
[2.0 Upgraded Version] ASRPRO Development Board (4M) Unassembled + Speaker + Download Cable
Heavy upgrade with ASRPRO 2.0 voice recognition module
One-key download for enhanced protection and stability
1.25 interface with power chip and TVS diode protection
Added 3.3V power supply chip to improve external device driving capability and reduce main control chip damage risk
Supports manual download (long press 2 seconds)
GPIO pins support high/low output, pulse, PWM, and serial input/output
Initial power-on state includes voice broadcast with customizable wake words and command words

TYPEC interface 168P chip soldered + cable
CN¥22.68
| Item | Detail |
|---|
| UART0 | 9600 baud rate (TX: PA2, RX: PA3) |
| UART1 | 115200 baud rate (TX: PA5, RX: PA6) |
| Size | Unfolded dimensions |
|---|---|
| Thickness | 1.19 mm (main chip 1.75 mm) |
| Pin pitch | 1.27 mm and 2.54 mm |
| Board size approx. 22.86mm x 17.6mm | — |
Development board includes multiple UART, PWM, I2C, and IIS interfaces
External microphone support requires resistor removal
Protection components include TVS diode and power chips for 3.3V and 5V lines
Product includes detailed pinout diagrams and real product photos for reference
Manual download requires pressing the download button for 2 seconds
Voice assistant supports customizable wake words and commands via typing
Supports hex code serial communication for voice responses and control signals
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