
U098-B2 · M5Stack

Unit Ultrasonic-IO is a GPIO interface ultrasonic distance measurement sensor. The hardware uses the RCWL-9620 ultrasonic distance measurement single-chip combined with a 16 mm probe, capable of achieving precise distance measurement within the range of 2 cm-450 cm (accuracy up to ±2%). After the controller sends a trigger signal, the sensor outputs a pulse duration corresponding to the sound wave reflection time, and the distance can be calculated from this data. The IO control method gives… (M5Stack U098-B2)
| Part number | U098-B2 |
|---|---|
| Manufacturer | M5Stack |
| Category | Interface & Expansion › I/O Expanders & Multiplexers |
| Pins | 4 |
| Tolerance | 2 % |
Ultrasonic Distance Unit I/O (RCWL-9620) pinout
| Pin | Name | Type | Description |
|---|---|---|---|
| 1 | SIG1 | bidirectional | PORT.B: GPIO/analog; PORT.C: UART - see the unit's pin map |
| 2 | SIG2 | bidirectional | PORT.B: GPIO/analog; PORT.C: UART - see the unit's pin map |
| 3 | 5V | power | |
| 4 | GND | ground |
Schematic symbol and footprint
Schematic symbol
Footprint: Grove HY2.0 4-pin through-hole, 2.0 mm pitch — to scale, pad 1 in yellow (mm). Check against the datasheet before ordering PCBs.
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