Ultrasonic Distance Sensor - 3V or 5V - HC-SR04 compatible
HC-SR04-compatible ultrasonic distance sensor with trigger/echo interface, operating at 3 V or 5 V for 2–450 cm range. Drop-in replacement for standard HC-SR04 in 3.3 V microcontroller systems without level shifting.
Pinout
- Vcc
Power pin for the HC-SR04-compatible ultrasonic sensor; Adafruit Learn says this sensor requires 5V power for best results.
Type · PowerVoltage · 5V power for best results - Trig
Trigger input; Adafruit Learn says setting Trig high for 10µs initiates an ultrasonic burst.
Type · SignalVoltage · 3V or 5V signal - Echo
Return signal; Adafruit Learn says Echo goes high after the burst and stays high until the echo is received, so pulse width is used to compute distance.
Type · SignalVoltage · 5V logic return signal; Adafruit notes using the included resistor divider for safe 3V-device reading - Gnd
Ground pin.
Type · GroundVoltage · 0V ground
| Pin | Type | Function | Voltage |
|---|---|---|---|
| Vcc | Power | Power pin for the HC-SR04-compatible ultrasonic sensor; Adafruit Learn says this sensor requires 5V power for best results. | 5V power for best results |
| Trig | Signal | Trigger input; Adafruit Learn says setting Trig high for 10µs initiates an ultrasonic burst. | 3V or 5V signal |
| Echo | Signal | Return signal; Adafruit Learn says Echo goes high after the burst and stays high until the echo is received, so pulse width is used to compute distance. | 5V logic return signal; Adafruit notes using the included resistor divider for safe 3V-device reading |
| Gnd | Ground | Ground pin. | 0V ground |
Pin details
4 connections- Vcc
Power pin for the HC-SR04-compatible ultrasonic sensor; Adafruit Learn says this sensor requires 5V power for best results.
PowerVoltage · 5V power for best results - Trig
Trigger input; Adafruit Learn says setting Trig high for 10µs initiates an ultrasonic burst.
SignalVoltage · 3V or 5V signal - Echo
Return signal; Adafruit Learn says Echo goes high after the burst and stays high until the echo is received, so pulse width is used to compute distance.
SignalVoltage · 5V logic return signal; Adafruit notes using the included resistor divider for safe 3V-device reading - Gnd
Ground pin.
GroundVoltage · 0V ground
Start wiring
I2C · SPI · Single data line · 3.3 – 5 V · Breakout
Pimoroni describes its VL53L1X breakout as a compact time-of-flight distance sensor with I²C address 0x29, 4–400 cm range, 27° field of v…
Module pins: Vcc, Gnd, Trig, Echo. Schematik maps them to your board in the app.
Distance sensors
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