The Pololu RC Switch with Small Low-Side MOSFET has 11 through holes spaced 0.1″ apart that fit 0.1″ header pins.
The GND, VRC, and RC IN pins make up the switch’s RC interface and can be connected directly to an RC receiver or servo controller:
This board involves three potentially-different power supplies:
The bottom of the board has jumpers that can be bridged with solder in order connect VCC to VRC or VCC to LOAD HIGH. These jumpers provide extra flexibility in how the system is powered, and some examples are given in Section 3.2.
The LOAD LOW and LOAD HIGH pins are connections for your load and load supply. The LOAD LOW pins are normally disconnected from GND, but when the switch activates the MOSFET turns on and connects LOAD LOW to GND. There is a flyback (also known as a “freewheeling”) diode between LOAD LOW and LOAD HIGH. The board’s MOSFET can deliver up to 3 A with VCC at 5 V and can handle load supply voltages up to 30 V. More details on connecting your load and load supply to the switch can be found in Section 3.2.
Outputs and indicator LED
The RC switch provides feedback about what state it is in via a yellow indicator LED. The LED behavior is described in Section 8. Status information is also provided by two additional outputs:
When these outputs are high they will be at the same voltage level as VCC. When low, these outputs will be at 0 V (ground). These outputs do not have resistors in series with them. Each output can source or sink up to 25 mA.
The learning mode jumper on both the top and bottom of the board can be used to get the device into learning mode and configure it. The configuration procedure is described in Section 9.
A 12-pin 0.1″ straight breakaway male header is included with the Pololu RC Switch with Small Low-Side MOSFET. The header pins can be soldered in and used to connect the RC switch to perfboards or breadboards.