The is a versatile, low-cost solution for adding stereo audio playback to battery-powered projects. While no centralized, manufacturer-issued HW-104 datasheet exists, the technical details presented here – derived from the PAM8403 IC datasheet and practical testing – provide all the necessary information for safe and effective use.
If you have ever wanted to build your own portable speaker or add sound to a custom arcade cabinet, you have likely come across a tiny green board labeled hw-104 amplifier datasheet
Although the HW-104 has no built-in volume control, you can add a potentiometer on the input lines (10kΩ log taper) or control it via an Arduino and a digital pot like the MCP41010. The is a versatile, low-cost solution for adding
The HW-104 amplifier datasheet also provides detailed technical specifications, including: The is a versatile
The HW-104 requires very few external components, as most are integrated onto the PCB. Below is a typical connection diagram for a portable stereo speaker.
