Hw 131 Power Supply Datasheet -

Connect a 9V wall adapter to barrel jack. Place module on breadboard. Use jumper to set “EXT”. The breadboard’s red line = 5V, blue line = 3.3V.

Dual selectable rails for 3.3V or 5V; each rail can be independently set using jumpers. Max Output Current: Generally rated for . Hw 131 Power Supply Datasheet

Using jumpers, each rail of the breadboard can be set independently to 5V , 3.3V , or OFF (0V) . Connect a 9V wall adapter to barrel jack

Because many generic manufacturers produce this specific model, a single, official document can be hard to find. This article serves as a comprehensive breakdown of the HW-131, decoding its specifications, analyzing its circuit design, and providing the critical technical details usually found in a manufacturer’s datasheet. The breadboard’s red line = 5V, blue line = 3

The HW-131 is highly configurable through its onboard jumpers and pins:

Based on standard HW-131 specifications, here is the you would highlight: