
- Size
- 228.6 × 152.4 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 49
- Nets
- 110
- Pads
- 304
- Tracks, vias
- 442, 6
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 18 Oct 2020
- Updated
- 9 May 2021
Overview
Switching network is an open-source printed circuit board by SmittyHalibut, from the SmittyHalibut/DoubleDeltaSlotAntenna repository on GitHub. It is a 2-layer board of 228.6 × 152.4 mm with 49 parts on 110 nets, routed with 442 tracks and 6 vias.
It is built around the R-783.3-0.5 and ULN2803A. Its parts include 19 connectors, 12 switches, 8 capacitors, 5 ICs and 3 inductors. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
2README
README.mdSmitty's research into John Portune's Double Delta Skeleton Slot Antenna
This is my directory of stuff. Let's see, I've got an OpenSCAD model for the top bracket, I've got some drawings of the switching network I made, I've got the raw NanoVNA data I collected... I might have other stuff too, look at README.md files inside the directories.
- Notes and files for my BayCon 2021 presentation
- Raw data, and analysis of data, from NanoVNA Saver of my build of this antenna.
- Diagram for full switching network
- OpenSCAD and
.stlfiles for my top-of-mast spreader bracket
Parts
49| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | RT42xxxx | Relay_THT:Relay_DPDT_Schrack-RT2-FormC_RM5mm | K1, K2, K3, K4, K5, K6, K7, K8 |
| 3 | .1uF | Capacitor_THT:C_Rect_L7.0mm_W3.5mm_P2.50mm_P5.00mm | C2, C5, C6 |
| 2 | 100uF | Capacitor_THT:CP_Radial_D10.0mm_P2.50mm_P5.00mm | C3, C4 |
| 2 | Jumper_NC_Small | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | JP1, JP2 |
| 2 | RF Choke | Inductor_THT:L_Axial_L26.0mm_D9.0mm_P30.48mm_Horizontal_Fastron_77A | L2, L3 |
| 2 | Test Points | Connector_PinHeader_2.54mm:PinHeader_1x12_P2.54mm_Vertical | J16, J17 |
| 2 | Test Points | Connector_PinHeader_2.54mm:PinHeader_1x10_P2.54mm_Vertical | J12, J15 |
| 1 | +12v Power | Libraries:AndersonPP45 | J20 |
| 1 | .1uF | Capacitor_THT:C_Rect_L11.0mm_W4.3mm_P10.00mm_MKT | C8 |
| 1 | .1uF | Capacitor_THT:C_Rect_L9.0mm_W3.6mm_P7.50mm_MKT | C7 |
| 1 | .1uF | Capacitor_THT:C_Rect_L7.0mm_W3.5mm_P5.00mm | C1 |
| 1 | 1:1 Balun | Libraries:Balun-FT140 | L1 |
| 1 | 8P8C_Shielded | Libraries:RJ-45 | J11 |
| 1 | Conn_Coaxial | Connector_Coaxial:SMA_Samtec_SMA-J-P-H-ST-EM1_EdgeMount | J1 |
| 1 | E/W Disable | Relay_THT:Relay_DPDT_Schrack-RT2-FormC_RM5mm | K10 |
| 1 | E/W Reverse | Relay_THT:Relay_DPDT_Schrack-RT2-FormC_RM5mm | K12 |
| 1 | EW+ | Connector:Banana_Jack_1Pin | J18 |
| 1 | EW- | Connector:Banana_Jack_1Pin | J19 |
| 1 | Leonardo_Pro_Micro | Package_DIP:DIP-24_W15.24mm_Socket_LongPads | U4 |
| 1 | Module 1 Socket | Libraries:MatchingNetworkModule | J3 |
| 1 | Module 2 Socket | Libraries:MatchingNetworkModule | J4 |
| 1 | Module 3 Socket | Libraries:MatchingNetworkModule | J5 |
| 1 | Module 4 Socket | Libraries:MatchingNetworkModule | J6 |
| 1 | Module 5 Socket | Libraries:MatchingNetworkModule | J7 |
| 1 | N/S Disable | Relay_THT:Relay_DPDT_Schrack-RT2-FormC_RM5mm | K9 |
| 1 | NS+ | Connector:Banana_Jack_1Pin | J8 |
| 1 | NS- | Connector:Banana_Jack_1Pin | J10 |
| 1 | R-783.3-0.5 | Converter_DCDC:Converter_DCDC_RECOM_R-78E-0.5_THT | U3 |
| 1 | RS-485 vs XBee | Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_Vertical | J14 |
| 1 | SN65HVD10-EP | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U1 |
| 1 | Series Enable | Relay_THT:Relay_DPDT_Schrack-RT2-FormC_RM5mm | K11 |
| 1 | Simple Bias Tee Rotation Control | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J9 |
| 1 | Test Points | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J13 |
| 1 | ULN2803A | Package_DIP:DIP-18_W7.62mm_Socket_LongPads | U5 |
| 1 | XBeeModule | Libraries:XBeeModule | U2 |
More from SmittyHalibut/DoubleDeltaSlotAntenna
2- 2 layers100.3 × 100.3 mm

- 2 layers44.4 × 69.9 mm

Similar boards
- 2 layers33 × 90 mm

- 2 layers17.8 × 35.6 mm

- 2 layers85 × 70 mm

- 4 layers74.9 × 62.2 mm

- 4 layers50 × 50 mm

- 2 layers123.5 × 79.5 mm

Projet mecatronique
Mickael235/pic16-biometric-access-control
Biometric access-control system based on PIC16F88, SFM3050-TC1 fingerprint sensing, RS232 communication, relay control, KiCad PCB design and SolidWorks enclosure.
45 parts - 2 layers32.5 × 25.1 mm

Ledstrip controller
wipmate/electronics
A collection of small ESP32-powered PCBs for use in smart home appliances.
16 parts - 2 layers42 × 72 mm

Questions
How big is the Switching network PCB?
It measures 228.6 × 152.4 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Switching network use?
49 parts, built around the R-783.3-0.5 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 Switching network KiCad files?
From the SmittyHalibut/DoubleDeltaSlotAntenna repository on GitHub, at the commit this page was made from: the board is Antenna Base Switching Network/switching-network/switching-network.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Switching network design in my own project?
Its repository states no licence, so its author keeps all rights: ask SmittyHalibut before reusing the design.