4 layers159 × 130 mm
2 layers89 × 52 mm
- Size
- 89 × 52 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 10
- Nets
- 35
- Pads
- 55
- Tracks, vias
- 33, 0
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 25 Jan 2024
- Updated
- 18 Jan 2026
Overview
SW2 is an open-source printed circuit board by AgOpenGPS-Official, from the AgOpenGPS-Official/Rate_Control repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 89 × 52 mm with 10 parts on 35 nets, routed with 33 tracks and 0 vias.
Its parts include 7 switches, 1 diode and 1 connector. It belongs with the AVR (ATmega, ATtiny) boards of this library.
README
README.mdNano RC12-3
- uses a Nano (with ENC28J60 Ethernet shield) & an on-board mounted Cytron for rate control
- 1 or 2 MD13S for rate control
- self assembled through-hole board, least expensive
- controls two rates
- can be connected to a relay module with a 20 pin cable or dupont connectors
- work switch
- pressure switch
- [OSHPARK](https://oshpark.com/shared_projects/UU8e90h9
Teensy 4.1 RC11-2
- uses a Teensy & an on-board mounted Cytron for rate control
- small components are surface mount parts
- Teensy Ethernet
- can control two rates and eight sections
- 8 relays (SPDT 12V output)
- (1) 5V or 12V analog (pressure) input, potentiometer adjustable filtering
- (2) optically isolated digital (rate/pulse) inputs (5V or 12V)
- 3.3V I2C headers (Qwiic)
- supports optional external RelayDriver5 I2C board
- work switch
- canbus
ESP32 RC15
- uses an ESP32 (optional W5500 Ethernet Module)
- mostly surface mount parts
- can control two rates and 7-14 sections
- (2) DRV8870 motor drivers with reversible outputs for rates
- (7) DRV8870 motor drivers for 7 reversible (motorized ball valve) outputs
- (4) 5V analog inputs (or 2 differential inputs)
- (2) optically isolated digital (rate/pulse) inputs, up to 12V
- RS485 chip & header
- 3.3V I2C header
- supports optional external RelayDriver5 I2C board
- supports optional external RelayDriver5 I2C board
RelayDriver5
- PCA9535 based I2C IO expander
- designed to plug into 8 or 16 channel relay board with Qwiic cable
Firmware
Parts
10| Qty | Value | Footprint | References |
|---|---|---|---|
| 1 | 1N4007 | Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal | D1 |
| 1 | Arduino_Nano_v3.x | Module:Arduino_Nano | A1 |
| 1 | Auto | AAAlibrary:Mini_Toggle_3pin | SW5 |
| 1 | Master | AAAlibrary:Mini_Toggle_3pin | SW6 |
| 1 | Power | TerminalBlock_Phoenix:TerminalBlock_Phoenix_PT-1,5-2-5.0-H_1x02_P5.00mm_Horizontal | J1 |
| 1 | Rate | AAAlibrary:Mini_Toggle_3pin | SW7 |
| 1 | S1 | AAAlibrary:Mini_Toggle_3pin | SW1 |
| 1 | S2 | AAAlibrary:Mini_Toggle_3pin | SW2 |
| 1 | S3 | AAAlibrary:Mini_Toggle_3pin | SW3 |
| 1 | S4 | AAAlibrary:Mini_Toggle_3pin | SW4 |
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Questions
How big is the SW2 PCB?
It measures 89 × 52 mm and has 2 copper layers, 1.6 mm thick.
What parts does the SW2 use?
10 parts. 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 SW2 KiCad files?
From the AgOpenGPS-Official/Rate_Control repository on GitHub, at the commit this page was made from: the board is SwitchBox/SwitchBox2/SW2.kicad_pcb and its schematic ESP32/RC15/Analog.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the SW2 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).