Table of Contents
HLK-V20 Christmas tree voice activated light PCB circuito utilizando módulo de reconhecimento de voz HLK-V20, USB or battery powered, battery charger circuit, White LED light, blink color LEDs . To be used in Christmas decoration.
There are only two standard passwords, “Turn on the switch” (turn on the light) and “Turn on the light” (turn on the flowing-colored light), you can see the PDF of HLK-V20.
Schematic HLK-V20 Christmas tree voice activated light

About Hi-Link HLK-V20 Voice Recognition module
The Hi-Link V20 is a powerful offline voice recognition module. Offline means that it does not need to connect to the internet to process the data. It can recognize any spoken words in both English and Chinese and will respond with an audio message and optionally output a signal or send a code via the serial port. Both the words to be recognized and the respond message can be customized to anything you want.
HLK-V20 is a high-performance pure offline voice recognition module newly launched by Hi-link Electronics according to a large number of pure offline control scenarios and products. It can be widely and quickly applied to smart homes, various smart small appliances, 86 boxes, toys, lamps, industrial, medical, Internet of Things, automotive, security and lighting products that require voice control.
The module uses a 32bit RSIC architecture core and adds a DSP instruction set specifically for signal processing and speech recognition, an FPU operation unit that supports floating point operations, and an FFT accelerator. The audio signal is trained and learned through the neural network to improve the voice signal Recognition ability.
The solution supports offline recognition of 150 local commands, free configuration of wake-up words, command words, and broadcast reply to words through the background, supports lightweight RTOS systems, rich peripheral interfaces, and simple and friendly customized tools.

BOM HLK-V20 Christmas tree voice activated light
Parts | Value | Description | Quantity |
---|---|---|---|
Resistors | |||
R1,R2 | 5.1kΩ (512) | R0603 – SMD resistor | 2 |
R3 | 240mΩ (R240) | R0805 – SMD resistor | 1 |
R4,R5,R9 | 1kΩ (102) | R0603 – SMD resistor | 3 |
R6 | 1.2kΩ (122) | R0603 – SMD resistor | 1 |
R7,R8 | 10kΩ (103) | R0603 – SMD resistor | 2 |
R10 | 15Ω (150) | R0805 – SMD resistor | 1 |
R11,R12,R13 | 4.7kΩ (472) | R0603 – SMD resistor | 3 |
R14 | 120Ω (121) | R0603 – SMD resistor | 1 |
R15 | 47Ω (470) | R0603 – SMD resistor | 1 |
R16 | 100Ω (101) | R0603 – SMD resistor | 1 |
Capacitors | |||
C1 | 100nF | C0603 – SMD capacitor | 1 |
C2,C3 | 10uF | C0603 – SMD capacitor | 2 |
C4,C5,C6 | 100uF | C1206 – SMD capacitor | 3 |
Semiconductors | |||
D1,D2 | B5819W | 40V 1A SOD-123 Schottky Diode | 2 |
LED1 | KT-0603R | LED0603 – Red LED | 1 |
LED2 | KT-0603G | LED0603 – Green LED | 1 |
LED3,LED4,LED5,LED6,LED7 | XL-3014UWC-02 | SMD3014 LED White | 4 |
LED8,LED9,LED11,LED12,LED13 | MHS171CRCT | 0805 Side view LED red | 5 |
LED19,LED20,LED21,LED22,LED23, | MHS171UGCT | 0805 Side view LED green | 5 |
LED24,LED25,LED26,LED27,LED28 | MHS171UBCT | 0805 Side view LED blue | 5 |
Q1 | AO3401A | 30V 4A 44mΩ 1.4W P-Channel SOT-23 MOSFET | 1 |
Q2,Q3,Q4 | S8050 (J3Y) | 25V 300mW 500mA NPN SOT-23 Bipolar transistor | 3 |
U1 | HLK-V20 | HLK-V20 Voice Recognition module | 1 |
U5 | TP4056-MS | Lithium-ion/Polymer 1A SOP-8-EP battery charger | 1 |
Miscellaneous | |||
F1 | BSMD0805-100-6V | F0805 – 6V 1A 0805 Resettable Fuse | 1 |
P1,P2,P3,P4,P5,P6,P7,P8,P9,P10,P11, P12,P13,P14,P15,P16,P17 |
Pad | PAD in PCB | 17 |
U2 | TYPE-C | 6P Type-C SMD USB Connector Standing paste | 1 |
Download files, links, and notes
- Download PCB colorful in Gerber + BOM + Centroid file + Panel file
- Mirror
- BUY HLK-V20 module
- Download PDF datasheet Hi-Link HLK-V20
- Download Hi-Link HLK-V20 Voice Recognition User Manual
- HLK-V20 demo firmware command word and broadcast reply introduction.xls
- Other downloads
Source: https://oshwhub.com/23studio/christmas-tree-lights