Gm4e01 [2021] | 95% SECURE |

| Part Number | Carrier | Notes | |-------------|---------|-------| | TSOP38238 | 38 kHz | Standard Vishay replacement | | VS1838B | 38 kHz | Cheap, widely available | | TSOP31238 | 38 kHz | Similar pinout, good immunity | | TL1838 | 38 kHz | Common clone |

Would you like help identifying the exact pinout for your specific GM4E01, or adapting it to a particular microcontroller?

Note: If this is not an IR receiver (e.g., if it’s on a power supply board), please check the marking context below. However, 99% of inquiries for GM4E01 point to the Sharp IR module. 1. Overview The GM4E01 is a miniature, epoxy-molded IR receiver module designed for infrared remote control systems. It receives modulated IR signals (typically 38 kHz or 40 kHz) from a remote control, amplifies them, demodulates them, and outputs the digital data signal for a microcontroller (e.g., Arduino, ESP32, PIC).

| Pin | Name | Description | |-----|------|-------------| | 1 | OUT | Data output (to MCU) | | 2 | GND | Ground (0V) | | 3 | Vcc | +5V power supply |

Given the part number format, is most likely a Sharp IR (Infrared) Communication Module , specifically part of the GP2 series (sometimes labeled under "GM" for custom or older batches). It is commonly used for remote control reception (IR receiver) .

| Pin | Name | |-----|------| | 1 | GND | | 2 | Vcc | | 3 | OUT |

| Problem | Likely Cause | Fix | |---------|--------------|-----| | No output toggling | Wrong pinout | Double-check pins; test with known working remote. | | Weak reception | Low Vcc, external light noise | Add shielding, black epoxy case, reduce ambient IR. | | Spurious triggers | Fluorescent/LED light interference | Add 100nF capacitor between Vcc & GND near module. | | No response to remote | Wrong carrier frequency (e.g., 36 kHz vs 38 kHz) | Check remote spec; try a different IR receiver. | 9. Equivalent / Replacement Parts If GM4E01 is unavailable, replace with: