U145 · M5Stack
Unit Limit is a travel switch unit. When the switch lever is pressed and closed by external force, the digital signal interface of the switch unit will be pulled down from a 3.3V high level to a 0V low level, providing a limit trigger signal to the MCU or other main control peripherals. It is suitable for various moving mechanical equipment to control travel and provide terminal limit protection. Features Contact-type travel switch Stable performance, reliable and durable, with a mechanical… (M5Stack U145)
| Part number | U145 |
|---|---|
| Manufacturer | M5Stack |
| Category | User Input & Controls › Switches |
| Pins | 4 |
| Voltage (max) | 3.3 V |
Limit Switch Unit 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.
