
U194 · M5Stack

Unit ASR is an AI offline speech recognition unit, built with the CI-03T AI intelligent offline speech module. This unit features powerful speech recognition, voiceprint recognition, speech enhancement, and voice detection capabilities. It supports AEC (echo cancellation) to effectively eliminate echo and noise interference, improving speech recognition accuracy. It also supports mid-session speech interruption, allowing it to flexibly interrupt and quickly respond to new commands during… (M5Stack U194)
| Part number | U194 |
|---|---|
| Manufacturer | M5Stack |
| Category | Audio › MP3, Voice & Sound Boards |
| Pins | 4 |
ASR Unit with Offline Voice Module (CI-03T) 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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