I'm quite satisfied with my product , my only downside is that the big MOSFET and parts next it heat up under load ,but product quality is good
2A Dual L298N Motor Driver Module with PWM Control
Speech Recognition Module
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The Voice Recognition Module can recognize as many as 15 voice instructions and be suitable for most cases involving voice control. It receives configuration commands or responds through a serial port interface. The Speech Recognition Sensor Module can control cars or other electrical devices by voice. It can store 15 pieces of voice instruction. Those 15 pieces are divided into 3 groups, with 5 in one group.
First, we should record the voice instructions group by group. After that, we should import one group by serial command before it can recognize the 5 voice instructions within that group. If we need to implement instructions in other groups, we should import the group first. This module is speaker-independent. If your friend speaks the voice instruction instead of you, it may not identify the instruction.
| Voltage | 4.5-5.5V |
| Current | Less than 40mA |
| Digital Interface | 5V TTL level UART interface |
| Analog Interface | 3.5mm mono-channel microphone connector + microphone pin interface |
| Recognition accuracy | 99% (under ideal environment) |