- 2019/09/19•The working principle of the vibrating module
- 2019/09/12•About the vibration switch of the voice chip
- 2019/09/04•Principle of optical control music module
- 2019/08/28•USB download music module that you could download audio through USB cable from PC
- 2019/08/21•Easy sticker sound module with a light sensor
- 2019/08/14•Touch switch for voice chip
- 2019/08/09•Working principle of motion sensor
- 2019/07/31•About the sound of the speaker
- 2019/07/16•Greeting card Expression of love
- 2019/07/09•We have a funny product to share with you