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- Manufacturer: Pololu
- Order number: EXP-R25-364
- Manufacturer part number: 2802
- Availability: 2
- country of origin: US
- HS code: 85439000
- Weight (kg): 0.001
The Pololu RC switch with Small Low-Side MOSFET can be used with standard hobby radio control... more
The Pololu RC switch with Small Low-Side MOSFET can be used with standard hobby radio control systems for radio control switch applications or simple interface applications. Example uses include converting extra RC receiver or servo controller outputs to simple high/low signals that can control LEDs or relays and connecting RC systems to microcontroller projects that do not have the necessary resources for decoding the RC interface. Two outputs indicate the presence of a valid signal and whether the switch is on or off, and an integrated low-side MOSFET turns on when the switch is on, allowing the board to drive small loads directly. The switch also features a flyback (or freewheeling) diode across the load outputs so that you can connect a coil to them, such as a motor or relay, without any additional external components.
The board requires a 2.5–5.5 V power source supplied to VCC. The board’s MOSFET can deliver up to around 3 A with VCC at 5 V and can handle load supply voltages up to 30 V.
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 turn on the MOSFET. By default, the threshold is approximately 1700 µs, 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.
This compact unit measures 0.4″ × 0.6″ and weighs just over 0.5 g (0.02 oz) without the included header pins.
- Size: 0.4"x0.6"
- Weight: 0.5g
- Maximum output current: 3 A
- Minimum logic voltage: 2.5 V
- Maximum logic voltage: 5.5 V