This product consists of a single-pole, double-throw (SPDT) power relay and a control circuit that measures incoming radio control (RC) signals, making it easy to control large, electrically isolated loads in RC systems. Example applications include using extra channels on an RC receiver or servo controller to turn on lights, motors, or irrigation valves. The RC switch is available pre-soldered or as a partial kit that allows for greater application flexibility:
The RC switch measures the width of incoming RC pulses and compares it to a user-configurable threshold (with ±64 µs of hysteresis) to decide whether to activate the relay. By default, the threshold is approximately 1700 ?s, with switch activation occurring above the threshold (longer pulses), but the switch has a learning mode that allows you to change the threshold and the activation direction. A safe-start feature reduces the likelihood of unexpected activation.
We generally recommend using a 4- or 5-cell NiMH or NiCD battery pack to power the switch. The battery pack will typically be connected to an RC receiver or servo controller, which passes the power on to the RC switch.
The included relay is an Omron G5LE-14-DC5 (1MB pdf) and is rated for up to 10 A under most conditions.
Advantages over similar products
- Compact layout
- User-configurable activation threshold and direction
- Safe-start mode to reduce likelihood of unexpected activation
- Zener diode for fast current decay on relay coil
- Specification of electrical routing clearance rules on relay switch nodes (see user?s guide)
- The GOOD pin indicates the presence of a valid RC signal (10?330 Hz pulse rate, 0.5?2.5 ms pulse width).
- The OUT pin indicates whether the relay is activated (i.e. the relay coil is energized).
Warning: This product is not designed to or certified for any particular high-voltage safety standard. Working with voltages above 30 V can be
extremely dangerous and should only be attempted by qualified individuals with appropriate equipment and protective gear.
The Pololu RC Switch with Relay connected to a typical RC receiver.
- Size: 1? × 1.35? × 0.9?
- Weight: 17 g
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