AI Offline Speech Recognition Module (US516P6)
Hummingbird-M US516P6 offline voice recognition — 100 local commands, no cloud, no code, firmware over USB.
- Material
- PCB & electronic components
- Age range
- 8+
- Category
- STEM Robotics & Electronics
- Customisation
- OEM & ODM available
Specifications, component counts and packaging are configurable. Figures shown reflect our standard configuration.
Key features
- US516P6 pure-offline speech chip: 32-bit RISC core with DSP instruction set, FPU and FFT accelerator.
- Recognizes 100 local commands offline; runs a lightweight RTOS.
- On-board USB-to-serial: one-click download and upgrade of recognition content via the SmartPi no-code platform (module compatible with SU-03T).
- Default firmware replies to wake words and command words and outputs the command ID over UART (9600 8-N-1) — read data directly with no complex protocol.
Frequently asked about this product
Is the AI Offline Speech Recognition Module (US516P6) compatible with Arduino, ESP32 and micro:bit?
Yes. The AI Offline Speech Recognition Module (US516P6) talks over a standard I2C/SPI/UART bus at 3.3 V or 5 V logic, so it connects directly to Arduino (UNO/Nano/ Mega), ESP32, ESP8266 and micro:bit boards. Example sketches for Arduino IDE, Mixly and Mind+ are included, and the bus address can be reconfigured when several modules share one bus.
What voltage does the AI Offline Speech Recognition Module (US516P6) run on?
The AI Offline Speech Recognition Module (US516P6) runs from a standard 3.3-5 V DC supply (USB or the controller’s 5 V rail). It draws only a few milliamps in normal operation, so it is safe to power from the controller board itself for classroom builds.
What projects is the AI Offline Speech Recognition Module (US516P6) good for?
The AI Offline Speech Recognition Module (US516P6) is built for STEM and robotics education: classroom demonstrations, science-fair projects, robotics club builds and competition robots. It pairs with the rest of our module range — same connectors, same voltage, same toolchain — so students move from first circuit to competition robot without changing platforms.
What certification do the robotics and electronics products carry?
Controller boards, sensors and modules ship with CE marking and RoHS-compliant components, and the range is designed for classroom use under teacher supervision. Product-specific test reports and declarations of conformity are available for distributors on request.
What is the minimum order quantity, and can I get a sample first?
These are standard catalogue lines with stable production, so minimums are low and lead times are short. Samples ship within about a week and are normally credited against a first order. Mixed-SKU cartons are accepted for evaluation orders.
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Need pricing on this line?
Send your target quantity, destination market and any changes you need to artwork, colourway or packaging. We reply with a quotation and the applicable compliance route — usually within one working day.