@blevoice

Junluan Tsui

@blevoiceJoined July 2025

Embedded electronics engineer, devoting to developing products and projects related to Bluetooth chips/modules, voice chips/modules.

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Junluan Tsui's blogs

Bluetooth and Voice chip - Dev. and App.ble-voice.hashnode.dev68 posts

Troubleshooting Record: AC6966B Main Controller Debug Issue on Vibration Fat-Burning Machine – No Speaker Sound Under Type-C Full Machine Power Supply

Market Prospect of Home Fat-Burning Equipment The home passive fitness market is continuously expanding. Vibration fat-burning machines feature a low barrier to fat loss, targeting office workers an

Jul 21 · 3 min readble-voice.hashnode.dev

JL Engineer's Work Log 2: Adding Custom Prompt Tones on Jieli Bluetooth Audio SoC (AC696N Series/AC6966B)

Introduction The JL AC696N development board comes with predefined prompt tones. Since developers often need to add their own tones, this guide uses the AC6966B chip as an example to explain how to a

Jun 1 · 2 min readble-voice.hashnode.dev

JL JieLi AC696N Series Development GPIO Control Encyclopedia: Modes, APIs, and Special Pins

Introduction GPIO configuration seems simple, but there are plenty of cases where things go wrong. If the drive strength isn't set correctly, an LED might be too dim or not light at all. Without prope

May 12 · 3 min readble-voice.hashnode.dev

JieLi AC6966B Development Board Peripheral Expansion: JL AC696N SPI Drives Flash, LCD, and RGB LEDs

Introduction For products like Bluetooth speakers and headphones, the chip's built-in resources are rarely enough—you need external Flash to store prompt tones, an LCD to display status, and a few RGB

Apr 5 · 3 min readble-voice.hashnode.dev

JL Jieli AC696N Series Chip Debugging Tool: UART Serial Print Configuration and Online Tuning

Introduction The serial port is truly the "eyes" of a developer – that statement is no exaggeration. In embedded debugging, if you can't get logs out, it's like working blindfolded. The UART configura

Apr 3 · 3 min readble-voice.hashnode.dev

Junluan Tsui

About

Available for

Junluan Tsui's blogs

Troubleshooting Record: AC6966B Main Controller Debug Issue on Vibration Fat-Burning Machine – No Speaker Sound Under Type-C Full Machine Power Supply

JL Engineer's Work Log 2: Adding Custom Prompt Tones on Jieli Bluetooth Audio SoC (AC696N Series/AC6966B)

JL JieLi AC696N Series Development GPIO Control Encyclopedia: Modes, APIs, and Special Pins

JieLi AC6966B Development Board Peripheral Expansion: JL AC696N SPI Drives Flash, LCD, and RGB LEDs

JL Jieli AC696N Series Chip Debugging Tool: UART Serial Print Configuration and Online Tuning

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Junluan Tsui

About

Available for

Junluan Tsui's blogs

Troubleshooting Record: AC6966B Main Controller Debug Issue on Vibration Fat-Burning Machine – No Speaker Sound Under Type-C Full Machine Power Supply

JL Engineer's Work Log 2: Adding Custom Prompt Tones on Jieli Bluetooth Audio SoC (AC696N Series/AC6966B)

JL JieLi AC696N Series Development GPIO Control Encyclopedia: Modes, APIs, and Special Pins

JieLi AC6966B Development Board Peripheral Expansion: JL AC696N SPI Drives Flash, LCD, and RGB LEDs

JL Jieli AC696N Series Chip Debugging Tool: UART Serial Print Configuration and Online Tuning