U183 · M5Stack
Unit DMX is a communication unit specifically designed for DMX-512 data transmission scenarios. It integrates the CA-IS3092W isolated half-duplex RS-485 transceiver, providing up to 5kVrms electrical isolation protection. The onboard 120Ω terminal resistor switch can be connected according to the usage scenario to match the characteristic impedance of the signal transmission line, preventing signal reflection and distortion. Through the Grove interface, this unit can communicate with the M5… (M5Stack U183)
| Part number | U183 |
|---|---|
| Manufacturer | M5Stack |
| Category | Communication & Wireless › CAN, RS-485 & RS-232 |
| Pins | 4 |
DMX Unit with Isolated RS-485 Transceiver (CA-IS3092W) 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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