void loop() if (IrReceiver.decode()) IrReceiver.printIRResultShort(&Serial); IrReceiver.resume(); // ready for next code
| Pin | Name | |-----|------| | 1 | GND | | 2 | Vcc | | 3 | OUT | gm4e01
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). void loop() if (IrReceiver
void setup() Serial.begin(9600); IrReceiver.begin(IR_RX_PIN, ENABLE_LED_FEEDBACK); Overview The GM4E01 is a miniature, epoxy-molded IR
| 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: