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537 Voice Controller

Overview

The first-generation version is essentially an expansion board for the HLK_V20. The finished product size can be directly fitted into the same Usachi model, and it includes lights, a vibration motor, and lithium battery charging/discharging circuitry. Important reminder: When making this, if you only have a GD3800 chip on hand and are in a rush, make sure you can purchase this chip before replicating it.
The board has a reserved slot for an STC8/15 microcontroller, allowing for further functionalities by configuring the HLK_V20 and STC microcontroller.
Connect jumpers as needed, or use 0-ohm resistors for connection.

Design Files

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It is your responsibility to test the circuit yourself and determine its suitability for you. EEWorld will not be liable for direct, indirect, special, incidental, consequential or punitive damages arising from any cause or anything connected to any reference design used.

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Update:2026-03-28 16:53:39

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