SU-03T/03T1 AI Intelligent Offline Speech Recognition Module Voice Control Chip – KSH 700 at HIMASTORES Mombasa – best electronics in Kenya
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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

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[citation:1][citation:2]. Operating completely without internet, they protect user privacy and provide fast, reliable voice interaction[citation:1][citation:2].

Pure Offline Operation - No internet required, protects user privacy with <200ms response time[citation:1][citation:4]
Customizable Voice Commands - Define commands via Smart Era platform in approximately 3 minutes[citation:1]
Operating Voltage: 3.3V to 5V[citation:1]
Default UART Baud Rate: 115200[citation:1]
Microphone Sensitivity: -26 dB ± 3 dB[citation:1]
Use B6/B7 pins for serial communication and B2/B3 for firmware upgrades[citation:8][citation:10]

Technical Specifications

ParameterValue
Core32-bit RISC at 240MHz, DSP + FPU[citation:8][citation:10]
Memory242KB SRAM + 2MB Flash[citation:8][citation:10]
Audio1x analog mic input, mono audio output[citation:8][citation:10]
InterfacesUART, I2C, SPI, PWM, GPIO, 12-bit ADC[citation:8][citation:10]
Power5V input, builtin 5Vto-3.3V LDO[citation:8][citation:10]
Speaker OutputUp to 1.6W (8Ω) / 2.4W (4Ω)[citation:8]
Standby CurrentApproximately 60mA[citation:8]

= Key Features =

+High Performance Processing - 240MHz RISC core with DSP and FPU[citation:8][citation:10]

+FFT Accelerator Supports 1024point complex FFT for audio processing[citation:8][citation:10]

+Rich Peripherals - 10 GPIOs, SPI Master/Slave, I2C, 2 PWM outputs[citation:8][citation:10]

+Complete SDK RTOSbased SDK with UART and I2C control protocol support[citation:8][citation:10]

= Applications =

  1. Smart home lighting and appliance control[citation:1][citation:2]
  2. Voice-activated toys and educational products[citation:1][citation:2]
  3. Industrial automation and equipment control[citation:1]
  4. 86-box wall switch integration[citation:2][citation:10]
CostEffective Voice Solution Low-cost offline module for mass production[citation:2][citation:10]
Easy Integration - SMD18 package with complete development SDK[citation:8][citation:10]

√ Compatible with Arduino, ESP32, STM32 via UART

√ Custom voice command support via Smart Era platform

√ SMD package for automated assembly[citation:8]

Pin Configuration (18-Pin Top View)

PinNameFunction
1VCC5V Power Input
2DGNDGround
33V33.3V Output
8MIC-ECM Microphone Negative[citation:8]
9MIC+ECM Microphone Positive[citation:8]
14B0UARTTXD / I2CSCL[citation:8]
15B1UARTRXD / I2CSDA[citation:8]
17SPK-Speaker Negative[citation:8]
18SPK+Speaker Positive[citation:8]

> Connect B6/B7 for serial communication and B2/B3 for firmware upgrades[citation:8][citation:10]

Troubleshooting

Module not responding:

  • Verify power supply (3.3V to 5V)[citation:1][citation:8]
  • Use B6/B7 pins for UART communication[citation:8][citation:10]
  • Check 115200 baud rate[citation:1]

Poor voice recognition:

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