Pololu 38 kHz IR Proximity Sensor Fixed Gain (Low Brightness)
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Product details
| Management number | 234967980 | Release Date | 2026/07/02 | List Price | US$3.02 | Model Number | 234967980 | ||
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- Pololu 38 kHz modulated IR proximity sensor
- Low Brightness version
- Sampling rate: 1 kHz
- Average input current: 8 mA mA
- Typical sensing range: 12 inches (30 cm)
These Pololu 38 kHz IR Proximity Sensor Fixed Gain (Low Brightness) features a fixed-gain, 38 kHz modulated IR sensor and a corresponding IR LED with oscillator circuit to make a tiny proximity sensor. This low-brightness version draws an average of 8 mA at 5 V and has a typical sensing range up to approximately 12 inches (30 cm). This sensor is based on Vishay’s TSSP77038 modulated infrared receiver.
Unlike most IR receiver modules designed for remote control of appliances like televisions, the TSSP77038 has a fixed gain (sensitivity) that makes the sensor more predictable when used in proximity or reflectance sensors. The Pololu carrier module combines the TSSP77038 with an IR LED driven by a 555 timer-based circuit to make a complete sensor module that requires only a 3.3 V to 5 V power connection.
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