TSOP 1738 Infrared IR Wireless Remote Control Module Kit for Arduino
TSOP 1738 Infrared IR Wireless Remote Control Module Kit for Arduino
TSOP 1738 Infrared IR Wireless Remote Control Module Kit for Arduino
The kit consists of two main components: a handheld 20-key transmitter (the remote) and a shielded receiver module. The transmitter pulses an IR LED to send data, while the receiver captures these pulses and converts them into a digital bitstream that your microcontroller can understand.
The Anatomy of IR Control:
• 38kHz Modulation: To differentiate the remote's signal from other light sources (like sunlight or lamps), the remote flickers the IR light at 38,000 times per second. The receiver is specifically tuned to "hear" only this frequency.
• NEC Protocol Support: Most of these kits use the NEC transmission protocol, which sends a unique address and command code for every button press. This allows the receiver to distinguish between a "Volume Up" command and a "Power" command.
• Integrated Filtering: The receiver module (often a TSOP-style sensor) includes an internal automatic gain control (AGC) and a band-pass filter, ensuring that the signal reaching your Arduino is clean and logic-level ready.
Why it’s a Development Essential:
• Wireless Versatility: It allows for non-contact control of robots, home appliances, or menu systems on an LCD.
• Low Power Logic: The receiver draws negligible current (~5µA) when idle, making it perfect for battery-powered IoT devices that need to "wake up" upon receiving a signal.
• Ease of Implementation: Because the output is a standard digital signal, it requires no complex analog-to-digital conversion; a simple digital read or interrupt is all that is needed.
Technical Capabilities:
• Operating Range: Up to 8 meters (line-of-sight).
• Wide Voltage Support: Works reliably at 3.3V or 5V, making it a drop-in component for both legacy 5V Arduinos and modern 3.3V ESP32/ARM systems.
• Logic Output: The OUT pin sits at HIGH when idle and pulses LOW during signal reception.
Best For:
The 38kHz IR kit is the primary choice for wireless home automation switches, remote-steered robotics, interactive media displays, and HID (Human Interface Device) prototypes.
Specifications
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