What is it?

This is a simple LED board equipped with 10 green LEDs. It’s a handy tool for electronics beginners to test GPIO output signals. It’s especially useful for projects involving FPGAs, MCUs, or other processors that require LEDs to indicate software running status or general output signals.

Why did you make it?

When debugging system software, I often used a breadboard with resistors and LEDs to test GPIO outputs from development boards. While this worked fine for one or two outputs, testing more than five quickly became messy and time-consuming to set up. Mistakes like reversed polarity or incorrect wiring were common. To solve this, I designed a compact PCB with 10 independent LED channels, making testing neater, faster, and more reliable.

What makes it special?

1- Standard 2.54mm pitch connector 2- 10 independent LED channels 3- Compact, low-cost design