SU-03T/03T1 AI Intelligent Offline Speech Recognition Module Voice Control Chip – KSH 700 at HIMA TRONICS Mombasa – Top quality HIMA electronics. Best electronics in Kenya. Shop now for Arduino, ESP32, sensors and IoT devices.
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SU-03T/03T1 AI Intelligent Offline Speech Recognition Module Voice Control Chip

SKU: HMJ534 Category: HIMA electronics
KSH 700.00
In Stock
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Product Description

SU03T / SU03T1 AI Offline Voice Recognition Module

= High-Performance Offline Voice Control Chip for Embedded Systems =

The SU03T and SU03T1 are lowcost, lowpower offline speech recognition modules designed for voice-controlled smart home devices, appliances, toys, and industrial automation. Operating completely without internet, they protect user privacy and provide fast, reliable voice interaction.

Pure Offline Operation - No internet required, protects user privacy with <200ms response time
Customizable Voice Commands - Define commands via Smart Era platform in approximately 3 minutes
Operating Voltage: 3.3V to 5V
Default UART Baud Rate: 115200
Microphone Sensitivity: -26 dB ± 3 dB
Use B6/B7 pins for serial communication and B2/B3 for firmware upgrades

= Technical Specifications =

ParameterValue
Core32-bit RISC at 240MHz, DSP + FPU
Memory242KB SRAM + 2MB Flash
Audio1x analog mic input, mono audio output
InterfacesUART, I2C, SPI, PWM, GPIO, 12-bit ADC
Power5V input, builtin 5Vto-3.3V LDO
Speaker OutputUp to 1.6W (8Ω) / 2.4W (4Ω)
Standby CurrentApproximately 60mA

= Key Features =

+High Performance Processing - 240MHz RISC core with DSP and FPU

+FFT Accelerator Supports 1024point complex FFT for audio processing

+Rich Peripherals - 10 GPIOs, SPI Master/Slave, I2C, 2 PWM outputs

+Complete SDK RTOSbased SDK with UART and I2C control protocol support

== Applications ==

  1. Smart home lighting and appliance control
  2. Voice-activated toys and educational products
  3. Industrial automation and equipment control
  4. 86-box wall switch integration
CostEffective Voice Solution Low-cost offline module for mass production
Easy Integration - SMD18 package with complete development SDK

√ Compatible with Arduino, ESP32, STM32 via UART

√ Custom voice command support via Smart Era platform

√ SMD package for automated assembly

= Pin Configuration (18-Pin Top View) =

PinNameFunction
1VCC5V Power Input
2DGNDGround
33V33.3V Output
8MIC-ECM Microphone Negative
9MIC+ECM Microphone Positive
14B0UARTTXD / I2CSCL
15B1UARTRXD / I2CSDA
17SPK-Speaker Negative
18SPK+Speaker Positive
Connect B6/B7 for serial communication and B2/B3 for firmware upgrades

= Troubleshooting =

Module not responding:

  • Verify power supply (3.3V to 5V)
  • Use B6/B7 pins for UART communication
  • Check 115200 baud rate

Poor voice recognition:

  • Use recommended ECM microphone (SNR ≥68dB)
  • Ensure speaker is minimum 1.6W at 4Ω or 1.1W at 8Ω
  • Adjust microphone gain via AT commands if supported